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Class D Switching Power Amplifiers and Power D/A conversion

2x100W TPA3116D2 (2 chips, each in PBTL)
2x100W TPA3116D2 (2 chips, each in PBTL)
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Old 2nd July 2015, 06:28 PM   #1
tonyfg is offline tonyfg  Portugal
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Default 2x100W TPA3116D2 (2 chips, each in PBTL)

Hi guys,

Among all the TPA3116D2 hype I've seen many single-chip stereo and mono boards (2x50W or 1x100W) as well as dual-chip 2.1 boards (2x50W + 1x100W).

I don't really need a sub but I'd like to have some extra power for peaks, especially when driving 8ohm speakers. What do you guys think about this board?

2 100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V 24V for Arduino | eBay

Does it look like I can get decent quality or would it be more advisable to get one of the well known boards in the wiki?


Thanks!
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Old 2nd July 2015, 10:06 PM   #2
den_hr is offline den_hr  Croatia
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Well, I pulled the trigger on one, so I'll be able to tell you in about 3-4 weeks
Looks interesting, it's not expensive, so even if it turns out to be a "meh" value, it's no great loss... we'll see...
Thanks for the heads-up
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Old 2nd July 2015, 10:31 PM   #3
tonyfg is offline tonyfg  Portugal
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Yeah, I couldn't help myself and ordered one too. For the price it's not a big deal if it ends up sucking.

I found that the ebay seller has an online store that looks kind of sketchy but has even better prices... I found this for around $5:

2*100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V-24V for Arduino

The title and description are the same as on ebay, but the pictures are not of a TPA3116D2 amp.
I don't know what to make of it. I wonder which is wrong, pictures or description?

I'm just going to leave the link here in case anyone wants to take the chance
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Old 3rd July 2015, 11:57 AM   #4
Lo_Tse is offline Lo_Tse  Canada
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Quote:
Originally Posted by tonyfg View Post
Hi guys,

Among all the TPA3116D2 hype I've seen many single-chip stereo and mono boards (2x50W or 1x100W) as well as dual-chip 2.1 boards (2x50W + 1x100W).

I don't really need a sub but I'd like to have some extra power for peaks, especially when driving 8ohm speakers. What do you guys think about this board?

2 100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V 24V for Arduino | eBay

Does it look like I can get decent quality or would it be more advisable to get one of the well known boards in the wiki?


Thanks!
Wow, it is crazily cheap. Even cheaper than the regular stereo board with one chip!!!
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Old 3rd July 2015, 03:02 PM   #5
doctormord is offline doctormord  Germany
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Lets see if they ship the right board, ordered one.

The same seller is also on AliExpress, board is a bit more expensive there:

Aliexpress.com : Buy 2*100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V 24V from Reliable Other Consumer Electronics suppliers on uctronics | Alibaba Group

Would guess, they're shipping this one:

http://de.aliexpress.com/item/TDA729...370072928.html

Last edited by doctormord; 3rd July 2015 at 03:17 PM.
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Old 3rd July 2015, 04:05 PM   #6
Bare is offline Bare  Canada
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Interesting.. proof will be in the hearing
Best to Quickly upgrade those 'Ping Pong' brand capacitors.. at least
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Old 3rd July 2015, 04:41 PM   #7
tonyfg is offline tonyfg  Portugal
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Quote:
Originally Posted by Bare View Post
Interesting.. proof will be in the hearing
Best to Quickly upgrade those 'Ping Pong' brand capacitors.. at least
Very true! If it comes to pass that the boards themselves aren't rubbish or fake we can see if the usual tweaks apply to the PBTL configuration
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Old 3rd July 2015, 05:36 PM   #8
doctormord is offline doctormord  Germany
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Because why?
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Old 3rd July 2015, 05:41 PM   #9
tonyfg is offline tonyfg  Portugal
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Originally Posted by doctormord View Post
Because why?
If some of the cheap components affect SQ it should be trivial to improve these boards without spending much. We'll need to find someone with measuring equipment to see if it's worthwhile of course.

It could be that they already sound amazing without any modification. That would be crazy good value! Let's wait and see...
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Old 4th July 2015, 03:39 PM   #10
lithoc is offline lithoc  Malaysia
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Quote:
Originally Posted by tonyfg View Post
I don't really need a sub but I'd like to have some extra power for peaks, especially when driving 8ohm speakers. What do you guys think about this board?
For 8ohm speakers , you can hardly gain any extra power. These PBTL amp works best with low impedance speakers less than 4ohm.
May be you can drive the amp at higher voltage to get extra wattts

Anyway, I'm too are curious about this board.
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