Help Identifying Caps/Res ? - diyAudio
Go Back   Home > Forums > Design & Build > Parts
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 23rd September 2003, 01:43 PM   #1
Lusso5 is offline Lusso5  United States
diyAudio Member
Lusso5's Avatar
Join Date: Jul 2003
Location: Houston, TX
Default Help Identifying Caps/Res ?

I've got some tweeters with built in x-overs, and I would like some help determining the x-over-point.

The two components I can visualy see on the back of the mount are:

a white rectangular piece with markings "3R9-J 5W-KM-8 Mu" (Capacitor ?)

a blue cylinder with markings "V/C BENNIC LAR BI-POLAR IFD 10MFD NV 50WV" there are no colored bands on this piece; it is all blue.

Would someone help me identify what kind of parts they are, in-turn, what mods they are making to the driver?

Thanks in advance.
  Reply With Quote
Old 23rd September 2003, 02:47 PM   #2
Apex Jr is offline Apex Jr  United States
diyAudio Member
Join Date: Jun 2002
Location: Torrance, Calif
Default Parts

The white rectangle part is a sandstone resistor
3.9 ohm at 5 Watt 5% (J)
Bennic is the Manufacturer of the cap which is a
10 uf at 50 working volts.
Steve @ Apex Jr
  Reply With Quote
Old 23rd September 2003, 07:42 PM   #3
Lusso5 is offline Lusso5  United States
diyAudio Member
Lusso5's Avatar
Join Date: Jul 2003
Location: Houston, TX
Thanks Steve. Im starting to get the picture now, but does that cap identify the ohm rating?

The tweeter casing has 4ohm on it, but a 4ohm 10uf cap would cross it over at 4000hz (from the chart I have).

The tweeter is paired with a 8" woofer, and I just dont see why they would cross it over at 4000hz. I have the factory parameters on the woofer, and response is flat till 2000hz, but then it breaks up.

Could this cap be a 8ohm 10uf ? That would cross it over at 2000hz (makes more sense), but what does that do to the output/impedence?
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help Identifying Cap..... dmongrain Parts 13 1st June 2009 03:20 AM
Identifying a cap... EchoWars Parts 4 27th August 2006 10:43 PM
Identifying SMD chip caps (Newbie here) Safe_Cracker Parts 7 4th January 2006 11:49 AM
Identifying caps, PIO? adalin Parts 3 27th October 2004 04:03 PM
Help with identifying some caps and their values on a phono preamp uniuniunium Parts 62 9th November 2003 04:52 PM

New To Site? Need Help?

All times are GMT. The time now is 07:58 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2