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Celestion CF18VJD vs PD1850

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Category: Plans
Forum Name: Scoops
Forum Description: One scoop or two ;-)
URL: https://forum.speakerplans.com/forum_posts.asp?TID=74029
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Topic: Celestion CF18VJD vs PD1850
Posted By: levyte357-
Subject: Celestion CF18VJD vs PD1850
Date Posted: 28 November 2012 at 4:55pm
Seems the Celestion is battling it out with PD1850 right now.

Many of us have heard Touch Above using them. Some think Celestions can be powered to play louder than 1850, others argue PD1850 plays lower notes better.

Comments, opinions?



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Global Depopulation - Alive and Killing.



Replies:
Posted By: Tweeter_Box
Date Posted: 28 November 2012 at 5:06pm
I prefer the 1850, everytime ive heard the Celestion i thought it was crap!


Posted By: levyte357-
Date Posted: 28 November 2012 at 5:09pm
Originally posted by Tweeter_Box Tweeter_Box wrote:

I prefer the 1850, everytime ive heard the Celestion i thought it was crap!


But Celestion plays fairly deep & can take "licks" in right box.

1850 can shift more air though, with much less power.


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Global Depopulation - Alive and Killing.


Posted By: mooreb
Date Posted: 28 November 2012 at 5:12pm
PD1850s all day long! Smile

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FB LS AUDIO SYSTEMS


Posted By: Tweeter_Box
Date Posted: 28 November 2012 at 6:17pm
Originally posted by levyte357- levyte357- wrote:



Originally posted by Tweeter_Box Tweeter_Box wrote:

I prefer the 1850, everytime ive heard the Celestion i thought it was crap!


But Celestion plays fairly deep & can take "licks" in right box.

1850 can shift more air though, with much less power.



I was put of by the fact you need a nuclear power station for each driver


Posted By: levyte357-
Date Posted: 28 November 2012 at 7:27pm
Originally posted by Tweeter_Box Tweeter_Box wrote:

Originally posted by levyte357- levyte357- wrote:



Originally posted by Tweeter_Box Tweeter_Box wrote:

I prefer the 1850, everytime ive heard the Celestion i thought it was crap!


But Celestion plays fairly deep & can take "licks" in right box.

1850 can shift more air though, with much less power.



I was put of by the fact you need a nuclear power station for each driver


Come now, only needs a small power station for each one. LOL


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Global Depopulation - Alive and Killing.


Posted By: UpComingSound
Date Posted: 29 November 2012 at 3:05pm
can the Celestion CF18VJD fit and work good in a superscoop cabinet?


Posted By: bee
Date Posted: 29 November 2012 at 9:58pm

ive destroyed a few venues and a field with the cf18......



Posted By: luton_soundman
Date Posted: 29 November 2012 at 11:52pm
Did it 'shake the earth' ? :-D 


Posted By: levyte357-
Date Posted: 30 November 2012 at 1:07am
Originally posted by luton_soundman luton_soundman wrote:

Did it 'shake the earth' ? :-D 


http://crackingheaven.com/images/smilies/rofl-smiley-gif-800.gif



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Global Depopulation - Alive and Killing.


Posted By: bee
Date Posted: 30 November 2012 at 9:15am
Rattled a few eye balls.....



Posted By: Tweeter_Box
Date Posted: 30 November 2012 at 12:39pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by luton_soundman luton_soundman wrote:

Did it 'shake the earth' ? :-D 


http://crackingheaven.com/images/smilies/rofl-smiley-gif-800.gif




http://crackingheaven.com/images/smilies/rofl-smiley-gif-800.gif


Posted By: UpComingSound
Date Posted: 30 November 2012 at 6:07pm
Bee so the  CF18VJD will fit in the superscoop cabinets?


Posted By: bee
Date Posted: 30 November 2012 at 6:39pm
Never tried them in a super.... will check measurments for you...



Posted By: UpComingSound
Date Posted: 30 November 2012 at 7:19pm
ok give thanks


Posted By: bee
Date Posted: 01 December 2012 at 2:17pm
ok from front of baffle to rear panel on a super is 256mm the cf18 is 233mm so it should fit fine.....
 
http://celestion.com/product/5/cf18vjd/" rel="nofollow - http://celestion.com/product/5/cf18vjd/
 
 


Posted By: UpComingSound
Date Posted: 01 December 2012 at 2:45pm
ok give thanks maybe ill try a couple of them see how they beat


Posted By: levyte357-
Date Posted: 01 December 2012 at 5:47pm
Originally posted by bee bee wrote:

ok from front of baffle to rear panel on a super is 256mm the cf18 is 233mm so it should fit fine.....
 
http://celestion.com/product/5/cf18vjd/" rel="nofollow - http://celestion.com/product/5/cf18vjd/
 
 


No.

