avguytx

12-21-2010, 11:21 AM

I'm getting ready to order capacitors for a lot of my speakers since I have a few weeks till Spring session starts for college. The 3's use (2) 600uf caps in them and I'd like to change them out but obviously, this is a rather large single cap. As you can see in the pictures, each crossover is different as to how they did the 600uf caps. One speaker uses a single "can" capacitor where the other side uses (3) 200uf caps in parallel to attain the value. They do follow the Quantum 3 tech diagram (http://www.infinity-classics.de/infinity/technik/manuals/Quantum_3_technical_sheet.pdf), though. These caps are on the woofer side of the crossover and I'm wondering if they're really worth the expense of changing out. But, if I did decide to, has anyone else changed them? If so, what did you use?

Interestingly enough, my RS-IIIa's (which I'll order caps for, too) also show in the tech diagram to use (1) 600uf cap on the woofers but there are actually (2) of them on each pair. Weird. In addition, the tech diagram shows different mH values of inductors as what is stated on Infinity's RS-IIIa/b tech diagram (http://www.infinity-classics.de/infinity/technik/manuals/RS_IIIA_technical_sheet.pdf), too. Just shows you that you always want to look at your own speakers to see what's in there before ordering. See picture below.

Here are some pictures to give you an idea of how different they are and how the boards look. Thoughts? Opinions?

Quantum 3 crossover #1

http://i178.photobucket.com/albums/w276/avguytx/Quantum%203/018.jpg

Quantum 3 crossover #2

http://i178.photobucket.com/albums/w276/avguytx/Quantum%203/020.jpg

RS-IIIa crossover

http://i178.photobucket.com/albums/w276/avguytx/Infinity%20RS-IIIa/003.jpg

Interestingly enough, my RS-IIIa's (which I'll order caps for, too) also show in the tech diagram to use (1) 600uf cap on the woofers but there are actually (2) of them on each pair. Weird. In addition, the tech diagram shows different mH values of inductors as what is stated on Infinity's RS-IIIa/b tech diagram (http://www.infinity-classics.de/infinity/technik/manuals/RS_IIIA_technical_sheet.pdf), too. Just shows you that you always want to look at your own speakers to see what's in there before ordering. See picture below.

Here are some pictures to give you an idea of how different they are and how the boards look. Thoughts? Opinions?

Quantum 3 crossover #1

http://i178.photobucket.com/albums/w276/avguytx/Quantum%203/018.jpg

Quantum 3 crossover #2

http://i178.photobucket.com/albums/w276/avguytx/Quantum%203/020.jpg

RS-IIIa crossover

http://i178.photobucket.com/albums/w276/avguytx/Infinity%20RS-IIIa/003.jpg