Vehicle: 2003 Infinity G35 Coupe with Bose sound system
Radio: Pioneer AVH-P3400BH (DVD receiver)

I think I will make the plunge and install a new amplifier to replace the existing Bose amplifier in my 2003 G35 Coupe.

Note: I have no intention of installing a sub-woofer at any point in time. I will continue to use the speaker setup as is currently in the vehicle -- i.e. front door, rear seat side panel, and rear deck speakers.

Here is my question: I have installed a Pioneer AVH-P3400BH radio (double DIN/DD conversion) connected via a PAC ROEM-NIS2 to the vehicle's wiring harness. The Pioneer radio has 4 amplified wires (FL, FR, RL, RR) and also the 4 RCA low level (non-amplified FL, FR, RL, RR) outputs.

1. Can I connect the aftermarket amp via the radio's amplified wires directly to the amp? Or will this blow up the amp? My reason for asking is that I was thinking of using the exisiting audio wires which run from the radio to the amp -- my thinking is that I could avoid having to run dedicated RCA wires to the new amp (if possible).
   ...and...
2. If I run RCA wires from the radio to the amp in the trunk, can I use the existing speaker wires which was previously connected to the factory/OEM Bose amp, and connect them to the new amp instead? This will help me and avoid me having to run dedicated wires from the new amp to each of the speakers (frankly, if I have to run new speaker wires then I doubt I will go the the hassle of installing a new amp)

If I searched the threads correctly, it seems that it is OK to use the existing speaker wires from the amp to the speakers. Is this OK? Is there any significant disadvantage or signal loss if I do this?

Any help and information is appreciated!

Thank you,

Cameron

 

1. It depends on the amp - not all amps accept high-level inputs. So, if you haven't bought anything yet then make sure to get something that accepts high-level inputs. If you already have an amp that doesn't accept high-level inputs, you've got to go with low-level. That means either using the low-level inputs on your PAC-ROEM-NIS2 or running RCA cable(s) from the back of your deck to the amp. Check out this sticky.

High-level inputs look like speaker wire terminals, but in other cases are visible in a harness format.

2. Yes. You don't have to run new speaker wire if you're not into it. It's pretty hassle-free with this car, although I did drill holes to get from the doors into the cabin when I did it.