So, I have replaced the rear subs with 6.5 Memphis audio subs, and a buddy of mine gave me two of the old kicker 100w amps, and I was wondering if I could wire one amp per speaker off of the factory wiring harness?
Obviously note plug and play. As long as your amp has line-in inputs, I would assume you could use the signal from the original amp wiring but would most likely need to run separate power wire. I don’t know if the stock amp turns on by sensing signal coming from the speaker input or has a separate amp on wire. If it does, you can use that for your remote signal. I have not found the original amp wiring diagram yet, so take this for what it’s worth. In audio most things are pretty similar.
I am curious to know how the new speakers sound using the factory amp though?
2005 MBM A4
Kooks stepped long tube & off road pipes
1-piece DSS driveshaft
Cold Case radiator
I understand that it's not plug and play, and I really don't know anything about audio I had read a previous thread where they said it was a good amp to use for a little extra bass. As for the speakers on the factory amp they sound good.
I hadn't done it before because I normally go for full replacement of the system along with rewiring, etc. In the case that you are not looking to add a new head unit in which you use pre-amp outputs you can go through the existing speaker signal(s).
Google speaker level inputs (high level inputs). There are ways to either patch in a unit such as a JL Audio Fix-82 (or similar) or many amps can wire in the speaker level inputs directly.
Should I worry about to much draw on the factory positive burning the car to the ground?
The amp should have separate inputs for signal and power/ground. The converter that gixxer is talking about takes the signal from your factory speakers and tuns it into something your amp can understand (factory speaker wire->conversion box->RCA->line in on amp)
Power wire to the amp is different, this is a cable run from your battery to your amp. 2 100 watt amps are too much for any factory wiring in the trunk, run a new 8 gauge wire (fused close to the battery) from the battery through the firewall to the trunk,and then split it off using a distribution block to run both amps.
Make sure when setting up the amps to use the same gain setting on both.
Be sure to install a correctly sized fuse near the battery when running the power wire. Without that fuse, you really can burn the car to the ground.
The other question you need to answer is what the specifications of the amps and subs are. The power output of the amp is dependent on the impedance in ohms of the speakers. The 100 watt rating is likely for a 2-ohm speaker. If you connect the same amp to a 4 ohm speaker, the output drops by half to 50 watts. There are various ways to connect the subs in order to address the impedance. If the amps are two channel, then the 100 watt power is obtained by bridging the load so that one speaker takes the entire power of both channels.
04 Pontiac GTO
400+ RWHP / 400+ RWTQ of Magnacharged goodness --- Flowmaster cat-back exhaust
Pedders Track II with Hotchkis swaybars --- 06 GTO brakes with stainless lines and Hawk pads
10-speaker, 1200-watt custom sound system
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