No factory sub

[Jerry Smith]

Hey yall, so my factory system does not have a sub however it has a amp. Hooking up a sub and amp what speaker wires do I tap into with my lc2i? Thanks in advance.

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[Old_Slapper]

Hello Jerry.
I have two questions:

1. What vehicle are you referring to?
2. Is it a factory amp?

 

[Jerry Smith]

2018 maserati ghibli and yes there is a factory amp.

 

[RobGMN Premium Member]

Generally off the rear speaker wires. That way, you can use the fader as a pseudo "sub volume control" (at the loss of rear fill if you "turn the sub down" by fading toward the front).

 

[Jerry Smith]

So I can tap into a full signal? It don't have to be a signal from a sub?

 

[RobGMN Premium Member]

So I can tap into a full signal? It don't have to be a signal from a sub?

The LOC turns the high-level signal into a line-level, and the sub amp should have a crossover to filter out the high frequencies. A good starting point for the crossover will be 80Hz, Set the amp gain at 50%, and then increase or decrease so it complements the rest of the speakers. Keep the bass control flat on your head unit, or maybe even down a notch, to limit the bass going to your mains.

 

[Jerry Smith]

The LOC turns the high-level signal into a line-level, and the sub amp should have a crossover to filter out the high frequencies. A good starting point for the crossover will be 80Hz, Set the amp gain at 50%, and then increase or decrease so it complements the rest of the speakers. Keep the bass control flat on your head unit, or maybe even down a notch, to limit the bass going to your mains.

Awesome advice thank you.