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JVC Speaker getting power but not producing sound
- Thread starter SThundur
- Start date
davenn
Moderator
hi
welcome
so one speaker works but the other doesn't ?
not sure what you mean by that, please clarify ?
do the wires to the speakers just disappear into the speaker cabinet, or are there connections on the backs of the speaker cabinets ?
welcome
so one speaker works but the other doesn't ?
not sure what you mean by that, please clarify ?
do the wires to the speakers just disappear into the speaker cabinet, or are there connections on the backs of the speaker cabinets ?
hi
welcome
so one speaker works but the other doesn't ?
not sure what you mean by that, please clarify ?
do the wires to the speakers just disappear into the speaker cabinet, or are there connections on the backs of the speaker cabinets ?
One speaker does work. The connection is on the backside and is connected using the red and black wires.
davenn
Moderator
OK
so what happens when you move the possibly faulty speaker to the working channel ?
is it dead or does it work ?
this determines if it is a speaker or amplifier channel that is faulty
If it works its not the speaker .... right?
I put it in both channels and it still didn't work, I also switched the cables and nothing. I'm sure it's the speaker. But it's getting power.
davenn
Moderator
OK that would indicate that you have at lease 1 speaker faulty
open it up if possible and see if there are any broken wires
davenn
Moderator
correct
I already opened it up and no wires are broken or look wrong.
davenn
Moderator
it is possible for a speaker to fail without any obvious signs
is it a single or multi - speaker cabinet .... please show a photo of the inside of the cabinet
so I can clearly see what wires go where
Inside the speaker cabinet, measure the resistance of the speakers, and any crossover coils.
I found two large Sony speakers on the curb (thrown away as garbage). They have 10" woofers with small magnets and the cheapest looking 3" "tweeters" I have ever seen. The tweeters were burnt out. My cheap clock radio has a similar looking 3" speaker. I replaced one tweeter and the speaker still sounded bad because the woofer simply makes boom, boom sounds.
I found two large Sony speakers on the curb (thrown away as garbage). They have 10" woofers with small magnets and the cheapest looking 3" "tweeters" I have ever seen. The tweeters were burnt out. My cheap clock radio has a similar looking 3" speaker. I replaced one tweeter and the speaker still sounded bad because the woofer simply makes boom, boom sounds.
What do you mean by 'getting powe'. Some speakers come as a pair with power going in to one box to supply an amplifier which drives both speakers.
If the speakers are the more powerful type with just a red and black lead going in, take an analogue meter, set it to the lowest range and measure the resistance between the red and black wires. A good speaker will measure about 5Ω and there will be a click when the meter is connected.
Edit
Got the pictures at last. They are three way speakers with some crossover components in a bass reflex cabinet. Measure the resistance across each driver.
Note that when the back is replaced it must be sealed to get the right frequency response.
If the speakers are the more powerful type with just a red and black lead going in, take an analogue meter, set it to the lowest range and measure the resistance between the red and black wires. A good speaker will measure about 5Ω and there will be a click when the meter is connected.
Edit
Got the pictures at last. They are three way speakers with some crossover components in a bass reflex cabinet. Measure the resistance across each driver.
Note that when the back is replaced it must be sealed to get the right frequency response.
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Yes
davenn
Moderator
still don't know what you mean by getting power ???
put the good speaker on the other amplifier channel and see if it works
or if you have another old speaker lying around use it instead to save risking the good working speaker
show a photo of the back of the amplifier so we can see where the speaker lines terminate
examine the speaker wire VERY CAREFULLY for the faulty speaker see if it has been damaged
When I set me multimeter to 200ohms, I get 0.05 on the screen for the sub. The one in the middle is getting 016 MΩ and it's set at 2000M. That one seems a little odd. The third one, also the smallest is getting 010 MΩ. That seems like a big difference. Either I did something wrong or it was the speakers
When I put the multimeter to logic (I think that is the one for connection) and hook the multimeter up it makes the noise. https://imgur.com/gallery/RjlVO
I this what you were wanting?
I think I have found my problem, there is a capacitor that is not working going to the middle speaker. In the speaker, the sub is the closest to the input where I would put the wires, so shouldn't the sub work? I should have spotted that sooner, sorry if I have wasted anyone's time.
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davenn
Moderator
you should be using Ohms setting
what makes you think it isn't working ?
you still didn't answer my Q's...
1) what happens when you put the good speaker on the other channel ? or preferably some test speaker
2) did you inspect the speaker line carefully for damage ?
3) no that wasn't the pic I wanted ..... I want to see a pic of the speaker connections on the back of the amp
Dave