From Front of cabinet to rear baffle is 256.
From Front of front baffle to rear baffle is 220

Inside depth of chamber is 202mm (256 - 54)

Celestion is 233 overall depth.

Assuming Depth behind front edge of driver is 223mm,

Then it seems driver is 21mm too deep.





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Global Depopulation - Alive and Killing.


Posted By: bee
Date Posted: 01 December 2012 at 5:59pm
you are correct lev.... sorry up and coming, i looked at the orig plans in a rush..... ive had a bad dose of man flu for the last 2 days so me head is a bit fuzzy.... sorry....


Posted By: SBC
Date Posted: 01 December 2012 at 6:06pm
No

Driver capacity is 220 in the super because it sits on the outside of the front baffle

So the celestion is 3 mm too deep. Add the 5mm you need for clearance, the driver is 8mm too deep. But you could rout this out of the rear baffle.

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F.T.S.S.


Posted By: JR.junior
Date Posted: 01 December 2012 at 6:10pm
..or buy a PD186.

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Support the scoop technology, larger mouth plays louder!


Posted By: bee
Date Posted: 01 December 2012 at 6:15pm
the other option is to but on a double front baffle..... or build new ones with bigger chamber....


Posted By: UpComingSound
Date Posted: 01 December 2012 at 8:41pm
ok give thanks ill keep using my celestin bx 18 in them


Posted By: levyte357-
Date Posted: 01 December 2012 at 10:49pm
Originally posted by SBC SBC wrote:

No

Driver capacity is 220 in the super because it sits on the outside of the front baffle

So the celestion is 3 mm too deep. Add the 5mm you need for clearance, the driver is 8mm too deep. But you could rout this out of the rear baffle.


Yes, Saul, dat is it.




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Global Depopulation - Alive and Killing.


Posted By: stitchy
Date Posted: 02 December 2012 at 6:00am
slightly off topic. Would the PD1851 work in superscooper? anyone tried this combination yet?


Posted By: SBC
Date Posted: 02 December 2012 at 10:12am
go listen to dub conductor sound system. 


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F.T.S.S.


Posted By: balistic_sounds
Date Posted: 02 December 2012 at 10:16am
Do dub conducter have 51 now then?

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Don't underestimate no sound!


Posted By: SBC
Date Posted: 02 December 2012 at 10:18am
had them for 18+ months 

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F.T.S.S.


Posted By: toastyghost
Date Posted: 02 December 2012 at 11:51pm
Originally posted by SBC SBC wrote:

had them for 18+ months 


And very nice they sound too, totally transformed the Super in my opinion!


Posted By: JahMic
Date Posted: 24 December 2012 at 5:24pm
any new thoughts on the CF18VJD


Posted By: levyte357-
Date Posted: 24 December 2012 at 6:04pm
Originally posted by JahMic JahMic wrote:

any new thoughts on the CF18VJD


Needs the right box, and tufty amp to shine.


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Global Depopulation - Alive and Killing.


Posted By: studio45
Date Posted: 24 December 2012 at 6:08pm
So it's a bit like a Turbomax, then?

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Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA


Posted By: levyte357-
Date Posted: 24 December 2012 at 6:25pm
Originally posted by studio45 studio45 wrote:

So it's a bit like a Turbomax, then?


Oh yeah...

But, not quite as box sensitive.


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Global Depopulation - Alive and Killing.


Posted By: JahMic
Date Posted: 24 December 2012 at 9:54pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

any new thoughts on the CF18VJD


Needs the right box, and tufty amp to shine.

Give thanks Lev
I have modded eminence scoops. And i got a crown itect 8000 . Would this combo work well. 


Posted By: levyte357-
Date Posted: 25 December 2012 at 9:36am
Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

any new thoughts on the CF18VJD


Needs the right box, and tufty amp to shine.

Give thanks Lev
I have modded eminence scoops. And i got a crown itect 8000 . Would this combo work well. 


Unfortunately, ITECH 8K will run out of steam way before properly driving the Celestion.

I know, because I have one of the Celestions, and have also seen the ITECH driving '50s.




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Global Depopulation - Alive and Killing.


Posted By: bee
Date Posted: 25 December 2012 at 9:42am
2 cf18's off a 10k and you got mental sub pressure....  


Posted By: toastyghost
Date Posted: 25 December 2012 at 10:09am
Lev, I know in reality you'd never stump up the cash for one of your own, but have you given the CF18 a punt on a K20?


Posted By: levyte357-
Date Posted: 25 December 2012 at 10:28am
Originally posted by toastyghost toastyghost wrote:

Lev, I know in reality you'd never stump up the cash for one of your own, but have you given the CF18 a punt on a K20?


Don't see the point really.

Decent, bridged 4K transformer amp is much cheaper, and man enough to spank 2x of them into oblivion, no problem. With a "pre-amp" in the chain, that is. LOL

EDIT:So as you can see, CF18VJD is not for normal people.Embarrassed











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Global Depopulation - Alive and Killing.


