Are there any filters (crossovers) on the stock tweeters?

 

Yep, pretty sure there is a simple capacitor that crosses over at about 4500 Hz. I have my original speakers at home, I'll try to remember to look tonight.

 

I thought there was just a bass blocker somewhere on the line from where it splits from the driver and hits the tweeter.....I didnt think it was actually attached to the tweeter itself. Maybe I am thinking of AP1's though...there should be some kind of blocker somewhere in there.

John

 

I'm thinking there isn't and that I'd put some on, but I just don't want to pull the panels off if it already has them. I was just hoping someone knew offhand. Thanks

 

Its right on the tweeter.

 

Here it is in it's birthday suit:





That's one of the reasons mine are sitting on a shelf....

 

Kool. Learn something new everyday!

John

 

Thanks guys. I guess I'll be upgrading soon.

 

What John said. I figured someone would answer before I got back to ya.

 

Yep, that's what I've got. I measured the value, and along with the DC resistance of the tweeter that capacitor forms a 1st order high-pass filter with a corner frequency of 47kHz. Yes, you read that right! I had a hard time believing it myself. But a first-order filter isn't a very sharp cutoff -- it's only 20dB down at 4700 Hz. So they had to set the corner frequency high to effectively limit the bass energy that got through to the tweeter.

If you have an external crossover, you can bypass the capacitor on the tweeter by re-soldering the red wire to the middle terminal. You'll want to drop the level of the tweeter by about 10dB -- in order to match the level of the woofer with that 47kHz filter in place, the tweeter had to have much higher sensitivity than the woofer.