Interested in building 200w SS amp - guidance?

[iH8usrnames]

Just increase R103 fan resistor from 1.5k to 3 k. If the heat sink starts to overheat the sensor will run it full speed anyway. Not likely at 1 w average in a living room.

Thanks. I was looking at that board last night but had not looked to deeply. I installed another fan I already had on hand. It is slightly quieter but still slightly annoying when listening at quieter levels.

I was thinking about applying a bit of dynamat to a few areas of sheet metal inside the amp and see what that does. I believe the source is more mechanical noise than air.

Increasing the resistor will get done before snow flies and I start listening for a few hours a day.

Or put the amp behind the couch, with longer speaker wires. I use 10 ga 2SO cord from mcmaster.com, the highs sound better than 16 ga on top octave solo piano if you still have your high freq hearing.

This is only powering subs, no concerns about highs for this application.
I am feeding each sub via 20' of 12g copper. I have the long runs so I can experiment with sub placement.

You ought to be able to turn the gain down on the X to match your other unit. there is a pot on the back for input volume. Often worn out in used units. I replaced the 2.2 uf input coupler cap too, on my S.
I'm running 120 W/ch PV4 on 13 W max drivers in my TV room. Excess power is not a problem if you don't turn the volume up too high.

I just checked, no trim pot on rear. My only adjustment are gain on front, which is currently set to max.

I'm using a NAD C658 DAC/preamp; it has DIRAC built in, which was my primary reason for buying it.

Initially I thought I would need to turn down gain on the Peavey when, in actuality, I had to turn down the output to the VTA ST-120 amp powering my L&R speakers. This was done during DIRAC calibration where adjusting output to each speaker to match.

Honestly, I'm just griping to gripe. Not sure why it bugs me but it does.

Now that I have WAY more power than I require I have to wonder, what is the most inefficient subwoofer I could build? Not that I intend to, just as a mental exercise.

My current drivers are 90db 1w1m 4ohms.

Again, I have no plans to build new subs, totally satisfied.