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Old 6th September 2013, 05:35 PM   #1
jakja83 is offline jakja83  Norway
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Default Budget Class-D amp, what modules?

I am in need of 4 channels of clean good sounding power for a DIY OB-speaker.

I do not need a lot of power, but 50+ decent watts will do.

What amp and technology should I be looking at?

I was looking at something like two 2 x 50ASX2 Icepower modules, but where can one buy them?

Last edited by jakja83; 6th September 2013 at 05:41 PM.
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Old 6th September 2013, 09:20 PM   #2
danzz is offline danzz  Spain
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What about this...

2.0 TPA3116

Or maybe

4.1 TPA3116

Check this thread
thread
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Old 3rd October 2013, 01:59 PM   #3
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Hi,

I own a Roomplayer II that use a 50ASX2 module for the amplification.
Sound is very good with lots of details, much better than my otter TAMP a Poppulse T150 using a TA2024 chip.

50ASX2 modules are normally not sold to diyers, but you can find sometime them on Ebay. There is also a FS thread on diyaudio :

FS: ICEpower 50ASX2, 500A, 250A modules

I'm planning in a few month to build a 4 channel amp with this modules.
For now i have to finish integration of my Najda DSP card.

You may need a input stage for those amp, as shown in this thread, pictures are from icePower 50ASX2 Designer manual document.

ICEpower 50ASX2 Build.


best regards,
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Old 3rd October 2013, 03:57 PM   #4
xrk971 is offline xrk971  United States
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I second the TPA3116D2 amp module. $17 for 50w/ch. Also available is the TAS5630 which has a 4 ch version at up to 150 w/ch.
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Old 8th October 2013, 07:25 AM   #5
jakja83 is offline jakja83  Norway
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What about these?

Ice Power 50ASX2 Power Amplifier Bang Olufsen 50 ASX2 | eBay

Are these "the real deal", original B&O modules?

I am new to this so is it correct that I only need a case and wiring to make these sing? Not any more boards or SMPS, all the electronics sit on this board?

You can feed them 230V AC directly from the outlet?

Last edited by jakja83; 8th October 2013 at 07:50 AM.
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Old 8th October 2013, 11:55 AM   #6
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Hi,

As said in this thread and in the Icepower50ASX2 designer manual, you may need an input buffer :

http://www.diyaudio.com/forums/class...sx2-build.html
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Old 8th October 2013, 04:05 PM   #7
jakja83 is offline jakja83  Norway
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Ok. I see their power is only 2 x 25 watts into 8 ohms, 125ASX2 is perhaps a better choice, though costing more that twice the power.
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Old 11th October 2013, 05:27 AM   #8
jakja83 is offline jakja83  Norway
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Quote:
Originally Posted by Pascal GUERIN View Post
Hi,

As said in this thread and in the Icepower50ASX2 designer manual, you may need an input buffer :

http://www.diyaudio.com/forums/class...sx2-build.html
Well, me being an amateur: What is the purpose of it, and how to construct it? What will happen if you don't have one?
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Old 11th October 2013, 07:52 AM   #9
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HI?

If you are planning to build a amp with 50ASX2 modules, you should read this doc. Send me your email in PM if you dont find it via a Google search or on B&O site :

ICEpower ? Class D audio amplifiers ? Consumer & Professional Audio

Docs are in the download section.
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Old 11th October 2013, 08:09 AM   #10
jakja83 is offline jakja83  Norway
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Quote:
Originally Posted by Pascal GUERIN View Post
HI?

If you are planning to build a amp with 50ASX2 modules, you should read this doc. Send me your email in PM if you dont find it via a Google search or on B&O site :

ICEpower ? Class D audio amplifiers ? Consumer & Professional Audio

Docs are in the download section.
I am considering both 125asx2 and 50asx2, but want best SQ available.

The first document in your prior post is a dead link. I will try to find it.

Last edited by jakja83; 11th October 2013 at 08:22 AM.
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