speakers and cables

@grislybutter Yes, confusing. 

Normal sub cutoff is 60-100 hertz, your mains go down to 40, and the lowest your subs can cut is 80, maybe try 100? There maybe a variable lowpass XO out there for you, that way you can dial it in. 

One sub can work just fine, usually you add another to balance it out, and fill in the bass holes one sub can create. A lot of that can be cured with sub placement. I have found with 2 subs, that you can great bass, but it can easily overpower the mains, becoming the focal point. 

This entire setup is starting to feel like a compromise. As nothing is really working with each other. This has me thinking, does your amp, have a speaker A/B switch? Not sure why no one talked about it. You can just wire the subs to the B connections, then put the low pass filters on the A speaker, both with will get full power.

@mswale it is a compromise (mainly for the simple reason I had to swear to my wife many times I am done spending money on audio), and 2 steps back 2(3) steps forward process. 

This has me thinking, does your amp, have a speaker A/B switch? 

No, but one of my ideas was to get a speaker switch. I am interested in this low cost low pass solution, as it should fix the overlap.

I don’t mind adding a low pass filter and reconnecting my subs.

A high pass filter would actually simplify your subwoofer connection. Speakers would be. You’d need one extra pair of RCA interconnects to go from your preamp into your high pass and then RCAs from low pass to amp. Since you were able to try ’Y’ connectors out of your preamp, I assume you already have enough RCA to reach your subs. But remember, and not to start controversy, the quality of (RCA) interconnect cable (particularly to & from the low pass filter, imo) will make a difference.

I am interested in this low cost low pass solution, as it should fix the overlap.

Not only should this clean up a bit at where your subs and mains overlap, now your amp will be freed up not to be driving the low frequencies from your main speakers. There are pros and cons, but overall I think you may really like a HP filter in your system.

@mswale

to clarify, the link what you sent is a low pass filter. What I need for my mains is a high pass filter?

high pass

Assuming you’re a 2 channel guy, get a Wiim Pro Plus streamer (200 dollars) or Wiim pro (150 dollars) streamer...Word on the street is that it’s newer firmware lets you do cleaner bass management (digital domain) and many other good things.

WIIM Streamer Updates