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Message Forums Car Stereo Message Forums > Head Units > Volume decreases and increases on its own
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thaworldhaswarpedme
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 Volume decreases and increases on its own

Hello Everyone, A little background. I have a 2001 f-150 Supercrew (suicide door style) and have just installed a Kenwood Excelon x794. I did the installation myself. The wiring harness I ordered from E-bay and the dash kit came from Wal-Mart. I used crimping with electric tape for wire connection. I wanted to solder and had even bought heat-shrink tubing for the seal but the night I finally had off to do the work I couldn't find the damn solder! So I crimped. Everything went well with installation ( well, honestly, the kit blocks the top tabs on the back of the dash piece you remove to access the stereo just a bit)and everything sounds great. The i-pod interface is sweet and the speakers (factory for now) sound good although at that point it was 3 in the a.m. so I kept it low volume. The next day on the way to work (or on the way back) I noticed that after about ten minutes of playing( the i-pod) at about 3/4 volume (say 28 out of 40) the speaker volume would lower itself for 5-10 seconds and then rise again. Lower and then rise again. Initially I thought it was that track but then it happened on other songs. It happens in idle and with the truck not running at all but only when you play at 28 or above. And it's not just the i-pod, the stereo (am/fm) does it as well.I am not sure about CD's. Also, this doesn't seem to happen at low volume. What the hell!? Now in the spirit of full disclosure I do have two pairs of RCA cables running from the deck but the ends are covered and definitely not touching. Additionally, when I put the deck in I realized the P.connect wire from the deck needed to be ran as well for the possible addition of an amp later. Having no blue wire with a white stripe I used half an 18-gauge speaker wire (the negative side; is this a big deal?). The end of this wire is also not exposed or touching. All RCAs, the manufactured P.connect and the attached USB are running down the left of the center column and come out behind the curve of the plastic cover (about three inches to the right of the computer interface). Now the question: (Sorry about all the text but I don't want to leave anything out) Is there a possibility that the trucks' factory system or the new deck has a mechanism that is turning down the stereo in an attempt to save speakers or did I just f*** something up? If option 2 seems likely could I get suggestions? Do I need to go back and solder? Seems like when I was sixteen we hooked up stereos in all our buddies' cars and never used solder. We just twisted wires. Is that where i went wrong. I used the metal crimping cylinders with the plastic shells. Could it be the stereo? I am going out now to remove it and check the wiring but honestly that s*** is secure. Eventually I am going to replace the factory with some Kenwood 680cs (6x8s) on an Excelon 4-channel, 1200 watt 600F, bypassing the factory speakers. Will this fix what ails me? Could use some input. Thanks so much.

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New Post 07-07-2010 01:49 AM
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deranged311
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I have the same problem, it's simply because your amplifier draws more power than your charging system has to offer. You coupld probably either get yourself a bigger alternator or a bigger battery to help the situation. If you do go with a new battery I suggest one of those yellow-top batteries. I have heard good things about those!

I didnt take the time to read your entire thread so I didnt see if youy have a capacitor or not but if you dont then try getting one of those

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New Post 09-21-2010 03:45 PM
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deranged311
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I have the same problem, it's simply because your amplifier draws more power than your charging system has to offer. You coupld probably either get yourself a bigger alternator or a bigger battery to help the situation. If you do go with a new battery I suggest one of those yellow-top batteries. I have heard good things about those!

I didnt take the time to read your entire thread so I didnt see if youy have a capacitor or not but if you dont then try getting one of those

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New Post 09-21-2010 03:45 PM
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maryland33
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http://a248.e.akamai.net/pix.crutchfield.com/Manuals/113/113KDCX994.PDF

Here is the manual if you don't have it already.I would reset the radio first and see what happens.Good luck.Oh,and do not go out and spend money on a capacitor like this other guy says,it's not going to help your situation at all!

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New Post 09-25-2010 12:27 PM
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KJM01
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if you used too much solder it will reduce the ability to pass current, i would rather crimp them

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New Post 09-28-2010 11:10 AM
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