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Old 10-20-2010, 06:58 AM
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Default Why does my stereo turn off at high volume?

Just installed a Kenwood stereo and it shuts off when turn the volume up past 60%. The speakers are a couple of West Marine cheapo's. How do I fix this? Do I need a thicker power wire? When it comes to electronics I'm kind of clueless.
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Old 10-20-2010, 08:10 AM
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Either power wire or possible the speaker wire if it's very thin. Could be a few other things but those are the most likely.
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Old 10-20-2010, 08:13 AM
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Built in protection...good thing to have. Invest in some decent speakers and wire....LOL
You won't regret it
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Old 10-20-2010, 08:17 AM
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good chance the power wire is suspect. Does it lose sound or the actual unit turn off? do you have to turn it back on?
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Old 10-20-2010, 08:46 AM
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You may also want to check the impedance of the speakers and also check what the stereo calls for.

If you really want to dig in to it... How many speakers are being used? How many output channels are on the stereo? Are you using an amplifier? If you are using more than one speaker per channel, are the speakers wired in series or parallel?

The last question can cause some major things to happen with audio systems, as speakers in series will have much higher impedance than speakers in parallel. If the stereo can not work in a lower impedance, it may be shutting down to protect itself.

As stated before, it could be due to the speaker wiring not being heavy enough to conduct properly, loose/faulty power wires, or not using large enough wires to power the stereo. Did you extend any of the power wires that came with the stereo?
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Old 10-20-2010, 04:59 PM
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Default low voltage...

I put a 2K Watt variable transformer on the 15amp circuit that controlled the stereo in my son's bedroom. When the stereo went up over 60% I gave him a brown out. Please don't tell him, he never figured it out.
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Old 10-20-2010, 05:09 PM
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Your neighbor were tired and bought the same remote control.
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Old 10-20-2010, 06:05 PM
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Could be about 5 things:
1) Short in speaker wires - make sure speaker wires are not touching any where
2) Too many speakers on the same speaker wire - put only 1 speaker per wire and make sure it is an 8 ohm speaker to start with - or a bad/blown speaker
3) Unit is getting too hot, is it boxed in? Try blowing cool air across it
4) Not enough power, try a bigger power lead
5) It really is at max volume and getting too much THD and is shutting down in protect mode.

My guess is #1 or #2 is your problem, try them in order. One of the above should fix it
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Old 10-20-2010, 07:51 PM
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Originally Posted by SaltyG View Post
Could be about 5 things:

2) Too many speakers on the same speaker wire - put only 1 speaker per wire and make sure it is an 8 ohm speaker to start with - or a bad/blown speaker
car/marine stereos are rated to handle a 4 ohm load.
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Old 10-20-2010, 08:30 PM
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Agreed, but many speakers rated at 8 Ohms are actually only 6.8 Ohms. The 8 Ohm rating is based typically at one frequency, like 2Khz, when normal full range music is played, the average ohms seen is often much less. Thus, 2 speakers on the same line might present only a 3 ohm load. I have seen some 4 ohm capable receivers go into protect mode right at 4 ohms load on the nose. Still probably a short in speaker wire some where, but depending on how many speakers on one channel, could be causing too low of an ohm ratings.
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Old 10-20-2010, 08:43 PM
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Cool Stereo turn off at hi volume because

The louder you play,the more power it needs,power + or - wireing
is to small a gauge or bad connections to 12 volts use a volt ohm meter and watch the meter reading as you turn up the volume.
If it drops check power wireing and if it is low before you raise the
volume see if you can find the same reading on one of the batteries.
It may have a charge problem or battery is bad have it load tested
after a good charge ,if bad change it out.
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Old 10-20-2010, 08:47 PM
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Originally Posted by SaltyG View Post
Agreed, but many speakers rated at 8 Ohms are actually only 6.8 Ohms. The 8 Ohm rating is based typically at one frequency, like 2Khz, when normal full range music is played, the average ohms seen is often much less. Thus, 2 speakers on the same line might present only a 3 ohm load. I have seen some 4 ohm capable receivers go into protect mode right at 4 ohms load on the nose. Still probably a short in speaker wire some where, but depending on how many speakers on one channel, could be causing too low of an ohm ratings.
but you told him to make sure to run only one 8 ohm speaker on each set of speaker wires.... that is why i corrected you. i'm just trying to make sure he doesnt run out and try to find 8 ohm speaker due to misinformation received on the internet.

