how do I split the sub out in 3?

[johndoe]

I was planning on splitting the Sub out signal to run two subs, nothing special there. But now I think I might want to experiment with adding some shakers under the chairs. Does that require a third sub amp and sub signal? I'll be most likely installing this sometime in January, but I'd like to plan now.

 

[TLS Guy]

How to split

The truly correct way is to build a buffer amp. to each sub. However if you know the input impedance of the sub, you could put a resistor in series with the live pin of each sub at the sub. You could easily solder these into an RCA plug. If you can tell me the input impedance of your sub I can tell what value resistors to buy, so the sub output does not see too low an impedance. There will be two or three db of gain loss to each sub, but you can advance the sub gain a little.

 

[Hi Ho]

If your subs have a line output you could use that to chain them together and go onto the shaker amp.