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about 50watt amplifier

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arcom

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I think that TDA1514 from Philips has an output of 48W into 8 ohm load.
When I built this amplifier (two of them, actually), its sound was horrible. After a few experiments, I removed the bootstrap components and it worked like a charm :D

I've also built an amp using TDA7294 for a friend of mine. This IC rocks! And it's HOT. I mean...really really HOT. Adequate heatsink required. Preferably with a fan (thermally controlled). Although this IC has protections against overload, short-circuit, excessive temperature, etc. I still managed to blow up two of them :(
 

Exo

Active Member
arcom said:
I've also built an amp using TDA7294 for a friend of mine. This IC rocks! And it's HOT. I mean...really really HOT. Adequate heatsink required. Preferably with a fan (thermally controlled
Indeed, but with a +/- 45V supply you can get up too 100Watt with it.
Got 4 of 'em running here like that.

4 x 100W on a 10 x 6cm pcb... :)
 

arcom

New Member
I used the same supply voltage (1V more or less).

4 x 100W on a 10 x 6cm pcb...
Talk about making things small :)

My PCB was approx 20 x 13 cm. It had 2 x 100W amps, stereo preamp with DC tone control and channel selector and two thermal sensors for fan control. I was soo happy when I built it and it worked. Hopefully it is still working :?

EDIT: Now I remebered that it also contained the power supply (on the same PCB)
 

ukeee

New Member
If your interested in building a discrete amplifier this report might be of some use, it includes a design for a 50w bipolar amplifier. I've built it and know that it works.
 

ukeee

New Member
If your interested in building a discrete amplifier this report might be of some use, it includes a design for a 50w bipolar amplifier. I've built it and know that it works.

Edit>> Sorry I think it might have been o big for the message board, i've put it on my webspace http://www.alpineglow.co.uk/amp.pdf
 
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