I am not saying your responses are sarcastic at all. Neither are mine. Have you seen some of the other responses in this thread? I hear you about different jobs between the hpf and lpf. He has already blown 5 drivers so ... I was trying to say that his 12 inch sub should only produce the notes between the crossover (whatever it is set at) and 30 Hz. No only do the frequencies below 30 not do anything audibly but they can be a real drain on his amps power and could blow the driver ... Am I right on those two fronts?
Enjoy the benefits of a premium membership!
Upgrade Account
-
TalkBass has been independent since 1998. Add your voice.
Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
Join free Log in
Want zero display ads or expanded classifieds tools? Compare plans.
Blew my 12".....AGAIN!!!!!
- Thread starter pb9717
- Start date
I am not saying your responses are sarcastic at all. Neither are mine. Have you seen some of the other responses in this thread? I hear you about different jobs between the hpf and lpf. He has already blown 5 drivers so ... I was trying to say that his 12 inch sub should only produce the notes between the crossover (whatever it is set at) and 30 Hz. No only do the frequencies below 30 not do anything audibly but they can be a real drain on his amps power and could blow the driver ... Am I right on those two fronts?
My suggestion would be for the OP to buy several more of the same 12 he's been destroying and train a group of red jump-suited roadies to swap the driver out between songs like a pit crew swapping tires on a formula car. Air wrench and all.
Wouldn't solve the problem but it would give the audience something to talk about.
Wouldn't solve the problem but it would give the audience something to talk about.
BurningSkies
CRAZY BALDHEAD
- Feb 20, 2005
- 27,956
- 20,350
- Disclosures
- Endorsing artist: Dingwall Guitars
"The Pit Crew" sounds like a great name for a really mediocre classic rock cover band.
If you have blown five 12" drivers, and they are quality drivers, that should be telling you that you're doing something wrong. Personally I see no reason to biamp in this day and age, assuming there is a high frequency driver on the cab. I would have to assume you're just sending too much low frequency energy to the 112 and it's doing what drivers do when they get too much LF energy.
Keep in mind that it might not be too much watts. The wattage ratings on speakers are just about how much electrical power you can push through the voice coil before it melts. There are physical excursion limits as well--so if you have your bass knobs anywhere in the chain--your active bass, the bass head/preamp, or the amp doing the 100 hz or below turned up too loud--you can push the speaker beyond it's physical limits and destroy it without technically exceeding the wattage rating of the driver.
To fix this, I would say "turn the low frequency energy down". Turn down your bass knobs, or get a high-pass filter to get rid of everything below 30 or 40 hz, which are only rumble in a live environment. I betcha you'll stop going through drivers.
Tom
Keep in mind that it might not be too much watts. The wattage ratings on speakers are just about how much electrical power you can push through the voice coil before it melts. There are physical excursion limits as well--so if you have your bass knobs anywhere in the chain--your active bass, the bass head/preamp, or the amp doing the 100 hz or below turned up too loud--you can push the speaker beyond it's physical limits and destroy it without technically exceeding the wattage rating of the driver.
To fix this, I would say "turn the low frequency energy down". Turn down your bass knobs, or get a high-pass filter to get rid of everything below 30 or 40 hz, which are only rumble in a live environment. I betcha you'll stop going through drivers.
Tom
Spot on!! No sense in struggling to reproduce what is inaudible and especially what the driver is incapable of producing.
If you have to state such, then you probably......
It's like the dude who has to constantly remind people he's discussing things with that he's a PhD.
That was stated as a response to someone who told me that I probably didn't know that a 15" speaker wasn't truly 15"...
Next time, quote all of it.
I've dropped out of this thread because everybody is dug into their positions, and nobody is helping the OP, and his thread is polluted enough.
.
- May 16, 2009
- 625
- 743
- Disclosures
- Former Manager, Bass San Diego
The tuning of the cab could have something to do with it. If the frequencies running through the cab are regularly below a certain threshold (which I suspect is happening), the cone vibrating at below a certain rate can causing wearing and tearing that can leave it open to blowing more easily. The problem could be fixed by getting a new cab for the low end of your biamp rig, OR possibly by running a high pass filter on the low end (sounds counter intuitive) to roll out the extra low frequencies that could wear out the speaker. [/$0.02]
Blown 5 times? Seems a little excessive. Has to either be a wiring issue, a wattage issue, or an ohm rating issue. Also, like most people on here have already stated, go with a 15"! 25 HZ to .1 KHZ is a good range for a 12", but seems it must be driving super hard to be blown out. Most 12's should handle around 400w at 4 ohms, whereas most 15's can handle the same ohm rating, but with 600w. Also, with a 15" you get that 20 HZ to .1 KHZ range.
BurningSkies
CRAZY BALDHEAD
- Feb 20, 2005
- 27,956
- 20,350
- Disclosures
- Endorsing artist: Dingwall Guitars
But there were some good funnies and fights in there too, right?
ARE YOU NOT ENTERTAINED?!?!?
I think I accidently started it by using the words "surface area."...and an 810 is equal to 3 15's.
