Not that much worse than running a pair of krell 750cx monoblocks
Preliminary parts pricing...
Haskris water chiller $4500. If you live in an area in the
country where it is legal to dump water down the sewer then
by all means hook the thing up to a garden hose, you need
about 3 gallons per minute. Better yet, hook the output up
to your garden sprinkler. The more you listen, the greener
your lawn...
182t60 hammond toroid transformers. 4 needed $640
(you can skimp with only 2)
15000uf/100 volt caps You need 24 $552
176 mj15003/mj15004 output transistors $704
(actually the newer mj21195/mj21196 are probably
much better and a little cheaper too) $352
4 burr-brown iso113 isolation bias amps $392
10 allegromicro hall sensors $150
4 x opa548
4 x mps8099
4 x mps 8599
16 x 2sc2705
16 x 2sa1145
4 x 2sa1156
4 x 2sc2752
8 x 2sc4793
8 x 2sa1837
2 x 2sc1815
2 x 2sa970 total less than $100
+/-15 power supply $50
+/-2.5 power supply $25
+5 power supply $40
Transistor sockets about $250
Power resistors about $100
Cpu's with flat pack proto, programmer etc $165
Chassis (now here is where the real work comes in) $???
Why that heatsink. I'm basically lazy. Do you have any
idea how long it takes to drill (accurately that is) holes
for 176 transistors sockets? That heat sink is from a spectra
physics 25 watt argon laser power supply. 1/4 inch thick
plated copper with .5 inch copper cooling tube already welded
to it. Sockets already mounted. 1/4 inch square copper buss
wires already mounted to ceramic standoff's...
If i had to do this from scratch, it would be 20 to 30 hours
of labor alone... And highly boring. And agrivating too after
a dozen broken drill bits.
