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why does my sub pop at high vol

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=61947
Printed Date: April 29, 2024 at 1:49 AM


Topic: why does my sub pop at high vol

Posted By: chris305
Subject: why does my sub pop at high vol
Date Posted: August 24, 2005 at 1:16 AM

i got a directed 2400D amp 1200 1 ohm  800 2 ohm 400 4 ohm. i got 3 compvr kickers there 400rms/800each thats a total of 1200rms. im running them at  2ohm with that amp so its 800 watts and i have the gain all the way up. so if you divid 800/3 it will be 266.67 watts per sub . and when i put in some CDS i have at high volumes my subs will pop like to much power is goign to them . and why woudl that happen if its no where close to 400 watts to a sub kinda confusing to me? would it be disturtion? and why woudl that happen out of no where. i ahve had this for 8 months and just 3 weeks now it has happened i had to turn down my bass level on the amp. any advice or suggestions in why this would happen?



Replies:

Posted By: dwarren
Date Posted: August 24, 2005 at 1:19 AM

So you had the gain cranked full tilt [THE GAIN IS NOT THE VOLUME] and, AND some bass boost device on?

well I can't really think of any problems now, but I will let you know if I think of anything. Maybe you need two more amps???



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Posted By: boardinbum
Date Posted: August 24, 2005 at 6:07 AM
I think dwarren's right. I think a couple more amps and a few caps for each amp should solve the problem.

I'd try that first. Then, if the amps and caps don't seem to fix the problem for whatever reason, I guess you could try doing a search on here for "setting gains" and maybe read up a little about that.




Posted By: boardinbum
Date Posted: August 24, 2005 at 6:14 AM
...Alright, enough of being an ass about it.
Read what DYohn says about setting gains here, and follow his instructions. That should solve your problem.




Posted By: DYohn
Date Posted: August 24, 2005 at 9:43 AM
And if properly setting your gain and turning off the bass boost doesn't fix the problem, you probably need more chrome.  posted_image

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Posted By: cujo613
Date Posted: August 24, 2005 at 10:07 AM

DYohn] wrote:

nd if properly setting your gain and turning off the bass boost doesn't fix the problem, you probably need more chrome.  posted_image

I think I like it here already



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Alpine dva-7669 Alpine cva-1004 Zapco 360.4 zapco 1100.1 2 image dynamics idq v2 fifteens Alpine type r 5.25 components and 6x9's




Posted By: Steven Kephart
Date Posted: August 24, 2005 at 2:36 PM

This is what happens to subwoofers when gains are set wrong:

posted_image

 

Steven Kephart

Adire Audio



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Posted By: chris305
Date Posted: August 24, 2005 at 3:46 PM
ok and what is that?. anyways i had my system hooked up by audio store they said they turned the gain up higher to push alittle more . so whne i do turn it up it will put out more. he said its probably cause there under powered and i will need to either run it at 1ohm or get a amp that pushes 1200 at 2 ohms or just get another amp. but still no one knows the real reason why my subs are popin at high volumes. i think the amp is more power than it says sense he did put the gain all the way up. so im like confused an dim tired of goign to places and all they do is give me the runa round and just try to make me spend money insted of telling me the problem.




Posted By: boardinbum
Date Posted: August 24, 2005 at 3:51 PM
SET THE GAIN PROPERLY

Like I said earlier, do what DYohn says here, and that'll solve your problem.




Posted By: DYohn
Date Posted: August 24, 2005 at 3:53 PM

chris305 wrote:

ok and what is that?. anyways i had my system hooked up by audio store they said they turned the gain up higher to push alittle more . so whne i do turn it up it will put out more. he said its probably cause there under powered and i will need to either run it at 1ohm or get a amp that pushes 1200 at 2 ohms or just get another amp. but still no one knows the real reason why my subs are popin at high volumes. i think the amp is more power than it says sense he did put the gain all the way up. so im like confused an dim tired of goign to places and all they do is give me the runa round and just try to make me spend money insted of telling me the problem.

Wow, where do you live and what store told you that?  Whoever it is needs to be fired and called out as a source of mis-information.  The real reason is amplifier clipping and/or woofer overdriving.

Ignore that idiot and either set your gain properly yourself or go to a reputable shop and have it done.  Yes, it will cost you a few bucks but you will not destroy your speakers.  If you continue operating like you are, you will.  And soon.

Steven's photo is of a subwoofer voice coil that has been destroyed.  I hope it's not his Brahma...  posted_image



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Posted By: stang351w
Date Posted: August 24, 2005 at 4:45 PM

if the subs make a poping noise when your cranking your system it usually means the voice coil is moving to much in the magnet and it's bottoming out....or in simple terms, your trying to make the cone of the sub go further then you it's able to...it's like reving a honda up to 9000 rpm and expect it to run after posted_image   but as to why it never did that befor untill just a little while ago..the subs could be getting weakerand almost at the end of there life...as short as it was..or will be...

also another peice of info...if the sub says it'll handle 400 RMS then depending on the box design (ported, sealed,etc) will also affect how much power a sub can handle befor it "bottoms out" a ported box doesn't need as much power to push the sub as hard as in a sealed box,

there's just one thing questioning me...you said you have 3  sub and running at 2 ohm...did you series 2 then parallel them down to 2 ohm? or did the store you went to hook them up and tell you there at 2 ohm...because 3 - 4ohm subs parralled is 1.33 ohms...which would change your output numbers and make them higher.



