Hyperbole...CA versus Bose!

You probably already know the answer(s).

The BMR drivers do appear to be much better than what Bose uses, so one would expect them to sound better. But the Cambridge ad copy doesn't suffer from any shortage of hype either.

I guess it depends on which 'full range' driver you are comparing your product to. Bose? - I suppose.

Puffery as a legal term refers to promotional statements and claims that
express subjective rather than objective views, which no "reasonable person"
would take literally. Puffery serves to "puff up" an exaggerated image of
what is being described and is especially featured in testimonials.
-- http://en.wikipedia.org/wiki/Puffery

Minx is kind of a dumb ass name. Something I'd expect if Justin Bieber were marketing speakers to pre-teen girls.

Nahhhh...it's a chick speaker.

They can't. And you're correct... pay more attention and/or let common sense kick in.

I call fowl!

Foal?

Yes, I hear that Bose have a foal sound.

You're such a little minx!

They can't, period. For adequate low frequency output a driver needs large displacement. For adequate high frequency dispersion the driver must have a small radiating area. You can't get both from the same driver. Claims to the contrary are just that, claims. And as neither of these companies provides supporting data they're unfounded claims at that.

Oh, Bill, you just wish that you could break the physical laws like they can. You are jealous that Bose can make a THT that's the size of a shoe box.

Psst... I think they use Wonkavision, but don't quote me on that!

Not full range to me
http://www.hometheater.com/content/c...-labs-measures

No. That was Fawn. She died in a kiln accident.

Heard the kiln accident happened when the Germans bombed Pearl Harbor

There is some unique science behind the BMR


So while they aren't ever going to be full range, in theory they are going to sound better than what you get from a Bose cube

Do they provide measurements to support the propoganda?

That measurement don't look too bad. The Bose has a big gap at 150 to 200 hz and the top is rolled off 15k or something

Axial frequency response is only 1/3 of the equation. In the highs off-axis response is critical, in the lows the displacement is. Flat response to 12kHz isn't of much use if you can't hear that 12kHz at 30 degrees, nor is flat response down to 120Hz if the driver lacks the displacement to give more than 90dB levels.

Personally I would not use drivers like these in my main system but I think larger drivers would work out O.K. for a secondary casual system, like the NOS (new old stock) Radio Shack 5.25" "full range" drivers I have been playing around with. Highs are a bit muted but are pretty smooth and midbass is decent and IMO like the FR drivers in better table radios like those from Tivoli and Boston Acoustics, while I believe they are not highly accurate they are easy to listen to for a long time.

I can see why there is a whole area of DIY speaker building dedicated to building FR-based speaker systems, using drivers from three inches all the way up to eight(!) inches, though 4 and 5 inches seems to be the "sweet spot" for most FR fans since these can produce acceptable bass if the proper enclosure is utilized. The other signficant reason FRs are favored is the fact there is no crossover which, if it is not very carefully designed, can cause audible sonic artifacts.

For a lot of FR fans though, they use a subwoofer to augment the lowest bass and since the xover does not occur in the midrange spectrum, that avoids affecting those important frequencies. And for larger FR drivers, many use a "helper" tweeter, usually crossed over way up at 8 or 10kHz again avoiding the midrange band. A simple 6dB per octave xover is usually used at such a high frequency, commonly in the form of one capacitor to minimise xover artifacts.

Fostex is a very popular brand of FR drivers.

Parts-Express sells many FRs, including budget stuff like this 8" driver many pair with a inexpensive soft-dome tweeter.

BMR is a technology that Cambridge licensed from HiWave who owns the patent

http://www.hi-wave.com/products/audi...r_products.php

So you can blame Hiwave for their impressive sounding name, not Cambridge Audio.

You can buy their drivers for your own DIY project
http://www.parts-express.com/wizards...20Technologies

Naim also uses a BMR driver and provides some analysis/measurements of the behavior of this driver and how it works.

http://www.music-line.biz/cms/filead...ovator_bmr.pdf

Personally I think comparing Bose cube drivers to a BMR driver is unfair. BMR is a new type of hybrid driver and BMR is actually an accurate description of how it works.

It is. Better than the Bose drivers yes, perhaps by a wide margin, but still no three inch driver has the dispersion of a 1/2 inch dome or the output of a six inch midbass.