Hooking up my JL sub


Folks - I need a little help. Trying to figure out best possible way to connect my JL Audio F112 sub to my Marantz AV7005 processor/preamp. 
Signal is coming from Benchmark DAC 1 - yes I know it’s a preamp and yes I love the sound directly from it - except that there is no remote volume control and I am lazy. 
Passing signal to my Marantz in Pure Direct mode cuts the signal to the subwoofer. Can I use a RCA Y splitter and pass one signal to Marantz and the other to JL audio? 
ghulamr

Showing 4 responses by ozzy

ghulamr,

A Y adapter has a RCA male on one end and 2 RCA females on the other. You plug the RCA male into the Preamp out and then use one of the RCA  females for the main amp and the other RCA for the sub. You would need 2 for both channels (R&L). Do a google search I'm sure you have seen them.

What you have inserted in your post would work but looks to be more for car stereo. You can buy high quality Y adapters that won't degrade the signal as much.

ozzy
Why would you need a switcher? The sub would be hooked up all the time. It goes off by itself after no signal for about 15 minutes.
BTW,  I own 4 JL Audio F-113 subs.

ozzy
imhififan,

Looking at the Jensen unit it looks like you have to use speakon connectors, is that true?

Update:
Just talked to Parts Express they had no idea how this thing works, no help!

Probably the easiest and best way would be to use either an electronic crossover, or just simply use a y adapter. One end goes to the main amp then speakers, the other goes to sub. You can adjust the sub for the proper low level point, however your main speakers would be playing full range. There may be a hump where the frequencies overlap but with adjusting the crossover point on the JL it can be minimized.

ozzy