posted
I sold my BP1200.1 to my friend and he put it on his Lanzar Max dvc 15s in a sealed box and I helped him set the gain so it wasn't distorting or bottoming out and about an hour later one of the subs blew when he was driving home.
Here is what blows my mind: He swapped in the old Lighning audio subs in a 2cubic ft box tuned to about 28 hz and hooked them up to the amp without turning down the gain. http://www.carreview.com/cat/car-audio/subwoofers/lightning-audio/PRD_342585_1808crx.aspx These subs are 150 watts and their fs is 45 hz and they have 3 mm of Xmax according to their manual.
He's put about 6 hours of playtime at about 500 watts rms per coil and they still aren't dead yet.
I figured they would have went up in flames after 1 straight hour of playtime.
What do you all think about this?
I guss they do make a lil bit of overloading noise at full volume, but i was suprised either way.
posted
Power does not blow a speaker...distortion does.
If the power is clean a woofer will take a TON of power. I ran some Kove KEW 10's at about 30% over their rated. Ran them like that for months. They NEVER did blow from excessive heat they blew cause the suspension just finally got "tired" as someone put it to me. They started to bottom out on extremes when they didnt before.
So not a huge supprise.
-------------------- Rob, My Ride's http://mysite.verizon.net/proaudio150/ **UPDATED 8/5** Former UsacI 301-600 Pro World Record Holder and PortWars World Record Holder (old rules). -USAC 2001 World Champion and 2001 World Finalist
"Its sometimes the journey thats fun...not the destination." Posts: 8036 | From: Huron,Oh | Registered: May 1999
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posted
Whatever, distortion DOES kill. Try hooking up a MT to a small pyramid amp and pin the sh*t out of it. Guess what happens???? Yup, you guessed it, smoked woofer. I have seen good woofers blown by too little power about 10 to 1 rather than the opposite.
-------------------- Team Custom Team Quake Team Powermaster Team Ascendant/Fi Posts: 514 | From: Canada | Registered: Oct 2000
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There are 2 things that will cause a speaker to blow:
1. to much power (you either exceed the thermal or mechanical limits of the speaker). 2. Defective speaker.
I'm sorry but a group of copper windinds is not smart enough to know the difference between a distorted signal and a clean signal. All it sees is a signal.
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if distortion kills speakers, your speakers would blow everytime nirvana played on the radio. /discussion.
Posts: 8930 | From: over yonder | Registered: May 2001
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Excessive distortion = more power than you think you have = slinky slinky oh what a wonderful toy......
-------------------- Mike Extreme Audio www.ExtremeAudio.org Extreme Van for Sale, complete or empty! Team JBL Team Fi Certified 179.3 dB 2005/06/07 dB Drag Extreme 3-4 World Champion 3 Time Deathmatch Participant 2004/05/06/07 IDBL World Record Holder 2004/2005 MECA World Record Holder 2006 USACi B&K WR SuperMod Ext.
Posts: 1344 | From: Mechanicsville, Va USA | Registered: Nov 1999
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posted
^that I agree with. Clipping your amplifier produces additional power---and that additional power can cause you to exceed the thermal or mechanical limits of the speaker. The fact the signal is distorted means nothing.
EDIT: Also--to little power does not blow anything. If that was true, your speakers would blow everytime you turned the volume down.
-------------------- There are 2 teams in the NFL. The Broncos and the rest. I love the Broncos, and hate the rest. How much you wanna make a bet I can throw a football over them mountains?... Yeah ... Coach woulda put me in fourth quarter, we would've been state champions. No doubt. No doubt in my mind. Posts: 831 | From: Valdosta, GA | Registered: May 2004
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^^^X2 Very good info. I remember the "science of Sound" seminar JL gave as part of a company d ealer training a few years back. Most informative 2hrs I can remember in a long while.
Andy,your right...halo1 is outthere
-------------------- Chuck Whitney Jr. '95 VW Jetta III 2008: World Finals:Street Stock A - 4th place Regional 2009: ??
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