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Orgy of Capacitors: The Cap Thread - Page 40

post #586 of 596

I noticed these 100uf 250V Audiophiler capacitors the other day for $14.50 with free shipping with 3% tolerances on the face of it they look decent enough and inexpensive enough for a big film cap to be worthy of a try in the future. I have brought quiet a bit off of the Aliexpress site over the last 12 months and the only problem I have experienced was once a pair of rubber knee patches turned up when I was expecting some capacitors I was quickly given a full refund by the seller. I chuckled at the thought that who ever was expecting the rubber patches might have received my capacitors.

 

http://www.aliexpress.com/store/product/1PC-Axial-Polypropylene-250V-100uF-Audiophiler-MKP-Capacitor-Vintage-Tube-Amplifier-Speaker-Circuit-Crossover/326582_32229590718.html

post #587 of 596

I tried a pair of those Audiophilers in an RA1 clone and they were pretty terrible, the Mundorf MCaps and Claritycap ESAs were way better in the same circuit. They are pretty cheap though, and a nice option for power supply duty, but for the audio path i would pay the extra $10 for those Claritycaps.

post #588 of 596

Hi Mark interesting info thanks I am expecting a care package next week I couldn't just resit having a bid :rolleyes:

 

http://www.ebay.co.uk/itm/231438541917?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT


Edited by JamieMcC - 1/9/15 at 12:56pm
post #589 of 596

99p lol, you didnt have much competition did you :normal_smile :  ...they have an interesting terminal style, should make for some easy mounting on nylon standoffs.

post #590 of 596

lol no I was really surprised I was the only bidder my maximum bid was set somewhat higher and I do feel a bit guilty about winning them but am in discussion to purchase a few more at a higher price from the seller.   I have the spec sheet for them and the terminals are actually tin plated solid copper .  

post #591 of 596

Can someone tell me how to replace the caps on the Crack with 100uF 250v Film Caps? Does it have polarity? Also, if I wanted to add more wire to it to extend it, does it matter what color wires I'm using?

post #592 of 596
Quote:
Originally Posted by scjarrett87 View Post

Can someone tell me how to replace the caps on the Crack with 100uF 250v Film Caps? Does it have polarity? Also, if I wanted to add more wire to it to extend it, does it matter what color wires I'm using?

Orientation and wire color don't matter with film caps. Securing them to the chassis is the the most challenging part. Enjoy!

Caveat: if you hook up the inner foil of the cap towards the output, you theoretically minimize noise, but personally I cant hear a difference.
Edited by skeptic - 1/16/15 at 7:41pm
post #593 of 596
Quote:
Originally Posted by skeptic View Post


Orientation and wire color don't matter with film caps. Securing them to the chassis is the the most challenging part. Enjoy!

Caveat: if you hook up the inner foil of the cap towards the output, you theoretically minimize noise, but personally I cant hear a difference.

Thank you for that reply. Now I can finally begin the process. Sorry, I'm a total newbie with film caps. What part of the cap would be the inner foil?

post #594 of 596
Quote:
Originally Posted by scjarrett87 View Post
 

Thank you for that reply. Now I can finally begin the process. Sorry, I'm a total newbie with film caps. What part of the cap would be the inner foil?


Unless you have a oscilloscope to test a general rule of thumb observed from looking at the expensive capacitors where inner out foils are identified is the signal flows from left to right in the same direction as when looking at the text on the labelling of the capacitor.  It really shouldn't matter in the Crack so I wouldn't worry to much about it.

post #595 of 596
This thread on bh expands on jamie's post above and describes how you can test it by putting ac across the cap. http://bottlehead.com/smf/index.php?topic=2366.0

A guy near the end also indicates that he spoke with solen and was told that the longer lead is outer foil.
post #596 of 596

Sorry, I guess this post will be better in the Crack thread.


Edited by scjarrett87 - 1/19/15 at 9:08pm
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