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certified installer




Posted By: boardinbum
Date Posted: August 24, 2005 at 4:49 PM
I think he meant 2.67ohms




Posted By: DYohn
Date Posted: August 24, 2005 at 5:20 PM
Doesn't matter how he's got them wired, if his gain is "all the way up" and he's also using "bass boost" he's most likely frying them.  Too bad they're not Sony.

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Posted By: chris305
Date Posted: August 24, 2005 at 8:40 PM
 yea i got the gain up all the way and the bass level up all the way. . also what you said before stang351w im not sure hwo they got it hooked up but he told me it was 2.33 or 2.67 ohms i forgot cause you cant bring 3 subs to an even ohm . and like it is rated at 800 at 2 ohms so thats 266.66 watts into each sub. why would the subs be pushing furture if i dont even have 300 watts running to them . and i got it in a sealed box




Posted By: DYohn
Date Posted: August 24, 2005 at 8:51 PM

chris305 wrote:

 yea i got the gain up all the way and the bass level up all the way. .

This is very unwise.  Your amp is most likely clipping like a weed wacker on steroids.  Probably sounds about as good, too.  Turn that sh*t down and set it up properly, unless you don't care about blowing yur subs rather quickly.



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Posted By: chris305
Date Posted: August 24, 2005 at 10:53 PM
what about if i keep the amp the same and just trade the 12's for 15's will that be a better thing




Posted By: DYohn
Date Posted: August 24, 2005 at 11:11 PM

chris305 wrote:

what about if i keep the amp the same and just trade the 12's for 15's will that be a better thing

Nope.  Setting the gain properly is the only thing you can do to avoid frying your speakers, no matter what they are.



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Posted By: dwarren
Date Posted: August 25, 2005 at 12:16 AM
DYohn] wrote:

P>This is very unwise.  Your amp is most likely clipping like a weed wacker on steroids.  Probably sounds about as good, too.  Turn that sh*t down and set it up


That's a very funny analogy there DYohn, LOL!



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Posted By: chris305
Date Posted: August 25, 2005 at 4:55 PM
ok sense that wont help. i guess i really dotn know what a gain is then. what does the gain actually do to the speakers or amp?




Posted By: dwarren
Date Posted: August 25, 2005 at 5:07 PM

Ok try https://www.bcae1.com and read it a few times maybe. Select number 63 on the right.

After that, maybe some further explaining could be done.



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Posted By: Paradigm
Date Posted: August 26, 2005 at 8:59 AM

chris305 wrote:

ok sense that wont help. i guess i really dotn know what a gain is then. what does the gain actually do to the speakers or amp?

This is the point where someone should be advising you to take this to your nearest audio dealer (i.e. someone who knows what they are doing) and have them set everything properly. Do the reading that dwarren suggested, but at this point, you really should let someone else handle this before you have have to drop another $X on a new setup cause you are destroying your current one. Once you have a clearer understanding of what gains do and car audio in general, then you could go back and do some experimenting without running the risk of damaging your gear.



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VEHICLE: 2002 GMC Sonoma ZR2
Alpine CDA-7940
AudioControl EQT x2
JL Audio 1000/1
JL Audio 10W6 (originals) x3
Kicker ZR120
Kicker ZR460
Polk GXR-6 x4
Polk GXR-4 x2




Posted By: dragon51
Date Posted: August 26, 2005 at 11:55 PM
Man some of ya'll are way to harsh, a simple question and a lot of grief and what makes so bad is the store where he got the equipment at told him that was how it's suppose to be set up so he the poor guy gets attacked some more? That's BS alot of people I know think the same thing but at least some of you pointed him in the right direction.




Posted By: uthinkuknoaudio
Date Posted: August 28, 2005 at 7:28 AM
hey newbie, we helped him out. Get off our case. We aren't being to harsh. We told him what to do and had a little fun doin it (DYohn weedwacker on steroids) lol



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"I don't play games. I play Nakamichi and that for real yo" - Probably some japanese kid said this in the early 80's trying to sell stereo out of his trunk lol.




Posted By: dragon51
Date Posted: September 04, 2005 at 3:15 PM

uthinkuknoaudio wrote:

hey newbie, we helped him out. Get off our case. We aren't being to harsh. We told him what to do and had a little fun doin it


Ya, I guess I am just use to my home audio page where when some one askes a real question they are pointed in the right direction with out pointing fun at a person who just dose not know better.posted_image






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