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No bass after headunit install

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Old Jul 12, 2016 | 06:32 PM
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Default No bass after headunit install

Recently installed an Alpine head unit using the PAC ROEM-VET1 adapter harness in my Bose equipped 2000 Corvette. The mids and highs are fine, but the door subs are not getting any power at all. Local shop verified that I wired up the adapter properly. Fuses 5 and 28 are good. What else should I check?
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Old Jul 12, 2016 | 07:32 PM
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The PAC ROEM-VET1 has built-in adjustment potentiometers to get the sound just right. I would suggest to begin there.

Regarding bass, here are a couple of suggestions:
1) Make sure the OEM C4 plug is connected to the PAC ROEM-VET1 harness, otherwise you'll have no real bass.
2) Also, make sure your BLUE WHITE from radio is connected to BLUE on the PAC ROEM-VET1. If you wired "blue white" to "blue white" instead, your door subs will not turn on and then no real bass neither.

Last edited by GCG; Jul 12, 2016 at 07:34 PM.
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Old Jul 13, 2016 | 10:35 AM
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Originally Posted by GCG
2) Also, make sure your BLUE WHITE from radio is connected to BLUE on the PAC ROEM-VET1. If you wired "blue white" to "blue white" instead, your door subs will not turn on and then no real bass neither.
Had the same problem/symptoms. This solved it.
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Old Jul 13, 2016 | 02:02 PM
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Originally Posted by GCG
The PAC ROEM-VET1 has built-in adjustment potentiometers to get the sound just right. I would suggest to begin there.

Regarding bass, here are a couple of suggestions:
1) Make sure the OEM C4 plug is connected to the PAC ROEM-VET1 harness, otherwise you'll have no real bass.
2) Also, make sure your BLUE WHITE from radio is connected to BLUE on the PAC ROEM-VET1. If you wired "blue white" to "blue white" instead, your door subs will not turn on and then no real bass neither.
I'm sure that's what I did, thank you!

Is this something that's listed in the instructions that I missed?
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Old Jul 14, 2016 | 11:06 AM
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Oh man. Ill have to check the blue wire also. I have some bass, but not nearly as good as before. Do you have a little bass, or no bass?
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Old Jul 14, 2016 | 01:59 PM
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Originally Posted by CastorTroy
I'm sure that's what I did, thank you!

Is this something that's listed in the instructions that I missed?
It doesn't hurt to double - check
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Old Jul 15, 2016 | 02:10 PM
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Originally Posted by GCG
It doesn't hurt to double - check
I just went through the instructions that came with mine again, and it mentioned nothing about the blue/blue white stuff. However, I see that their website now has another instruction sheet that specifically mentions it.

Everything is good now, thank you!
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Old Jul 15, 2016 | 08:06 PM
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I'm glad everything is fine now

Last edited by GCG; Jul 15, 2016 at 08:07 PM.
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