Xover Advice

[elwood127]

Hey all, I built some diy cabs using a JBL LE14A LF, a JBL 2412H HF and a 6inch Cerwin Vega PM7H Midrange (from model SE-380) with a JBL N110 xover. The cabs are 36 x 18 x 13 and have an internal volume of 1.5 cf after insulation. They sound great but one never knows if they could be better without test gear. I'd like to rebuild xovers and wondered if you had any suggetions on better values for my setup? The woof specs are 30-1300 hz but were straight through on the original Lancer 55 network. No specs on mid or HF. 41 watt SU-7300 supplying power. Please look at N110 schematic and see if any improvements could be made to better serve this speaker combo. Thanks.

 

[Zilch]

2412 on what horn?

There's no HF comp for it in the N110 XO.

I recently looked at what's happening with the HF in JRX115, I believe it is, and found comp there:

http://www.jblproservice.com/pdf/JRX Series/JRX115.pdf

Similar in JRX112:

http://www.jblproservice.com/pdf/JRX Series/JRX112M.pdf

Hunt up different JBL products using 2412 for more ideas.

Replace those NPE caps in the N110 with polyfilms.

Get measurement gear set up so you can measure what you're doing.... :yes:

 

[elwood127]

Horn is Parts Express # GT 400PB(9 1/4 x 3 1/4). Port tube is 4 5/16 x 6. Thanks for looking.

 

[Zilch]

No specs available, but called "Directivity" horns on the Goldwood website, implying that they do require HF Comp.