[Doublej]

29Hz @-3dB, 89dB efficiency from what looks like two 4" drivers. Is that possible from any sized box?

http://websites.uk-plc.net/Ultra_Resolution_Loudspeakers/focalstage-floorstander-38825.htm

[Diamond Dog]

Transmission line speaker w/ similar spec to my PMC fact.8's ( also transmission line ). The fact.8 cabinet is a bit taller, narrower and deeper with two 5.5" woofers and they do go pretty damned low...surprisingly low from what looks like a pretty unassuming speaker. Don't know much at all about these, though.

D.D.

[richidoo]

Yes but it will have lousy LF transient response.  I had Gemme Katanas using this principle, bass clarity did not match the fine mid/treble.

[ejfud]

That looks like the new Jordan driver, and if it is, they can play low.

[Vapor Audio]

Of course it's not possible, use your common sense guys.  Manufactures take liberties with bass extension and sensitivity specs more than anything.  That extension might be possible with 80-82db sensitivity, and the sensitivity might be possible with 50hz F3, but not both. 

[James Romeyn]

Speed of sound 1130fps/29 Hz = 38.97' wavelength. 

Do you see two 4" cones producing 39' wavelengths at moderate volume in a domestic space?  Maybe with a 12 dB peak from a mode @ the same frequency.

Why don't they make small tubas and double basses?   

[planet10]

That looks like the new Jordan driver

If it is, it is closer to a 5 1/4"driver. Looks like it.



84 dB 1w, 2 will be 87 dB/1W

dave

[JLM]

E. J. Jordan drivers have been notoriously exaggerating bass specifications for decades.  Now they've added an ambient high frequency unit (what around here we call a tweeter).  Too bad, because from what I've listened to, their old drivers sounded good.  And I've always wondered how two different driver locations can be ideally located along the length of a transmission line.   


Of course they're not the only ones to exaggerate.  Nearly every tiny/single driver speaker vendor pushes specifications, but at least most openly qualify them:  in-room (whatever that means), - 6 dB, 'at lower output' (yeah like 20 dB lower).


I'm only aware of one full range driver (F3 = 30 Hz, F0 = 20,000 Hz, 90 dB/w/m), the Fostex F200A:

http://www.madisound.com/loudspeaker_specifications/f200a.pdf

I have them built into Bob Brines T18-F200 transmission line cabinets (the pic is my pair) with Bud Purvine EnABL treatments (that Bud did himself):

http://brinesacoustics.com/Pages/T18-F200/Main.html

[poseidonsvoice]

Of course it's not possible, use your common sense guys.  Manufactures take liberties with bass extension and sensitivity specs more than anything.  That extension might be possible with 80-82db sensitivity, and the sensitivity might be possible with 50hz F3, but not both. 

Speed of sound 1130fps/29 Hz = 38.97' wavelength. 

Do you see two 4" cones producing 39" wavelengths at moderate volume in a domestic space?  Maybe with a 12 dB peak from a mode @ the same frequency.

Why don't they make small tubas and double basses?   

Exactamundo! 

There are a plethora of "tricks" that high end marketers use on the unscrupulous public...

Best,
Anand.

[andy_c]

Ooh, it has a monogram!    Did Jameson Davenport Briggs IV have a hand in its design?

[Folsom]

Yes, the box is large, ported.

However it'll lack some of the impact that larger drivers can provide.

[JerryLove]

The fact that their marketing calls a pole cap a "phase plug" is not a good thing.

MLTL's are impressive (look at the LF extension on the Salk SCST), but I'm thinking this speaker is more hype than truth.

[Folsom]

It probably won't "entertain" you at those frequencies, even if it goes there.

[Letitroll98]

Note that a post by the manufacturer was not approved as it went pretty far over the top promoting the product after answering a few direct questions.  We don't edit posts so the actually relevant info was baby thrown out with the bathwater.  If the manufacturer would like to read the industry guidelines posted in the About/Help section, http://www.audiocircle.com/index.php?action=about and repost sans the promotional info I will gladly approve it. 

[Kevin Warne]

Hi,

My reply has been moved to the Industry Introductions section apparently.

Kevin
Acoustic Insight

[JohnR]

Geez, just post the link: http://www.audiocircle.com/index.php?topic=118815.0

[geowak]

Almost every  manufacturer makes claims that cannot be backed up. Most fall short of what they advertise. Some are funny. www.coconut-audioshop.com/ comes to mind.

[Rick Craig]

A simple nearfield bass test will tell you whether a company is telling the truth. Some of the TL specs quoted by manufacturers would require huge resonant peaks to get anywhere close to what is claimed for bass extension.

[James Romeyn]

Almost every  manufacturer makes claims that cannot be backed up. Most fall short of what they advertise. Some are funny. www.coconut-audioshop.com/ comes to mind.

Boy, that is a funny link!  If that's not a comedy mocking website then maybe the "futurists" are right and this IS Armegeddon!  The audiophile version of "The Onion" "news" network, apparently. 

I ordered several items forthwith, and shall order more soon!  Who can resist "saving" $350k?  I'll donate all my savings to charity and suggest you do likewise! 

</sarc off>

[Kevin Warne]

Almost every  manufacturer makes claims that cannot be backed up. Most fall short of what they advertise. Some are funny. www.coconut-audioshop.com/ comes to mind.

Good point and couldn't agree more, but it's not just manufacturers unfortunately. The magazines, reviewers and retailers are nearly all in on the game. Common audio lies summarised below:

http://www.theaudiocritic.com/downloads/article_1.pdf

Kevin