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A dumb sound quality question(maybe)

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Old 06-29-2012, 08:13 AM
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Default A dumb sound quality question(maybe)

So yesterday I installed the new alpine ktp-445U amp, with a pac aoem-24 harness. I followed the instructions in that "small 4 channel amp" thread.

It sounds awesome!!! Bass is deeper, highs are cleaner, everything sounds great on the radio, and cd.

The aux input however seems to have a slight crackle sometimes. Its only on certain songs it seems. Normally when a guitar chord rings out(I'm a metal head). Is this a problem with the aux input? My ipod?(it is an older one)

Its just weird that everything else sounds awesome, except the aux input
Old 06-29-2012, 10:36 AM
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Originally Posted by mbullock
So yesterday I installed the new alpine ktp-445U amp, with a pac aoem-24 harness. I followed the instructions in that "small 4 channel amp" thread.

It sounds awesome!!! Bass is deeper, highs are cleaner, everything sounds great on the radio, and cd.

The aux input however seems to have a slight crackle sometimes. Its only on certain songs it seems. Normally when a guitar chord rings out(I'm a metal head). Is this a problem with the aux input? My ipod?(it is an older one)

Its just weird that everything else sounds awesome, except the aux input
Check the EQ settings on your ipod.
Old 06-29-2012, 10:51 AM
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Originally Posted by GATORB8

Check the EQ settings on your ipod.
That's what I figured it was. It sounds best on the "jazz" EQ. Least amout of crackling. But its still there...wondering if the new ipods have a "custom" EQ. Mine is the older 30gb one.
Old 06-29-2012, 11:58 AM
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Originally Posted by mbullock
That's what I figured it was. It sounds best on the "jazz" EQ. Least amout of crackling. But its still there...wondering if the new ipods have a "custom" EQ. Mine is the older 30gb one.
Does it help to lower the ipod volume and increase it at the head unit? The amp on the ipod will distort just like the amp on the head unit when it's turned up.
Old 06-29-2012, 12:03 PM
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Originally Posted by GATORB8

Does it help to lower the ipod volume and increase it at the head unit? The amp on the ipod will distort just like the amp on the head unit when it's turned up.
Yes, that does help. But its still there. Know anything about this "clean sweep" thing everyones talking about? Would that help? Hahaha maybe a new ipod??
Old 06-29-2012, 12:05 PM
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Does it do it with headphones?
Old 06-29-2012, 12:08 PM
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Originally Posted by GATORB8
Does it do it with headphones?
Don't know why I didn't think of that!!!! But no it doesn't!!!
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Old 06-29-2012, 01:02 PM
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You may want to try using your phone or another ipod and see if it does the same thing.
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Old 06-29-2012, 01:06 PM
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Originally Posted by GATORB8
You may want to try using your phone or another ipod and see if it does the same thing.
We think alike, you and I! Haha! I tried my phone about 10 minutes ago. No crackle. I'm gonna try my wifes ipod tonight, she has the newer ipod touch.
Old 06-29-2012, 02:28 PM
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Aux as in your using the USB or 3.5mm headphone out? What part of MA you from? I grew up in Quincy.


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