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New speakers, adding sub

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Old Jun 23, 2025 | 02:39 PM
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Default New speakers, adding sub

Hello all, I’m replacing my factory speakers all around in my 2002 trans am hatch with monsoon system 10speaker. During my replacement I want to add a subwoofer, I want to make sure I have the correct understanding of setup so I don’t mess up my factory system.

I will be using a line converter to pickup the signal from existing speakers, is it best to actually wire the converter from the rear seat speakers or the ones in the hatch ?

The converter will go to a separate amp im also adding only to power the subwoofer, this amp I will wire power from battery. Was a lot of info in the sticky just wanna make sure I understood it

Last edited by 02ws6kid; Jun 24, 2025 at 12:42 PM.
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Old Jun 27, 2025 | 01:24 PM
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Actually, assuming you're keeping most of the Monsoon setup and just replacing speakers, it would be best to splice your LOC into the Monsoon amp input wires for one of the rear channels. There are two reasons for this - you're starting with lower power so there's less likelihood of distortion and you're using unfiltered audio signal (the output of the amp to the speakers is filtered in variable ways depending on speaker location).
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Old Jun 27, 2025 | 03:30 PM
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Originally Posted by WhiteBird00
Actually, assuming you're keeping most of the Monsoon setup and just replacing speakers, it would be best to splice your LOC into the Monsoon amp input wires for one of the rear channels. There are two reasons for this - you're starting with lower power so there's less likelihood of distortion and you're using unfiltered audio signal (the output of the amp to the speakers is filtered in variable ways depending on speaker location).
Hey thanks for your reply, that makes sense to me and yes I do want to keep the monsoon system. I’m only replacing speakers and adding an amp to power only the added subwoofer.

So I want to match up my LOC with the rear inputs on the amp, also my LOC has 2 ground wires can they share the same ground ?
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Old Jul 2, 2025 | 01:10 PM
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As long as both grounds are electrical, rather than audio signal, then yes they can share the same chassis ground.
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Old Jul 9, 2025 | 01:08 PM
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Originally Posted by WhiteBird00
As long as both grounds are electrical, rather than audio signal, then yes they can share the same chassis ground.
I’m going to assume they are not audio signal since it is only labeled ground. Something else I ran into now is would a ring terminal be a good connection on the side post battery ? I feel like it’s not, the amp I’m adding is only 360w, and I have 4g wire
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Old Jul 11, 2025 | 01:17 PM
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i dont see why a ring terminal wouldn't be acceptable for the amp off of the battery.
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Old Jul 11, 2025 | 01:25 PM
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There is no need to run your ground all the way to the battery... assuming your amp is not under the hood . Any solid chassis/body ground that is convenient to the amp location is quite sufficient.
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