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Amp to run 4 x 18TLW3000 8/4 Ohms!!!

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Elliot Thompson View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 1:05pm
Originally posted by tehnicar007 tehnicar007 wrote:

Hi guys !
What Amp you recommend to run 4 x 18TLW3000 8/4 Ohms!!!

Ciaaao


Powersoft K20

When you start to focus on drivers that require 3600 watts program power, you are placing yourself with very limited options in terms of amplifiers.

Best Regards,
Elliot Thompson
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Father-Francis Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 1:16pm
Don't forget FFA10000
Music is the strongest form of magic.(+45 31879997)blakmanpro@gmail.com
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 1:26pm
Originally posted by Father-Francis Father-Francis wrote:

Don't forget FFA10000


I always liked the sound of FFA. I would imagine the lack of popularity on Speakerplans is due to not having an on-board DSP.



Best Regards, 
Elliot Thompson
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Father-Francis Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 1:52pm
Originally posted by Elliot Thompson Elliot Thompson wrote:

Originally posted by Father-Francis Father-Francis wrote:

Don't forget FFA10000


I always liked the sound of FFA. I would imagine the lack of popularity on Speakerplans is due to not having an on-board DSP.



Best Regards, 

i like them too , I'l be heading over to visit Dave after the holidays , i got three powersoft racks now i need an FFA rack , Dsp or no dsp Big smile sometimes we should just think of the sound we provide 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote concept-10 Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 2:07pm
Originally posted by U.Viktor U.Viktor wrote:

Originally posted by efinque efinque wrote:

Originally posted by mini-mad mini-mad wrote:

...surely that's a topology problem... not a PSU problem.

I read class AB amps have the best efficiency. However, a linear PSU will dissipate heat much more effectively than a SMPS, although switchmodes are generally working at 70-80% while a typical linear PSU is somewhere around 50-60%.. they weight a lot more, whereas with a switchmode you get switching noise, which, depending on the quality may or may not be audible.

EDIT : people have been succesfully using SMPS' in effect pedals etc due to their size, and I've seen some amps using them too.. maybe for small speakers they could be ok, but for heavy duty stuff like driving subs I wouldn't put my money on one.


No. Class AB amp shave almost the worst conversion efficiency ~ 50-60% maximum. Also plagued by the problem I have mentioned above^.

Class-D ( high frequency switching ) amps could have efficiency above 85% while very few reaches ~ 95% or more.

Linear (50/60HZ transformer) and poor switching power supplies without PFC are equally bad due their mains current distortion originated from 'peak rectification', which end sometimes as bad as they consumes 5X or 10X of the output power.
For example a 1000W SMPS(without PFC) or toroidal transformer would needs 4.3A average (6.2A peak) from the mains if the power factor would be correct (1.0) but unfortunately - due peak rectification - usually pulls out 50 or 100A peaks with very narrow conducting angle which is bad for the mains, generators and could create dangerous over Voltage spikes on the opposite phases. Learn and understand why good power factor are so important.

As there are thousands of inukes and old toroid amps being driven to with an inch of their lives every weekend why are we not seeing the problems you harp on about in every thread? Seriously if the world is going to end when using one then why has it not ended?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 3:13pm
Originally posted by concept-10 concept-10 wrote:

Originally posted by U.Viktor U.Viktor wrote:

Originally posted by efinque efinque wrote:

Originally posted by mini-mad mini-mad wrote:

...surely that's a topology problem... not a PSU problem.

I read class AB amps have the best efficiency. However, a linear PSU will dissipate heat much more effectively than a SMPS, although switchmodes are generally working at 70-80% while a typical linear PSU is somewhere around 50-60%.. they weight a lot more, whereas with a switchmode you get switching noise, which, depending on the quality may or may not be audible.

EDIT : people have been succesfully using SMPS' in effect pedals etc due to their size, and I've seen some amps using them too.. maybe for small speakers they could be ok, but for heavy duty stuff like driving subs I wouldn't put my money on one.


