Rck'nRF Posted April 17, 2014 Report Share Posted April 17, 2014 When pushing my brand new & broken in 15" Alpine sub,at about 150watts it's starts making this crunching sound like the voice coil is in a to tight of a box, or is it in to big of a box? Sub can handle 500watts rms,it's in a box in the 1.9 cu.ft area(rated for box between 1.34 - 2.1cu.ft),the sub can handle so much more,but i don't want to wreck it,as soon as it hits those heavier bass notes, it's scratch city coil stuff going on..? Link to comment Share on other sites More sharing options...
matt.b Posted April 17, 2014 Report Share Posted April 17, 2014 I would pull the sub out of the box and push down evenly on the cone and listen for coil rub Link to comment Share on other sites More sharing options...
Rck'nRF Posted April 17, 2014 Author Report Share Posted April 17, 2014 Thanks Matt.b, Just went and done that,smooth as silk,this sub is about 3hrs old.. box has no poly fill/insulation from factory..put some in? Link to comment Share on other sites More sharing options...
jarrius Posted April 17, 2014 Report Share Posted April 17, 2014 How much is the woofer moving when you play it? Are you trying to play low? If so you may be bottoming it out. 2012 Chevy sonic1xSQ HDC3 12 D2RF R1200d 140 square foot of Q-Mat(soon to be installed) 140.2Db sealed on the dash with TL 142 DB sealed on the dash with another meter (was dead on with the TL at a show i was at) 141 on music. strangeduck,on 02 Jan 2014 - 01:39 AM, said: when my car spins out i just put the car in neutral, turn in the direction i want to go and pucker my asshole Link to comment Share on other sites More sharing options...
philrab Posted April 18, 2014 Report Share Posted April 18, 2014 Just throwing this out there; is it possible you're pushing too hard on too small an amp and hearing distortion? I just ask because I'm running an Image Dyanamics ID8 in a fairly small enclosure (middle of the range for that woofer) but I've got quite a bit of extra power to throw at it so I'm not stressing the amp much, and it sounds extremely clean. Even when fairly loud and playing low notes, I never hear anything out of the ordinary from it, it just won't reproduce anything extremely low due to the small size of the woofer and limited airspace in the sealed enclosure. 2015 Toyota Tacoma Build Thread 2007 Mazda 3; 5000K HID's, Kenwood Excelon KDC-X997, Infinity Reference 6.5 comps in front and coaxials in the rear doors, JL 320.4 four channel, Rab Designs built ported enclosure with an SA12, Kenwood monoblock, Redline Leater shift boot/e-brake boot/center console cover, JBR short shifter/shifter bushings/rear motor mount. Build Thread 1996 Mazda Miata: Kenwood Excelon HU, Alpine speaker in the doors, Clearwater (miata specific) headrest speakers. 1994 Mazda Protege: Kenwood Excelon HU, Infinity Reference 2 ways all around, 2x RF Punch 10's in ported boxes. Link to comment Share on other sites More sharing options...
matt.b Posted April 18, 2014 Report Share Posted April 18, 2014 Well it looks p ke it's on the larger end for a recommended enclosure or could be box flex or a loose panel as well Link to comment Share on other sites More sharing options...
PolishThunder Posted April 18, 2014 Report Share Posted April 18, 2014 Are you using a prefab box or did you build a box to the manufacturer recommended sealed size? Link to comment Share on other sites More sharing options...
k3n12ock Posted April 18, 2014 Report Share Posted April 18, 2014 The whole "At 150watts" thing has me confused. How does one figure that it's getting "150 watts"? Anyways, are you wanging on it? You say it's only 3 hrs old and most new subs (most commercial that is) won't really like full tilt being the virgins they are. 05 xB - (2) EVIL 18s - (2) BC3500s - NO WALL Channel 1: http://www.youtube.com/k3n12ock Channel 2: http://www.youtube.com/MrK3n12ock2 Link to comment Share on other sites More sharing options...
Aj11 Posted April 18, 2014 Report Share Posted April 18, 2014 you don't have to break in subs, every sub I've ever owned out of the box i usually put max rated power to it and let it bang! I've never once "broke" in a sub. my type rs included! I've never blown or damaged a sub doing that. my type rs have seen over rated for the last 7 mounths and rated before that. they still sound and act like the day i got them! i have a boy who has a r 15 in a big 4cubic ft box and he had the same crunch noise. he was clipping and boosting the crap out of it! "but it's only a "600w" amp yeaaaaaa and? his gain... you guessed it all the way up his boost?... correct again maxed out. the sub was being extended pass it's limits every time it moved. which wasnt much. set your gains right and see what happens jvc deck stinger 1800 front hc 2000 kinetic rear 2 runs of 1/0g big 3/4 ct 60.4 2 ct 1400.1 ct EXO 15 d1 lots of deadner type r comps front stage 6 kicker tweets rear stage lots of great stuff coming soon ho alt more bats ct comps for front stage more deadner sweet amp rack lots of L.E.D lights new deck (thinking 80 prs, or flip out) Link to comment Share on other sites More sharing options...
PolishThunder Posted April 18, 2014 Report Share Posted April 18, 2014 you don't have to break in subs, every sub I've ever owned out of the box i usually put max rated power to it and let it bang! I've never once "broke" in a sub. my type rs included! I've never blown or damaged a sub doing that. my type rs have seen over rated for the last 7 mounths and rated before that. they still sound and act like the day i got them! i have a boy who has a r 15 in a big 4cubic ft box and he had the same crunch noise. he was clipping and boosting the crap out of it! "but it's only a "600w" amp yeaaaaaa and? his gain... you guessed it all the way up his boost?... correct again maxed out. the sub was being extended pass it's limits every time it moved. which wasnt much. set your gains right and see what happens Excellent point, gains and bass boost are important and can affect a lot. I built a box for two type r 15s and had a similar crunch sound we ended up fixing some stuff with the wiring and power/ground too the amp and it went away but no guarantees that's what fixed it. I personally always break in subs, I just think its too risky to run a lot of power right out of the box but its kind of a personal prefence Link to comment Share on other sites More sharing options...
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