Electrolytic cap question (not quite covered elsewhere) - diyAudio
Go Back   Home > Forums > Design & Build > Parts

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
Reply
 
Thread Tools Search this Thread
Old 14th March 2006, 04:44 PM   #1
Puggie is offline Puggie  United Kingdom
diyAudio Member
 
Join Date: Oct 2004
Default Electrolytic cap question (not quite covered elsewhere)

Right, I'm re-capping a particularly good in car CD player (Clarion/AddZest DRX9255, more info here if you want it; http://forum.elitecaraudio.com/showt...threadid=96611), I was originally looking at using the Panasonic ECA audio caps as posted in another thread but they were deemed 'consumer junk'

So I'm now looking at other options. the problem is size, as you can imagine in a car cd player they don't half pack em in. I'm currently looking at the std range of Blackgates, reasonable cost and available in suitable values, I mostly need:
3.3uF@50V
10uF@16V
22uF@16V
47uF@6.3V
47uF@16V
100uF@6.3V
100uF@16V

most of the current caps are labeled wit 'FDS' the top of the F and bottom of the S stretching along the whole logo and are all 85deg rated, I don't know who's caps these are.

So as you can see small value caps and they are all pretty well packed in, typically no more than 2 mm between caps. The obvious going for higher values is not really an option due to size.

So what do people reccomend? Black gate stds, there are a couple of OSCONs on the board, whatever I go for needs to be relatively small and it does get warm in there.

thanks guys and girls
  Reply With Quote
Old 15th March 2006, 09:05 AM   #2
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Hi,
somewhat tongue in cheek, can I suggest you give up trying to produce good sound using Solid State electronics in the In Car environment.

Go back to using valve (tube) gear as they originally did.

Space is not a problem if you do. The car becomes too full to carry passengers.

More down to earth, you have already recognised the problem.

Very compact electrolytics have very compromised capacitor characteristics.

If you strive to improve on any particular specification you must sacrifice space saving. But then it won't fit. I don't think you will find a solution.
__________________
regards Andrew T.
  Reply With Quote
Old 15th March 2006, 11:57 AM   #3
Puggie is offline Puggie  United Kingdom
diyAudio Member
 
Join Date: Oct 2004
Funny you mention that I've just swapped the Sovtek 12AX7s in my car amp for JJ Tesla ECC83s from Watford valves (seriously).

I know the whole thing is a compromise, I'm just trying to make the best of that compromise. No way can I squeeze film caps in there but I;m hoping I can upgradewhat I have and maybe get physically larger electrolytics in key areas wherever possible.
  Reply With Quote
Old 15th March 2006, 12:08 PM   #4
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
My long term favourite electros have been the Rubicon ZA and ZL range.
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 15th March 2006, 12:21 PM   #5
lndm is offline lndm  Australia
diyAudio Member
 
Join Date: Mar 2006
Location: nsw
Quote:
Originally posted by Puggie
12AX7s in my car amp
What do you use for B+? [Sorry, off topic]
  Reply With Quote
Old 15th March 2006, 03:23 PM   #6
Puggie is offline Puggie  United Kingdom
diyAudio Member
 
Join Date: Oct 2004
Quote:
Originally posted by lndm

What do you use for B+? [Sorry, off topic]
Its about 50V going by the shock it gave me while changing one of the valves the other day
There is very little real technical info about the amp, its a US Amps TU-600 if your interested enough to Google for info.


Cheers for the input Pinkmouse
  Reply With Quote

Reply


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
Stupid electrolytic cap question....... firenewt Tubes / Valves 4 24th October 2006 12:26 PM
Very Newbie Question - Is this a electrolytic capacitor? zBuff Parts 1 11th July 2006 02:05 AM
Most covered song? infinia Music 1 5th April 2006 02:12 AM
A question for folks who have tried skinning electrolytic caps KT Parts 6 16th September 2005 11:09 AM
Electrolytic screw tab question serengetiplains Parts 2 27th December 2004 11:45 PM


New To Site? Need Help?

All times are GMT. The time now is 04:39 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2