Quote:
Originally Posted by Pumxee
Hey!
I got the harness in today. I'm a bit confused about the wiring.
This will be the setup:
A new single mono amp for the new sub and will leave the factory under-seat subs to work from the factory amp.
I've put some copy onto the attached image in which I have also numbered the parts so it's easier for you to reference the part! Would be super helpful if you could shed some light in how I should move forward on this.
Last question: Say I did want to power the front two subs from a new 2 channel amp in the future. What would I need to change say a year from now?
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Number 2 and number 4 are the underseat subs, where number 4 comes from the factory amplifier and number 2 is the wiring to the speakers.
If you use the factory amplifier for the underseat subs, number 4 connects to number 2 and you don't use number 1 (store it safely as you might need it in the future)
If you use an aftermarket amp for the underseat subs, number 1 connects to the speaker output of your aftermarket amplifier and goes into number 2. You leave numer 4 disconnected in that case.
Number 3 has the high level speaker outputs that go into your LC2i, and you can use the 12v power from this one for the LC2i (and also the ground if you so choose).
The amplifier required thicker power and ground cables and should be connected directly to the battery with a properly fused cable, and one of the ground points you find all over the trunk area.
In this case, you can use either of the LC2i low level outputs to connect to your new subwoofer amp. The "main output" provides full range, while the "bass" one already has a low pass filter at 1Khz.
Don't use the "Ignition" cable from the LC2i to switch everything on and off, rather use the LC2i GPO feature which senses a signal in the high level speaker input, and provides a remote out to connect to the amplifier remote in.
If you add a second aftermarket amplifier later for the underseat subs:
- Connect the LC2i "main output" to the aftermarket amp for the underseat subs
- Connect the "bass" output the the amp for your new subwoofer
- Connect both amp remote inputs to the LC2i remote out
- Disconnect 4 from 2, Connect 1 to 2, and feed speaker signal from aftermarket amp for underseat subs into 1.
- Set Low pass filters on both amps correctly
It also helps a lot if you use an aftermarket amp for the underseat subs that has the ability to combine low and high pass filter, so you can isolate a range.
For example:
- Low pass filter on trunk sub at 90hz
- Other amp 80 to 250hz
Depending on your preference of course.