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Old 04-28-2014, 06:51 PM   #1
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Rca bass control knob? Rca splitter? NOOB Please read!

Ok so my gps head unit only has one set of red and white rca outputs for the subwoofers. The factory shaker 500 subs have been connected for now but I'm adding in two 10 inch subs for the trunk, separate amp.

Can I buy 2 rca "y" splitters to allow me to connect both sets of subs? One will go in the red hu output and the other in the white Hu output? Not sure if the signals come out of both.

Also providing that does work, I've heard about an rca bass control knob allowing you to adjust the amp gain on the fly. I can see this being useful for my situation as I'm probably not going to have the factory subs as loud as the aftermarket trunk ones to avoid distortion. Do these bass controls allow you to lower the bass or only add?

I'm a noob at this but eager to learn, any advice would be helpful!
Thanks!

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Old 04-28-2014, 07:08 PM   #2
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Old 04-28-2014, 07:48 PM   #3
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Old 04-28-2014, 10:22 PM   #4
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I'm not sure how you would tune your factory amps but yes you can use a y adapter. When using the bass boost knob put it in the middle and then tune your amp that way you can turn it up or down. Also some aftermarket amps have a rca output as well so you might not need a Y. Idk how your system is wired but I ditched my 460 and ran separate wires and have a sound processor before the amp

Hopefully some one with a wee bit more knowledge chimes in
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Old 04-28-2014, 10:28 PM   #5
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Originally Posted by Joser714 View Post
I'm not sure how you would tune your factory amps but yes you can use a y adapter. When using the bass boost knob put it in the middle and then tune your amp that way you can turn it up or down. Also some aftermarket amps have a rca output as well so you might not need a Y. Idk how your system is wired but I ditched my 460 and ran separate wires and have a sound processor before the amp

Hopefully some one with a wee bit more knowledge chimes in
Thanks for the reply! My amp does not have an adjustment for gain so there's a gain remote adjuster you can get online for cheap that connects between your head unit and amp. Will 2 y splitters do the trick? Or should I use the amp output from the trunk and run it back to the factory amp? Thanks again!

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Old 04-28-2014, 10:30 PM   #6
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Bass gain

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Old 04-28-2014, 10:52 PM   #7
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The output from your amp but then you'll be lowering both amps not just one. In all honesty I say ditch the factory subs
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Old 04-28-2014, 10:55 PM   #8
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If I can adjust both sets individually with 2 splitters and 2 control knobs, I can make the factory door subs pretty quiet don't you think? Then just blast the trunk subs. Why do you suggest leaving them unhooked?

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Old 04-28-2014, 11:23 PM   #9
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I'm sure you're aftermarket subs are more than enough and you don't have to go through so much of a hassle. I only got two tens in a convertible and it's more than an enough
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