Posted By: bee
Date Posted: 25 December 2012 at 12:02pm
k20 on four I would like to hear.... 


Posted By: bee
Date Posted: 25 December 2012 at 12:04pm
pluss 1 lev.... but you do get something special if u can afford the amps to power them. just look at what touch above gets out of em.....


Posted By: levyte357-
Date Posted: 25 December 2012 at 12:30pm
Originally posted by bee bee wrote:

k20 on four I would like to hear.... 


My question is, what's point of buying 20K amp, if you're never gonna have 20K power supply available?



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Global Depopulation - Alive and Killing.


Posted By: Tweeter_Box
Date Posted: 25 December 2012 at 12:37pm
Originally posted by bee bee wrote:

2 cf18's off a 10k and you got mental sub pressure....  


A 10k amp for 2 drivers !!



Merry xmas to all you scoop fanatics


Posted By: luton_soundman
Date Posted: 25 December 2012 at 1:32pm
if a 10k amp rated at 4k per channel at 4r can't power 2 drivers a channel its an embarressment. k10, inf8 can spank 4 drivers no problem. if budget doesn't allow then 2 bridged amps such as mpx1200, 4050hd, proline3000, str3000


Posted By: bee
Date Posted: 25 December 2012 at 3:09pm
this is true lev, but if you spec your gear for the venue before u go then power should never be an issue.... if venue has 32 you take the 32 leads or 16 leads etc, if you only have 13amp plugs then u would not take gear needing a 32 supplie....


Posted By: bee
Date Posted: 25 December 2012 at 3:16pm
true luton, meant a 20k to spank 4 drivers not 2, with a good amount of head room..... the cf18 won't handle 5k cont... but having good head room is how i  like to run...  the is no questioning the cf18 likes to be fed power... but for me is worth it less boxes, less crew more profit margin from events...


Posted By: levyte357-
Date Posted: 25 December 2012 at 3:28pm
Originally posted by bee bee wrote:

this is true lev, but if you spec your gear for the venue before u go then power should never be an issue.... if venue has 32 you take the 32 leads or 16 leads etc, if you only have 13amp plugs then u would not take gear needing a 32 supplie....


Unfortunately many halls out there, that hold 2K+ people, with only 13A plugs available.

Sounds with efficient drivers and cabs, can escape with 8x subs, if they have right amps and engineer knows what he's doing.

Go in these places with 1600W drivers, and 20K amps, and it might not turn out well.




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Global Depopulation - Alive and Killing.


Posted By: Tweeter_Box
Date Posted: 25 December 2012 at 4:22pm
Originally posted by toastyghost toastyghost wrote:

Lev, I know in reality you'd never stump up the cash for one of your own, but have you given the CF18 a punt on a K20?


U gonna go into GP with 4 bass boxes n show people who it should be done?


Posted By: toastyghost
Date Posted: 25 December 2012 at 4:42pm
Originally posted by Tweeter_Box Tweeter_Box wrote:

Originally posted by toastyghost toastyghost wrote:

Lev, I know in reality you'd never stump up the cash for one of your own, but have you given the CF18 a punt on a K20?


U gonna go into GP with 4 bass boxes n show people who it should be done?


I'm not really sure how that's remotely relevant? I was only asking if Lev had access to a K20 and if he had tried it, as he seems to respect the K10 but states these drivers are power hungry. If anything can give a driver the juice it needs, it's a K20, and I know somebody who was lucky enough to find one for £2k second hand…

As for only having 13A plugs, just set the front panel to only draw a relevant amount of juice. No need for different amps.


Posted By: bee
Date Posted: 25 December 2012 at 4:51pm
very true lev, in an ideal world we would all have 2 rigs one for venues with 32's and one for 13amps lol.... this is one and the main thing when selecting very high power drivers will they suit your bread and butter gigs....


Posted By: bee
Date Posted: 25 December 2012 at 4:54pm
yes this is true you could just limit the current draw on amps..(Powersoft pkn etc)


Posted By: luton_soundman
Date Posted: 25 December 2012 at 5:30pm
celestions havnt proved them selves yet though. all that extra power but in a hall havnt outdone 50 scoops for throw, spl or quality yet. So so far cnt warrant needin more amps for them.  


Posted By: levyte357-
Date Posted: 25 December 2012 at 5:50pm
Originally posted by toastyghost toastyghost wrote:

I was only asking if Lev had access to a K20 and if he had tried it, as he seems to respect the K10 but states these drivers are power hungry. If anything can give a driver the juice it needs, it's a K20, and I know somebody who was lucky enough to find one for £2k second hand…


Yes, respect is due to K10, proved itself 2 ohm stereo, bass heavy material, tortuous environment, across '50s.

