BPA-200 from BGT LM4780 kit?

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maxw

maxw

Member
Joined 2004
PierreG said:
Good work. It is a very intresting project. I saw you web page on this amp.
How is the sound?
Did you compare with another amplifier?

What is the temp of your heatsink?
Can you let your hand on it for a long time?
I think you should, they seem large enough.
Click to expand...

I haven't compared it to another amp yet.
The heatsink doesn't even get warm with 30 mins of music but I'm not really thrashing it, neighbours etc. I think the heatsink is plenty big enough ;)


kestrel200 said:
MAXW,

Where did you get the 134 pcb?? Do you know where I might be able to find one? Also what size are your heatsinks?

Thx

Mike
Click to expand...

That is one of digi01's PCBs.
See here:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=42834
You can contact him for PCBs ;)
The heatsink is roughly 60x70x300mm.
 
B

Bratislav

Member
Joined 2003
ESP simplest ever bridging

bikehorn said:
i was actually about to post a similar thread because i'd like to build a BPA200 as well. however, instead of using the balanced line driver, i wanted to use this bridging method:

http://sound.westhost.com/project20.htm

is there any reason this wouldn't work?
Click to expand...

I think it is a fantastic idea. Can't see any reason why it shouldn't work, really. The only thing I don't quite like is a small delay you have between two phases (as second amp must "wait" for a signal to appear on the output of the top amp before producing its own half which then gets delayed again by it, kind of inbuilt TIM), but I'm not really sure how significant this is in real life. For a subwoofer amp for example this is absolutely a non-issue. In fact I may try it for my forthoming S-L Thor variant !

Bratislav
 
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