Somehow, I missed this post. I am interested but have several questions after re-reading this thread and parts of a couple others.
Danny, are these chassis' still available?
Yes. I have a lot of them.
I'm guessing that they are best used as mono so need 2 for a Stereo?
For me it is worth the extra money to make mono-blocks out of them just to keep speaker cable lengths shorter. I can spend more on longer speaker cables than it cost to build another amp (almost). Plus the amps can be two channel amps for bi-amping or different sized coupling caps can be used to vary the low end roll off. So you can have a full range channel and a channel with a -3db at whatever you want it to be.
I read a lot about different values for the different parts. How do you determine which values will best suit your system?
Are you referring to input coupling caps? If so the value depends on how much you want to roll off the bottom end.
And spend the money of good RCA connectors, tube connectors and wire. It can really make a difference. And I stock most of that.
Is the value dependent on your speakers, your preamp, or a combination of the 2?
The input impedance of the amp and your target roll off determines the value. For this amp I think it is 25k ohms.
So a .022uF value will be -3db down at 289Hz.
A .033uF value will be -3db down at 192Hz.
A .047uF value will be -3db down at 135Hz.
A .068uF value will be -3db down at 93Hz.
A .1uF value will be -3db down at 63Hz.
A .22uF value will be -3db down at 29Hz.
A .33uF value will be -3db down at 19Hz.
A .47uF value will be -3db down at 13.5Hz.
A 1.0uF value will be -3db down at 6Hz.
What other factors should be considered?
Just a target roll off.
Any final conclusion on battery vs AC SQ? (I am interested in AC - any way to maximize? I have an UberBUSS)
I've gone back and forth quite a bit and in my system the battery sounds better. And with the power supply I used really good cables, an Uber Buss, and a Dodd Audio balanced power supply. I still preferred the battery. However, not all batteries are the same. Mine is a 100 amp hour Power Sonic.
Would there be any way a single one would sound good on the Super V's and the LS6's? (at a lower volume).
The LS-6's are going to like more power, but they will drive the Super-V's easily to good levels.
I would probably want to have the option of limiting the output of the low frequency via the input coupling cap.
Piece of cake. See above. The limiting of current demand from it will give it a little more head room too.