Rebuilding X-over in L-112's

[drummerwill]

I'd like to upgrade the crossovers in my JBL L-112, do anyone know
where I can find a schematic that would show caps and resistor. Or
could anyone tell me the values to change that would make the biggest difference in the sound.
Thanks
Willie

[jandregg]

Try this link, or search for L112.


John

http://www.audioheritage.org/vbulletin/showthread.php?t=10661&highlight=l112

[DavidF]

I'd like to upgrade the crossovers in my JBL L-112, do anyone know
where I can find a schematic that would show caps and resistor. Or
could anyone tell me the values to change that would make the biggest difference in the sound.
Thanks
Willie

I had the models with the large air-coil inductor on the woofer (later models used a laminate core). All of the parts were good quality and sounded quite nice. I tried different caps on the mid and tweeter and found no traceable difference over the stock by-passed mylars.

One caveat might be the charge-couple effect that is mentioned and scattered all over this sight. This involves major alterations that will not fit on the stock board. But it might provide one true upgrade path.

DavidF