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Chip Amps Amplifiers based on integrated circuits

Building a 200-channel amplifier
Building a 200-channel amplifier
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Old 28th August 2019, 02:52 AM   #1
smennen is offline smennen  United States
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Default Building a 200-channel amplifier

Hi all,

Wondering if anyone here has advice on building a 200x1 amp.

200 channels, one watt each.

This is for an ambisonic-type array.

This is a letís-have-fun build, trying to keeps things sane and simple.

R
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Old 28th August 2019, 03:25 AM   #2
JMFahey is offline JMFahey  Argentina
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Do you have 200 different music/audio/voice programs running at the same time, each to a single amp+speaker or 1 program/source common to all?
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Old 28th August 2019, 05:31 AM   #3
chrisng is offline chrisng  United States
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How about TDA2030:

TDA2030A Audio Amplifier Module 6-12V Single Power Supply Electronic Components | eBay
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Old 28th August 2019, 06:37 AM   #4
tomchr is offline tomchr  Canada
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LME49600.

Tom
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Old 28th August 2019, 07:25 AM   #5
abraxalito is online now abraxalito  United Kingdom
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Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
PAM8403 might well give the cheapest solution : ??????? 2*3W PAM8403??? 2.5?5V?USB?? ????-???

100 of these costs 72RMB (just a whisker over $10).
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Old 28th August 2019, 09:57 AM   #6
00940 is online now 00940  Belgium
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I'd second the pam8403. It is not of the highest quality but it will simplify things a lot, especially when it comes to PS and heatsinking.

It's a mystery to me how you can get fully built modules with it for cheaper than its 2500+ price at reputable dealers.
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Old 28th August 2019, 10:25 AM   #7
chermann is offline chermann  Austria
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PAM8403DR-H Diodes Incorporated | Integrierte Schaltungen (ICs) | DigiKey


bare chip:

1 pcs. 0,72 Euro
500 pcs : 0,385 Euro
1000pcs : 0,308 Euro
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Old 28th August 2019, 10:36 AM   #8
Flo1K is offline Flo1K  Germany
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With this amount of single devices, I would go for a non class d solution.

Edit: Maybe: TPA6017A2

Last edited by Flo1K; 28th August 2019 at 11:02 AM.
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Old 28th August 2019, 10:41 AM   #9
smennen is offline smennen  United States
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Yes, there are 200 discrete audio channels, as fed by a custom-made 200-channel DSP engine. I’m helping the software engineer suss out the hardware side, but I myself know little about either.

There will actually be, all total, around 600 discrete channels / speakers. So I plan on building three of these 200-channel amps.

Can anyone provide a bit more detail about how these amps would be built?

Thank you!
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Old 28th August 2019, 10:53 AM   #10
chermann is offline chermann  Austria
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here you are...
PAM8406 (and PAM8403)
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