JL Audio sub users

I'm running my B&W 800's fullrange while using a F-113 crossed over around 47 hz. It's really easy to tweak this sub to integrate with a two-channel system, even without an active crossover rolling off your main speakers.

I had two jl 113's running with Merlins and Sophias. I found the bass was much stronger when the speakers were in the limited mode. It was set up as a master slave.

I just got some andra II's and now I think its sounding better with the andras running full range, which surprised me.

Wehn i had the sophias running full range with the 2 113's it sounded very wimpy and my stereo installer was not impressed at all. When we changed it to limited it was a huge boost in bass.

It does take a lot of messing with settings to get things right, which is not my forte!

Excellent advice Bob. But where in the chain is the best spot to add the x-over.

Mpit, you use a processor though don't you, not a two-channel pre? Concensus agrees with you that it can take a lot of tweaking, not my forte either!

Slightly different reasoning:

If you don't want to tweak the night away, run the mains in "limited" (I assume this means 100hz x-over) and insert an automatic room EQ (like the SVS/Audyssey box) between the pre/pro and the subs. By crossing at 100hz, the Audyssey will room correct up to that frequency - which is where your room causes the most trouble anyway. It will also set level automatically. There will be no additional circuitry between your pre and your main speakers above 100hz, where you might actually hear it.

Marty

Caveat: I use the Velodyne SMS-1 for this task (it's more flexible than the SVS and sounds great), but it requires a lot of tweaking for best results. I haven't heard the SVS/Audyssey unit which performs the same EQ automatically. However, KR, who reviews at Stereophile and ocassionally posts here, has compared the Velo with the Audyssey and prefers the latter, hence my recommendation of the SVS/Audyssey. Since you evidently have the x-over in your pre/pro, you don't need the Velo's internal crossover, which would be another reason to opt for it over the SVS.