Subwoofer cable question

IF you ran all your subs off just the right channel do you think all of the bass track on the source recording will be reproduced?

Below 80 Hz, yes. The recording studio examples you are talking about is different. Drums, bass, etc have lots of output above 80Hz. This higher frequency output is what determines stereo L and R and gives us imaging. Below 80Hz simply does not do that. It is not a question of how it was recorded. That doesn’t even enter into it. Because the waves are so long, when playing back it no longer matters.

The proof of that is while you can hear a difference in the recording studio you cannot with just the subs at home. I have run them every which way just to prove this to myself. Also a lot of subs that have L and R channel inputs, if you look at the circuit diagram they are summed inside. L and R are there for convience.

Can’t say as I blame them. If the cost is an extra irrelevant RCA connector vs answering this same question a hundred times a day till the heat death of the universe I would throw in the RCA too.

Thus, clearly, the device above is useless, unnecessary, superfluous, and ill-advised.

I would buy another sub as 2 subs are easier to integrate into your room. Otherwise, +1 imhififan has the best answer. In my opinion all subs I've tried sound better when driving through the low-level inputs.

Also a lot of subs that have L and R channel inputs, if you look at the circuit diagram they are summed inside. L and R are there for convience.

NO! If your main speakers are small monitors and started roll off at higher than 80Hz , if you connect only one channel to the subwoofer, you will loss some information from the other channel even the recording below 80Hz is mono!

A lot of bassist use stereo basses. Bridge or rear for tight,clean tone. Neck or front for depth. We also use stereo chorus effects, sound processers blending triple sub octives and octive up effects, stereo delay and on and on. They are not recorded in mono! Listen to Chris Squires bass on 'Yours Is No Discrace' sweeping left to right. This isn't your daddy's bass.Maybe your  set up or room is smearing the bass, but stereo bass exists. Sorry for the rant.

I don’t have the sub yet so I didn’t know about the included high level cable. So this cable connects to speaker taps on the amp and the other end to sub? Then normal speaker cables go from high level out on sub to main speakers?

Richard Edmund Lord (REL) originally designed his powered "Sub Bass System" to accommodate systems that lacked any preamplifier outputs and using tiny speakers with limited low frequency output. Hence the high or speaker level connectivity to the amplifiers speaker outputs.

There are many other subwoofer brands that offer high level connectivity as an option yet suggest using the more direct to the source low level (RCA / XLR) connection of the preamp outs as do professional and commercial installations.

I would never recommend one unless the only option was no sub at all. Do some more homework.