OK this is something i've never encountered. I just recently sold my box so i put my subs in a new box. everything was working good for about a minute once it was all set up, all the sudden after a minute the subs just started popping, no music coming out of them, they were just popping constantly. They keep popping even when the volume on the head unit is at 0. and when i turn it up the popping stays at the same level. If i disconnect the rca's they keep popping but if i disconnect the speaker wires then they stop. I checked the grounds, all wires, fuse and all that sh*t, i have no idea what it can be. When i start the car, the lights dim a little when the amp turns on then the subs just keep popping constantly, and the amp isnt going into protect or anything. I know for a fact my subs are not blown i had a lot of people check that out, no one knows whats wrong. My subs are two 12" Kicker L7's and amp is 2500 watt Orion
It sounds like your amp chip has gone bad, here is some thing you can try turn on your unit then start tapping on top of with your finger not hard see if the any of the pops matches your finger taps some times when the chip starts to go out it well act like that.
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I agree that It could be one of the other reasons listed here.....
But, I had the same problem with a 1,000 watt Kenwood amplifier and it worked like a boss for the whole two years that I had it and then one day the box that I had my subs in somehow came apart and after I changed out boxes the amp quit working. It came on but it wouldn't work anymore except for when I turned it a certain way or sat it against something.. Anyway it ended up being a loose female port plug on the inside where the auxilary cables plug up.
DOUBLE CHECK YOUR RCA CABLES. MAKE SURE THEY R GOOD & THAT THIER IN THE RIGHT SPOT ON THE AMP AND RADIO DECK.IF YOUR LIGHTS COME ON. THEN TRY THIS........ IF THAT DOES NOT WORK. CHECK TO SEE IF YOUR SUBS R CONN IN THE SUB BOX.IT COULD B SOMETHING THAT SMALL
first off nice choice on the amp check ur power and ground connections make sure the main battery to bady ground is good if questionable add a new one cant hurt to have extra grounds from the batt to the body make sure the amp ground is as short as u can make it make sure its grounded to bare metal if any of these dont work u may have a prob inside ur amp
If the sub isn't working, you won't get a pop. All you need is a small speaker. Don't need a sub, you just want to test the sound. I recently blew 2 subs, no smoke, no smell, no sign of being blown. Absolutely nothing from the subs.... In the past my sub locked up. You can take your sub out of the box and hook the + and - to the battery to see if you can get the sub to pop there. I believe a small box will push a sub into a deep excursion to the center of the cone. I have 2 lanzar VW12D's that just quit. I hooked a 6 x 9 up to my amp and low and behold I had sound! Try that and see what you get...
Check the main amp fuse under the hood, even if it looks good just change it. Often times that light on the amp can come on just from the power amp tunon wire. Try a friends subwoofer box just to make sure the connectors on your box are good, and if that doesn't work then give me some more details....year/make/model of car, what kind of sub, what types of things do you see on the side of the amp....is there a green light as well as a red light?
here is a short test you can try, remove the rca audio cable from the amp & connect a diskman or toher audio o/p device that you can hook up with the same rca wires, turn on the amp & see if you have sound. you can also remove the speaker wires from the sub & using multi meter read the ohm's of the sub, most subs are 4 ohm. Hope this help locate your problem