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My amp in my truck is screwed up somehow when i hook up the sub it will start hitting at a constant rate of about twice a second and i am not sure what it is

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Try disconnecting the RCA cables from the amp and see if this still happens. If it does, check to see that the constant (battery) and negative (chassis ground) are connected properly. If you have a poor ground for the amplifier, this may happen. If that is the case, then try and ground to a clean (bare metal) spot in the vehicle with as short a ground lead as possible.

Posted on Aug 11, 2008

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2 Answers

Kicker 12L5 blew from a kicker zx750.1


MY BEST GUESS FROM WHAT YOU HAVE SAID IS THAT THE BOX WAS TO SMALL. BUT YOU ARE OVERPOWERING THE SUB RUNNING IT AT 2 OHMS ON A 750 WATT AMP WITH A SUB THAT IS ONLY RATED FOR 600. NO MATTER HOW FAR YOU TURN YOUR SETTINGS DOWN, YOUR STILL PUSHING TO MUCH POWER FOR THE SUB TO HANDLE. IT IS ONLY RATED 600 WATTS FOR A REASON. ESPECIALLY IF YOU LISTEN TO MUSIC THAT HAS A REAL LOW END AND THEN A HARD HIT. REMEMBER A HARD HIT WILL SPIKE YOUR AMPS OUTPUT THEREFORE PUSHING MORE WATTAGE TO THE SUB.

Nov 19, 2013 | Kicker Car Audio & Video

1 Answer

I have 2 sony xplod 4ohm subs rated 350w rms and 1200w max, i have them in really shallow boxes because i drive a single cab toyota, i know these subs **** but i do also know that they can hit alot harder...


the premier amp is better since it has a better rms rating (360w total or 160w each sub) than the eclipse (280w if you bridge all 4 channels which isn't possible but 140w for each speaker bridging 2 channels per speaker). Neither are going to push your subs but if you get another amp wiring kit and use one amp per sub they will sound a lot better and you could just hook both power wire and ground wires from the bridged channels to the power and ground terminals for the sub. That would be my suggestion since the subs are rated at 350w and each amp is 280w and 320w which will push but not blow the subs.

Aug 17, 2010 | Sony Car Audio & Video

1 Answer

I have a few problems. i have 2 amps and 4 subs. first problem is when i connect one amp to my speakers it just hisses and crackles. this never happened before. when i turn up the gain to try and get...


The first amp, sounds like there is straight power going through the gain instead of it being limited. The second amp...hook the other subs up to it and see if it sounds ok. If so, then the subs are messed up. If it sounds the same, make sure the subs are connected correctly.

Oct 21, 2009 | Car Audio & Video

1 Answer

Alpine pdx 1.000 keeps cutting out


You are going to want to make sure all your power wires and grounds are 4 gauge as well as the wire leads to and from the capacitor-4 gauge also. make sure you have a very good ground - the power wire from the battery should hit a distribution block-from the dist. block a 4 gauge should go to the capacitor another 4 gauge to the mono amp and another to the 4 channel amp -every component should have a good solid ground even if you have to bust out a grinder and a drill and some self tapping sheet metal screws and go nuts on it- see if that helps you

May 26, 2009 | Alpine PDX-1.600 Car Audio Amplifier

1 Answer

My amp is protecting unessacarily when ran at 2 ohms


are you factoring the ohm rating from running them parallel?

2 x 2o subs parallel = 0.5 ohm (lowers ohm's)

2x 2oh subs series = 4 ohm

IT is posable that you are calculating the ohm rating fine, BUT some SUBS can reach lower ohm rating while hitting bass- i didnt know this till i had a rather insane sub that would dip to 1ohm while hitting hard bass causing my amp to go into protect mode.


May 21, 2009 | Rockford Fosgate T10001 bd Car Audio...

1 Answer

Sub cutting out


Check the 12v wire running from the battery to the amplifier. Also the sony explode is a garbage subwoofer compared to the Alpine.. sony (they say 1200w max but its more like 100w to power the thing) Amp could be going. Is the amplifier hot when running. If there is a burnt smell comming from the amp, its the amplifier

Mar 27, 2009 | Alpine Type-R SWR-1222D Car Subwoofer

1 Answer

Sub not hitting constantly


The big speakers have wires from the frame to the voice coil. After longer use at higher volumes (or longer travel), the wire can fracture, and make contact only some of the time..line on a bounce or knock.

Apr 20, 2008 | Car Audio & Video

1 Answer

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If the subs are pushed to their limits straight out and remain there as long as the amp is on, the amplifier probably has shorted output transistors. If the speakers are moving in and out like they would be on a bass note, there may be something wrong with the shield ground of the head unit.

Dec 13, 2007 | Kicker ZX1500.1 Car Audio Amplifier

1 Answer

Plz Help - unknow problem


Sounds like a short circut protection on the amp kicking in. It sences the power going to the drivers and cuts itself out before damage is inflicted on the subs.

Mar 18, 2007 | Kenwood KAC-7252 Car Audio Amplifier

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