Question about Sony XM-1252GTR Car Audio Amplifier

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Car radio wiring

Power wires are connected but radio will not turn on

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  • tahitiman15 Nov 19, 2008

    yes everything is hooked up correctly

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Do you have the amp power wire connected to the power wires for the radio

Posted on Nov 18, 2008

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How to install jensen 40w+40w a-80


I have one of these new, in the box, with no instructions.

Specifications:
Power Output: 40W/Chan Maximum, 18W/Chan RMS
(20hz-20khz into 4 ohms at less than 1% THD)
Freq. Responce: 20hz-30khz, +/-3dB
Signal to noise ratio: 80dB, A-weighted
Input Sensitivity:
Low Level, 100-500 mV
High Level, 1-5v
Input Impedence:
Low Level, 10k ohms
High Level, 27 ohms
Load Impedence: 4-8 ohms allowable (4-8 ohm speakers)
Power Requirement: 14.4v DC (10.8-15.6 allowable)

As you can see the RMS wattage output of these units is only about 18W maximum.

I am planning on using the amp I have on a low power factory car radio. A low power factory radio output should be somewhere between 6-12 watts rms/channel. I will be using the "High Level" inputs for this. DO NOT connect a radio with a higher output power. If your radio says "High Power", 25W/channel, etc, do not connect to this amp. (exception: you can use the "line out" connectors, if so equipped, See Below). I don't have the connector for the high level input so i don't know what I'll do to hook up to it. I'll probably just run wires out of the amp, in lieu of the connector.

The "Low Level" inputs are for an unamplified, line level signal ("line out" connection of a radio, portable CD player, etc). Do Not connect a greatly amplified signal to these connections.

I don't know much about the "Input Sensitivity" control (pot). I'll be leaving it on "Low" for my initial test.

The grey wires are the right speaker wires and the white wires are the left speaker wires. The grey wire with a black tracer mark is the right speaker positive (+) wire. The white wire with a black tracer is the left speaker positive (+) wire.

The blue/white wire is for attachment to your radio's "Auto Ant" (power antenna) connection (usually a orange wire, I said USUALLY). If you have a power antenna on your car, simply splice into the wire running from your radio to the antenna. This blue/white wire activates a relay in the amp which, in turn, completes the circuit through the yellow (+) power wire (See Below). - Alternative 1: You could run this wire directly to your battery with a switch to turn the amp on. You would need to place an in-line fuse of 2amp. - Alternative 2: You could connect this wire to the accessory fuse in your fuse box. If this is done, again, attach a 2amp in-line fuse for extra protection. (Note: if attached to your fuse box accessory fuse, the amp will be on even if you're not using the radio. You could have a switch here also). These are just suggestions. The most common way to connect the blue/white wire is the "Auto Antenna" wire of your radio.

The large black wire is main Ground (-) for the amp. The large yellow wire is Positive (+) power to the amp. Ideally, these should be connected straight to your battery's (+) and (-) terminals. The yellow wire on your amp should have an integral in-line fuse holder with a 7amp fuse. If not, add one. Of course, the black ground wire could simply be attached under a screw, into the body of the vehicle.

Hope this helps !

Aug 12, 2012 | Jensen Car Audio & Video

1 Answer

How to instal a kac-x401m car audio amplifier


12v- red wire runs to your battery, recommend 4ga
remote - blue wire run to a accessory wire or a remote turn on at the radio
ground - black wire connect to bare metal, recommend same size wire as the power.

Rca - connect to head unit or a Hi-level converter if you have a stock radio.

speaker wire- connect to your sub 2ohm or 4ohm depending on your setup.

Oct 23, 2010 | Kenwood KAC-X401M Car Audio Amplifier

2 Answers

My amp stay on when the car cuts off. the only way it turns off it i take the fuse out the power line or if i disconnect the remote wire. I have check the remote wire behind the head unit it everything is...


connect the red wire of the amp to a car battery (+). the black to a car metal and the remote cable to the blue wire in radio. when you turn on the radio the amp turn of--when you turn off the radio the amp turn off.

Apr 26, 2010 | Lanzar Vibe 1200D Car Audio Amplifier

1 Answer

Amp wont produce sound when car is on only when car is off it works


Ok do this little experiment when you turn on the car again disconnect the amp turn on wire from the amp. then get a small wire then strip back both ends with a wire stripper only exposing enough for the copper wire to show. then touch one end to the 12volt on the amp and touch the other end to the amp turn on terminal. The amp should come on and the sound should come on. Your problem then is your amp turn on connection is wrong and may be connected to the power antenna wire which may not be able to handle the load and shuts off so I suggest connecting it to the ignition wire so whenever the radio is on that wire will send 12 volts to the amp to turn it on. Sometimes On the back of the radio harness there are two blue wires. One is Blue and the other is blue white. Always connect it to the Blue white cause thats the amp turn on wire. The solid blue wire is the power antennna wire. Also possible the blue/white wire is sending a weak 12volt signal so just connect it to the red wire which is the ignition wire. Dont connect it to the yellow wire because thats constant 12 volt. If you connect it there the amp will always be on and drain your car battery and you might hear big loud buzz sound when you turn off your car.

Apr 07, 2010 | American Pro VS1405 Car Audio Amplifier

1 Answer

Where does yhe remote wire on my amp connect to.


The is a wire that comes from your radio. This is the wire that tells the amp to switch on when the radio is on and to switch of when the radio is turned off. The wire on the radio would be labeled "remote" or "automatic ant." (antenna).

Oct 17, 2009 | Legacy 2400W Mono Block MOSFET Digital...

2 Answers

Where does the rem wire plug into


It plugs into the power antenna cord on your radio if your radio does not have a dedicated remote cord. The remote switch is so that you amp can detect when your radio is on and turn on too, or is off when your radio is off so as not to drain the battery

Sep 23, 2009 | Eclipse (XA1000) Car Audio Amplifier

2 Answers

Car stereo installatio(aftermarket)


If you used a wire harness to connect with the factory setup, try running the power wire to your fusebox. Find a fuse that is only live when the car is running and insert the wire with the fuse.

Apr 13, 2008 | AudioBahn A2801Q Car Audio Amplifier

1 Answer

No sound from the amp


Make sure that your amp turn on wire is connected from behind the radio to your amplifier. Usually the turn on wire is a blue wire but it can be any. This blue wire connects from the blue/white wire behind the radio to your small connection turn on connector on the amps power connections. You have 3 ( 12V , Ground, Switch or the smallest connector)

 

Also check the amplifiers fuses, and the main powerline fuse as well. If this doesnt work then write back to me.

Oct 10, 2007 | Alpine MRD-M1005 Car Audio Amplifier

1 Answer

Remote wire hook up


The Remote wire should connect to the remote turn on lead from you radio(most aftermarket radios use a blue and white or a blue wire for the remote turn on). This wire will send a 12v signal to the amp from the radio when the radio is turned on. You can disconnect the remote turn on lead from the amp and jump a wire from the terminal marked battery to the remote turn on terminal just to see if the amp powers up. Do not leave it this way however because your amp will not shut off and your battery will go dead.

Aug 19, 2007 | Rockford Fosgate Punch 301S Car Audio...

1 Answer

Hooked my punch Punch P450.4 up to speakers and ran rca cables to front and it wont work


Hi Jon,  you need to hook the Remote wire up to the Radios  Blue remote wire.  The car battery power stays on all the time.  The blue Remote wire watches to see when the radio turns on, and signal the amp to turn on as well.

Dec 12, 2006 | Rockford Fosgate Punch P450.4 60W x 4 Car...

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