I do have access to K20s.

Have already tested CF18s with bridged transformer amp, and know exactly what driver needs/can take.

My interest is in drivers that can easily be driven 4x a side on K10s/PL9s/FFAs/E90s, or 2x a side on transformer amps.


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Global Depopulation - Alive and Killing.


Posted By: bee
Date Posted: 25 December 2012 at 6:27pm
there is more to sub base than just scoops, there are so many good sub designs the suit every need and event, yes they sound good in scoops but allso sounds good in other designs. in the past month have done dance events, live bands, dance hall and roots, every event used differant kit suited to the type of events.... this is what one needs to look at when choosing drivers, will the driver suit the events u do...... luton i no u don't like the cf18 or ligwa cabs, but u do like butt jointed non braced cabs.... your words not mine.... 


Posted By: luton_soundman
Date Posted: 25 December 2012 at 6:41pm
I Like ligwa cabs, just got ligwa sales of both scoops and kick bins and soon to be midtops so don't put words into my mouth. its not that I don't like the driver, just sayin for many of us it hasn't proved itself yet, just like tmax took time for users to get cabs right for them and make them shine. why do you have to try get personal for? your a clown. many ppl have gne gp with mdf non mouth brace scoop and sounded gd. let alone smaller venues.


Posted By: luton_soundman
Date Posted: 25 December 2012 at 6:44pm
yes there is more to the world than scoops but tis thread is posted in the scoop forum for discussion on scoops! 


Posted By: levyte357-
Date Posted: 25 December 2012 at 6:49pm
Originally posted by bee bee wrote:

there is more to sub base than just scoops


Yes Ben, but this is the Scoop forum. We discuss scoops here.

In other forums, they'll discuss CF18 use in other cabs.





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Global Depopulation - Alive and Killing.


Posted By: JahMic
Date Posted: 25 December 2012 at 7:28pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

any new thoughts on the CF18VJD


Needs the right box, and tufty amp to shine.

Give thanks Lev
I have modded eminence scoops. And i got a crown itect 8000 . Would this combo work well. 


Unfortunately, ITECH 8K will run out of steam way before properly driving the Celestion.

I know, because I have one of the Celestions, and have also seen the ITECH driving '50s.



So i'm better off holding out and getting the 50s for the itect ?


Posted By: luton_soundman
Date Posted: 25 December 2012 at 7:40pm
itech on proper 50 scoops sounded beautiful, not the most powerful amp but musically was a pleasure to listen to 


Posted By: studio45
Date Posted: 25 December 2012 at 7:45pm
The Itech 8000 is what I would call a very big amp. If you hang two 8 ohm drivers off each channel it should give them 2000 watts each. The peak output voltage is apparently 255 volts. What did you see it do when it was asked to power these Celestions?

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Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA


Posted By: JahMic
Date Posted: 25 December 2012 at 7:58pm
Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

[QUOTE=JahMic]any new thoughts on the CF18VJD


Needs the right box, and tufty amp to shine.

Give thanks Lev
I have modded eminence scoops. And i got a crown itect 8000 . Would this combo work well. 


Unfortunately, ITECH 8K will run out of steam way before properly driving the Celestion.

I know, because I have one of the Celestions, and have also seen the ITECH driving '50s.



Also how much power does it take per driver to get the Celestions going. Reason for all the questions is i can get the cf18vjd $300 bucks cheaper than the 1850s. 


Posted By: Motion54
Date Posted: 25 December 2012 at 8:36pm
Itech 8000's like other lightweights don't usually give you full rated power spec. I've used Itech 8000 on 1851's and amp hasn't given me full potential of driver.

I would say for fast pace dance/house music, Itech will Fi what it says on the tin, but lazy long bass noted found in reggae music, the Itech does run out of steam!!


Posted By: UpComingSound
Date Posted: 25 December 2012 at 8:38pm
u said there more subs other then scoops, lol not for me luv the scoops


Posted By: studio45
Date Posted: 25 December 2012 at 8:47pm
So essentially you guys reckon the Crown will not hold up the required ~126 volts on its output for timescales longer than 1 second? 

I respect these amps as I have seen a pair drive 12 double-18" bandpass bins - the Nexo S2, which contains 6 ohm drivers, hence with a bit of series paralleling you can get 4x, 4 ohm channels out of 12 bins - and create serious thunder in a large commercial venue, whilst sitting in the amp room idly flicking a -10dB light and never getting even slightly warm.


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Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA


Posted By: Motion54
Date Posted: 25 December 2012 at 9:02pm
What kinda music was it driving?


Posted By: levyte357-
Date Posted: 26 December 2012 at 12:46am
Originally posted by JahMic JahMic wrote:

Also how much power does it take per driver to get the Celestions going. Reason for all the questions is i can get the cf18vjd $300 bucks cheaper than the 1850s. 


