PDA

View Full Version : 3107 crossover capacitors



Paky33
08-23-2006, 04:47 PM
Does someone know how to tell me that type of caps they are those of the 3107 crossover?Particularly: what are the yellow type?
http://audioheritage.org/vbulletin/attachment.php?attachmentid=13316&stc=1&d=1141176029

Mr. Widget
08-23-2006, 05:59 PM
The yellow caps are mylars and the blue one is a NP electrolytic. These caps were pretty much the standard back then. Later JBL took to bypassing them with .1 or .01 film/foil caps.


Widget

Paky33
08-23-2006, 06:47 PM
As I have written in another post: I want to replace those.
I believe better to replace that bypassing the old caps. in
I had thought about replacing the caps on the tweter and those for the middle tall with JENSEN paper/oil. For all the others of the common caps in polipropilene. Are you able sayd me if this is all right? I don't know whether to use for all the caps in polypropilene. Can you recommend me which brands and types to use?:banghead:

Thanks

Paky33

Paky33
09-02-2006, 02:34 AM
Does nobody know nothing?

Zilch
09-02-2006, 03:11 AM
I'm now using Solen metallized polypropylene for everything, with no bypass caps.

I'm not about to mess with oil/paper, nope.

I am biasing the HF sections of final designs.

[And some "maybe" final ones, also.... :p ]

Ian Mackenzie
09-02-2006, 10:37 AM
[quote=Paky33]Does nobody know nothing?[

apparently.

If you are refering to the stuff for sale on Parts Connexion yes the paper an oils are nice, but they are not meant to be a compensation for other issues. Most people around here would not consider such expensive components. Check diyaudio and other forum for ideas.