Subs Started Smoking! Pllease Help.
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=33431
Printed Date: May 17, 2024 at 3:31 AM
Topic: Subs Started Smoking! Pllease Help.
Posted By: NHxj4x4
Subject: Subs Started Smoking! Pllease Help.
Date Posted: June 06, 2004 at 10:41 PM
Guys, I need some help. I have a Kenwood KAC-7201 amp, bridged at 4ohms, putting out 460 watts RMS to 2x 10" Orion XTR subs, wired like this: 
I am running the amp bridge obviously, and the amp is set correctly IE the gain is right were it should be. Tonight I got a THX test CD for subwoofers, threw it in there, turned it up to my max (which is fine I think for my system) and noticed a VERY fowl smell. I turned the stereo off, pulled over, and there was smoke coming out of the right hand sub, which is the one that the amp wire feeds into. Now this smell, I have smelled it before in the last 2 weeks. It wasn't as bad the other times, so I assumed that it was the outside air as it has something of a manuer smell to it. Anyway, what would cause my subs to do this? Oh, they still work, and sound fine, just this smoking thing, kinda weird. I have been running this setup the same way for over 2 months, and this is the 1st problem that I have had. Any help would be great guys. Thanks, Todd
Replies:
Posted By: DYohn
Date Posted: June 06, 2004 at 10:45 PM
Could be a lot of things. Is the enclosure stuffed with poly fill? If so, it could simply be it has fallen against the magnet structure (which can get pretty hot) and is burning. Or it could be a frying voice coil, but that is unlikely if the sub still works. Pull out the sub and see if there is burned polyfill behind it. ------------- Support the12volt.com
Posted By: stevdart
Date Posted: June 06, 2004 at 10:58 PM
When I was using test tones of sine waves at full volume when I was setting the amp gains, my interior speakers (coaxials) started giving off a strong burning smell. I thought they were frying, but they have been fine ever since. Did the test CD you played give you any warnings about volume with any of the tracks?
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Posted By: NHxj4x4
Date Posted: June 06, 2004 at 10:59 PM
there is no poly in there, and I haven't make any changes to the system. This happened to my buddies car just the other day, but his sub does not work any longer. I run them off the amp in mono, so it is tough to see if they are both working, as they both still move. If I fired a VC can it just kinda fry? Does it take some time for them to really die? Would both subs be affected by this? These subs are 6 years old, so I'm not worried about replacing them, and at least I have a good excuse now, I just don't want to get new ones and have the same thing happen to whatever I get for new ones ya know? todd
Posted By: NHxj4x4
Date Posted: June 06, 2004 at 11:02 PM
stevdart wrote:
When I was using test tones of sine waves at full volume when I was setting the amp gains, my interior speakers (coaxials) started giving off a strong burning smell. I thought they were frying, but they have been fine ever since. Did the test CD you played give you any warnings about volume with any of the tracks?
no, there were not any warning. I think since it was a THX test that this is for home stereo's, but that shouldn't have mattered right? I still has the same amount of base that they have had for the last 6 years, so I think that both still work. On the way home (after the smoking) I tried to turn it on again, raised the volume, and the smell came back. That was the last time that I turned it on. I don't get it.
Posted By: auex
Date Posted: June 06, 2004 at 11:37 PM
NHxj4x4 wrote:
no, there were not any warning. I think since it was a THX test that this is for home stereo's, but that shouldn't have mattered right? I still has the same amount of base that they have had for the last 6 years, so I think that both still work. On the way home (after the smoking) I tried to turn it on again, raised the volume, and the smell came back. That was the last time that I turned it on. I don't get it.
Well it is probably the voice coils just heating up and heating the plastic coating, hence the smell. Also don't assume that it is safe just because it is THX cd, that and I bet you didn't set your amps up with a O-scope (this is highly unlikely) which is the only true way to know where exactly your amp is set at.. How many people in this group have blown a sub playing bass mechanic or similiar a little too loud? ------------- Certified Security Specialist
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Posted By: NHxj4x4
Date Posted: June 07, 2004 at 9:27 AM
Your right, I don't have access to an O-scope, wish I did. Anyway should I just not play that CD again, or is something else truly out of wack with my system. Like I said I don't mind getting new subs. What do you guys think of the Infinity Kappa 100.3dvc? They look pretty sweet to me, and fit my wallet nicley also. Any other reccomendations for a $200 pair of 10" subs? Thanks! Todd
Posted By: HumbleI
Date Posted: June 07, 2004 at 9:46 AM
whats an O scope??
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Posted By: NHxj4x4
Date Posted: June 07, 2004 at 10:08 AM
HumbleI wrote:
whats an O scope??
Osilliscope (sp?)
Posted By: HumbleI
Date Posted: June 07, 2004 at 10:09 AM
whats it do??
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Love-peace-guidance
word-SOUND&power
Posted By: NHxj4x4
Date Posted: June 07, 2004 at 10:26 AM
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