That is a pretty valid reason for getting the Celestions. Is that $300 cheaper per driver !?

But you will have to spend the driver money saved on very serious amp power.




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Global Depopulation - Alive and Killing.


Posted By: levyte357-
Date Posted: 26 December 2012 at 12:56am
Originally posted by studio45 studio45 wrote:

So essentially you guys reckon the Crown will not hold up the required ~126 volts on its output for timescales longer than 1 second? 

I respect these amps as I have seen a pair drive 12 double-18" bandpass bins - the Nexo S2, which contains 6 ohm drivers, hence with a bit of series paralleling you can get 4x, 4 ohm channels out of 12 bins - and create serious thunder in a large commercial venue, whilst sitting in the amp room idly flicking a -10dB light and never getting even slightly warm.


I was very under-whelmed by lack of SPL from ITECH8 driving 2x PD1850s per channel.

Smooth bass notes yes, pressure no.

This amp definitely cannot drive 2x Celestions per channel.






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Global Depopulation - Alive and Killing.


Posted By: JahMic
Date Posted: 26 December 2012 at 2:07am
Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Also how much power does it take per driver to get the Celestions going. Reason for all the questions is i can get the cf18vjd $300 bucks cheaper than the 1850s. 


That is a pretty valid reason for getting the Celestions. Is that $300 cheaper per driver !?

But you will have to spend the driver money saved on very serious amp power.



  Yeah 300 us dollars cheaper per driver. And i'm on budget. I do have a crest 8002 already . And i could sell the Itech, and with the money from that get a deton 4400 and two cf18 drivers.  But will the deton and the crest have enough power for the cf18?  I would be running 2 scoops of each amp bridged. 


Posted By: PauliePaul
Date Posted: 26 December 2012 at 10:49am
I've used I-T8's on all type of genres, powering (amongst other cabinets) double PD.1850 loaded subs, could never fault them to be honest, never ran out of steam on any occasion...
However, my signal chain was.... source --> mixing desk --> DSP --> amplifier.... very simple and never over processed. All signal processing (inc EQ'ing) was done in the DSP to match system being run, minor adjustments were made on the desk. On a few occasions, a KT DN360 was inserted in the desk, but ususally, this was not needed.
 
Back to the original topic - the PD.1850 had it's 25th birthday this year - it still seems to be holding it's own against all the new drivers, even if it is in some people's view 'old hat'.... LOL. New products have come (and sometimes gone) from various manufacturers, but none have really seemed to dent the '50's dominance of certain markets.


Posted By: levyte357-
Date Posted: 26 December 2012 at 12:33pm
Originally posted by JahMic JahMic wrote:

  Yeah 300 us dollars cheaper per driver. And i'm on budget. I do have a crest 8002 already . And i could sell the Itech, and with the money from that get a deton 4400 and two cf18 drivers.  But will the deton and the crest have enough power for the cf18?  I would be running 2 scoops of each amp bridged. 


If definitely getting CF18s, maybe just get 2x first, to ensure they are happy in your cabs.

The Deton Aone 4400 will drive 2x CF18 in bridge no problem.

Before buying that amp, also check used price of QSC 5050/4050HD.

Deton are very, very strong, but still Chinese, used QSC would be preferable if available.
Crest 8001 "might" also do the job in bridge, if you can borrow one first to test.

Also don't forget, if you get the more expensive 1850s, 1x 9001 will power 8x of those. Wink

So do plenty of price checking and comparison, before spending.


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Global Depopulation - Alive and Killing.


Posted By: bee
Date Posted: 26 December 2012 at 12:56pm
Paulie very true.....
 
Luton lol.... Happy cristmas m8t, its just a bit of banter. Next time we meet up the beers is on me. Yes we have had a few moments this year, but its just banter from my part.
 
opps re scoop section, my comments are based on a few box types not just scoops.


Posted By: studio45
Date Posted: 26 December 2012 at 1:49pm
Originally posted by levyte357- levyte357- wrote:



I was very under-whelmed by lack of SPL from ITECH8 driving 2x PD1850s per channel.

Smooth bass notes yes, pressure no.

This amp definitely cannot drive 2x Celestions per channel.

How many times have you seen this amp try to drive these drivers? I still don't believe it really has this lack of cojones. It's very expensive so, at that price, if it really didn't do what it says on the tin why wouldn't people send it back?

