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03-08-2005, 11:33 AM
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#1 of 55 
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Member
Join Date: Jul 2003
Local Time: 11:25 PM
Local Date: 09-06-2008
Posts: 401
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WTF? AvP just melted my SVS!
So I was watching Alien vs. Predator. My SVS CS+ 20-39, powered by a crown CH2 was pounding away... It was loud, but not reference level. And then, that big explosion when the bomb goes off. Sub goes "pop-pop-pop". I reach for the volume control to turn it down, but it's too late. The driver is totally melted!!
Anybody else ever melt one of these things? I've expected better from SVS.... I've never run the thing into distortion, I've played it loud, but not been abusive....
--Chris Everett
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03-08-2005, 11:51 AM
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#2 of 55
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Parker Clack
Owner
Location: KC MO
Join Date: Jul 1997
Local Time: 01:25 AM
Local Date: 09-07-2008
Posts: 38,609
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Chris:
I would send Ron or Tom an email and they will fix you up.
Parker
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03-08-2005, 12:04 PM
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#3 of 55
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Join Date: Nov 2003
Local Time: 06:25 AM
Local Date: 09-07-2008
Posts: 5,468
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Do you run you sub(s) hot? Sure sounds that way. Interesting. Thanks for the post. Not many around here melting their SVS drivers.  So yours may have been an odd exception. Not to familure with that amp, but it sounds like it could provide massive peak dynamic power for sure.
I'm hard on subs, I'm afraid to change from my Velo 15", just because it has been so reliable. And I am brutal on them in general, I run hot to rediculously hot on my sub.
I'm still inclined to think you got a rare lemmon driver, that made it through QC. |
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03-08-2005, 12:10 PM
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#4 of 55
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Member
Join Date: Sep 2002
Local Time: 02:25 AM
Local Date: 09-07-2008
Posts: 1,322
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Sounds like a great excuse to upgrade to the PB12-Ultra/2 in my opinion  Good luck melting that monster!
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03-08-2005, 12:12 PM
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#5 of 55
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Member
Join Date: Aug 2004
Local Time: 01:25 AM
Local Date: 09-07-2008
Posts: 111
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John,
I'm sort of a newbie around here, I'm not familiar with the term "running your sub hot." What exactly does that mean?
Sorry for the naive question.
---Bill
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03-08-2005, 12:15 PM
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#6 of 55
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Ilkka
Member
Location: Finland
Join Date: May 2004
Local Time: 08:25 AM
Local Date: 09-07-2008
Posts: 270
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It means that you are running your subs level higher than your mains. For example with AVIA these levels (if calibrating at reference level) are 85db for mains and 82-83dB for sub (using c-weighted meter). If you calibrate your sub say at 88dB, then it's 5-6dB hot.
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03-08-2005, 12:19 PM
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#7 of 55
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Member
Join Date: Jul 2003
Local Time: 11:25 PM
Local Date: 09-06-2008
Posts: 401
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I run probably 5-8 DB under reference. Yeah, I warm the things up, but that's why I bought the SVS! The CH2 is close in power output to a K1, plenty of juice, but it should not be enough to melt something on a short peak.
I've already sent an e-mail to SVS techsupport.
Everything is calibrated to reference.
--Chris Everett
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03-08-2005, 12:25 PM
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#8 of 55
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Member
Join Date: Aug 2004
Local Time: 01:25 AM
Local Date: 09-07-2008
Posts: 111
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Thanks Illka! That makes sense.
If you don't mind me asking, what are the risks? I have an SVS PB12+ paired with Axiom speakers and I tend to have the subwoofer volume turned up quite a bit (I watch a lot of movies, and I enjoy a lot of deep bass.) But I hadn't seriously considered the possibility of ruining my sub.
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03-08-2005, 12:40 PM
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#9 of 55
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Member
Join Date: Nov 2003
Local Time: 01:25 AM
Local Date: 09-07-2008
Posts: 623
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I wouldn't get all up in arms about it...........one person's problem, which the cause hasn't been determined, shouldn't alarm everyone else into turning down their subs. As long as you're playing it distortion free, you should have no problems.
I'm sure SVS will take care of things, but is "melted" an exaggeration? Or what part actually melted? Maybe the amp somehow spiked it's power output......do you have any kind of LF filter on it?
If the best advice is "listen for yourself", then why offer your opinion?
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03-08-2005, 12:57 PM
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#10 of 55
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Join Date: Nov 2003
Local Time: 06:25 AM
Local Date: 09-07-2008
Posts: 5,468
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I agree, as I stated, I think somehow the driver was a bit of a lemmon. But other causes are totally plausable as well. Nothing to get alarmed about. I run my subs by preference, if it can't take the heat, I need a different sub. I thrashed three JBL subs before getting my Velodyne.
I would think an SVS would / could take it for sure. Gotta watch those pro audio amps a little though. They can be running along at 100 watts sustained and when a good peak comes along, the sky is the limit with them. This is a good thing from a performance angle, they can be harsh on stuff geared for home audio though for sure.
All speculation at this point though.
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03-08-2005, 12:58 PM
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#11 of 55
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Member
Location: San Jose, Ca.
Join Date: Jun 1999
Local Time: 11:25 PM
Local Date: 09-06-2008
Posts: 11,228
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If anything, you cooked a voice coil. This doesn't happen because of too much power, but too little, during a peak. If you are listening at -5 fro | |
