Popping sub?
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=31782
Printed Date: May 15, 2025 at 10:00 AM
Topic: Popping sub?
Posted By: hickoutlaw2
Subject: Popping sub?
Date Posted: May 07, 2004 at 6:39 PM
Hi, I just had a quick question that will probably sound dumb to some of you seasoned veterans. I've got 2 rockford fosgate punch HX2 12's and they are in a sealed box with 1.25 cu ft. per chamber and I am pushing them with a power acoustik amp which I'm running at 370 X 2 RMS, and each sub is 500 RMS. When I turn the volume up (not even very much) it sounds OK but I keep hearing a wierd popping sound during strong or sudden bass notes and it is really getting quite annoying. I wouldn't think that they are being over powered because it does it with nowhere near 500 watts. Please help.
Replies:
Posted By: forbidden
Date Posted: May 07, 2004 at 6:44 PM
Where is the gain on the amp set at and does the amp have a bass boost control?
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Top Secret, I can tell you but then my wife will kill me.
Posted By: sam1
Date Posted: May 07, 2004 at 6:46 PM
i had that problem once when my box was too small. but if youve got 1.25cuft, thats not the problem. wheres your gains at? if they are up too high it will do that as well. actually thats where id put my money. probably clipping your subs. try turning it down a 1/2 of a turn or so and see what happens.
Posted By: sam1
Date Posted: May 07, 2004 at 6:47 PM
hey, you beet me to it. i wanted to be first=). j/k
Posted By: hickoutlaw2
Date Posted: May 07, 2004 at 6:59 PM
The crossover is set at 80htz and the amp doesn't have a gain setting on it.
Posted By: hickoutlaw2
Date Posted: May 07, 2004 at 7:01 PM
And yes the amp does have a bass boost control but when it is off, it can barely make the subs move.
Posted By: forbidden
Date Posted: May 07, 2004 at 7:21 PM
Give your head a shake and go back and look at the amp, yes it will have a gain control, it may not say gain but may say something different. Post the exact model # of your subs and amp.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: hickoutlaw2
Date Posted: May 07, 2004 at 7:51 PM
The subs are the fosgate RFD2112's and the amp is the power acoustik gothic series OV2-1600, and by gain would that be the "level" knob?
Posted By: forbidden
Date Posted: May 07, 2004 at 8:38 PM
Yes that is the gain control, if it is turned up, turn it down. You have dual 2 ohm subs by your last post, this means that you are either running the amp at 1 ohm stereo if the subs are parallel wired(expect it to die a horrible death and take your subs with it). The other option is that you have series wired the subs to each channel. The subs will like this, the amp will like this and I like this. The amp you have will make that kind of power when it gets struck by Lightning and is going downhill with a tailwind with all the occupants rowing as fast as they can and the subs facing backwards for an extra push. You have good subs, give them a way better amp.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: hickoutlaw2
Date Posted: May 07, 2004 at 9:08 PM
The gain is about 70% up. If I did look at replacing the amp what would you recommend to get? I am most likely going to get one more sub this summer, and please keep in mind i'm not rich. Thanks a lot for all your help!
Posted By: forbidden
Date Posted: May 07, 2004 at 9:13 PM
You need an mono sub amp that makes about 1000 w rms @ 2ohm mono. Thus this amp may be either a 1 or 2 ohm mono stable cladd D sub amp like last years Rockford 1000bd. Wire the subs like this when the time comes. Wiring Option #2
 ------------- Top Secret, I can tell you but then my wife will kill me.
Posted By: customsuburb
Date Posted: May 08, 2004 at 1:12 PM
hickoutlaw2 wrote:
The gain is about 70% up. If I did look at replacing the amp what would you recommend to get? I am most likely going to get one more sub this summer, and please keep in mind i'm not rich. Thanks a lot for all your help!
Whoaa there turbo. Just because the gain is at 70 percent dosnt mean its not clipipng. Try doing a search for gain settings on this site.
Posted By: DYohn
Date Posted: May 08, 2004 at 2:42 PM
Indeed, 70% up on input gain probably means the amp is clipping badly. How did you determne that to be the proper setting? ------------- Support the12volt.com
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