speakers and cables

I thought from your earlier posts you had a preamp output to your power amp, and could use a Y cable to split into outputs for amp and subs. 

@immatthewj I am sufficiently confused as I try to visualize it with my limited options but at least I am positive you know how it works on your end. My setup - if my Outlaw had worked I think it would be

Sorry, @grislybutter , for the confusion. Although I understand and respect that this is not an option you presently want to consider, I still feel compelled to do a better job of explaining it.

Okay, your L & R RCAs outs FROM preamp would go TO the L & R RCA ins in the high pass filter.

The high pass filter would have TWO PAIRS of RCA OUTs.

The high pass filter would send the full frequency signal to the subwoofer via the pair of RCAs designated subwoofer,

however, the high pass would only send an 80 hZ and up signal out of the pair of RCAs designated speakers, and these RCAs would connect to your amp. So if you think about it, now your amp is only reproducing 80 and up, and therefore your speakers are only trying to reproduce 80 and up.

Back at the sub, which is getting a full frequency signal from the high pass filter, the user would probably set the adjustment (and this would be the low pass filter that one would adjust on the sub) to 80 or 85 hZ to start with. So what one would be doing, in theory if it was a clean chop off of frequencies, is having the sub reproduce everything exactly under 80 hZ and having the speakers reproduce everything exactly above 80 hZ. In a perfect world, there would be no overlap between the sub and the speakers. (And also, even in a less than perfect world, both the amp and the speakers are now free of the work of trying to reproduce frequency below 80 hZ which should free them up to do a better job on the higher frequencies.)

But they tell me it is not a perfect world, and it is not a clean EXACT cut off at 80 hZ and therefore the adjustment at the sub (the low pass filter) needs to be played with and tweaked a bit, usually starting at around 85 hZ.

Hopefully I was able to clarify that & clear up any confusion I may have created.

However, much simpler, as @mitch2 just said, would be an RCA ’Y’ splitter at each RCA out of your preamp (L & R). From left one RCA would go to left RCA IN of your amp and also to the RAC IN of your left subwoofer/and then the same for the right.

@mashif my bad - I do have an out from my preamp. I call preamp out from integrated amps - but you are right. So yes, that’s a good suggestion

@immatthewj thanks for the clarification. It wasn't your fault, I am easily confused. Your explanations are always very thorough.

I am looking up Y splitters now on Amazon.

@immatthewj thanks for the clarification. It wasn't your fault, I am easily confused. Your explanations are always very thorough.

I am looking up Y splitters now on Amazon.

@grislybutter , I've actually used 'Y' splitters for something I was doing with my HT setup (way back in the days of Dolby Prologic when I had a HT set up) and I don't know why I didn't mention that before.  Something about 'Y' splitters from preamp seems intrinsically impure to me, but thinking about it, it cannot be as impure as "another crappy box" (with a pair of pots) and an extra pair of interconnects that were not there before.

And also, just out of curiosity I feel compelled to ask, did you try speaker wire out to sub and then out to speaker on both the left and right side?  (In other words, treating each sub/speaker as an extension of each other?)  Just wondering if you did and how it went. . . .

@immatthewj I have the same feeling about Y splitters, not very audiophile-ish. But - also cheaper than a box.

I have not tried "serializing" subs and speakers. I want the signal to go from my amp directly to the speakers to somehow justify my semi-decent Morrow Audio speaker cables. (In the same time, at my level, speaker cables don't matter)