Home » Sponsored » Pi Speakers » Substitutions for 22uF cap in Theater 4 crossover
Substitutions for 22uF cap in Theater 4 crossover [message #46554] Thu, 24 March 2005 07:12 Go to next message
GarlandGarland is currently offline  GarlandGarland
Messages: 60
Registered: May 2009
Viscount
Not knowing much about crossovers, what would the effect be of my using a 20uF cap on the compression drivers in my Theater 4 Pis in place of the stock 22uF?

Thanks.

Garland

Re: Substitutions for 22uF cap in Theater 4 crossover [message #46560 is a reply to message #46554] Thu, 24 March 2005 10:15 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18683
Registered: January 2001
Illuminati (33rd Degree)

20uF works just fine.


Re: Substitutions for 22uF cap in Theater 4 crossover [message #46564 is a reply to message #46554] Thu, 24 March 2005 16:31 Go to previous messageGo to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
Rule of thumb is if you're within 10%, you should be fine. However, given that most caps are +/- 20% of stated value anyways, there's a lot wriggle room.

Follow-up [message #46572 is a reply to message #46554] Fri, 25 March 2005 07:11 Go to previous messageGo to next message
Garland garland is currently offline  Garland garland
Messages: 22
Registered: May 2009
Chancellor
OK, so last night I popped in a pair of GE 97F motor run oil caps @20uF in place of the Solen 22uF's on the compression drivers of the Theater 4's and like the effect. There is a bit of a watery, quavery sound that I expect with new caps but I hope that will settle down after a few more hours. But the first couple of hours of listening reveals a more continous harmonic sructure with a reduction of grain that I often find Solen caps add to the sound. Very musical effect, so far. The only down side is a possible reduction in the amplitude of the high freqs which of course, may be just an aural/mental responce to the missing Solen "tizz".

G.

Re: Follow-up [message #46576 is a reply to message #46572] Fri, 25 March 2005 10:53 Go to previous messageGo to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
I should go down to my local surplus store and look at the "metal cans" they have in stock again. Never really knew what they were. If they have the right values, it would be a lot cheaper than buying Solen caps (although Solens are already a great deal compared to most boutiques)

Gar.

Re: Follow-up [message #46577 is a reply to message #46576] Fri, 25 March 2005 12:17 Go to previous message
Garland garland is currently offline  Garland garland
Messages: 22
Registered: May 2009
Chancellor
I think 20uF Solens are are a bit over $8 at Parts Express and I paid $12 for a GE 97F at Grainger. Still cheap in my book, esp. compared to the prices for Auricaps and Mundorf, etc.

G.

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