For those of you mixing the wires with LoZ (balanced - XLR usually) on one end and 1/4" or RCA on the other (MOST 1/4" are unbal, tho you can wire them bal if your equip can take it), there's a neat little gadget on the market by a company called ebtech/Morley that comes in a 19" rackmount configuration called a "Line Level -> Shifter."
The LLS-8 has 8 1/4" bal or unbal pairs, one side is -10db (consumer/prosumer line level) and the other side is +4db (pro). You just put this little sucker in the middle of your wire run (passive, does not require power), and it will convert your -10db in to +4db out OR you can go the other way and go +4db in to -10db out, if (for example) you're using a hi powered but consumer hi-fi amp.
If you're using a pro level amp, this will boost the signal, and remove a LOT of the noise caused by trying to "boost" low level by just turning the volume up.
If you have problems with line noise (60 cycle hum, for example) ebtech makes a "4x4" model which does the Line level shifting on 4 pairs (channels), and ground lift/hum eliminator on the other four pair.
It's a great little item to have in your rig. You can finally and easily get your input signals from your RTR, cassette deck or sound card up to pro level for your Crown, etc.
I'm a pro musician for a living, and I have a Crown 402 in my office rack, running into a couple of Samson Expeditions, and the sound is amazing! I also have another rack in my studio with a QSC 2500 for running my three way speakers (18"/9"/4" ferro fluid), and in my road rack I use a QSC 3602
Power:
775 watts stereo at 8 ohms
1250 watts stereo at 4 ohms
1800 watts stereo at 2 ohms
2600 watts bridged to mono at 8 ohms
3600 watts bridged to mono at 4 ohms
.. and it weighs a back breaking 21#. They also have an 1802 model (half the power) that weighs less then 20#..
My "receiver" that I use to drive 7.1 using a Klipsch 12" 600W powered sub is a Sony STR-DA7100ES, which puts out an "alleged" 170W x 6 ch. I have one of those in my studio and in my home theatre living room, where I use:
Front: two Cerwin Vega D7
Center: JBL LC2 (4way)
Side and Rear Surr (mounted in position, but flush in ceiling) Jamo 10.5K4 (200w, 4way, 10")
Sub: JBL MP418SP, which is an 18" pro sub w/built in Crown amp
For wiring the "in ceiling" Jamo's, I found a DEAL online, CL2/CL3 12 ga in-wall rated at Parts Express for $129/1M' spool (damn thing is heavy!).
Oops, wandered ot, sorry.
Rick