I have, though, seen evidence to support your recommendation of a Crest 8001 per 2 drivers; I've been very surprised to see one run out of steam trying to power 4 1850's in mini scoops. It was an American import so came with a power cable like an elephant's trunk presumably to deal with the vast current required at 110v input and, of course, is the weight of a small planet and too deep to fit in most racks. However, it would also seem that unless you run it at 2 ohms a side/4 ohm bridge it will clip like a bastard before even enough bass to make a psytrance hippy dance has been achieved. An old Carver PT1800 is able to spank it into next week at 4 ohms. Although they look and feel big, they are current monsters only, and have comparatively low output voltage. 
(Personally, I would hang 4x 400 watt Fanes off each side, and blow people's trousers off LOL)


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Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA


Posted By: levyte357-
Date Posted: 26 December 2012 at 2:09pm
Originally posted by studio45 studio45 wrote:


How many times have you seen this amp try to drive these drivers? I still don't believe it really has this lack of cojones. It's very expensive so, at that price, if it really didn't do what it says on the tin why wouldn't people send it back?

The first time I saw it, was infinitely relevant, as it was an actual amp test with scoops, and Roots Reggae, and "ultra realistic" venue.

Amp paled into insignificance, compared to "less powerful", Inf8MK2. LOL

How can an amp rated at 4kwpc @ 4 ohm, fail to exceed or even "match", same SPL as amp only rated at 2.5kwpc @ 4 ohms, on SAME load, with same music source, in same venue.

Only one possible conclusion.. B*llox specs.

2nd time was in GP, driving 2x PD1851s per channel. Again clipping way before giving each driver approx 1KW, and that was on 32A supply.Dead

Should be renamed, Crown JOKETECH 8.



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Global Depopulation - Alive and Killing.


Posted By: studio45
Date Posted: 26 December 2012 at 2:28pm
I see. That does sound like quite convincing testing. Only one thing that I can think of, was the last-stage highpass filtering the same in all cases (both tests, both amps)? Otherwise, the Itech may have been un-highpassed and pouring in power below 25Hz where all it does is flap the cone about, whereas the Inf 8 could have had the highpass on and been directing all its power into frequencies that actually make noise in the room. I assume pre-amps were being used, so there would have been plenty of <25Hz level in the driving signal?

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Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA


Posted By: levyte357-
Date Posted: 26 December 2012 at 2:34pm
Originally posted by studio45 studio45 wrote:

I see. That does sound like quite convincing testing. Only one thing that I can think of, was the last-stage highpass filtering the same in all cases (both tests, both amps)? Otherwise, the Itech may have been un-highpassed and pouring in power below 25Hz where all it does is flap the cone about, whereas the Inf 8 could have had the highpass on and been directing all its power into frequencies that actually make noise in the room. I assume pre-amps were being used, so there would have been plenty of <25Hz level in the driving signal?


At Southall Amp test, Ren operated his own control tower, so unsure of actual HPF, but can positively guarantee, ALL AMPS tested under SAME CONDITIONS.

As regards to ITECH 8 performance on PD1851s in GP, can safely say, I'd much much prefer much cheaper used CA18/MA5000VZ to one of those.




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Global Depopulation - Alive and Killing.


Posted By: luton_soundman
Date Posted: 26 December 2012 at 2:49pm
cones were in full control and never flapping around. ren is a real engineer and builder. you will never see his speakers flapping around or overdriven. this was not an amatuer testin session conducted by a random with equipment. all who were there can verify this, even matrix matt! 


Posted By: levyte357-
Date Posted: 26 December 2012 at 3:09pm
Originally posted by luton_soundman luton_soundman wrote:

cones were in full control and never flapping around. ren is a real engineer and builder. you will never see his speakers flapping around or overdriven. this was not an amatuer testin session conducted by a random with equipment. all who were there can verify this, even matrix matt! 


+1

Obviously, for those who run HPF lower than 50hz, and add  sub boost, and use  PDs/CF18s in scoops, then the serious high end lightweights are suitable.

For other users, ITECH8 and other similar amps would be fine for many other music types.


http://www.nndb.com/people/776/000023707/johnny-cash-line.jpg


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Global Depopulation - Alive and Killing.


Posted By: PauliePaul
Date Posted: 26 December 2012 at 6:35pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by studio45 studio45 wrote:


How many times have you seen this amp try to drive these drivers? I still don't believe it really has this lack of cojones. It's very expensive so, at that price, if it really didn't do what it says on the tin why wouldn't people send it back?

The first time I saw it, was infinitely relevant, as it was an actual amp test with scoops, and Roots Reggae, and "ultra realistic" venue.

Amp paled into insignificance, compared to "less powerful", Inf8MK2. LOL

How can an amp rated at 4kwpc @ 4 ohm, fail to exceed or even "match", same SPL as amp only rated at 2.5kwpc @ 4 ohms, on SAME load, with same music source, in same venue.

Only one possible conclusion.. B*llox specs.

2nd time was in GP, driving 2x PD1851s per channel. Again clipping way before giving each driver approx 1KW, and that was on 32A supply.Dead

Should be renamed, Crown JOKETECH 8.


