JL Audio CR-1 Crossover


So, I own 4 JL Audio F-113 subs. Each of these were bought used and all have been updated at JL Audio.

I have been very happy using them in my system. The main speakers are Focal Sopra 2’s. I am using a Iso-Max Jensen transformer(s) model #SP-2SX to connect the subs to my mains and it seems to work pretty well. BTW, the Iso Max unit(s) convert speaker level to balanced (similar to the Rel subs) using Speak-On fittings.

The JL Audio solution to the high/low band pass issue was their CR-1 Electronic crossover. I always wanted to try one of these but at $3000 list I didn’t think it could improve that much over my Iso Max unit(s).

However, I was able to find a used JL Audio CR-1 electronic crossover and I have just now connected it up.

The first thing I noticed was how much very low bass I was missing. Example: Linda Ronstadt “Blue Bayou” the bass now digs into the subterranean.

I guess I need to play with it a while. but I was wonderin’ if anyone else who owns or has owned this unit can share any set ups tips and general opinions of the unit.

ozzy

128x128ozzy

That is why I am using RCA/XLR adapters to only use the XLR inputs.

So, I am confused as to why he is getting the noise.

Lifting the ground switch may help. 

And yes, their customer support is excellent. Ask for Randy.

ozzy

Interesting Topic.

 

Currently I use speaker terminal to sub high level input. (Morrow)

Switched over to using the second XLR output on the preamp to connect to the low pass filter on the sub instead. (MIT Termintor cable).

Volume for both connections is different, but I don’t hear low bass information that is missing via the high level inputs. 
 

possibly the CR1 makes the difference.

 

Hello Northman,

just coming back to this thread now and noticed your comment on the buzzing issue while using both balanced and unbalanced connections. Did the JL guys help you find a solution?  I’m still dealing with this buzz when I use the HT bypass switch.

 

thanks!

Just add a XLR to RCA adapter to the RCA cables that are plugged into the CR-1.  That way only the XLR inputs on the CR-1 are being used.

ozzy