Question about Infinity 475A Car Audio Amplifier

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Both Positive and Negative Speaker Wires Mixed With Truck On

My sons truck was running when he crossed the two speaker wires. The amp went into protect mode and went back to regular. Fuses are fine and so are the cables but you can hear engine noise when started. Whats wrong?

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Posted on Dec 12, 2008

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Wire 2 sub 4ohm

I am assuming these are subs, you didnt say, but that is my guess. do you want bass, or do you want to take it easy on your amp? do you have a terminal cup on your sub box, or just wires going into the box to the speakers? take it easy route: wire positive from amp to positive of one speaker, negative of amp to negative of the other speaker, with a jumper wire connecting the negative of the first speaker, to the positive of the second.
more bass route: run seperate positive and negative wires to each speaker, making sure to maintain proper polarity.

Oct 21, 2013 | Jl Audio 500/1 Car Audio Amplifier

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Jl audio g1700

this is a mono block amplifier ,both positives are the same inside the amp and both negatives are the same ,there is 4 terminals to make it easier to wire 2 speakers . Use either positive and either negative ,with this speaker ,inside the box you can wire both positives together and negatives together (parrallel) this should be 3 ohms and the amp should run smoothly ,maybe a little warm but that amp can take it .

May 07, 2012 | Jl Audio G1700 Car Amp

1 Answer

How do I connect my nitro 1000 watt amp to get thr most bass .i have two 15 vx kickers

If you have the Nitro bmw-482 running it at 2 ohms will give you the max output (its not 1ohm stable so don't run it that way). First run your two dvc speakers parallel (run both negative out puts together and both positive out puts together on each speaker). After this you should have 1 positive and 1 negative wire from each speaker (4 wires altogehter). This will give you a 1 ohm load which your amp can't handle, so you have to run the 4 wires in series to create a 2 ohm load. Now take the positive wire from 1 speaker and connect it to the negative wire from the opposite speaker. Thats how to run in series. Now you should have 1 positive wire from 1 speaker and 1 negative wire from the other speaker which is 2 ohm load. Your amp sould be bridgeable, so connect the positive wire into the correct terminal of your amp and the negative wire into the correct terminal of your amp according to where to bridge it (positive into left positive, negative into right negative) . That will give you a 2 ohm load bridged which is the most power you can get out of your amp 300 watts. Medium quality amps are over rated so you will never acheive the 1000 watts as advertised.

Dec 01, 2011 | Car Audio & Video

1 Answer

I have a pioneergm-d8500m amp and it stopped working and the green led just flashes.. i bought a new amp to replace it and it just does the same thing.. what is going on to cause this

crossed speaker wires or loose strands creating a short circuit, improper speaker ohmage or a blown speaker.

verify that you dont have any positive strands coming in contact with negative strands/terminals, the amp case, the speaker frame, or any metal part of the car chassis.

verify that you only have a 2 ohm load connected to the amp. most car speakers are 4 ohm (siginfied by the greek letter "omega" on the back of the spoeaker magnet, or in the speaker specifications), but some are 2 ohm and/or 2 ohm x2 voice coils per speaker. 2x2 ohm coils/speakers would produce a 1 ohm load, which would cause the amp to overload, and go into "protect" mode. to achieve a safe load, you need to use 1x4 ohm speaker, 2x4 ohm speakers or a dual voice coil speaker with 4 ohms per coil x2 voice coils, wired in parallel.

you can also achieve 2 ohms with 2 speakers with 2x2 ohm voice coils apiece (that is, 2 speakers, each with 2 ohm voice coils apiece, 2 speakers with 4 voice coils altogether of 2 ohms apiece) by wiring the two coils per speaker in SERIES, and then wiring the two speakers circuits in PARALLEL. wiring the coils in series means connecting the positive lead of one coil to the amp positive, then connecting the same coils negative to the positive of the second coil, and finally connecting the negative from the second coil back to the amp negative terminal. if you wire both dual voice coil speakers in series, and then connect both series circuits back to the amps positive/engative, than you have the coils in series, and the speakers in parallel- achieving an overall 2 ohm load from 4 total voice coils between 2 speakers.

if you need a better explaination, comment back with your exact speaker combination (brand and model # of speakers + number of speakers), and i will provide a more specific description with your exact speaker set-up in mind.

Mar 27, 2011 | Pioneer Gm-d8500m Car Amp

1 Answer

Hi,I am Udo from Germany. Please execuse my bad English because I have learn it at school 25 ago. My problem is: I have a Ultimate Sound T3 Series 4070 Car Audio Amplifier with 4 channel and I want play...

Run a wire from the negative side of one speaker to the positive side of the other speaker. Then plug the remaining two wires into the amp. The positive wire coming from the first speaker goes to the positive on the amp on the first channel. Then run the second wire coming from the negative side of the second speaker to the negative side of the second channel on the amp. There for giving you the max power of your amp to your speakers. Hope this was helpful!!!

Jan 31, 2011 | Ultimate Sound T3 Series 4320 Car Audio...

1 Answer

Wiring diagram ford f350 04 for radio need color codes

2004 Ford F350 Truck Car Radio Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Light Green/Pink
Car Radio Accessory Switched 12v+ Wire: Black/Violet
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Light Blue/Red
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: Blue
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Light Blue/White
Left Front Speaker Negative Wire (-): Orange/Light Green
Right Front Speaker Positive Wire (+): Dark Green
Right Front Speaker Negative Wire (-): White/Light Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Tan/Yellow
Left Rear Speaker Negative Wire (-): Gray/Light Blue
Right Rear Speaker Positive Wire (+): Brown/Pink
Right Rear Speaker Negative Wire (-): Orange/Red

Jan 04, 2010 | Car Audio & Video

1 Answer

How to bridge the amp

How many channels does the amp have? 1,2,3,4? im going to assume its only a 2 channel amp when I say, there should be a 2 positive and negative channels, do your speaker wires off of 1 positive and 1 negative of the channels to the speaker.

Dec 11, 2009 | Behringer EUROPOWER EP1500 Car Audio...

1 Answer

Amp worked then went on protection..

Make sure your speakers ohm levels are compatible with the amplifier. The amp is shutting itself off to protect from damage. Your amp may be setup to work with 8 ohm speakers and if you are using a 2 ohm sub-woofer it will stress out the amplifier. Some factory speakers are rated at 3 or 2 ohms. And if you have more than one speaker hooked up per channel that can stress out the amplifier. Also make sure all the speakers you are using are rated at the same ohms. Make sure all the speakers are wired the right way...+ to + and - to -. If some speakers are not wired with the positive speaker wires to the positive connection on the speaker and negative the same this can cause problems with the amp. Also make sure your power wire to the amp is large enough gauge for the amplifiers power requirements. Otherwise the amplifier might have an internal short or just cannot output the wattage needed for your system.

Sep 21, 2009 | Car Audio & Video

1 Answer

Need information

This plug configuration should be the same as the old autotek. The wires on the sides of the remote are the positive speaker wires. With the amp orientated so that the 3 wires are on top, the wire left of the remote on the amp plug should be the left positive. The one directly under it is the negative for that channel. The ones to the right are the right channel (negative on bottom again).

You can confirm left/right after you get the amp powered up. Drive signal into one RCA jack at a time and check for output on the corresponding speaker wires.

Apr 12, 2008 | Car Audio & Video

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