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Class D Amp Module Replacement

Ocean_Fan

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Joined
May 30, 2024
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Hi all,
I have a Bel Canto S300 with one module that is out of commission.
I was going to try a warranty fix but then I see how simple the replacement would be to do myself.

hero_ampopen.jpg

My 1st thought was to replace both modules with new ones from parts-express.
This is the closest match I could find:
326-208_ALT_1.jpg

but while I'm at it I got to thinking.
This AMP is really really a simple design. It looks like this expensive purchase is just 2 off the shelf modules slapped in a box with some inputs and outputs. Wondering why I spent so much on it actually :)

Anyhow, is there a reason I should do a like for like replacement rather than have some fun and purchase some newer up-to-date (potentially higher power output) modules and put those in this box? My experience with this kind of stuff is zero though I have built many computers myself... this looks like a similar challenge.

When I look at images of the insides of this box, it looks like all the "action" is from the modules.

  • 2 class D modules (replace these - like for like or try something new)
  • 1 LED lamp on front
  • 2 input boards on back
  • 2x power connector cables
  • 2x L&R outputs

Anyone have any thoughts on this?
 
I would replace them with an Edge module if you like to stay to icePower and it's really simple built.
The ones used are ancient consider the new ones.
Just get a 1200as2 and slap it in.

Edit:I saw the size of the case,1200as2 won't fit and considering the small heat dissipation area it's a bad idea after all.
 
Last edited:
I would replace them with an Edge module if you like to stay to icePower and it's really simple built.
The ones used are ancient consider the new ones.
Just get a 1200as2 and slap it in.

Edit:I saw the size of the case,1200as2 won't fit and considering the small heat dissipation area it's a bad idea after all.
ahh... well that's too bad but I like the line of thinking.

The case is all metal.: I could drill some holes on the back and on the bottom to allow air to rise through the box and exit the back for a bit of passive airflow cooling.

Is there a wattage total for the box that you'd draw a line at for passive cooling?
 
ahh... well that's too bad but I like the line of thinking.

The case is all metal.: I could drill some holes on the back and on the bottom to allow air to rise through the box and exit the back for a bit of passive airflow cooling.

Is there a wattage total for the box that you'd draw a line at for passive cooling?

Thing is that 1200as2 is 300 x 100mm so out of the question,both size and high power (which comes with bigger demands about thermals )
The smaller 700as2 does not have the Edge chip and the smaller ones who does have it need a separate PSU.

Maybe have a look at the TI3255 builds?There's various threads about it and it's also simple to built.

Here's a good read about thermals and how to calculate it.

 
Thing is that 1200as2 is 300 x 100mm so out of the question,both size and high power (which comes with bigger demands about thermals )
The smaller 700as2 does not have the Edge chip and the smaller ones who does have it need a separate PSU.

Maybe have a look at the TI3255 builds?There's various threads about it and it's also simple to built.

Here's a good read about thermals and how to calculate it.

fantastic, thank you!
 
Hi all,
I have a Bel Canto S300 with one module that is out of commission.
I was going to try a warranty fix but then I see how simple the replacement would be to do myself.

hero_ampopen.jpg

My 1st thought was to replace both modules with new ones from parts-express.
This is the closest match I could find:
326-208_ALT_1.jpg

but while I'm at it I got to thinking.
This AMP is really really a simple design. It looks like this expensive purchase is just 2 off the shelf modules slapped in a box with some inputs and outputs. Wondering why I spent so much on it actually :)

Anyhow, is there a reason I should do a like for like replacement rather than have some fun and purchase some newer up-to-date (potentially higher power output) modules and put those in this box? My experience with this kind of stuff is zero though I have built many computers myself... this looks like a similar challenge.

When I look at images of the insides of this box, it looks like all the "action" is from the modules.

  • 2 class D modules (replace these - like for like or try something new)
  • 1 LED lamp on front
  • 2 input boards on back
  • 2x power connector cables
  • 2x L&R outputs

Anyone have any thoughts on this?
If a warranty repair is possible, then you should do it.
The manufacturer will probably use current modules as replacements.

Nobody will stop you from starting your own project and you won't lose as much money.
 
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