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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

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jmarshak
157 posts
 

The CR-1 has been a very impactful addition to my system for 2 years now. The main improvement was unexpected; the speaker's (high frequency and midrange) output became clearer. JL explained that it’s due to the speakers being alleviated from the lower frequency bass duty. The cross overs (on the subs) cannot do this. The CR-1 is excellent.

@ozzy - I can’t imagine using 4 of these JL F113 beasts. I have 2, my room is 18X20x9 and the bass is very palatable in the listening locations. The bass must be extremely uniform in your room. Best Regards.

 

ozzy's avatar
ozzy OP
7,204 posts
 

Thank you so much for the comments. I am really surprised in the difference between line level and speaker level low bass response.

jmarshak,

What crossover frequency are using with your JL subs and crossover?

ozzy

gita
35 posts
 

Congrats, ozzy! I dream of the CR-1.

I have a pair of JL Audio e110s connected like REL. Since I run an integrated that lacks the ability to "loop" the CR-1 into the system, it's going to stay a dream, at least for a while. 

Enjoy!

ozzy's avatar
ozzy OP
7,204 posts
 

gita,

Never thought about an intergrated amp with the CR-1. Seems like there should be a way to make it work.

ozzy

gita
35 posts
 

Ozzy, I could put it in front of my Cary sli-80, but that would accommodate only one input; either my cd player or my 'table.

Or I could first put my two sources into a passive preamp, then that pre into the CR-1, then split into the Cary and the subs.

It gets complicated and adds more to the signal path. Discouraging.

Anyway, I don't mean to rain on your parade. Enjoy!

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