Subwoofer connection

https://imgpile.com/p/XZu0o8E

Hi elliottbnewcombjr,

Thanks for your answer, if you ever visit Barcelona, you’re wellcome to come home. Music and pinot noir are granted!

As well as the other captains…

By the way, how can I post an image?

OP,

Everyone, click on op’s name, details, view his system, I would love to hear your system!!!!!!!!

https://www.audiogon.com/systems/9589

I guess those amps have enough power for the lows 

Using RCA preamp line level rather than speaker wires for subs is best:

It is often better to remove the lows from the signal, send only the lows to the sub, and then your amp(s) for your mains will not need to try to make low bass and thus your main speakers will also be relieved of the job of producing lows.

That is how/what allows a low powered amp, often a tube amp, to be 'enough' with the help from a self-powered sub.

So, rca out to a crossover somewhere, often within the sub, the sub takes the lows and sends the rest of the signal back out to your amp(s).

IF you use both rca out from your preamp, or a splitter like shown, then your mono blocks and main speakers will still be trying to make all frequencies, including the lows intended for the sub. It's the lows that need the most power.

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Thank you all, captains, as you will see, if  everything else fails, ask and follow the captains suggestions. It’s what I’m going to do inmediately.

Yogiboy, perhaps I can use the second output that already exist in CAT, will be the same, but thanks again for the image. I’ve never seen this kind of connector

That preamp has a toggle to choose output one or two. You will need a pair of  Y adapters from the preamp one outputs to the amp inputs and the sub inputs. You will need something like this  to run an active subwoofer!

Just google "how to connect an active subwoofer into a Convergent audio preamp"  Long expanation and video.

If both sets of RCA outputs run off the same volume knob, you should have no trouble.  (nice preamp!)