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Where to get large value NP caps ?.

97.115.122.58
Posted on June 19, 2012 at 11:55:44
Coner
Audiophile

Posts: 3703
Location: S.W. Washington state, USA
Joined: November 17, 2001
 Unfortunatly, this AR LST has big caps that ar very old, here are
the values. I mainly need the 2500 mf, the others are no problem.

2500 60V NP 20%
150 50V NP 10%
40 50V NP 10%

 

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RE: Where to get large value NP caps ?., posted on June 19, 2012 at 12:44:57
djk
Manufacturer

Posts: 6135
Joined: June 17, 2000
 I would use two 4700µF back-to-back.

 

RE: Where to get large value NP caps ?., posted on June 19, 2012 at 18:31:26
pictureguy
Audiophile

Posts: 22597
Location: SoCal
Joined: October 19, 2008
 Good idea!
What about ESR?
Too much is never enough

 

RE: Where to get large value NP caps ?., posted on June 20, 2012 at 00:50:11
djk
Manufacturer

Posts: 6135
Joined: June 17, 2000
 I wouldn't worry about it too much, I would parallel the combination with a film cap, or even consider battery bias (since there are two caps anyway).

 

Battery bias in a speaker crossover? (nt), posted on June 20, 2012 at 07:57:39
1973shovel
Audiophile

Posts: 10117
Location: Greenville SC
Joined: February 25, 2007

 

RE: Battery bias in a speaker crossover? (nt), posted on June 20, 2012 at 13:49:22
Coner
Audiophile

Posts: 3703
Location: S.W. Washington state, USA
Joined: November 17, 2001
 Yes I think it involves a standard 9V batt., and I guess it does work,
but this is not my speaker (AR LST....old) so won't be doing that.

 

RE: Battery bias in a speaker crossover? (nt), posted on June 20, 2012 at 18:11:35
djk
Manufacturer

Posts: 6135
Joined: June 17, 2000
 Then I would just use the pair of 4700µF/100V back-to-back with a 10µF film bypass.

 

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