2003 eclipse, 2 alpine amps, 2 subs

hi guys !! i am new to this forum and looking for some help to  upgrade my car system ! i have a 2003 mitsubishi eclipse which has a premium infinity sound system !! and i want to add 2 alpine amp and 2 subs (1 for speaker,and another for sub) and keep the head infinty unit (which have 6 cd changer) so i can control all the amp  but  i dont how  to hook up the wires and all the harness needed !!! so give me some advices and tools that i need to get !!! ( please give me  a little bit detail cause i am a liitle bit slow)   thanks for your time guys !!

Well, I am no professional but I think I can help you out. The infinity system is most likely amplified from the factory, meaning the speakers already have an amplifier driving them. You will have to get an amplifier bypass harness from Metra or another brand. Then, you will most likely have to take the new speaker leads from your head-unit and install a line-output converter. It will take the speaker leads and turn them into a RCA output. Then, run the RCA's to the amp and voila, you have a signal to the amplifier. For the subwoofer, just split the rear rca's to the subwoofer amp too. Also, use a good, high quality Line output converter, or it will add noise to your RCA's. JacobThere are 3 kinds of people in the world, those who can count and those who can't

Why two amps and two subs??? The sound from the sub is all in the BOX BOX BOX!! In that eclipse it is easy to get loud...one 12 in the right box will beat pretty hard.

Most amplifiers have a high level input built into them already. If the Alpine has such a feature, then just take the output from the Infinity amplifier and wire it into the high level input connector for the Alipne amplifier. As for the speaker's and the Alpine amplifier, what you have to do is find the output for each speaker at the OEM Infinity amp and cut it away from the OEM amp and wire it to the output of the Alpine amp. If the Alpine amp has a passthrough set of RCA's , then you can use this for the sub amp. Use the OEM amp turn on or the switched ignition to turn on the amplifiers.Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

 i am appreciated your advices guys !! i do believe those  will help me to figure out what i should start with !!! specially thanks to Velocity Motorsports !! i definatelly need some more help during doing my upgrading ! thanks aagin !huy, nguyen

whats up guys !! just a question about capacitor  amp power supply !!! so with an alpine  800w MRP-M850 and  50w *5  MRA - F350 theather amplifier ,what capacitor i should use? 4 farad will be ok ?***admin edit: duplicate topics merged*** huy, nguyen

hey guy !! do i still have to use a fuse holder eventhough i will have  Digital Read-out Distribution Block  for the 2 amplifiers?   and if i want to put another battery into my car! do i have to use a fuse between the connection !! thank for your tiem guys !huy, nguyen

If you are adding a 4 channel to your factory infinity speakers you will most definitely blow them out. The factory infinity system speakers run at 2 ohms and each have a separate channel at the amp. The amp is located under the front passenger seat. I would recommend replacing the front components and 6x9's (leave the center unplugged) now, since you will have to replace them very soon anyways. You will need the Metra 70-7003 amp integration harness to use the factory HU with the aftermarket amps. I too have a third generation Eclipse. If you need any other info about any other part of the car, go over to www.club3g.com! We have a great community that is willing to help with every aspect!