I have questions on what is the best way to hook up
a sub in my case.
I have a Marantz SR4600 AVR and an E-MU PS12 sub.
The receiver has 8 pre-outs (L, R, SL, SR, C, SBL, SBR, LFE).
The sub has 2 unbalanced RCA inputs and 2 balanced Neutrik inputs.
The receiver also has a (most likely digital) crossover,
I can't find any details on it (filter type, etc.), though.
I'm wondering what is the best way:
***1. To use LFE pre-out on the SR4600 into PS12's stereo RCAs
with Y adapter. This is without Multi-channel Stereo mode engaged.
This would theoretically the best way, since the only LP and HP
filters used here are the SR4600's ones.
***2. To use SL and SR pre-outs (with SMALL option selected
for mains L/R and LARGE for SL/SR, so full signal is sent there)
on the SR4600 plugged into PS12's stereo RCAs,
obviously without Y adapter. With Multi-channel Stereo mode engaged,
so that L/R signal is duplicated on SL/SR.
But since the full signal is sent to the PS12, its own LP filter
(48dB/Oct Butterworth) has to be engaged.
This in turn makes it potentially harder to tune in,
since I don't know SR4600's HP filter slope and it is probably
less aggressive, causing a bump or dip somewhere.
It will also require manual tuning of the PS12's LP filter.
***3. Ditto, but with Y adapter in the SR4600 SL/SR pre-outs
plugged into either L or R input of the PS12.
I have it currently connected as in 2. The only problem
I'm having is the PS12's auto-on is "lazy" and I
have to bump the preout volume to -30dB/-25db region to wake it up.
It also has the tendency to go into sleep, while listening.
Also, I find it impossible to seamlessly integrate the PS12's
SPL with the mains (Behringer B2031P's). It sounds fantastic,
but there is always room for improvement.
The sub is simply too quiet. But, I can't understand why.
Even bumping SL/SR pre-outs in the menu to +10dB(!)
doesn't help it too much.
Having OCD makes me also go paranoid on the signal quality
distortion induced by using Y adapter. Mainly because it is one
of those: http://media.digikey.com/photos/Pomo...hotos/6882.JPG
So it is unknown to me what is inside, whether it is shielded, etc.
I know it's the LF region but still, you want your equipment to
sound as good as possible.
What is your opinion?