No. Class AB amp shave almost the worst conversion efficiency ~ 50-60% maximum. Also plagued by the problem I have mentioned above^.

Class-D ( high frequency switching ) amps could have efficiency above 85% while very few reaches ~ 95% or more.

Linear (50/60HZ transformer) and poor switching power supplies without PFC are equally bad due their mains current distortion originated from 'peak rectification', which end sometimes as bad as they consumes 5X or 10X of the output power.
For example a 1000W SMPS(without PFC) or toroidal transformer would needs 4.3A average (6.2A peak) from the mains if the power factor would be correct (1.0) but unfortunately - due peak rectification - usually pulls out 50 or 100A peaks with very narrow conducting angle which is bad for the mains, generators and could create dangerous over Voltage spikes on the opposite phases. Learn and understand why good power factor are so important.

As there are thousands of inukes and old toroid amps being driven to with an inch of their lives every weekend why are we not seeing the problems you harp on about in every thread? Seriously if the world is going to end when using one then why has it not ended?

Never expected both ends of the spectrum when I made that comment LOLLOL

..you want to solve this problem then I suggest redesigning the power transistor!

Efinque. You many want to look that up again AB are awful when it comes to eff%

Vicktor. Stop scare mongering... distortion on the current entering the PSU being a problem? I suggest building your own power station.
And current being out of phase on ANY type of AC circuit it just one of those thing inherent in the system.  It won't trigger an apocalypse. Less caffeine mate and try to get out in the sun a bit more.

I love SP. You guys remind me I could be a lot (mentally) worse off...
  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Father-Francis Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 3:28pm

I love SP. You guys remind me I could be a lot (mentally) worse off...

lol , Mini-Mad you are just alittle mad 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 3:59pm
Originally posted by Father-Francis Father-Francis wrote:


I love SP. You guys remind me I could be a lot (mentally) worse off...

lol , Mini-Mad you are just alittle mad 

Agreed... but my wife does her best to keep me inline. I'm not sure I'm cut out for the 21st century. To much nonsense everywhere forced on you on a daily basis.




So.......... back on topic.


...sorry
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Battered Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 4:03pm
mini-mad kind of reminds me of the midget fortune teller that escaped from prison............

Small medium at large!!

Yeah, I don’t know what that means either, but it has been a **** of a few weeks and my brain is fried. And now I’m going to sleep to forget all about working with w***ers!!

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Post Options Post Options   Thanks (0) Thanks(0)   Quote concept-10 Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 4:25pm
I love SP. You guys remind me I could be a lot (mentally) worse off..

I know that feeling, if I get to the point of feeling a bit mental I spend half an hour on Facebook then realise life could be a lot worse.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 5:00pm
Originally posted by Elliot Thompson Elliot Thompson wrote:

Originally posted by Father-Francis Father-Francis wrote:

Don't forget FFA10000


I always liked the sound of FFA. I would imagine the lack of popularity on Speakerplans is due to not having an on-board DSP.



Best Regards, 


Dave has world class DSP in his amps for a few years now

I'm all about headroom but if you get a huge amp, even on a driver with this high AES rating, and you don't limit it and filter it properly then be prepared to smoke some coils. For that reason, if you don't have a SERIOUS DSP and know how to use it, you'd be better off with K10, or K20 with DSP, or a Linea 44M20, or XTA APA4E8 plus paying someone to actually measure your driver in cabinet to calculate the long term RMS rating in volts and the heating threshold of the coil.

Edited by toastyghost - 18 December 2018 at 5:03pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2018 at 5:54pm
ppl being running crowns, crest hh , c-audio ect ect for donkeys years flat out , even me on 8/12 hours sessions no problem

tha keep chuggling along nicely lol, yes do understand not as powerfull for nowadays drivers , but still

comments concept lol cracking up
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