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messed up subs

Old Aug 13, 2008 | 02:09 PM
  #1  
Roadkillboy911's Avatar
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Default messed up subs

right you guys might not remember me but i was a member a while ago. well just recently i think my subs have blown but im not sure. the reason im not sure is because if everything is hooked up and i push down on the speakers themselves they start to play sound but as soon as i let off they stop playing music. all the wiring is set up correctly too. that was the first thing i checked
 
Old Aug 13, 2008 | 09:14 PM
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your subs are blown..... the winding in the voice coil is burnt through ...... when you push in on your cone it passes the burnt spot....... sorry man
 
Old Aug 13, 2008 | 09:27 PM
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aahhhhh dammit haha. oh well **** happens. guess i will just gotta buy some more. i think i will use the existing box cause its still good. and still use my amp too and just buy 2 10 inch speakers and put them in the box
 
Old Aug 14, 2008 | 05:20 AM
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Could have broken the braided wires that lead from the terminal block to the cone. This is not very repairable but it could be a clue to what went wrong. The cones were moving too far. Either too much power or a bad match between the speakers and the box.
 
Old Aug 14, 2008 | 09:19 PM
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You might check warranty on the subs too. Alot of companies, like JL audio, MTX, etc.. will refurb them for way less then new price.

I had a set of JL 10's repaired for 50 bucks + shipping, and walaa, brand new speakers. Had em for almost 6 years now since the refurb. Still kickin.

Something to look into if your on a budget.
 
Old Aug 28, 2008 | 10:00 PM
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Might I point out at this time that u might want to take some steps to prevent it from happening again. You might need to better match ur box to your speakers, or simply tune your amp/hu to not abuse ur subs so much. I find a good sealed box is the best prevention against damage to ur subs as the pressure doesn't allow them to get damaged.
 
Old Sep 4, 2008 | 08:06 AM
  #7  
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FYI The cause of blown speakers is much more often UNDERpowering rather than overpowering. If you have some kickass subs but only a mediocre amp you may want to dial back the gain just a little so the amp isn't overexerting itself, clipping, etc.
 
Old Sep 4, 2008 | 11:14 PM
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im sorry but I don't see how that works, u can clip a great amp if you try hard enough. How can underpowering a set of subs cause damage. It just doesn't seem physically possible.
 
Old Sep 5, 2008 | 07:33 AM
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ya nothing personal but your a f***en idiot if you think underpowering a sub can hurt it!!!!
if you think that underpowering a sub can hurt it then you better keep your stereo on all the time because with it powered off you subs are going bad right now.LOL
dont believe the hipe!!!!!


i can tell you from experience... your amplifiers gain control is set to high along with the bass boost most likely. so youve been clipping the subs signals hardcore to get more BOOM.

and whats happened now is your tensil wire on the sub has fried in 1 spot. it will be a black frayed spot. quick fix for now, soldering flux and a TOUCH OF SOLDER! JUST A TOUCH! you should clean the frayed spot on the wire doing into the back of the subs cone and where the wire is kinda frayed heat it up with the solder gun and touch enough solder to it for it to hold the wires together. you dont want to much solder on the tensil wires because thats what does all the flexing with the subwoofer if you solder to much of it it wont have enough flex for the subwoofer playing at full power.
but definatly turn the gain and bass boost down on the amplifier!

everyone thats instaled there own systems has learned thru quite a few subs how to setup a system properly. that gain know is not a volume know! and the bass boost should never be set to max. most i ever go anymore is half way. if you have a good ear you can set the amplifier pretty close with just tweeking the amplifier but if you cannt hear distortion or tell any difference then dont try set it low or ask a stereo shop guy to tweek the amplifier for you.
i went thru about 2 dozen subwoofers and a half a dozen amplifiers before i learned that the gain and bass boost does not do wonders.LOL if you want louder bass then buy better subwoofers and amplifier that can pump some juice out
you get what you pay for inshort

you can temp fix it but know that unless you learn to set your amplifier settings better it will blow out another spot in the tensil and you can only repair the tensile in 2 spots MAX and you loose most of the flexability and first time you hit the bass with your 3rd or posibly 2nd repair with to much solder and it will rip the tensile wire right out from the subs cone making it not repairable at all!
 
Old Sep 6, 2008 | 05:39 PM
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That's exactly what I though... almost down to the wording. Lol. I was gonna suggest pretty much the same thing. How can underpowering a sub cause damage, its like saying driving slowly will damage your engine. I guess there's no such thing as common sence these days, just common stupidity. However I am still on my first set of subs and amps, but I did a lot of research first (a lot of which was compliments to addiction).

Set your lpf to the correct setting depending on what type of music you listen to, the 40hz bass boost or similar should be also adjusted to compliment the rest of your system.

IMO: I set my equaliser so that my speakers only play high and mid range freqs and drops off rapidly around the 80hz mark (...from memory.... I listen to techno, rap, metal, all types so its hard to find the best freq). This is what my lpf is set to on the subs, with the subs turned up via the gain, and almost no bass boost.

This way, the incar speakers don't play the bassy freqs, which will be the freqs that cause all the damage when cranked meaning you can achieve a higher spl before distortion. Instead, the subs play ONLY the bassy freqs. This gives you maximum volume for each speaker throughout the full freq spectrum.

Im interested to hear addictions response to this settup.
 
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