Thank you Smoky for those links, as for power matching(it just mean getting trannies with close tolerances to each others specs?)..... i'm young leave me alone
![Banging Head |O](https://www.eevblog.com/forum/Smileys/default/bangheadonwall.gif.pagespeed.ce.8iLbFYV4Bc.gif)
. Thank you for telling that to me though as my later projects include a preamp with 4 way x-over and 3 stereo (Small wattage 50-100W) class A amps to run some tweeters and high/low Mids(The beast has a home running 2 12 subs rated for at least 500 watts each). Ill have to keep my eye open for that book as it seems to intrigue me. There's only a few types of books I actually read and that looks perfect... novels is not one of them unless they get really geeky.
To be honest about mosfets(I can see your problem with spell check ).... there cool, which requires a smaller heatsink (or the ability to add more
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/xsmiley.gif.pagespeed.ic.R8GFI-pF6f.png)
) they even have (sometimes) easier drive circuits., but I don't like them for all-range amps. There either on or off, nowhere in between. I honestly don't think they can truly capture the full potential of the highs.
BUTfor subwoofer amps... that's a whole different ball game.
When choosing this project it really baffled me what to do. Old school and tubes or new school solid state... but then which one bi's or fets.
Anyhow if this interests you keep up with my blogger account. I try and keep it updated. I even got some 8 AWG wire for my DC feed.
Amp Specs
10 trannies per side (Comp pair(5NPN,5PNP))
Dual channel (Left and right or if your crazy enough bridged)
1000W, Note I have brought up the voltage (+/- 10 V) so a new measurement will have to be taken.
Total (Calculated) Voltage- +/- 80V, thats a total of 160V!!!
Total (Calculated) current to spk: 12.8 AMPS
1.5 kVa Hammond pre-made transformer (182T60), (
http://www.hammondmfg.com/182.htm)
3*22,000uF caps per side. (6 in total- 36DY series from Vishay)
Total of 20 output transistors. NPN-PNP
220/110VAC support. (I will be using 110)
Homemade Heatsink (with a Fan?).
Auto-On circuit with soft start pwr supply.
12VDC standby.