subs don’t always work
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=27864
Printed Date: June 01, 2024 at 1:30 PM
Topic: subs don’t always work
Posted By: I AM
Subject: subs don’t always work
Date Posted: March 07, 2004 at 2:00 AM
sometimes my subs don't work.... they cut out.......and when I turn my bass on my deck up they kickin in and then they cut out again......
Replies:
Posted By: pioneer86
Date Posted: March 07, 2004 at 2:25 AM
I've never had that problem before, but one thing I would check would be the wiring. Make sure nothing is shorted out, and you have thick enough wiring to support what you're trying to do. You might also have a bad ground to your amp.
Posted By: netboy
Date Posted: March 07, 2004 at 3:08 AM
amp overheating then cooling down and firing up again?
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Memphis MC-1300
2 12" JLw6v2
Diamond audio M3 6x9
Diamond audio M3 5.25 components
Audio control Matrix
Carputer
Posted By: 97neon
Date Posted: March 07, 2004 at 7:40 AM
your probably clipping the amp, amps probably not enogh power for the subs, whats brand of subs and amp, and what are the model numbers? your gains are probably to high
Posted By: DYohn
Date Posted: March 07, 2004 at 9:38 AM
Clipping, yes. Not enough power? No. Gain problem? Most likely. You have the input gain on your amp set too high and the amp is going into protection. OR, you have too low an impedence load on the amp. What is your setup?
Posted By: I AM
Date Posted: March 07, 2004 at 10:42 AM
kenwood kfc-w3005.........and a kicker kx150.2......
Posted By: DYohn
Date Posted: March 07, 2004 at 11:40 AM
OK. That sub is a DVC 4-ohm speaker, which means you can wire it either at 2 ohms or 8 ohms. The amp is capable of being bridged, but into no less than a 4-ohm load. So if you have the sub wired for 2-ohms (both voice coils in parallel) and have that bridged to your amp, you are overloading the amp and it will cut out. For this configuration, you must wire the sub at 8-ohms (VCs in series) to the amp. You will get approximately 75 watts to the amp (peak) with this setup. This is not a good match. Is this the same system you are asking about enclosure types on another thread? If so, what kind of enclosure is it in now?
Posted By: I AM
Date Posted: March 07, 2004 at 2:14 PM
the specs on the sub say its rated at 4 ohm.... its in a crappy home made box (not outta mdf) it made outta plywood and it's 3ft by 1.5ft....freakin huge.........
Posted By: I AM
Date Posted: March 07, 2004 at 8:24 PM
could it be that its cold....I live in northern alberta canada.............
Posted By: netboy
Date Posted: March 07, 2004 at 9:51 PM
i dont think that cold would hurt it, maybe heat, but not cold
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Memphis MC-1300
2 12" JLw6v2
Diamond audio M3 6x9
Diamond audio M3 5.25 components
Audio control Matrix
Carputer
Posted By: forbidden
Date Posted: March 07, 2004 at 10:25 PM
So is it working yet?
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Top Secret, I can tell you but then my wife will kill me.
Posted By: I AM
Date Posted: March 07, 2004 at 11:35 PM
well its working now and I haven't had a problem for 3 days but I just wanted to know why it was doing it.........could it have been the guage of the speaker wire.......because I just upgraded it.........and wired it in properly........but I need a proper box..........I am thinking of just spending the 120$....and buying a head unit....but the fact that I have to spend 100$ on a reloction harness (thanks general motors).... nut I am on a budget so its all came in peices.......
Posted By: I AM
Date Posted: March 07, 2004 at 11:36 PM
well its working now and I haven't had a problem for 3 days but I just wanted to know why it was doing it.........could it have been the guage of the speaker wire.......because I just upgraded it.........and wired it in properly........but I need a proper box..........I am thinking of just spending the 120$....and buying a box........and buying a head unit....but the fact that I have to spend 100$ on a reloction harness (thanks general motors).... nut I am on a budget so its all came in peices.......
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