First off i have a spare amp...and have no money right now for a new sub. It's a small amp to begin with: 300watts x1 @ 4-ohms rms, 75watts x 2 @ 4-ohms rms, and 15 watts x2 @ 2-ohms rms. For the time being i want to wire my front speakers to the amp. They are just the stock pioneer speakers. Here are my questions now. Do i splice the amp wires with the stock speaker wires running from the stereo? I'm almost positive i don't but want to make sure. Other question is that these stock speakers are rated at 6-ohms. My amp handles 2-4 ohms, meaning it can handle more than 4, but not less than 2...right? Just want to make sure. You don't think this will blow my speakers do you? Thanks.

 

More than likely, your amp will perform just fine at 6 ohms. I do have one question regarding the amplifier, though. Is it claiming 75w X 2 @ 4ohm to be RMS or Peak?
For simple analysis, lets assume RMS. An amplifier that is designed to run 75w RMS X 2 @4ohm will produce approximately 56w RMS X 2 @ 6ohm.
As long as you are careful with your gain control, this shouldn't be too much for the stock speakers.
As for installation, you will need either "High inputs" on the amplifier, which are uncommon, or a Line Output Converter to take the signal from the speaker leads off the HU and convert them to an RCA output, which would then lead to the amplifier via a stretch of RCA cable.

 

Thanks for the tips. You may be thinking i have the stock headunit, however its an aftermarket one so i don't see why i would need the Line Output Converter. I already have RCA's running back to the amp, so from there i should just run speaker wire to my speakers and detach the wiring harness and leave it sitting there? My amp also has a "high input" on it. Not sure what that is exactly. I've got plenty experience running all the wires for subs but never done a door speaker setup.

 

High Inputs just allow the amplifier to take input from speaker wires if no RCAs are available. They are uncommon simply because they are not practical, due to amplifying an already amplified signal. This practice would dramatically increase noise simply because you would be amplifying noise created by the original amplification of the HU.
Since you are using an aftermarket HU that has RCA connections available, you can skip the LOCs.
Running wires from an amplifier to door speakers is pretty straightforward. You want to use reasonable wire with as few junctions as possible to keep the resistance at a minimum. This is typically why I choose to run my own wire from an amp to the speakers/X-Overs and bypass the stock wiring altogether. Doing so just guarantees I have less possibility for noise induction and/or future problems due to junction failures from broken connectors or fraying electrical tape/heatshrink leading to exposed wires. I also am keeping the resistance of the speaker wire at an absolute minimum by utilizing better quality higher gauge wire over the puny stock wiring.
If you choose to splice into the stock wiring to avoid running your own wire through the door grommet (which can be quite a PITA sometimes!), just be sure to keep the connections as secure as possible and ensure they are all insulated against any possibility of future snags or exposure.
If you're familiar with wiring up subs, you won't have any problems dealing with the door speakers. It'll be a piece of cake.

 

BINGO! thats the answer i was looking for right there. thanks for the help.