"Quote from levyte357
 
In short, the Results "IMHO"

1. Powersoft K10 - The Ruler - Tremendous sub and SPL across the four scoops, no notes missing or premature sub roll off

2. Powersoft K8 - More of the same, just bit less aggressive

3. Crown ITECH-8000 - As good as people say and the suprise of the day.. Not the force/SPL of K10, but many preferred the musical notes, and said low extension even exceeded K10"

Surely that's not a change of tune is it....? The above is quoted from the amplifier testing session thread - seems like a different story.... or amp... or something....











Posted By: studio45
Date Posted: 26 December 2012 at 7:30pm
I have BSS EPC780 amps, and I love them very dearly even though they are small, small potatoes power-wise compared to these amps, and I would probably spend quite a lot of time defending them on forums.
What I am taking from this discourse is the the ITech did not make Lev happy, in a way that the Inf 8 and possibly the Powersofts were able to. Happiness is a complicated thing and has many factors. Personally, if I spent that much on an amp, I would expect to be VERY happy indeed.

Regardless of how it made me feel in a philosophical sense, I would also expect to be able to measure 126 volts at its output into a 4 ohm load all the livelong day, and if I could not, I would expect a refund from Crown.


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Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA


Posted By: studio45
Date Posted: 26 December 2012 at 7:38pm
By the way, highpass @50hz is for hard techno records on vinyl decks in an unsolvable feedback situation only. I'd give that Cash cut at least till 35 before I stopped it. There's a double bass on there, and Cash was a baritone, you know.....

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Studio45 - Repairs & Building Commotion Soundsystem -Mobile PA


Posted By: levyte357-
Date Posted: 27 December 2012 at 12:31am
Originally posted by PauliePaul PauliePaul wrote:

Originally posted by levyte357- levyte357- wrote:



"Quote from levyte357
 
In short, the Results "IMHO"

1. Powersoft K10 - The Ruler - Tremendous sub and SPL across the four scoops, no notes missing or premature sub roll off

2. Powersoft K8 - More of the same, just bit less aggressive

3. Crown ITECH-8000 - As good as people say and the suprise of the day.. Not the force/SPL of K10, but many preferred the musical notes, and said low extension even exceeded K10"

Surely that's not a change of tune is it....? The above is quoted from the amplifier testing session thread - seems like a different story.... or amp... or something....



Was told "incorrectly" by someone during that test, the ITECH8 wasn't clipping, and amp had plenty of headroom left.

Then told by number of people, who had been watching the amp closely, amp, clipped, was about to thermal, and then gains backed down. All of this with most people not knowing. Wink

Then in GP, without "molly cuddling", the amp was giving all it had, and clipping hard, not that much coming out the PD scoops, for all to see.Wink

As said many times since, only amps that day, which didn't thermal or clip on 4 ohm stereo PD 1850 load, was Inf8Mk2 & K10.

Wondering why you're defending JokeTech8, almost 2 years later. Don't suppose you have one coming up for sale soon ..? Wink





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Global Depopulation - Alive and Killing.


Posted By: levyte357-
Date Posted: 29 December 2012 at 12:50am
Any further scoop designs being used for CF18?


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Global Depopulation - Alive and Killing.


Posted By: JahMic
Date Posted: 31 December 2012 at 6:27pm
Originally posted by levyte357- levyte357- wrote:

Any further scoop designs being used for CF18?

Ever heard this  driver in a ass rx18? I have not. wanted to know if anyone has


Posted By: SBC
Date Posted: 31 December 2012 at 6:31pm
some of us have heard 4x loaded into ASS scoops recently...

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F.T.S.S.


Posted By: JahMic
Date Posted: 31 December 2012 at 7:00pm
Originally posted by SBC SBC wrote:

some of us have heard 4x loaded into ASS scoops recently...

So how did it sound?


Posted By: levyte357-
Date Posted: 31 December 2012 at 7:13pm
Originally posted by JahMic JahMic wrote:

Originally posted by SBC SBC wrote:

some of us have heard 4x loaded into ASS scoops recently...

So how did it sound?


Was impressive in many ways, but to many, didn't cross all the boxes.


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Global Depopulation - Alive and Killing.


Posted By: luton_soundman
Date Posted: 31 December 2012 at 7:42pm
ppl I know with celestion are going bk t PD again


Posted By: JahMic
Date Posted: 31 December 2012 at 9:27pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by SBC SBC wrote:

some of us have heard 4x loaded into ASS scoops recently...

So how did it sound?


Was impressive in many ways, but to many, didn't cross all the boxes.

What did u think?


Posted By: JahMic
Date Posted: 31 December 2012 at 9:28pm
Originally posted by luton_soundman luton_soundman wrote:

ppl I know with celestion are going bk t PD again
Due to ?


Posted By: levyte357-
Date Posted: 31 December 2012 at 9:30pm
Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by SBC SBC wrote:

some of us have heard 4x loaded into ASS scoops recently...

So how did it sound?


Was impressive in many ways, but to many, didn't cross all the boxes.

