Hmm, not having a clue how all this interacts.........regardless, 'my' [customer no service] AT&T DSL has been such a poor performer overall since day one [flat out scam] that it wouldn't surprise me if it was an issue between the two for whatever reason.
After ~14 yrs of being behind the '8 ball' financially, I'm finally able to afford more speed, etc., but my choices are AT&T Uverse and Comcast Xfinity, which in my immediate vicinity is even less value/$$ than what I have, so no point in wasting my money. The major downside is that the same reason I was going to leave the forums way back then has been slowly forcing me off again since there's increasingly more ads/whatever here and on many other websites that causes the computer's processor to run WFO, ~ locking up it up until I can kill the pages from the Windoze Task Manager window.
GM
Thanks, I got that, but there's different brands, models listed on Google and none were 4.5"..........
GM
GM
It must be made in a secret location in a land far far away. He could tell you, but he'd have to... well you know. 😉
The ones I currently have from Overkill Audio, are I believe a tweaked version of the 4.5" Neo BMR unit from CSS, link below.
http://www.cotswoldsoundsystems.com/specifications/CSS_Specification_Sheet_BMR85DD_N4Y_r1.pdf
Naim is the biggest manufacturer to use the BMR driver in the Ovator series, and Cambridge Audio are using a cheaper version in their AeroMax.
Wilmslow Audio produced a kit using the 4.5" version. Review here
One question, why does everyone quote reply to responses, clutters up a thread with repeated information....
Second, any tweaks anyone would make to this preliminary design?
I need to develop a test playlist to evaluate my speakers, awaiting a 5m optical cable so I can run some sweeps and test tones etc from a good listening position.
Currently in my lounge is Mark Audio Alpair 7.3 bookshelf. 1 A10.3 Pensil design, 1 300Hz conical Horn with Radian 850pb, and a pair of Beyma (10BR60) woofers in big 70L cabients.
And a pair of the BMR's currently running 200Hz plus above the Beyma's, seem great, relatively neutral, will do a side by side with the Alpairs tomorrow.
http://www.cotswoldsoundsystems.com/specifications/CSS_Specification_Sheet_BMR85DD_N4Y_r1.pdf
Naim is the biggest manufacturer to use the BMR driver in the Ovator series, and Cambridge Audio are using a cheaper version in their AeroMax.
Wilmslow Audio produced a kit using the 4.5" version. Review here
One question, why does everyone quote reply to responses, clutters up a thread with repeated information....
Second, any tweaks anyone would make to this preliminary design?
I need to develop a test playlist to evaluate my speakers, awaiting a 5m optical cable so I can run some sweeps and test tones etc from a good listening position.
Currently in my lounge is Mark Audio Alpair 7.3 bookshelf. 1 A10.3 Pensil design, 1 300Hz conical Horn with Radian 850pb, and a pair of Beyma (10BR60) woofers in big 70L cabients.
And a pair of the BMR's currently running 200Hz plus above the Beyma's, seem great, relatively neutral, will do a side by side with the Alpairs tomorrow.
I tend to like to quote at least selected sections of a previous post so it's clear exactly to whom and what points my particular comments are addressed .
I'd personally rather scan a few redundant lines to avoid reading or being taken out of context - particularly when there's a time lag between the subject posts.
I'd personally rather scan a few redundant lines to avoid reading or being taken out of context - particularly when there's a time lag between the subject posts.
Manger and BMR's
Hi Louis,
Looking forward to hearing your thoughts on the BMR's once you have a few days of high volume music and bass through them.
Did you go with my recommendation for 3 to 4 litres sealed box with good internal damping ie Twaron /Angel Hair plus the denser cabinet wall damping?
I assume active crossover??? Please avoid any passive crossovers as they mess up the phase / time domain before the sound even reaches the driver...!
By the way the reason I never post BMR measurements ( or Manger driver) is the drivers are not conventional pistonic drivers and they do not model the same as pistonic drivers.
