Morning all!
Since my stalled project to sync several class D boards for bi-amping is at the mercy of international delivery I've turned my attention to another project.
It is a stereo tri-amped active DSP system (2 x 4" mid [8ohm]/ 1" tweeter [4ohm] satelites & 2 x Tang Band 6.5" [4ohm] subwoofers - sealed) and I think I have found the board that will do the trick for it:
AIYIMA TPA3116 Amplifier Audio Board 5.1 Channel Digital Power Amplifier Board 50W*4 100W*2 DIY 5.1 Home Theater DC12 24V-in Amplifier from Consumer Electronics on AliExpress - 11.11_Double 11_Singles' Day
It looks quite tidy, the output inductors look fairly chunky and similar to Wurth counterparts which might indicate they have a similar saturation point of around 6A (744750420100 | Wurth 10 μH +-20% Ferrite Power Inductor, 6.2A Idc, 15.5mΩ Rdc WE-FAMI | RS Components). I will be using the balanced in connections via some better quality coupling caps from 3 x Sure ADAU1701 DSP boards.
The subs would be run from the two PBTL chips whereas the mids and tweeters will have chip each to share.
What do you guys think of it? I have ordered it just to see what it's like for now.
As far as PSU goes I was looking at this but have been told this is overkill:
SANPU SMPS 24V 500W DC LED Switching Power Supply 20A Constant Voltage Single Output 220V 230V AC/DC Transformer Driver Indoor-in Switching Power Supply from Home Improvement on AliExpress - 11.11_Double 11_Singles' Day
But I would prefer something sold in Europe that has to conform to our safety regs even tho it is a little under-powered. Could I use bulk caps to get round this?
MEAN WELL LRS-350-24 Switching Power Supply SMPS 24V 14.6A 350W - Audiophonics
This is not a big budget build otherwise I would have looked at other boards but finding balanced ins and multi-channel is difficult to begin with!

Since my stalled project to sync several class D boards for bi-amping is at the mercy of international delivery I've turned my attention to another project.
It is a stereo tri-amped active DSP system (2 x 4" mid [8ohm]/ 1" tweeter [4ohm] satelites & 2 x Tang Band 6.5" [4ohm] subwoofers - sealed) and I think I have found the board that will do the trick for it:
AIYIMA TPA3116 Amplifier Audio Board 5.1 Channel Digital Power Amplifier Board 50W*4 100W*2 DIY 5.1 Home Theater DC12 24V-in Amplifier from Consumer Electronics on AliExpress - 11.11_Double 11_Singles' Day
It looks quite tidy, the output inductors look fairly chunky and similar to Wurth counterparts which might indicate they have a similar saturation point of around 6A (744750420100 | Wurth 10 μH +-20% Ferrite Power Inductor, 6.2A Idc, 15.5mΩ Rdc WE-FAMI | RS Components). I will be using the balanced in connections via some better quality coupling caps from 3 x Sure ADAU1701 DSP boards.
The subs would be run from the two PBTL chips whereas the mids and tweeters will have chip each to share.
What do you guys think of it? I have ordered it just to see what it's like for now.
As far as PSU goes I was looking at this but have been told this is overkill:
SANPU SMPS 24V 500W DC LED Switching Power Supply 20A Constant Voltage Single Output 220V 230V AC/DC Transformer Driver Indoor-in Switching Power Supply from Home Improvement on AliExpress - 11.11_Double 11_Singles' Day
But I would prefer something sold in Europe that has to conform to our safety regs even tho it is a little under-powered. Could I use bulk caps to get round this?
MEAN WELL LRS-350-24 Switching Power Supply SMPS 24V 14.6A 350W - Audiophonics
This is not a big budget build otherwise I would have looked at other boards but finding balanced ins and multi-channel is difficult to begin with!
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