Today, I recieved 2 SVS PB-12 Plus subs, they are installed, moved the around a bunch, tried a bunch of different x-over points on my pre-amp for them, and took a bunch of measurements via REW.
Here is what appears to be my best graph and it also sounded pretty sweet from my primary listening position. I'm new at this, but I presume that using a RS digital SPL meter means I'm getting a good house curve db rolloff from 15hz to 100hz. The graph also includes my mains as well, which are B&W Nautilus 802's that have a crossover point of 60hz and my subs are at 70hz.
What do you guys think? I also get in a BFD 1100 today but not sure if I should play with this or not. My room is about 4800 cubic feet.
Any response inadequacies in the type of meter or mic used with REW is compensated by the meter/mic calibration file used. The calibration file renders the meter/mic flat.
B&W Nautilus 802's that have a crossover point of 60hz and my subs are at 70hz.
Using a different crossover between the sub and mains is not generally a good idea. I presume you accomplished this by using the subs own LPF or an external crossover. You do have a small peak around the crossover(s) area that could be removed with a BFD, but the response is so good I'd be inclined to try and smooth it out with positioning and phase controls.
brucek
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