in my 16 years professionally installing car audio/marine electronics, i have never seen a properly working 4 ohm speaker shut down a head unit due to a head unit not being able to handle the 4 ohm load. unless you are talking about the garbage they sell at flea markets... and in that case you are lucky if they power up at all.


another thing that could be the culprit, is the speakers just can't handle the power, and are reaching their mechanical limit, which could be shorting out the voice coil, thus shutting down the head unit.
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Old 10-20-2010, 09:18 PM
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Had the exact same problem with my Kenwood. I spoke to Tech Support, and said it could be it was not getting enough power/ or power wire was too small. So relocated from electronic box, to inside the console where I could go straight to the battery, and put a wired remote on the console. Knock on wood, I went fishing Sat. and the unit never kicked off at a higher volume. Hope this helps.
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Old 12-03-2010, 12:55 PM
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Wouldn't be a bad idea to put a capacitor in series with your power cable also so you can have a continous voltage going to your system. Most times capacitors are used for systems in cars but for a constant voltage on a boat it wouldn't be a bad idea either. Could be chasing a big fish and a low frequency on a song could plop your fishfinder off and you lose sight of the fish. Depending on the watts your speakers pull would depend on the rating in farads the capacitor would need to be.

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Old 12-03-2010, 01:48 PM
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Quote:
Why does my stereo turn off at high volume?
Quote:
Because it doesn't like your music!!!


Why did the chicken cross the road?

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Old 12-03-2010, 03:19 PM
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Quote:
Originally Posted by XV2PS View Post
Your neighbor were tired and bought the same remote control.
When I was about twelve years old we had a neighbor who would put an AM radio in the window facing our house so they could listen to it in their back yard.

I rigged up an old radio as a transmitter to block the signal. They would tune it in again and I would block it again. Finally, they gave up.

I don't know why they never just used an extension cord and put the radio in the back yard near where they were.
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Old 12-03-2010, 03:22 PM
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Quote:
Originally Posted by threeriversmarine View Post
Wouldn't be a bad idea to put a capacitor in series with your power cable also so you can have a continous voltage going to your system. Most times capacitors are used for systems in cars but for a constant voltage on a boat it wouldn't be a bad idea either. Could be chasing a big fish and a low frequency on a song could plop your fishfinder off and you lose sight of the fish. Depending on the watts your speakers pull would depend on the rating in farads the capacitor would need to be.

Keith
Do you just sell electronics or do you also install them?

Putting a capacitor in series with the power cable would block the flow of DC current. The stereo would get no power and would not operate at all.
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Old 12-03-2010, 03:24 PM
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Quote:
Originally Posted by SaltyG View Post
.......... Still probably a short in speaker wire some where, ............. .
If there is a short in a speaker wire, there will be no sound from the speaker(s) receiving power from that wire.
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Old 12-03-2010, 03:31 PM
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Originally Posted by whonickjones84 View Post
Just installed a Kenwood stereo and it shuts off when turn the volume up past 60%. The speakers are a couple of West Marine cheapo's. How do I fix this? Do I need a thicker power wire? When it comes to electronics I'm kind of clueless.
The stereo may be drawing enough power to cause a voltage drop in the power wires (both positive and negative). This could be because the circuit is too long for the wire gauge and the amount of power being drawn by the stereo or it could be because of some loose or corroded connections. Or, as some have suggested, the speakers may not be wired correctly.

If you're "clueless" when it comes to electronics, it's going to be difficult for you to test for, and correct this problem. It would help if you could describe the boat and how you connected the stereo to the boat's electrical system.
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Old 12-03-2010, 03:33 PM
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Originally Posted by Idiot View Post
the speakers just can't handle the power, and are reaching their mechanical limit, which could be shorting out the voice coil, thus shutting down the head unit.
The voice coil wire is insulated. Enamel covered.
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