I just took off my door panel on my 2004 Sedan with Bose system to change out the capacitor to 10uF. To my shock, I had a 3.3uF 25V capacitor instead of the 4.7uF that most people have.

Anyone know what's up with this? That's something like only over 10,000 Hz hitting the tweeters.

 

I happen to have my old tweeter on my desk. It's got the 4.7uf 50V cap glued to it. Maybe they ran out of 4.7's and some meathead grabbed the next one in the box?

Take an ohmmeter to it and see if it tests at the same 4.0 ohms that the rest of our tweeters test at, although I can't imagine it being MORE than 4 ohms. If anything they'd want to go down, which would require a larger-numbered uf capacitor.

No clue, man! I can't imagine the highs being any worse than they already were.

-- Rob

 

The tweeter says 4 ohms on it. I don't have an ohmmeter handy. I'm sure it must be a screw up unless the tweeters were 8 ohm.

I guess if they are careless enough to put 4.7uF, 3.3uF is just as bad :-)

 

So with a 4.7uF and a 4 ohm tweeter in there, the crossover frequency is 8.5 kHz correct? Based on Fc=1/2*pi*RC

And replacing it with a 10uF changes the crossover frequency to ~4 kHz?

Black on Black 5AT Coupe, Navi
Falken Koblenz 19x8.5 F 19x9.5 R
Falken FK-451 245/35 F 285/35 R
HKS Legamax Exhaust
350Z Duct
Stillen Hi Flow
7 Wire Hypergrounding Kit

 

I thought it was 0.159/(C * R) = F.

Which would make it 12054 Hz.