+ Reply to Thread
Page 2 of 4 FirstFirst 1234 LastLast
Results 11 to 20 of 32

Thread: Elliptical Speakers. Why Are They No Longer Used in Hi-Fi?

  1. #11
    Join Date: Mar 2014

    Location: West Wales

    Posts: 109
    I'm malcolm.

    Default

    Quote Originally Posted by Barry View Post
    Speakers using more than one drive unit were regarded as 'professional' and were, I believe, not subject to purchase tax.
    It was those with over 2 drivers - hence the BC1 had a super tweeter 'to avoid purchase tax'.
    malcolm ("You can't shine if you don't burn" - Kevin Ayers)

    If what I'm hearing is colouration, then bring on the whole rainbow

  2. #12
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,643
    I'm Jez.

    Default

    It may well be that 3 unit speakers were automatically "professional" for tax purposes but it also depended on woofer size. A 2 unit speaker with at least one dimension of 12" in the drive unit was it seems tax exempt and it is said this is the reasoning behind the KEF B139.

  3. #13
    Join Date: Apr 2012

    Location: Southall, West London

    Posts: 30,152
    I'm Geoff.

    Default

    Quote Originally Posted by Arkless Electronics View Post
    It may well be that 3 unit speakers were automatically "professional" for tax purposes but it also depended on woofer size. A 2 unit speaker with at least one dimension of 12" in the drive unit was it seems tax exempt and it is said this is the reasoning behind the KEF B139.
    Not sure about that Jez. The B139 was a reduced size version of an older and much larger bass driver. Think it was the B1814 or something like that, it was damn big anyway.



    Last edited by walpurgis; 28-09-2017 at 14:30.
    Mr. Tact!

    "when common sense, logic and plausibility are ruled out. All that remain are lies and foolishness"


    Gear: MMs/ADCs/Low output MC's/One rare Japanese SUT/one scarce British phono stage/various tonearms/two hefty Japanese DD TT's/hefty Japanese BD TT/smaller Japanese BD TT and small British BD TT. One CD transport/3 CD players/2 jitter buster/2 DACs/Valve buffer. One MD deck. One tuner. Two TVC pre-amps/two valve pre-amps/solid state pre-amp/passive pre-amp. Current dumping power-amp or either of two Class A SS power-amp or Class A EL34 valve monos or big Japanese (part Class A) integrated. Big dual concentric speakers/Smaller dual concentric speakers/two way British compacts and full range speakers, amongst others. And too much more to list!

  4. #14
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,643
    I'm Jez.

    Default

    Quote Originally Posted by walpurgis View Post
    Not sure about that Jez. The B139 was a reduced size version of an older and much larger bass driver. Think it was the B1814 or something like that, it was damn big anyway.



    Oh I'm well aware of the earlier incarnation of it yes. There was even a 2 way bookshelf with just a B139 and T27!
    As far as purchase tax anomalies go well I don't know the full SP and it seems lost in the mists of time but there are many references I've seen over the years, some no doubt apocryphal, of "more than 2 drivers" being a criteria but even more mentioning size of bass unit and that it didn't specify that it had to be 12" or more in all directions.... so an elliptical driver was a tax loophole so long as 12" in biggest dimension. Think also of all those EMI 13" x 9" drivers with two tweeters on a metal strip across the front of them...
    I even recall talk of some early ABR speakers being for tax purposes as the third driver didn't need a magnet or voice coil to qualify...

  5. #15
    Join Date: Apr 2012

    Location: Southall, West London

    Posts: 30,152
    I'm Geoff.

    Default

    Quote Originally Posted by Arkless Electronics View Post
    Think also of all those EMI 13" x 9" drivers with two tweeters on a metal strip across the front of them
    Sold by the thousands from Lasky's and W.H.Smith in Edgware Road. They were called the 'Set 450' with the nasty little plastic coned tweeters and the 'Set 350' with a single paper coned tweeter.

