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How to keep my subwoofer from blowing?

Keep getting amplifier mixed messages?

  • i keep getting different ansers from everyone and i wanna know the truth about setting a amplifier and headunit right without no problems. gain,subonic,lowpass,bass boost. subsonic they say only 2-3hz below your tuning but some say you could put it all the way down as well. low pass say you could put it 150hz or more but some say dont over 100hz. bass boost same say no and some say alil. and if bass boost was pointless why is it a setting? gain control say match your headunit volts or use ohm law. then says put your sub level at max and eq flat. but some say sublevel at max is a no no. that everything should be flat but then i wouldnt be following the ohm law way. i have 1 15in subwoofer in a 35hz ported box. headunit pioneer 9800 5volt preouts. vol 60. dont know what my radio clips at so i put it at 45. but some say some radio still clip 3/4's of the way up so yeah how come i figure all this stuff out or who can really tell me how i should set this up right. because i keep blowing subwoofers

  • Answer:

    subsonic... 5hz max below tuning of port for vented... sealed set it at the fs of your speaker... low pass 80 tops for 15s anything smaller ya can try 100 but no more... see what you like and set it at that.. it wont hurt to run it a little higher... but running it higher will make your bass sound muddy.bass boost is for speakers that have a higher fs of say 50 or so like found on some 6.5 in woofers.. give it a little extra bass when the speaker is clearly rolling off...dont know what kinda amp ya runnin.. or subs for that matter... but a low quality amp will distort and blow a sub quicker than a sub that is overpowered by a good quality signal every time..

johnny at Yahoo! Answers Visit the source

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I would set the subsonic filter at 30 hz. when a sub plays below the tuning frequency of the box, it acts almost as if its not in a box at all which is bad. if you want to be totally safe, then set it at 35 hz. but you can get away with setting it a little bit below the tuning. low pass filter is a personal preference. set it where you think it sounds best. It affects what frequencies the amp will send to the sub to play. some folks like their woofers to only play bass. other don't even set a low pass for subs and let them play everything. bass boost should be off or low by default. if there's a bas remote, then you'll be able to turn it up on songs that are lacking in bass, or recorded at a low volume. having this set high by default will cause the amp to clip the music signal. which is very bad for speakers. setting the gain is probably the most argued thing in car audio. yes the "best" way is to match it with the pre out voltage. but often times that will leave your system playing at a volume lower than you might like. the way I do it is i set my headunit to 40 (it goes up to 62) from there I listen to a song I know pretty well and adjust the gains to a point where I can hear the distortion (a.k.a clipping) and then I turn them back down to a point below where I can hear that distortion. its hard to hear distortion in subwoofers though. i set my subwoofer to a level where I can still clearly hear my other car speakers over it. that works for it because my subwoofer and amp combo has the potential to over ower the rest of my system, so i know setting it to that level won't damage my equipment. But when setting your gains I would avoid going past 3/4ths with them. if you have to max out your gains to get the volume that you want, then you need a more powerful amp.

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