Need to test all my CW components

[bsac335]

Hi All,

I hearing some funkiness coming from my '86  CWs, and one of tweeters stopped working.

 

If I Ohm test all my speakers what is the acceptable range I should be looking for, in the 5 range?

 

If a tweeter is bad is that mean the driver is bad or is the diaphragm bad? This confuses me.

 

THanks in advance.

bob

 

 

[drboar]

Measuring resistance only tells you state of voicecoil Low=short circuit, High= broken wire/connector. If the voice coil is stuck in the gap resistance will be OK (it will show up in impedance measurements if you do a frequency sweep) A bad diaphragm does not show up in resistence measurements.

[Peter P.]

Not sure whether it's the voice coil or the diaphragm-Swap the various parts between the two speakers to see what works and what doesn't. Put a piece of tape on each part and label them so you don't get confused.

 

As far as the resistance measurements, +/- 20% of the speaker's stated impedance should be sufficient.

 

Another use for the voltmeter- clip it on to the tweeter output at the crossover. the AC reading will change with the music. Increase the volume and the number will go up. That will confirm there's no problem with the crossover.

[CWOReilly]

I’d check all connections first. Then swap tweeters if still not working to eliminate crossovers. 

[jjptkd]

15 hours ago, bsac335 said:

I hearing some funkiness coming from my '86  CWs, and one of tweeters stopped working.

 

1 hour ago, CWOReilly said:

I’d check all connections first. Then swap tweeters if still not working to eliminate crossovers. 

 

 Yes I agree with this always good to isolate the problem first a straight tweeter swap between cabinets leaving everything else the same will eliminate a handful of other possible issues don't need to completely reinstall to test if its bad you need to leave it out anyway for replacement or repair.