Originally Posted by thyname
OK, time for an update, as I had a chance to set up my new SVS SB12 sub last night.
So far happy, although I expected a bit more from it.
First, SB12 did not show up on their Merlin program. Here is what I have:
Speakers: ELAC Uni-fi UB5 bookshelves
Amp: Rotel RSX-1065. This is a surround sound receiver but using as 2-channel only. Rotel setup with speakers as "small" and crossover at 80 Hz.
Below is the manual for the Rotel:
I hooked up the SB12 with subwoofer cable from Sub Out on Rotel to Line In Right (LFE) on SVS SB12
Phase on Zero. Low pass filter set on max (disable). Gain at 12 o'clock
Am I doing it right?
I do notice the added oomph with the sub, but not on all tracks, and with higher volume levels. I guess my speakers had good enough bass when set as "large" by themselves.
If you have any suggestions on my hookup or otherwise, do not hesitate to "shoot"!
I have a couple of suggestions to make. First, with only a 5.25" woofer, those bookshelf speakers could probably use a little higher crossover. The fact that your Rotel set an 80Hz crossover is also indicative of that, because they apparently aren't getting much boundary gain from their current location. So, try going up to at least 100Hz, and see how things sound.
Second, when an AVR runs an automated calibration routine, the goal is to set all channels in an audio/HT system to the same level, as measured at the MLP. Typically, a 75db test tone is used. But, we don't actually hear low frequencies as well as we do the frequencies played by the other channels, so it is normally necessary to boost the subwoofer volume a bit, post-calibration. If you haven't already done that, I would try it now.
Without knowing what your trim level is in the AVR for your sub, it is difficult to advise you, but to be on the safe side, I would just add 1 click to the sub gain, and if that isn't quite enough, I would add a second one. That combination of higher crossover, and increased sub gain, should give you more of what you are looking for. And, if necessary, you can always come back to an 80hz crossover, if you have localization issues, or think that things sound better that way. But, I'm guessing that, in this case, a little higher crossover will work better.