INSIDE CLASS D BASS AMPS

[grandad]

My recent purchase of a TCE BG250-208 had me wondering what module they used. Is it the B&O, keeping all things Danish so to speak.

Also came across this article:


http://www.audioholics.com/audio-amplifier/clone-amplifiers

and this:

http://www.icepower.bang-olufsen.com/en/company/history/


Will all audio/bass amps end up with the same insides, just different packaging & labels?

I have to say I'm impressed with the performance my new class D amp.

[Dood]

I recall seeing a post on a P.A related forum where users posted the gut shots of their power amplifiers. Maybe you've planted the seeds for a very interesting thread that quite literally lifts the lid on manufacturers designs. Open up and say "aaaaaaah", the Doctor is ready for his next patient!

[grandad]

Maybe someone knows.

For those of a technical mindset:

http://www.soundonsound.com/sos/jun06/articles/loudandlight.htm

[MoonBassAlpha]

The difference between hifi and bass amps is, though the output stage may have the same modules, each manufacturer will have their own preamp designs that will have a far greater influence on the tone goals than required for a hifi amp.

[Beer of the Bass]

The implementation of limiters can differ across different manufacturers too. I came across a schematic for my GK MB200 online and there is an LED/FET optoisolator fed by the speaker output which reduces the gain of a stage at the end of the preamp. This will affect how the amp responds to peaks even compared to another using the same module.

[grandad]

I have the 'Spectracomp' loaded as the one effect as I like the little bit of extra 'body' it adds at about 10-11 o'clockish.

[Passinwind]

[quote name='grandad' timestamp='1455961612' post='2983914']
My recent purchase of a TCE BG250-208 had me wondering what module they used. Is it the B&O, keeping all things Danish so to speak.
[/quote]

Post a picture and I will be happy to tell you. I think TCE use proprietary modules for most of their stuff though, as do Peavey, Ampeg, Markbass, and Carvin.

BTW, there are a few different series of ICE modules, both with and without built in power supplies, and then a myriad of different possible implementation schemes.

Edit: found a picture here: http://shop.fixtronix.com/viewcategory.php?groupid=10

Definitely not an ICEpower or Hypex piece.

Edited February 22, 2016 by Passinwind

[grandad]

Thanks, it does look like a proprietary board.

[wateroftyne]

Yip. There's something about the module that doesn't sound nice to me, so I find it hard to get excited about new Class D's.

I'll be back on board in a few generations' time, hopefully.

[Chienmortbb]

I would guess that that uses one of the NXP, Texas or ST chips. I cannot see a discrete circuit being that compact.

Of course that does not answerr the question.

Edited February 23, 2016 by Chienmortbb