Quote Originally Posted by sound_seeker View Post
Thanks a lot guys!
I am checking now Parts Express.

I just wanted to test my multimeter and it showed:
tweeters - 0Ω impedance (it says that tweeters are 12.5Ω)
mid-range - 6.5Ω (they are 8Ω)
woofer - 6.5Ω (it says on the back 8Ω)

Why tweeters are 12.5 when the other 2 speakers are 8Ω?

So I assume the tweeters are blown off.



I don't understand this. How come...?


Thanks in advance!

p.s.
I've been classical musician for more than 15 years, so plenty of ACOUSTIC concerts.
I just want to repair the speakers or buy new for my B-day party.
Tweeters blow because an amplifier is asked to deliver more power than it can. This causes a condition called clipping. The extreme high frequency content of a clipped signal overloads tweeters and burns out the voice coils.

When you have too much power the woofers will usually start bottoming out. This is easy to hear. It's so easy to hear that anyone who isn't drunk or unconscious will hear it and lower the volume.

Having too much power is a good thing.
Wattage/power ratings on speakers are essentially worthless.

The Ohm rating on a given speaker system is not directly related to the Ohm ratings on individual speakers in the box. If the tweeters give a ~12 Ohm reading the chances are they are not blown. A blown tweeter usually means either an open (infinite Ohms) reading or a short (zero Ohms).

Speakers, like just about almost anything can be repaired. The question is are they worth the time and money involved. Only you can answer that.

Check the two links below. One is for a pair of halfway decent small bookshelf's. The other is for a sub woofer. The whole setup is less than $200 including shipping.

IMO they are an improvement over what you're thinking of repairing.

Dayton Audio B652 6-1/2" 2-Way Bookshelf Speaker Pair 300-652

Dayton Audio SUB-80 8" 80 Watt Powered Subwoofer 300-631