question about cap

audiodumb · 11th January 2005, 11:41 PM

Hey, I just bought two audiobahn 12" subs and a 1600W amp. The system i have now causes my lights to dim so a buddy of mine gave me a cap he had lying around. We doesnt know where it came from and we were wondering if anyone could decifer what exactly it is. It says the following on it:

Northern Electric co. (no longer exists so im guessing its old)
NSQ4104L2
Electrolytic Capacitor
20000UF
60VDC
DE 4-73

Just wondering if this will do the trick or not. I was planning on buying one anyways so its no big deal if this isnt what im looking for.
Thanks for the help!

thomas997 · 12th January 2005, 10:29 PM

It will work, but its a little overrated.. (60V).

What you want is something around 15V, to match the batteries voltage of 12-14V. They usually come in sizes around 1 Farad (1,000,000 uF).

You can definately try it out and see if it helps, although you might want to "reform" it first. Slowly bring it up to ~20V with a resistor or something.

and be sure of the polarity when hooking it up

11th January 2005, 11:41 PM	#1
audiodumb diyAudio Member Join Date: Jan 2005 Location: Ottawa	question about cap Hey, I just bought two audiobahn 12" subs and a 1600W amp. The system i have now causes my lights to dim so a buddy of mine gave me a cap he had lying around. We doesnt know where it came from and we were wondering if anyone could decifer what exactly it is. It says the following on it: Northern Electric co. (no longer exists so im guessing its old) NSQ4104L2 Electrolytic Capacitor 20000UF 60VDC DE 4-73 Just wondering if this will do the trick or not. I was planning on buying one anyways so its no big deal if this isnt what im looking for. Thanks for the help!

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12th January 2005, 10:29 PM	#2
thomas997 diyAudio Member Join Date: Feb 2004 Location: Vancouver	It will work, but its a little overrated.. (60V). What you want is something around 15V, to match the batteries voltage of 12-14V. They usually come in sizes around 1 Farad (1,000,000 uF). You can definately try it out and see if it helps, although you might want to "reform" it first. Slowly bring it up to ~20V with a resistor or something. and be sure of the polarity when hooking it up

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