Speakerplans.com Forums : Replacement driver choices for a double 12" cab, http://forum.speakerplans.com/ This is an XML content feed of; Speakerplans.com Forums : General Forum : Replacement driver choices for a double 12" cab, Copyright (c) 2006-2012 Web Wiz Forums - All Rights Reserved. Sat, 04 Feb 2012 22:44:24 +0000 Sun, 13 Jan 2008 13:19:54 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 10.10 360 forum.speakerplans.com/RSS_post_feed.asp?TID=10871 Speakerplans.com Forums http://forum.speakerplans.com/forum_images/splans.gif http://forum.speakerplans.com/ Replacement driver choices for a double 12" cab, : PDN.12MH25 - Neodymium They are... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post130010.html#130010 Author: CPHSOUNDSYSTEM
Subject: 10871
Posted: 13 January 2008 at 1:19pm

PDN.12MH25 - Neodymium
They are Pd 12" rated at 300rms
not to sure on the price though
]]> Sun, 13 Jan 2008 13:19:54 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post130010.html#130010 Replacement driver choices for a double 12" cab, : Kevin, I have just read your first... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129843.html#129843 Author: Tony Wilkes
Subject: 10871
Posted: 12 January 2008 at 6:34pm

Kevin, I have just read your first post again and I think that the Bass bins are already built, if so please ignore my last post. I must read more carefully next time.

Tony
]]> Sat, 12 Jan 2008 18:34:09 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129843.html#129843 Replacement driver choices for a double 12" cab, : I would question the use of PD184's... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129769.html#129769 Author: Tony Wilkes
Subject: 10871
Posted: 12 January 2008 at 12:44pm

I would question the use of PD184's whilst they work OK in a reflex box they are not ideal.
Have a look at the Beyma 18P1000Nd or 18P1200Nd these really have moved the goal posts.

Another great choice would be the BMS18N850v2 which work beautifully in a 140l enclosure but are pretty expensive(£270).

Tony
]]> Sat, 12 Jan 2008 12:44:23 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129769.html#129769 Replacement driver choices for a double 12" cab, : It's a nice idea but ultimately... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129767.html#129767 Author: ceharden
Subject: 10871
Posted: 12 January 2008 at 12:37pm

It's a nice idea but ultimately probably causes more issues than it solves.  In these boxes the frequencies are covered easily.  Taking mine for example:

The 12" driver is capable of playing to probably 3kHz fairly cleanly (ignore the fact it'll get a bit beamy).  The compression driver and horn combo is useable down to 500Hz (although you wouldn't want to because of power handling issues).

This means that at a crossover point of 1.2kHz both drivers are capable of doing an octave either side of it, making for a very clean transition between the two.

]]> Sat, 12 Jan 2008 12:37:48 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129767.html#129767 Replacement driver choices for a double 12" cab, : Just a thought; The bottom... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129765.html#129765 Author: tweeter box
Subject: 10871
Posted: 12 January 2008 at 12:31pm

Just a thought;
 
The bottom 12" keep as a low mid
Change the top 12" to a 10" or 8" and use as a high mid
 
Itll run as a 4 way setup and youll cover the frequencies better.
 
Ive used the B&C comps they give a beautiful sound but cant remember what horns they were!
 
Nice drawing Teks.


Edited by tweeter box - 12 January 2008 at 12:33pm]]> Sat, 12 Jan 2008 12:31:57 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129765.html#129765 Replacement driver choices for a double 12" cab, : No, the 12NDL76 in terms of parameters... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129762.html#129762 Author: ceharden
Subject: 10871
Posted: 12 January 2008 at 12:26pm

No, the 12NDL76 in terms of parameters is closest to the 12MH32 although the neo has about double the excursion capability of the MH32.

12PE32 is a dedicated midrange driver, has a very light cone and only a 2.5"VC and ideally should only be used on mid horns from about 200Hz up.

Although saying that the 12ND710 I use in my mid-tops is a dedicated midrange driver and I use it down to 120Hz.  It does mean there is a bit of a dip in the system between 120Hz and 200Hz but since it's not unusual to put a cut in the EQ around there on most systems, you don't really notice it missing.