The beauty is in their time domain / phase coherence, low energy storage and horizontal & vertical dispersion....
Most guys ( the ones with 50 years of cones and domes and zero BMR hours....!) jump on some aspect of the TS parameters which have no bearing or relevance to the BMR's sound quality and say " hey it don't measure as good as my old XYZ drivers from my daddies radiogram so its junk...."
Of course they may well be exceptions to my sweeping statement...😉
Cheers
D.
Hi Louis,
Looking forward to hearing your thoughts on the BMR's once you have a few days of high volume music and bass through them.
Did you go with my recommendation for 3 to 4 litres sealed box with good internal damping ie Twaron /Angel Hair plus the denser cabinet wall damping?
I assume active crossover??? Please avoid any passive crossovers as they mess up the phase / time domain before the sound even reaches the driver...!
By the way the reason I never post BMR measurements ( or Manger driver) is the drivers are not conventional pistonic drivers and they do not model the same as pistonic drivers.
The beauty is in their time domain / phase coherence, low energy storage and horizontal & vertical dispersion....
Most guys ( the ones with 50 years of cones and domes and zero BMR hours....!) jump on some aspect of the TS parameters which have no bearing or relevance to the BMR's sound quality and say " hey it don't measure as good as my old XYZ drivers from my daddies radiogram so its junk...."
Of course they may well be exceptions to my sweeping statement...😉
Cheers
D.
Thanks for the info! Seems I already know about them from NXT's time, so can be mostly treated like a poorly aligned compression loaded WG, which considering the relatively low, limited XO BW 'window' makes it easy to blend to a woofer with a similar polar response in the overlapping BW.
Don't remember any tweaks from BMR's early days though.
GM
Spent all day listening to them. I really like them, haven't done side by side test, but definitely keen to develop some nice test cabinets.
http://www.christienellis.co.uk/images/stories/ce/hificritic_trk1.pdf
http://www.christienellis.co.uk/images/stories/ce/hificritic_trk2.pdf
Hi,
The HiFi Critic design is a classic case of taking measurements and using them sensibly,
though the whole x/o shebang would be better done actively, a lot of it is EQ tweaking.
Also note a small BMR front face will require more BSC voicing than used for the TRK.
rgds, sreten.
http://www.christienellis.co.uk/images/stories/ce/hificritic_trk2.pdf
Hi,
The HiFi Critic design is a classic case of taking measurements and using them sensibly,
though the whole x/o shebang would be better done actively, a lot of it is EQ tweaking.
Also note a small BMR front face will require more BSC voicing than used for the TRK.
rgds, sreten.
Time and time again, Seas Excel seem to come up as one of the best range of speakers and Accuton at the extreme high end. Would these seem like worthy routes to look into?
If I wanted to keep a shape similar to above, tapering, (aesthetically pleasing, reducing parralel facing sides, natural tapering, simply changed in internal volume etc) how best to get from the BMR's lowest note it can produce with ease (200Hz seems about right) to at least 40HZ.
Current doodles for the bass cabinet include:
3 x 8" Woofers
6" Mid/Woof & 10" woofer
6"" Mid, Side firing 12" Woofer
If I wanted to keep a shape similar to above, tapering, (aesthetically pleasing, reducing parralel facing sides, natural tapering, simply changed in internal volume etc) how best to get from the BMR's lowest note it can produce with ease (200Hz seems about right) to at least 40HZ.
Current doodles for the bass cabinet include:
3 x 8" Woofers
6" Mid/Woof & 10" woofer
6"" Mid, Side firing 12" Woofer
I wish all your guys (&girls?) would club together and write a brief 'speaker building manual' I guess I should buy a few books and read a bit more, but simple information like, driver beaming and how big and how low a frequency would allow for side firing woofers, seems hard to find...
A low XO. I bet tweeter/midbass is also < 1/4wl. That guideline gets broken all the time.
dave
They're a focused array, so has a fairly specific 'sweet spot'. This is all I could find in a quick search, but notice the two chair listening position............
GM
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