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

jmarshak,

I am crossing over at 80Hz. But still experimenting. Why did you choose 90Hz.?

ozzy

hi @ozzy 

90Hz is what JL recommends.  Also, I tried several from 70hz to 110 and did not like other x-over frequencies any better. Regardless if it's 80 or 90,  I believe the most important part is to find the right phasing on each sub.  That's when the entire system just clicks-in! 

Best Regards

 

For those of you who do own a CR-1 and want to use it with your home theater. The directions are incorrect. If you connect a RCA sub input from the Home theater into the "Managed Subs" input  on the CR-1 you must output using the same type of output (RCA) to your subs. The same goes for XLR input.

I actually used a XLR/RCA adapter into the "Managed Subs" input so that I could still use the XLR subwoofer outputs.

I hope I explained this correctly.

ozzy

Thanks for your reply, Ozzy. I may try to set the DARO individually. My subs are positioned  to cancel a 40Hz mode, and I do not know how the equalizer will react. Obviously it can only really work at minimum phase. Doesn't hurt to try. 

 

Just a quick update:

The CR-1 is working excellent!  I cannot tell the difference between running the Lumin X1 direct to my amps or running it through the CR-1. It is that transparent.

Highly recommended.

ozzy