]]> Sat, 12 Jan 2008 12:26:02 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129762.html#129762 Replacement driver choices for a double 12" cab, : Wrighty wrote: DE250 = 108.5dB... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129757.html#129757 Author: Tekasis
Subject: 10871
Posted: 12 January 2008 at 11:51am

Originally posted by Wrighty Wrighty wrote:


DE250 = 108.5dB @ 1W @ 1m. 60W continuous (RMS) power handling
PD912 = 97dB @ 1W @ 1m. 300W continuous (RMS) power handling

DE250 continuous SPL = 108.5 + 10log(60/1) = 126.3dB
PD912 continuous SPL = 97 + 10log(300/1) = 121.8dB
   => 2xPD912 continuous SPL = 124.8dB

Therefore, I'd say a single DE250 would keep up with a pair of 12s. Unless they're 100dB neo 12s with 400W RMS power handling like B&C 12NDL76, in which case a single will be almost perfectly matched to the DE250.
 
I'm more than sure I've read somewhere on here which I can't find, but last question before deciding on which 12'' to go for, whether these or the 18Sounds Neo driver.
 
Is the B&C 12NDL76 the Neo version of the B&C 12PE32's ?
 
Cheers.
 
]]> Sat, 12 Jan 2008 11:51:45 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post129757.html#129757 Replacement driver choices for a double 12" cab, : Kevin,Did you see my thread about... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post99956.html#99956 Author: ceharden
Subject: 10871
Posted: 16 July 2007 at 1:47am

Kevin,

Did you see my thread about the cabs I build recently of this type?

http://www.speakerplans.com/forum/forum_posts.asp?TID=10250&KW=cha2214

The cabs have now been fitted with 18Sound 12ND710's which are incredibly efficient and will work well with high crossover points to the HF.

I'm using the currently unavailable PDC14 that you also wanted to use.  I would recommend using a larger compression driver and getting the crossover point down. 

In terms of alternative compression drivers, the 18Sound drivers are worth considering.  They are quite bright sounding and need a bit of work on the processor but that done you get a very detailed sound.  Not particularly expensive.  Also worth looking at how much some of the new B&C 1.4" drivers are, or maybe the DE610.  Definitely recommend the 18Sound 1.4" flares though.

And just to help your decision process if you want to go down the other route a DE250 on 1086XT with a single 12", crossover 2kHz ish is also very nice indeed.Again 18Sound maybe for a 12" or B&C 12NDL76.

Most of the 12" drivers I've suggested will exhibit the roll off on the low end.  This is just due to their high midband efficiency and the very strong magnets used to acheive it.I find a low shelf starting about 160Hz and lifting the low end by 3-4dB tends to flatten it out.The other option is to use a slight overlap with the subs.

Oh, and one twin 12" mid top will keep up with about 3 18" bass bins!


]]> Mon, 16 Jul 2007 01:47:09 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post99956.html#99956 Replacement driver choices for a double 12" cab, : AlfieDring wrote:Tiny word... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post99891.html#99891 Author: kevinmcdonough
Subject: 10871
Posted: 15 July 2007 at 5:18pm

Originally posted by AlfieDring AlfieDring wrote:

Tiny word of warning about the reflex ports in your tops. If you cut them like that the port piece (assuming you need to extend it beyond the baffle depth? - if not ignore all this!) ends up being mightily complicated to cut as its got no 90' angles in it. It has to follow the trap angle to keep the same dimensions throughout the port. You also have to make an angled cut into the baffle or else the port will have a slight constriction at the very end.

Ill show you a picture of what i mean when we sort out the net at home, just moved house ya see :)

Alf



hey,

no need I understand exactly what you mean.

No the port was chosed specifically to be 18mm deep so that it would just be the depth of the badffle wood and essentially just a hole

With the dew drivers the design has changed anyway and its now a long shelf port right across the bottom of the cab, but again just 18 mm deep so very easily made by just making the baffle slightly shorter than the rest of the cab.


k
]]> Sun, 15 Jul 2007 17:18:25 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post99891.html#99891 Replacement driver choices for a double 12" cab, : Tiny word of warning about the... http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post99889.html#99889 Author: AlfieDring
Subject: 10871
Posted: 15 July 2007 at 4:48pm

Tiny word of warning about the reflex ports in your tops. If you cut them like that the port piece (assuming you need to extend it beyond the baffle depth? - if not ignore all this!) ends up being mightily complicated to cut as its got no 90' angles in it. It has to follow the trap angle to keep the same dimensions throughout the port. You also have to make an angled cut into the baffle or else the port will have a slight constriction at the very end.

Ill show you a picture of what i mean when we sort out the net at home, just moved house ya see :)

Alf
]]> Sun, 15 Jul 2007 16:48:38 +0000 http://forum.speakerplans.com/replacement-driver-choices-for-a-double-12-cab_topic10871_post99889.html#99889