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8mf capacitor v.s. 8.2mf

 
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WildIowa



Joined: 06 Mar 2004
Posts: 489
Location: Henderson IA

PostPosted: Sun Jan 01, 2017 4:17 am    Post subject: 8mf capacitor v.s. 8.2mf Reply with quote

I am rebuilding two older JBL stereo speakers including replacing the caps in each crossover. The OEM cap is 8mf. I can get an excellent replacement that meets all specs etc.....EXCEPT the new cap is rated at 8.2mf. Just can't seem to find the 8mf I want.

Is this difference enough to seriously impact the crossover performance and listening? This is the JBL L26 model, AKA the "Decade" model. I'm not knowledgeable enough to know if this is too much variance. Any help appreciated. Thanks. IA.
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RolandR



Joined: 03 Sep 2003
Posts: 8908
Location: Coastal Calif.

PostPosted: Sun Jan 01, 2017 2:59 pm    Post subject: Reply with quote

Yes, that's close enough. Not going to hurt anything. Matter of fact depending on the tolerance, those stock capacitors could have be anywhere from 7.5 to 8.5 MF. And if you are replacing them with 8.2 MF then its close enough.

I build my own passive crossovers so I know a little on inductors and capacitor values. Wink
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WildIowa



Joined: 06 Mar 2004
Posts: 489
Location: Henderson IA

PostPosted: Sun Jan 01, 2017 7:31 pm    Post subject: Reply with quote

As always, I knew someone here had the answer! Parts Express has some nice caps for crossovers but not exactly 8mf...so I am happy these will work fine. The tolerance on these is 1% most are 5% and up to 8 or even 10% so it will be OK....thanks again for the help. IA.
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RolandR



Joined: 03 Sep 2003
Posts: 8908
Location: Coastal Calif.

PostPosted: Sun Jan 01, 2017 9:50 pm    Post subject: Reply with quote

... but please don't asks me what's the difference between type of capacitors or inductors used for passive crossovers and why the big price differences. Beats me- lol Laughing

Here's my crossovers, parts bought from Part Express:

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Les



Joined: 06 Jan 2005
Posts: 1961
Location: Kansas City

PostPosted: Tue Jul 25, 2017 12:58 pm    Post subject: Reply with quote

Some caps can even have 20% tolerance. Use the 8.2's. You'll be happy.
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