JBL 3133 crossover schematic

[vmax700]

Looking for schematic for this crossover. Please direct me if this info is available. Thanks

[Mannermusic]

Looking for schematic for this crossover. Please direct me if this info is available. Thanks

See: LINKS, JBL PROFESSIONAL at the bottom of the site cover page.

[vmax700]

Not seeing where you are trying to direct me. please more specifics.

[Earl K]

http://audioheritage.csdco.com/vbulletin/attachment.php?attachmentid=9547&stc=1&d=1124468052

:)

[vmax700]

thanks

[toddalin]

That is the "bi-ampable" version used in the 4333s. This is the home version for the L300s. Simpler and easier to understand.

http://www.jblproservice.com/pdf/Network%20Schematics/3133%20Network.pdf

[vmax700]

I have the biamp version and thank you. I am getting low volume from the LF driver and HF driver, the mid 2420 I have no response. i have confirmed continuity on the 2420. I am assuming failed components in the x-over.

[toddalin]

My first thought would be corrosion in the biamp switch.

[vmax700]

I did spray cleaner into the biamp switch and manipulated the switch many times. I am certainly open to trying again. Any thoughts? I tried to remove this switch from the cabinet but after removing the 4 screws holding it to the back cabinet I was unable to get it to move. I wonder if it is glued in place and did not want to force anything. Thanks

[vmax700]

Guys after some adjusting of the L-pad I was able to get the MF driver operating well however the HF driver sounds very low. Can the pots be cleaned with deoxit? Anyone with any success please reply

[BMWCCA]

I might suggest by-passing the bi-amp switch:
http://audiokarma.org/forums/index.php?threads/cheap-and-pretty-easy-jbl-4430-upgrade.537606/