1" Driver with 4.5mm of X-Max?

[tomzarbo]

http://www.parts-express.com/pe/showdetl.cfm?partnumber=299-014

How did I miss this one, I don't know.

I know it's not a tweeter, but what do you call a 1" driver with 4.5mm of X-Max?

I'm not sure what I'm looking at here, but it's intriguing. The cost is a bit high, but not outrageous.

What could I use a couple of these things for? Get two of the Dayton 5/8" tweeters and build the worlds smallest MTM? I can just picture this little 1" driver pumping away like it's a 15" subwoofer.

I don't know where I'm going with this, but I may have to purchase a few to play with.

Ideas?

TomZ

[ligs]

Re: 1" Driver with 4.5mm of X-Max?

The vc length is 3 mm and magnetic gap is 6mm. The conventional way of calculating Xmax is the difference of the two divided by 2. In this case I come up with a number of 1.5 mm. Am I missing something?

[joeybutts]

Re: 1" Driver with 4.5mm of X-Max?

Damn you Tom...that does look like fun to mess with.....

MTM desktop? MMTMM desktop?

[ameuba10]

Re: 1" Driver with 4.5mm of X-Max?

Could make a pretty wild destop array.

[Chris Roemer]

Re: 1" Driver with 4.5mm of X-Max?

At 5w (thermal limit) they reach 1.5mm near 125Hz. At full power, they NEVER even reach 4mm, running near 3mm at 40Hz.

[jheizer]

Re: 1" Driver with 4.5mm of X-Max?

HAha a super mini MTM looks like fun. Or even a TM.

[billfitzmaurice]

Re: 1" Driver with 4.5mm of X-Max?

The vc length is 3 mm and magnetic gap is 6mm. The conventional way of calculating Xmax is the difference of the two divided by 2. In this case I come up with a number of 1.5 mm. Am I missing something?

It's an under-hung coil. You use your method with an over-hung coil. This was probably measured with Klippel at 10%THD.

[DIYNut42]

Re: 1" Driver with 4.5mm of X-Max?

Damn you Tom...that does look like fun to mess with.....

MTM desktop? MMTMM desktop?

+1... Idk why I click on threads like this, lol. An MTM that requires no internal volume, or rear wave open baffle compensation? I'm already looking at amp boards... http://www.parts-express.com/pe/show...number=320-329

[joeybutts]

Re: 1" Driver with 4.5mm of X-Max?

I would love to see a super slim/small mmtmm with these......hint hint to you designers......:D

[ryanbouma]

Re: 1" Driver with 4.5mm of X-Max?

I would think a better application would be used as a tweeter. No high pass (to save money). Get a pair of these and a pair of very ineffecient small woofers. Probably something Tang Band. A couple very small plate amps that have a low pass at 200hz. Fit everything into a small box to flank a computer monitor. Power the "tweeter" portion with a lepai or something. Point source sound that's full range in a 7L box?

[bwaslo]

Re: 1" Driver with 4.5mm of X-Max?

that looks a lot like the tweeter that Linkwitz used in his Pluto speakers.

[DIYNut42]

Re: 1" Driver with 4.5mm of X-Max?

Here's a page with Auras' spec sheet (downloadable) that has the FR. It shows a sudden peak right before 2K that remains constant, then a dip after 15K. Look how flat it stays though until it drops off a little before 200 Hz. That's quite a claim, but it looks like it was measured around 75 Db.

Also, kudos to PE. They have Mad beat on the price by close to $3.

[DIYNut42]

Re: 1" Driver with 4.5mm of X-Max?

that looks a lot like the tweeter that Linkwitz used in his Pluto speakers.

It looks a lot like it, but I think the Aura Whisper is used in the Pluto design.

[Brian Steele]

Re: 1" Driver with 4.5mm of X-Max?

The spec sheet says 4.5mm Xmax peak to peak
Xlim appears to be 9mm peak to peak

[bolland83]

Re: 1" Driver with 4.5mm of X-Max?

Subwoofer for a model car maybe? Throw a pair in the trunk of a RC car, power it with a DTA-2, and pump music to it with a Bluetooth module.