PDA

View Full Version : JBL 2360a with 2445J driver



sbjacob
11-01-2009, 11:16 AM
Anybody use this driver horn combo with dual 15's that can share any info on crossover points etc. Thanks

jerv
11-01-2009, 11:46 AM
I use this combo with 2245 woofers and 2204 bass-mids. My system is far from ready - I'm still experimenting and tweaking. As of now, my crossover for the 2360/2445J is passive 4th order at 600 Hz.

JBL crossed at 500 Hz in the 4675 system. Info here: http://www.jblproservice.com/pdf/Theatre%20Series/4675A.pdf

doodlebug
11-01-2009, 01:05 PM
I've had the 4675s with the 3160 crossover. It is important to note that the horns require the equalization network, enabled by S1 in the schematic of the 3160, to work properly.

You can approximate this equalization with the Behringer CX3400's CD switch, if you choose to bi-amp the system. In many ways, this can be easier since you don't have to try to find a set of 3160s or to build out a set from parts.

The biggest problem I had, of course, is that the horns are _so_ huge that you really need to have a 2-car garage where the systems are mounted in each doorway then set up your listening/party area out on your driveway. NAF and WAF (Neighbor/Wife) will be an issue unless you have a very large basement with tall ceilings.

Cheers,

David

sbjacob
11-03-2009, 05:15 PM
I've had the 4675s with the 3160 crossover. It is important to note that the horns require the equalization network, enabled by S1 in the schematic of the 3160, to work properly.

You can approximate this equalization with the Behringer CX3400's CD switch, if you choose to bi-amp the system. In many ways, this can be easier since you don't have to try to find a set of 3160s or to build out a set from parts.

The biggest problem I had, of course, is that the horns are _so_ huge that you really need to have a 2-car garage where the systems are mounted in each doorway then set up your listening/party area out on your driveway. NAF and WAF (Neighbor/Wife) will be an issue unless you have a very large basement with tall ceilings.

Cheers,

David
Thanks I ordered the CX3400 B&H had it for $99. free shipping. Just repainted the horns today.42705

doodlebug
11-04-2009, 07:12 PM
Yep, them's the Big Burtha Butt of tweeters, fo sho!

Cheers,

David

sbjacob
11-12-2009, 10:41 AM
Yep, them's the Big Burtha Butt of tweeters, fo sho!

Cheers,

DavidGot them up and running with a 4th order Butterworth crossed at 600hz and they are sounding very good .I will hook the CX3400 next week for a comparison.42799

1audiohack
11-13-2009, 09:03 AM
It is important to note that the horns require the equalization network, enabled by S1 in the schematic of the 3160, to work properly.
doodlebug


Not as much as you might think. These curves are from a JBL552 crossover. The blue line is flat, the yellow line is the switched on compensation curve written specifically for the 2360.

pos
11-13-2009, 09:11 AM
Not as much as you might think. These curves are from a JBL552 crossover. The blue line is flat, the yellow line is the switched on compensation curve written specifically for the 2360.
that is a +20dB boost between 1khz and 20khz!

1audiohack
11-13-2009, 09:28 AM
that is a +20dB boost between 1khz and 20khz! pos


That is true, however look at the amount of EQ correction it actually takes to get there. Below is a measurment of two seperate crossovers, the white line is the curve pulled from the M552, the yellow line is from a DBX in which I recreated the curve.

1audiohack
11-13-2009, 09:34 AM
The display shot shows the actual amount of cut/boost required. The max cut is 4.5dB, the max boost is 3.0dB. Not as heavy handed as one might expect.

sbjacob
11-13-2009, 11:16 AM
The display shot shows the actual amount of cut/boost required. The max cut is 4.5dB, the max boost is 3.0dB. Not as heavy handed as one might expect.Thank you much for posting this info as I haven't had a chance to run any tests yet.I have a Behringer dual 31 band EQ I will be using and then I will be trying them with the CX3400 Behringer crossover.42816

robertbartsch
11-15-2009, 02:33 PM
I have not used that woofer but I have used the 2445H and it can play well to 500hz. If this driver has any short commings it is in the UHF.

sbjacob
11-19-2009, 07:11 PM
I use this combo with 2245 woofers and 2204 bass-mids. My system is far from ready - I'm still experimenting and tweaking. As of now, my crossover for the 2360/2445J is passive 4th order at 600 Hz.

JBL crossed at 500 Hz in the 4675 system. Info here: http://www.jblproservice.com/pdf/Theatre%20Series/4675A.pdf
This is the crossover I will use on the HF42889

sbjacob
11-26-2009, 02:18 PM
[QUOTE=sbjacob;270460]This is the crossover I will use on the

JoMoCo
02-10-2010, 06:23 PM
sbjacob, how is it going? were you able to finish and listen to the crossover? ....:hmm:

sbjacob
07-18-2010, 11:41 AM
sbjacob, how is it going? were you able to finish and listen to the crossover? ....:hmm:
Yes finished and these are very dynamic sounding speakers with bass that hits hard.

stage One Pro
12-21-2011, 09:36 PM
Anybody use this driver horn combo with dual 15's that can share any info on crossover points etc. Thanks

Yes! I have used these drivers with dual 15" speakers w/ JBL-2445j and 2380 horn combo. I have eight,and I used them with four Jbl SRX-728 sub.
I used this combo for outdoors show and they work great. The cabinets I used are home made after the Jbl 725 serial and I crossover at 1.2khz.
this is a two way crossover.

Steve
Stage One Productions