Need help for 4315 crossover

[mideale]

Hi,
Inside this messy crossover, one of those capacitors is dead.
Reference number is 1068-7820, it is the one for the 12db low pass.
Please, anyone can tell me the value of this capacitor.
Many thanks,
Philippe.

[hjames]

Hi,
Inside this messy crossover, one of those capacitors is dead.
Reference number is 1068-7820, it is the one for the 12db low pass.
Please, anyone can tell me the value of this capacitor.
Many thanks,
Philippe.

Here are the various schematics ...

from a 4315 References thread ... (http://audioheritage.org/vbulletin/showpost.php?p=171283&postcount=4)


Link to 3114 Crossover network (for 4315) at JBL Pro (dated 07/74)
http://www.jblproservice.com/pdf/Net...%20Network.pdf (http://www.jblproservice.com/pdf/Network%20Schematics/3114%20Network.pdf)


Link to 3114A Crossover network (for 4315A & B) at JBL Pro (dated 3/76)
http://www.jblproservice.com/pdf/Net...%20Network.pdf (http://www.jblproservice.com/pdf/Network%20Schematics/3114A%20Network.pdf)

Also see Techbot link here -
http://www.audioheritage.org/vbulletin/showthread.php?t=10615 (http://www.audioheritage.org/vbulletin/showthread.php?t=10615)

[Mr. Widget]

I suppose you mean this one circled in red? You should be able to find Solens or another brand of metallized polypropylene capacitors to replace it. I guess I would do the pair of speakers.

I assume the originals are NP electrolytics or maybe mylars, in either case new metallized polypropylene capacitors will be better.


Widget