Upupa Epops said:
Problem is Mark's ones were running at 70deg or so once fully biased up - we need (as per what Stuart said - i believe that is a realistic figure) about 4c/w heatsinks for the drivers.... they should aparantly dissapate anything up to about 8w....
That's why. I had 280mV bias and mine sat @ 62deg. Once i double my bias it woudl be a little hotter again, which is really too hot - if it goes up by the same amount of ambient again, that's close to 100deg C!! That's a hot transistor.
At the end i expect my whole heatsink (drivers, etc) to all be running about 60deg... Hopefully no hotter, but i am trying to get rid of 300w of heat!
Aaron
Apart from myself and Mark, is anyone else interested in any of these boards if I was to put a production run together?
Gosh, where are you all coming from? 🙂
I'll let this run for the weekend, then have a tot up on Monday and get a quote.
I'll let this run for the weekend, then have a tot up on Monday and get a quote.
Pink, I haven't read through all the posts so don't know. I am curious if you are going single ended, or plan on doing balanced?
Just to be sure not to miss a good thing, I will be in for a stereo set also, Pinky🙂 Why do I love, to say that name😀 😀
Steen.🙂
Ps. Pinky, could you please post up the complete set of boards needed for this amp? I really did try to read through this mileage heavy thread, but fell asleep in the attempt😱
Steen.🙂
Ps. Pinky, could you please post up the complete set of boards needed for this amp? I really did try to read through this mileage heavy thread, but fell asleep in the attempt😱
depending on final results of the PCB's, availible partlists, schematics and PCB drawings and costs i am in too for a few boards.
I'm asking all : guys, why are you doing this construction at many PCBs ? Is easy and elegant to make it all at only one PCB ( including PS capacitors and rectifier ). By this solution ( if is it good designed ) are less problems with grounding, internal wiring of amp etc. Or is it for you too complicated ?