What did u think?


It worked, but ASS small chamber scoop, not the optimal cab for it.


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Global Depopulation - Alive and Killing.


Posted By: JahMic
Date Posted: 31 December 2012 at 9:59pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by SBC SBC wrote:

some of us have heard 4x loaded into ASS scoops recently...

So how did it sound?


Was impressive in many ways, but to many, didn't cross all the boxes.

What did u think?


It worked, but ASS small chamber scoop, not the optimal cab for it.

 So would this driver work better in a medium or deep chamber scoop?


Posted By: levyte357-
Date Posted: 31 December 2012 at 10:13pm
Originally posted by JahMic JahMic wrote:


 So would this driver work better in a medium or deep chamber scoop?


That's some valuable information you asking there mate. LOL

Many trying to work that one out, many think they have it worked out & don't.




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Global Depopulation - Alive and Killing.


Posted By: johnplayerson
Date Posted: 31 December 2012 at 11:34pm
maybe post a old picture of the two units. Surely a picture will give us the entire reason for which is better.  Quote levy on cv 5000 LOL , inside joke:)


Posted By: SBC
Date Posted: 01 January 2013 at 6:19pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by SBC SBC wrote:

some of us have heard 4x loaded into ASS scoops recently...

So how did it sound?


Was impressive in many ways, but to many, didn't cross all the boxes.

What did u think?


It worked, but ASS small chamber scoop, not the optimal cab for it.

imo it didn't work, too one noted and not enough tone and detail. agree with chamber being too small, as they sounded choked at times. these drivers didn't seem to throw much either, but that could be due to many things. 


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F.T.S.S.


Posted By: bee
Date Posted: 01 January 2013 at 6:24pm
cheap plug.....
There will 4 cf18 loaded scoops at the ligwa show case event in a few weeks time.....
As for small, medium, large chamber, what would need to be done is a direct a b... to date this has not been done. 


Posted By: JahMic
Date Posted: 19 January 2013 at 3:31am
Any one heard the cf18vjd in a hog scoop?


Posted By: levyte357-
Date Posted: 19 January 2013 at 5:45am
Originally posted by JahMic JahMic wrote:

Any one heard the cf18vjd in a hog scoop?


If anyone wants to try it, have a mate selling driver in exc condition.

Recently heard a rumour, CF18VJD will work in any cab PD1851 will work in, but is a little stronger. Wink


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Global Depopulation - Alive and Killing.


Posted By: JahMic
Date Posted: 19 January 2013 at 8:42am
Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Any one heard the cf18vjd in a hog scoop?


If anyone wants to try it, have a mate selling driver in exc condition.

Recently heard a rumour, CF18VJD will work in any cab PD1851 will work in, but is a little stronger. Wink


Have heard super scoop and hogs sound good with 1851. But both of them are not deep enough for the CF18VJD


Posted By: levyte357-
Date Posted: 19 January 2013 at 12:48pm
Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Any one heard the cf18vjd in a hog scoop?


If anyone wants to try it, have a mate selling driver in exc condition.

Recently heard a rumour, CF18VJD will work in any cab PD1851 will work in, but is a little stronger. Wink


Have heard super scoop and hogs sound good with 1851. But both of them are not deep enough for the CF18VJD


Double thickness/36mm driver baffle will help in most cases.

Would be trivial matter to mod SS18, to house CF18.



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Global Depopulation - Alive and Killing.


Posted By: JahMic
Date Posted: 21 January 2013 at 11:47pm



Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Any one heard the cf18vjd in a hog scoop?


If anyone wants to try it, have a mate selling driver in exc condition.

Recently heard a rumour, CF18VJD will work in any cab PD1851 will work in, but is a little stronger. Wink


Have heard super scoop and hogs sound good with 1851. But both of them are not deep enough for the CF18VJD


Double thickness/36mm driver baffle will help in most cases.

Would be trivial matter to mod SS18, to house CF18.



 Yes true.Would u leave the dog leg in for a ss18 with cf18vjd? 


Posted By: JahMic
Date Posted: 24 January 2013 at 7:32pm
Originally posted by JahMic JahMic wrote:




Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Originally posted by levyte357- levyte357- wrote:

Originally posted by JahMic JahMic wrote:

Any one heard the cf18vjd in a hog scoop?


If anyone wants to try it, have a mate selling driver in exc condition.

Recently heard a rumour, CF18VJD will work in any cab PD1851 will work in, but is a little stronger. Wink


Have heard super scoop and hogs sound good with 1851. But both of them are not deep enough for the CF18VJD


Double thickness/36mm driver baffle will help in most cases.

Would be trivial matter to mod SS18, to house CF18.



 Yes true.Would u leave the dog leg in for a ss18 with cf18vjd? 


Any one with any thoughts on if i should remove the dogleg for super scoop 18 with a cf18vjd? 



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