BillFitzmaurice.info

Is there a formula for figuring out how much voltage a driver can tolerate?

I am putting together a sub box for my idiot little brother, and he is insisting it be done by friday, so I don't have time to build him some tubas. I would like to set up the amp's gain so that when the reciever's volume is maxed out, the amp's output voltage is at the max of what the driver can take, so when his dumb buddies and he crank up the dubstep, the woofers don't go riiiiiiiiiiiiiiiiiip.

The driver in question is an Infinity 1260w

pond wrote:Is there a formula for figuring out how much voltage a driver can tolerate?

No. You may only do so with software modeling of the cab/driver combination.

I would like to set up the amp's gain so that when the reciever's volume is maxed out, the amp's output voltage is at the max of what the driver can take, so when his dumb buddies and he crank up the dubstep, the woofers don't go riiiiiiiiiiiiiiiiiip.

It won't work in any event. Only a true limiter will.

I've been pondering this idea as well. Would a miniDSP or something else work for limiting? A miniDSP can also be used for a crossover and EQ as well.

Ahh I see..

Hopefully I can pound the concept of 'when it starts to sound like mud, TURN IT DOWN' into his head haha..

bassmonster wrote:I've been pondering this idea as well. Would a miniDSP or something else work for limiting? A miniDSP can also be used for a crossover and EQ as well.

It's coming. Middle of the year.

http://www.eminence.com/d-fend/

LelandCrooks wrote:

bassmonster wrote:I've been pondering this idea as well. Would a miniDSP or something else work for limiting? A miniDSP can also be used for a crossover and EQ as well.

It's coming. Middle of the year.

http://www.eminence.com/d-fend/

Whoaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

That is bananas!

LelandCrooks wrote:

bassmonster wrote:I've been pondering this idea as well. Would a miniDSP or something else work for limiting? A miniDSP can also be used for a crossover and EQ as well.

It's coming. Middle of the year.

http://www.eminence.com/d-fend/

Any estimate on pricing?

I'd imagine this sort of thing would have to be factory-installed, because how are you going to figure out how to program the limits correctly for a custom application?

pond wrote:I'd imagine this sort of thing would have to be factory-installed, because how are you going to figure out how to program the limits correctly for a custom application?

When I get a sample I'll figure out how it would be set for the various projects.

In it's current configuration it sets by voltage. One the changes requested by many was to also set by wattage.

The software is very much like setting a compressor. Very simple.

LelandCrooks wrote: One the changes requested by many was to also set by wattage.

To be expected, given the industry fixation on watts and its consistent refusal to educate consumers on why watts don't matter while volts and displacement do. Luckily, we're not part of the industry.

LelandCrooks wrote:In it's current configuration it sets by voltage. One the changes requested by many was to also set by wattage.

Awesome.

What I love is that Eminence will add what is the equivalent of a randomized progress bar to placate people who don't realize they are setting their limiter to control voltage input. Keeping the ignorance train rolling.

I can't wait for this device to come out.

Bill, did you get one of these yet?

I got a prototype two years ago. The retail version goes for $199. That's not cost effective when you can get limiting built into a $399 amp or a $299 crossover or a $199 stereo compressor/limiter.