Wiring a subwoofer in a 2012 civic coupe
Run the 12v power wire (usually the longest wire in the kit, mostly red, typically ranges from 8 gauge to 0 gauge) from the battery through the firewall and then to the amp. You can find a hole somewhere in the bottom right of the firewall. Don't connect the power wire to the battery or the amp just yet. Find a solid metal ground somewhere near the amplifier. You'll need to stay within 2-3 feet of the amplifier to maintain the best ground connection. A way you can do this is pull up the carpet and scrape the metal until it is bare metal with no paint left on it. If the amplifier is to be mounted in the trunk, many times bolts from the suspension can be found directly above one of the rear wheels. These suspension components usually bolt directly to the frame, making them an ideal grounding point.
Pull the aftermarket CD player out of the dash. There is a blue wire with a white stripe hanging out of the back of the deck known as the remote wire. The remote wire is a simple 12v signal that the cd player outputs to tell the amplifier to turn on. Take your remote wire that came in your amp kit and splice/solder it onto that blue-whitestriped wire and run it through the dash and then along the door jam. While you have the CD player removed, plug the RCA white and red plugs into the back of the deck where it says "Subwoofer Output." If your cd player does not have a "Subwoofer Output", or if you are using a stock cd player, you will need a device called an inline converter. It's a small box that has 4 input wires and the 2 necessary RCA output that will run to the amplifier. It takes the high level speaker voltage and drops it to a low level signal the amplifier can process. The 4 input wires can be connected to the rear speakers (+ and - for left and right)
Run all the wires straight back to the amplifier.you should run the power and remote control down the right as factory speaker wires run down the left due to fire risks if the power cable shorts out and you have your speaker cables down the same side it will blow your headdeck (cd player). RCA cables should be run down the center of the car as RCA cables can pick up sounds from wire looms and also air con vents power wires. se Speaker Wire to connect subwoofers to amplifier. Gauge isn't extremly important here, as long as the wire is copper, the resistance-per-foot is in the milliohm range, meaning there will be miniscule, if any, voltage drop across the wire.
Put a fuse into 12v wire in the engine bay no more than 0.5m away from battery. If your amp kit came with an "inline fuse holder", you'll want to find a nice location to mount it in your engine bay. Once it's secure, cut a length of the power wire to reach the fuse, and connect it to one side of the fuse holder. The other side (the side you just cut) is stripped and connected to the other side of the fuse holder.
Connect the power wire to your battery. There's nice ring connectors and even new battery terminals you can buy (and sometimes come with the amp kit), that make the battery connection much more solid, and looks better too. Lastly, connect the battery cable to the amplifier. Then under the hood clamp the wire down to the battery. A word of warning, sometimes you'll see a nice big spark the first time you touch the power wire to the battery. Don't worry about it! This is the amplifier charging the huge capacitors contained inside.
Do not turn up the volume or gain too high or you may produce clipping in the subwoofers. This is where the output of the amplifier peaks and stays there for a split-second. This is bad for the subwoofer because it holds the cone (the big circle part!) in it's fully extended or fully compressed state for the duration of the clip. Not only are you not producing a single decibel of sound during this microsecond, but you're also working the voice coil very hard and damaging it. A good rule for beginners is to play a nice loud song of your genre at your cd players 3/4 volume setting. Now, with the gain at zero, turn it up until it's obvious that it isn't getting any louder. The gain knob isn't a "volume" knob by any means. A gain knob should usually never be at it's full position.
Jun 01, 2012 |
Car Audio & Video