    Not a patch on the various versions of the excellent 14A/770 alloy framed 13" x 9" jobs, as used by Celef, B&W, Mordaunt Short, Proac and Monitor Audio, amongst many others (although some of the 12" x 9" steel framed units shared the same cone and larger magnet).
    Mr. Tact!

    "when common sense, logic and plausibility are ruled out. All that remain are lies and foolishness"


    Gear: MMs/ADCs/Low output MC's/One rare Japanese SUT/one scarce British phono stage/various tonearms/two hefty Japanese DD TT's/hefty Japanese BD TT/smaller Japanese BD TT and small British BD TT. One CD transport/3 CD players/2 jitter buster/2 DACs/Valve buffer. One MD deck. One tuner. Two TVC pre-amps/two valve pre-amps/solid state pre-amp/passive pre-amp. Current dumping power-amp or either of two Class A SS power-amp or Class A EL34 valve monos or big Japanese (part Class A) integrated. Big dual concentric speakers/Smaller dual concentric speakers/two way British compacts and full range speakers, amongst others. And too much more to list!

  6. #16
    Join Date: Oct 2011

    Location: Bacup

    Posts: 367
    I'm Andrew.

    Default


    My Mordaunt Short MS 815's. I only use them to add a bit of oomph to the telly and I'm not in to the whole AV thing. They sounded OK until I heard the big Goodmans.

  7. #17
    Join Date: Apr 2017

    Location: Cheshire UK

    Posts: 267
    I'm Martin.

    Default

    Well I grew up with a Dynatron radiogram and it subconsciously put me off elliptical looking drivers for ever.

    Usually saw them in low fi gear that was knocking about as a kid.

    They cant be that good if nobody uses them now


    They were in this Van Der Molen garbage that I had when I was about 10. Im maybe being unfair as I enjoyed it as a kid until the built in amp starts crackling at the controls and failed...You could rock that BSR tonearm backwards and forwards on its rickety mounting and there was one elliptical speaker per cabinet

    Picture below BSR version.... My pride and joy

    Last edited by Minstrel SE; 29-09-2017 at 15:50.

  8. #18
    Join Date: Nov 2011

    Location: wirral

    Posts: 141
    I'm frank.

    Default

    I seem to remember very well reviewed Monitor Audio MA3 used an elliptical driver.

  9. #19
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 18,321
    I'm Martin.

    Default

    Quote Originally Posted by Minstrel SE View Post
    Well I grew up with a Dynatron radiogram and it subconsciously put me off elliptical looking drivers for ever.

    Usually saw them in low fi gear that was knocking about as a kid.

    They cant be that good if nobody uses them now


    They were in this Van Der Molen garbage that I had when I was about 10. Im maybe being unfair as I enjoyed it as a kid until the built in amp starts crackling at the controls and failed...You could rock that BSR tonearm backwards and forwards on its rickety mounting and there was one elliptical speaker per cabinet
    I'm tripping out just looking at that wallpaper. And the Formica!

    Those were the days.
    Martin



    Current Lash Up:

    Sony X505ES CD Player * NVA P90SA passive pre / NVA A30 Power amp * JM Lab Electra 926 loudspeakers *



    "I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." - Hunter S Thompson

  10. #20
    Join Date: May 2008

    Location: A Strangely Isolated Place in Suffolk with far away trains passing by...

    Posts: 14,378
    I'm David.

    Default

    That weren't no BSR deck. It was a late Garrard with a version of the ghastly cheapo 'Unimech' chassis which was based on their micro-changer CC10. Van Der Molen made some pleasant stereo record players, but the more expensive Hacker models were very much better and even had half decent speakers to boot (I think they were M-S sourced, but it would need Andr'e to confirm probably).
    Tear down these walls; Cut the ties that held me
    Crying out at the top of my voice; Tell me now if you can hear me

+ Reply to Thread
Page 2 of 4 FirstFirst 1234 LastLast



 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •