what causes the sub to make Popping noises? - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 07-30-2006
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what causes the sub to make Popping noises?

So i have a alpine 12 type R 4 ohm and a alpine Mrd-605. My amp bass is turned all the way up and my h/u subwoofer is turned up to 12-15 (15 is max). My sub doesnt have a problem with popping if my component speakers(type S's) bass isnt turned up at all but when i have em turned to 6 or higher (10 is max) the sub makes popping noises. So im asking is why when i turn my speaker bass up it causes a popping noise from what I THINK is coming from my sub, when it hits the deep bass?


edit: it only pops when the volume is turned up past 14 or 15 with my speaker and sub bass turned up
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Old 07-30-2006
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if you have the bass turned up on your HU, you amplify the bass waves of a certain frequency which causes the cone of the subwoofer to move further in and out when it hits that note...

In Layman's: Your voicecoil is hitting the backplate. Keep the bass turned down some.
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Old 07-30-2006
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so if i amplify my components i know itll make my tweets and speakers more clear but doesnt it give me a little extra bass also? will that make it pop even more?
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Old 07-31-2006
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No, the bass control on your head unit needs to be turned down to the point where the sub doesn't make that noise anymore. Then you'll be alright. You can amp your front speakers as well and it will give you a little more midbass up front like kick drums and snares, but not real bass you get from your subwoofer.
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Old 07-31-2006
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turn the gain down on the amplifier
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Old 07-31-2006
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Quote:
Originally Posted by KARPE
turn the gain down on the amplifier

x2
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  #7  
Old 07-31-2006
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that's what i was trying to say...lol.
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  #8  
Old 07-31-2006
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first off why are you trying to create bass with your components when you have a sub? let your sub do the work. thats what you have it for.
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Old 07-31-2006
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ok so i turned my gain down (down to .4) and it does stop the every once in a while popping/bottoming out noise but its not nearly as good of sounding as it was with the ocassional pop at .3. I was thinking could it be that my box is too small? it is a fairly small box i mean it has only 1.1 cubic feet of air space and i was told that the type R sounds way better in a bigger box. Mabye i should switch to a ported bigger box to get that deep bass that im going for?
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Old 08-01-2006
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that could be it, too. Sometimes in car audio, it's hard to pinpoint a single problem, sometimes you have to try lots of different things and you'll eventually work it out.
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Old 08-01-2006
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Ok so even when you turned the gain down it still happened just not as obvious or loud as before, correct? so the gain can be elminated. Has there always been an issue with popping sounds since you first installed this? I dont think the size of the box should cause this, nor should adjusting the bass levels for the midbass on the head unit. I dont think throwing more money at this with additional components is a good desicision either. I honestly think it is an issue with the system installation and possible ground loops. I'm not going to attempt to give you an answer by using words and or phrases that might not be clear, or attempt to make myself sound ubber smart and all knowing on the subject. Just check out this link from crutchfield that I think can provide some valuable insight into the issue you are having. As pointed out in another thread crutchfield maybe overpriced but they are a solid US company and have good support\customer service.

http://www.crutchfield.com/S-1DaILHq...ech/kb350.html
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Old 08-01-2006
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im going to assume that you have a ported box.. and yes, 1.1 cubic feet is a little small. Im pretty sure that alpine recommends 1.5
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Old 08-01-2006
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1.1 is between the recommended air space for a sealed box from alpine... and as for the ground that i used i just used the hole from the bench seat that i removed...and of course i sand papered the surface down...but mabye that still isnt as good of a ground as i need? there is some kind of plastic surface that covers the sheet metal but the hole from the seat goes through that plastic covor to the sheet metal.
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  #14  
Old 08-01-2006
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oh ya and my amp is saying that im getting 12v
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Old 08-01-2006
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mine dose that to. i got a 12 inch diamond with a power acustick amp. idk but for some reson when it first started to pop like that if i put my hand in front of the sub (not touching it at all) it would stop maken the noise but as it got more broke in i think it would do it at lower volumes and i cant git mine turned past 15 on my custom seting on my HU. My box is about double the size the guy at the audio place i got it at said it had to be. I think thats all but im not sure for now.
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Old 08-01-2006
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yea im sure mine has to be a gound loop...does anyone know if there definately is other grounds connected to the same ground as im using for my amp?
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  #17  
Old 08-02-2006
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hey last time i had poping coming from my sub i actually melted the glue off the voice coils so the coils were slaping together making the poping noise hopefully urs didnt do that but i thought i'd just throw the idea out there
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  #18  
Old 08-02-2006
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hey..... i think mine mighta did that. ill have to pull it out and check casue i know when i touched it once in the center i didnt do that but idk ill have ta look.
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