Left and right subwoofers with integrated

@noble100
Tim,As below, I have been assured that the low pass filter will always be functional regardless of which way I go."On our subwoofers, running the RCA into the LFE port doesn't disable the ability to use the Low Pass Filtering Functionality. Actually running to any of our subwoofer's ports doesn't disable the ability to use LPF.
So, feel free to just plug one RCA into the LFE port of each subwoofer and back to the pre-outs of your integrated amplifier. Then just adjust the LPF accordingly."

Hello Tony,

    That's okay but you still have the issue about whether 50 Hz is going to be the optimum crossover setting for your main speakers.  I tend to think the optimum crossover freq would be closer to 40 Hz but you should check it out and make up your own mind.  If 50 Hz is not low enough , I'd ask SVS why the heck did they make a sub with a rated bass extension down to 20 Hz and limit the crossover to 50 Hz. 
     Then listen to their lame excuse and buy a Mini DSP to rectify their mistake and solve your issue.

Later,
Tim

I appreciate your commitment to my possible problem, but I think I will try 50Khz first and unless it is obviously problematic I will invest my time in subwoofer placement and room treatment.

Hello Tony,

Sounds good. I know from fairly extensive experience setting up my own and other systems with dual subs, that precise positioning of sub#1 and then sub#2 in relation to your designated listening seat are the key factors in achieving best results. I suggest taking your time to ensure accuracy and using the sub crawl method if you lack the more expensive room correction gear alternative. Assuming you don’t currently have the room correction gear, here’s the sub crawl procedure:

1. Hookup sub#1, place it directly in front of your designated listening seat and play some music with good and repetitive bass. Set the Volume level on each sub to 50%, the Phase to in-phase ("0") and the Crossover Frequency to 50 Hz.
2. Beginning at the right front corner of your room, slowly walk in a counter-clockwise direction around the perimeter of your room closely listening for an exact spot where the bass sounds best to you (powerful, solid, smooth, detailed, dynamic and natural). Remember to take your time, move slowly, listen closely and repeat from the beginning until you find the exact spot.
3. Once you’ve found the exact spot, move sub#1 to this specific spot.
4. Hookup sub#2, place it directly in front of your designated listening seat and play some music with good and repetitive bass again.
5. Beginning at sub#1, slowly continue walking in a counter-clockwise direction around the perimeter of your room closely listening for the next exact spot where the bass sounds best to you (powerful, solid, smooth, detailed, dynamic and natural). Remember to take your time, move slowly, listen closely and repeat this step from the beginning until you find the exact spot.
6. Once you’ve found the exact spot, move sub#2 to this specific spot.
7. Sit in your designated listening seat, play the music with good and repetitive bass again and verify the bass sounds very good to you overall.

     If the bass does not sound very good to you, unfortunately, you’ll need to repeat the above complete procedure.
     If the bass does sound very good to you, the normal next steps are to optimally set, or fine tune, the Volume, Crossover Frequency (Low Pass Filter) and Phase controls on each sub. Since you’re going to set the Crossover Frequency at its lowest available 50 Hz setting, you’ll just need to optimally set the volume and phase controls.

Later,
Tim

@noble100

Thanks Tim.I am busy for a few days, followed by a 4 day golf holiday at Predator Ridge in Vernon, BC, so the crawling will have to wait for now.It sounds good in theory, but in a 700 sq ft condo there is not a lot of actual spots to put two subs. Hopefully the stars will align and I don't end up with one sub in a door way and the other next to me on the couch.