HELP from the audio gods! - Road Glide Forums
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post #1 of 25 (permalink) Old 03-07-2015, 12:01 PM Thread Starter
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HELP from the audio gods!

I am trying to rap up my winter projects as the weather is slowly turning warmer. Down to the radio.

I have a RF PBR300X4 amp and Kicker 4 ohm speakers. I turn the power on and there is very little volume. I have to turn up the volume almost all the way just to hear anything. What did I do wrong. Please understand that I am NOT very good with vehicle audio!
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post #2 of 25 (permalink) Old 03-07-2015, 12:20 PM
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Where is the gain set on your amp?
Are you using the stock head unit?
How is the amp connected to the head unit?

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post #3 of 25 (permalink) Old 03-07-2015, 12:21 PM
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Check the gain on the amp. Also check all connections to make sure they are 1) good connections and 2) not touching each other somewhere along the wire run.

Do you have a pic of your setup?


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post #4 of 25 (permalink) Old 03-07-2015, 12:47 PM Thread Starter
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Connections are good and not touching. They are currently just twisted together for a test run before I soder everything. I adjusted the gain, it's at 5 but the volume increased very little.
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post #5 of 25 (permalink) Old 03-07-2015, 12:54 PM Thread Starter
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Figured out the volume problem. Now the amp "pops" when I raise the volume. Cool, a new problem!
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post #6 of 25 (permalink) Old 03-07-2015, 03:20 PM
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Originally Posted by Sweetglide View Post
Figured out the volume problem. Now the amp "pops" when I raise the volume. Cool, a new problem!
What was the problem?
Popping is a sign of a bad ground. Is the Amp grounded at the battery ? It should be.

2010 FLTRX , Stage 1, 13" Madstad, Mono tubes, SuperShox, Heritage style bars. Alpine CDE-HD149BT,Soundstream Picasso Nano Series PN4.520 , 5X7 and 6.5 Infinity Kappa speakers
If I have to explain ,you wouldn't under stand anyway.

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post #7 of 25 (permalink) Old 03-07-2015, 06:58 PM
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Mind's grounded to the battery and still pops.
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post #8 of 25 (permalink) Old 03-07-2015, 07:31 PM
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Running the ground all the way back to the battery is a bad idea. The shorter the run for your ground, the better. Mine is grounded at the triple tree and I don't have any noise, hiss or popping. Just make sure it's clean (no paint) and add a little dielectric grease to keep the connection corrosion free.
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post #9 of 25 (permalink) Old 03-07-2015, 07:48 PM
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Originally Posted by BrewCitySinner View Post
Running the ground all the way back to the battery is a bad idea. The shorter the run for your ground, the better. Mine is grounded at the triple tree and I don't have any noise, hiss or popping. Just make sure it's clean (no paint) and add a little dielectric grease to keep the connection corrosion free.
Rockford Fosgate's directions tell you to ground off the battery only.

On a motorcycle, there are no long ground runs.

2010 FLTRX , Stage 1, 13" Madstad, Mono tubes, SuperShox, Heritage style bars. Alpine CDE-HD149BT,Soundstream Picasso Nano Series PN4.520 , 5X7 and 6.5 Infinity Kappa speakers
If I have to explain ,you wouldn't under stand anyway.
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post #10 of 25 (permalink) Old 03-07-2015, 08:44 PM
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check the input voltage with a meter ( factory speaker outs )

adjust the input voltage level on the amp

the pop could be the input signal crossing that threshold

or the power wire or ground loose at the amp terminal or bonding point

I ground to frame also, rode through a few storms last year, had to freshen that up, it got corroded after three years and was popping at higher volumes

grounding to the battery is a rockford fsb, true

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