Question about Pyle BZDBP212 Car Subwoofer

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Amp is working and is putting out, but no sound from subs

Hi! I am having a problem with my subs. They use to work, but sometimes would go off and on. Recently they havent been working at all. I know its not the amp, because all the lights are go and light green. I even tested the cables connecting from the amp to the subs, and there is output, but no sound. My uncle and I even tried connecting the cables to an old speaker he had lying around, and stil no sound! i was thinking maybe its the cable connecting the amp to the cd player? i dont know. any suggestions on what it can be? or any estimate on how much it would cost to have a pro check it out? thanks.

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  • bam77_69 Jun 25, 2008

    I have a single orion H2 12.2 sub in an open box. I am also run a JL Audio 1000/1 amp. I know the amp works better than ok. The problem is that the sub does not produce sound, I can not believe that the sub is blown. I have the voice coils wired paralled to run 1 omh. I have replaced all the wires between the sub and the amp still no sound. What gives??

  • Anonymous Sep 04, 2008

    hi i have a crunch amp, and this problem just happened, happened before with my boss amp also. I had both the amp's pushing 1 12" sub and i had it bridged with sub wired for 4ohm, all i did to fix it was un-bridge the amp, and everything was fine, even after i re-bridged it, seemed to work fine. Both amp's this fix works, hope thats helpful



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I am a simple person so english would be good, my amp works and my cables to my amp work as if i take a cable out of my amp the light goes off so i know its not my cable to my amp and i have used that live tester thingy so i know everythings getting power, and the sub works as i have connected the sub to a normal speaker and it works so i dont understand the problem, why cant i get no sound?

Posted on Jun 02, 2013

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Ay man I had the sam problem. What's happening is your amp is taking in too much power and too much heat. In my car I have a aduibahn amp that matches the box like yours. You should try turning off "bass boost" and/or "sub sonic" or "game" on your amp if it has those options. This will cause less heat and power and prevent your amp form haveing a terminal shutdown which is what Im confident is happenening. Also does your ride have AC? If not you should try letting your back seats down just to test it. Cause if your car is hot, then imagine how hot the trunk would be. If you need more help I got you at 317 374 7483 or peace

Posted on Jun 15, 2007

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Check your auxilary wires (The wires running form amp to CD player), and remember to make sure you have them hooked up correctly in the back. If that doesn't work, check to make sure your amp has power; just because the lights are on doenst mean there is power to output. Check this by making sure it is connected to the battery, the positive and negative are attatched correctly, and the fuse is OK. The wires from CD player to amp give it its lights.

Posted on May 28, 2007

Chck da fus on powr cord, it nds to b tight not shaking i had that prob, now it works

Posted on Aug 24, 2007

You should check the output power on your amp because it is possible that these speakers may be to much for it. easy way to check this it to touch your amp when its been running for about 15 minutes if it is hot then it is overheating and thats why it won't give out sound.

Posted on Jun 01, 2007

Try adding a capacitor for the amp, check wires by installing new ones... try replacement amp :) this goes for all ppl with same problem .. (noticed it`s a 1 y old thread ;) )

Posted on Mar 12, 2007

Sounds like have a break in you wires - replace them with a good quality wire -- make sure you use the correct gage wire - the amount of power that you are pushing to the sub makes a big difference on the gage of the speaker wire. M

Posted on Dec 27, 2006

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Ummm if you want to try this take you deck out get a new set or r.c.a.s and just run them over you seat to your amp and try that to see if you get any power to your subs. also even if your amp lights up dose not mean it works the out put of your amp might not work.

Posted on Aug 20, 2006

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Posted on Jan 02, 2017

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SOURCE: I have this same problem

Check the power with a volt meter. The battery power, then the remote power. Also make sure it's grounded properly. bad grounds cause mayhem.

Posted on Sep 14, 2009

  • 78 Answers

SOURCE: power in amp but no sound to speakers

you need to make sure youre getting a signal from the source, RCA's I suppose. Check for loose connections or broken wires. make sure to have 12v+ on power and remote inputs at amp...proper ground too. Lastly, check your ohm loads at speakers, maybe one is about dead. make sure crossover settings are correct.
good luck!

Posted on Sep 19, 2009

  • 12 Answers

SOURCE: i have an alpine mdx 1000 amp an 1 12

make sure your speaker wires have good connection and that its wired right

Posted on Mar 27, 2010

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I have 2 l7 kicker with a 2000 watt amp not really a good brand though..sometimes the subs work perfekt but sometimes they dnt work as the way they suppose to sound they sound really weak n when im driving...

OK-3 issues here but you already know one lol-you bought a substandard amp for some bad *** power hungry subs---thats your first issue :)

Check the ground for the AMP it shouldn't be any longer than 12" from the amp to its grounding point-Any longer than that and several issues can happen, like poor power to the amp, feedback (winding noise over the speakers, usually changes pitch or frequency with the engines rpm's), intermitant substandard sound (your experiancing this) and coil bounce (your subs move in and out producing little to no sound, you are experiancing this as well)

The same issues can come from the amp not having enough constant power to sustain the subs when they hit repeditivly, to fix this you need to buy a cap and add it to your system- A cap quickly charges using the battery, and supplies the extra umph your amp needs so it can push the subs without starving itself. With the subs you have I recommend a 1.5 to 3 fared capasator

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1 Answer

Turns on but no sound

Hi just double check with multimeter for power if thats all good check your rca leads as they send the sound to amp and check that sub out put is on in cd head unit i know these a dumb things but sometimes its these that snag us hope it helps good luck

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hi there
on your CD deck or what ever unit you plugged the RCA wires to needs to be set on subs the radio needs to be set to put sound to your amp.....on your CD player if you press the F/function button a few times it will scroll to SW which is for the subs set this to the on position or if your CD player has a button with SW press it and turn on this feature......if this has been done......check the fuse or fuses on the amp.......if you have done all of the above check the back of the CD unit to make sure you are plugged into sub-woofer RCA or R (rear) RCA ..........sometimes people accidentally put the RCA wires into the aux input RCA,,,,,, double check this.........
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Have searched and searched and found out a few things about this HU. One question for you. Are you powering your subs through 1 amp and if so what amp is it??
Firstly the sub output only goes from 0 to -14 which isn't very loud.
Secondly, there is one write up of a guy that says, "Hi i also own a VM9312, and the way you make the sub louder is by turning it off. To do this, you go to settings, then go to audio, and turn the subwoofer OFF. This is really weird, but it worked for my unit."
Sounds strange but worth a go. And have you got the brake override working. If you need instructions and code give us a shout.
Sorry I can't help anymore at the moment.

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1 Answer

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if you are sure its the amp. the problem is internal. but if your not sure, try a different stereo or source of sound to the inputs of the amp. if there is still no sound than it is the amplifier and it could be a number of things.

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your system is not connected right take it all out and put it all bk in

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