|8th January 2010, 06:37 PM||#1|
Join Date: Feb 2009
First timer build - Advice
Well i got my stereo 3886 kit.
For a case im using a 5x5x8" cast alum painted case. It should be enough surface area if i mount 1 chip on each side
For a tor transformer im using parts out of a gutted subwoofer plate amp that was rated at 600watts with a 3amp fuse. 22-0-22vac. PS its using a 10ohm thermistor for inrush, should i leave it in?
Im using either a 25k (left over) or 50(rk47) pot. Should i leave R2 in or adjust it for either pot?
For the feedback cap. I shouldnt need it if i have no dc off set, so i should i install it as in the feedback cap setup, and then jumper it to the inner pad? This way if i need the feedback all i need to do is remove the solder jumper to the inner pad.
for a source im using a diy usb dac with a high output (2vrms or 5.66pp) So im going to have to adjust the gain.
Does all of this look good for a setup for either 8ohm bookshelfs or 4ohm towers at med to low volume?
I kinda wanted some advise before i did a mouser run. I run the smt lab at work and have built 3 headphone amps and 3 dacs so far, this will be my 1st adventure above 1 watt
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