While playing music outdoors for a friend's kid's grad party, a rogue storm rolled in fast and blew the tent covering my system off while it was playing before I could get to it to turn it off. Strangely the amp still functions, but both speakers are completely dead. They appear dry inside, I checked both fuses, and they seem fine, and still no sound from any part of the system. It breaks my heart to think they are done for this world, so looking for ideas on what I can check or try before giving up on them. Thanks!
Set multimeter to measure DC resistance and check the loudspeaker terminal. Assuming midrange and tweeter have any kind of high pass filter, the measurement would show you woofer voice coil dcr and any LP inductor dcr that may be in the circuit. Check drivers separately also. While doing that, push woofer cone to see if it makes any scraping noise.
How do you know that the amp still functions? Did you try other speakers with the amp?
It's very unlikely that both speakers would suddenly develop the same problem at the same time.
If the woofer measures around 5 or 6 ohms at the input terminals (which you may not be able
to measure accurately unless you have a good meter), it is likely to be ok.
Connect and disconnect (momentarily) a 1.5V battery to the speaker terminals and see
if you get a click noise at the instant of connection. You should.
It's very unlikely that both speakers would suddenly develop the same problem at the same time.
If the woofer measures around 5 or 6 ohms at the input terminals (which you may not be able
to measure accurately unless you have a good meter), it is likely to be ok.
Connect and disconnect (momentarily) a 1.5V battery to the speaker terminals and see
if you get a click noise at the instant of connection. You should.
Thanks guys. I'm no electrician or tech guru, but managed to take a driver out and got this reading.
No scraping when pushing the woofer cone, but I did hear a clicking each time meter probes connected. Also, not sure what this means, but there is no reading when I touch probes to the speaker input terminals on the back of the speakers (where speaker wires connect) but when I did that with a working pair of Pioneer speakers I did get a reading. Could it be in the circuitry behind the back panel (see 2nd pic)? As mentioned, the fuses don't appear blown, but does that necessarily mean they aren't?
No scraping when pushing the woofer cone, but I did hear a clicking each time meter probes connected. Also, not sure what this means, but there is no reading when I touch probes to the speaker input terminals on the back of the speakers (where speaker wires connect) but when I did that with a working pair of Pioneer speakers I did get a reading. Could it be in the circuitry behind the back panel (see 2nd pic)? As mentioned, the fuses don't appear blown, but does that necessarily mean they aren't?
The clicking sound is GOOD when you're measuring the woofers out of the box....sounds like the fuses are bad, did you measure them directly?, looking for a dead short, many times they can look OK, but aren't.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
-----------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
Ok, I think the fuses may be bad, which would be a godsend. I'll pick some up tomorrow and try. Tempted to wrap the fuses in tin foil to test, but Don't want to turn a simple fix into a nightmare, lol. You guys are awesome, thanks. I feel a little dumb, but wiser for the comments. Appreciate all your input to help out. I'll post results tomorrow night.
Great, next time when you measure dcr, choose the setting x10 when you expect measuring lower resistance values, which tells you that the display reading should be multiplied by factor 10 to get the value. You can also test multimeter for accuracy by measuring a known value of a resistor ( for example 10R, 100R, 1k, 10k).
Good to hear your up and running.
Gentleman on YouTube has a channel about
restoring Vega Speakers.
Might be of interest to You
Saving Vega's
Gentleman on YouTube has a channel about
restoring Vega Speakers.
Might be of interest to You
Saving Vega's