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Signal wire connection

Which connection on the back of the CD Player is for the signal wire that runs to the power amp

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CD out - left and right. This should be all you have unless it's a CD player/ recorder.

Posted on Jan 11, 2008

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Why do my subwoofers not work when connected to an amplifier that is powered?


The bus connection is actually not an RCA looks very, similar i think if you look at it it will say IN. as far as i remember its an input for like a CD changer. Run a Y splitter on one of the other RCA out put, split the signal and run one to your bass amp. it does not affect the voltage in the RCA signal. i think your amp is trying to send a signal instead of receiving one.

Apr 11, 2017 | Sony CDX-GT510 CD Player

1 Answer

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

1 Answer

How do u turn of a car amp ????


car amps are connected with a positive a negitive and a signal wire called the blue line this is the wire that connects to the cars cd player and only turns the amp on when the deck is activated ( turned on by key) if the signal wire is not conected to the deck then its bypassed to the positive and will run constant make sure the signal wire is connected to the signal output of the deck


best of luck

Sep 21, 2010 | Car Audio & Video

1 Answer

Problems with kenwood kdc-mp2028


The remote from the amp should be connected to the remote (blue wire) or power antena wire from the radio.

May 15, 2009 | Kenwood KDC-MP235 CD Player

2 Answers

What colour are the power wires, are they green & yellow, black, black & grey, blue & grey, red & grey or black & green. I want to connect a cd/radio player but don't know what wires connect to the cd...


JVC KW-AVX800 The black wire is your ground The yellow is your positive 12v constant so connect this to the wire that has 12v when the car is off. The red connect this to the key switch wire meaning the wire will have a 12v signal only when the key is tured to the on position. The blue is for a power antenna the blue/white stripe is if you have external amps this wire goes to the amps remote on The orange/white stripe connect this wire to your cars dimmer switch Happy Wiring

Mar 21, 2009 | JVC KW-AVX800 CD Player

1 Answer

Cd player plays, but no sound comes out of speakers.


first off the amp gets power straight from the battery. the amp is used to power the subs. the subs are suppose to be connected to the amp only( never the speakers).

for the second part you mostlikely killed the wires. you should get some one to look at it and check the wires. thee speakers might need to be re-wired

Jan 31, 2009 | Kenwood KDC-MP238 CD Player

1 Answer

Cd player plays, but no sound comes out of speakers.


Look at the enwood. I bet you have the remote wire hooked to the blue wire insted of the blue/white wire. The blue wire goes dad when you play a cd as it is for a power antenna. The blue/white wire is your amp turn on.

Now, if you do not have a blue/whie and only blue, then obviously that circuit in the radio is bad in whch case your only other option s are either connecting it to an accesory fuse or using a toggle switch connected to power.

Larry T
Winona Lake, IN
http://www.cybersoundsaudio.com/cybersounds/vehiclepics.html

Jan 27, 2009 | Kenwood KDC-MP228 CD Player

1 Answer

Amps wont stay on


try to look at the connection on the back of the cd player and make sure that the amp power wire is connected to the power wire on the wire harness on the back of the cd player and that should work but i only need one amp for a pair of 6by9s and subs try to bridge the speakers all to one amp that should cause it to sta on while in cd mode hope that helps

Dec 26, 2007 | Kenwood KDC-MP435U CD Player

2 Answers

Cut out Alpine 9855


When you say you connected the blue and white wire to the amp power do you mean the remote turn on of the amp and not the terminal/wire marked battery or power? You should not be trying to power your amp with the blue and white wire. This wire is only for sending a signal(+12V) to the amp to turn itself on. the amp should have it own fused wire of appropriate gauge running directly to the batttery. Some more details on the installation would be helpful.

Aug 14, 2007 | Alpine CDA-9885 CD Player

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