+ Reply to Thread
Page 11 of 16 FirstFirst ... 910111213 ... LastLast
Results 101 to 110 of 153

Thread: Chester Hifi Show 2018

  1. #101
    Join Date: Apr 2012

    Location: N E Kent

    Posts: 51,624
    I'm Geoff.

    Default

    Quote Originally Posted by Macca View Post
    narrow baffles image better than wide baffles
    That goes against logic really. Surely the wider a baffle, the less diffraction? I mean, take it to extremes, have a baffle ten feet wide. The edges are unlikely to cause problems.

    Somebody once said that the ultimate speaker would be a point source with a baffle of infinite size. (think there was a bit more to it though)

  2. #102
    Join Date: Jan 2008

    Location: gone

    Posts: 11,519
    I'm gone.

    Default

    The edges cause diffraction, so act as an independent source of sound.
    The wider they are apart the more diffuse and spread out the imaging will be.

    The somebody who wanted infinitely wide baffles wanted to get away from diffraction effects altogether.
    Unachievable, of course.
    Except without any baffles.
    .

  3. #103
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 37,786
    I'm Martin.

    Default

    Quote Originally Posted by walpurgis View Post
    That goes against logic really. Surely the wider a baffle, the less diffraction? I mean, take it to extremes, have a baffle ten feet wide. The edges are unlikely to cause problems.

    )
    Which is why the pros soffit-mount. But otherwise a wide baffle is sub-optimal for imaging, even if it may confer benefits elsewhere.
    Current Lash Up:

    TEAC VRDS 701T > Sony TAE1000ESD > Krell KSA50S > JM Labs Focal Electra 926.

  4. #104
    Join Date: Apr 2012

    Location: N E Kent

    Posts: 51,624
    I'm Geoff.

    Default

    Quote Originally Posted by jandl100 View Post
    The edges cause diffraction, so act as an independent source of sound
    Edges generate sound? Hmm, get rid of the drivers and rely on the edges.

  5. #105
    Join Date: Jan 2008

    Location: gone

    Posts: 11,519
    I'm gone.

    Default

    Yes.
    Look up diffraction, Geoff.
    .

  6. #106
    Join Date: Apr 2012

    Location: N E Kent

    Posts: 51,624
    I'm Geoff.

    Default

    Quote Originally Posted by jandl100 View Post
    Yes.
    Look up diffraction, Geoff.
    I'm well aware of edge diffraction. But I like posing challenging points of view.

  7. #107
    Join Date: Jan 2008

    Location: gone

    Posts: 11,519
    I'm gone.

    Default

    Here you go ...

    .

  8. #108
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,012
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    Quote Originally Posted by Macca View Post
    The reason I don't think that it is a WAF thing is threefold

    1) the WAF solution is not to have any speakers or hi-fi on display at all. It's no good saying 'But darling, these speakers have very narrow baffles.' She doesn't want speakers in her living room, end of.

    For the WAF theory to be true the entire narrow baffle design would have to be aimed at that tiny sub-section of people who have a wife who will object to wide speakers but not to narrow ones. Whilst there must be some I would suggest it is hardly a demographic at all.

    2) There is plenty of research, mostly available on line, that looks closely into the effect the cabinet design has on the sound waves propagating from it. It is generally concluded that, all else being equal, narrow baffles image better than wide baffles.

    3) You can buy speakers that are absolute monsters and cost a fortune but still use a narrow baffle design. These speakers are clearly way beyond any WAF - pandering yet still use a narrow baffle. Why would they do that?

    As for Tannoys, the baffle needs to be that wide to accommodate a 15 inch driver, the fixings and the thickness of the side walls. I would be interested to see if anyone can produce any evidence that the baffle was deliberately made wide in order to improve sound quality. I'll bet there is none because I reckon they never even considered it. But happy to be proven wrong.
    No worries and noted. However, two things:

    In terms of the "WAF solution", I'm referring to the types of customers decent hi-fi dealers around the country have (such as hi-fi dave), and also abroad, with female partners who are happy to have proper speakers in the lounge, but nothing too obtrusive, and so tall, slim floorstanders of some description, often fit the bill.

    And I'd imagine if you totalled up those customers, worldwide, wherever there are such hi-fi dealerships, it'd amount to a decent-sized demographic - and trust me, manufacturers know that, and so cater for the demand

    Secondly, I won't dispute the imaging thing, but as Geoff points out, it certainly doesn't hold back big Tannoy DCs in that respect, as they image beautifully. However, I'm more of a scale/slam kinda guy, than an imaging freak, and I'm still convinced that baffle width has a key part to play in that, as well as obviously driver size.

    You should listen to a pair of these Hecos, in comparison with a quality slim floorstander, of overall similar dimensions, but with an array of smaller drivers, and you might 'get' where I'm coming from with wide baffles and one big (or bigger than normal) driver at the front, instead of multiple arrays of smaller drivers:



    The slam and scale those are capable of is much superior to the latter, although I don't know about imaging! Personally, I'd love to hear these babies:




    Do you think that Heco have bucked the popular 'slim' floorstanding trend for no good reason? I think not.

    Nice big, fat and wide... You can't beat it!

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.


    Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!

    Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!


  9. #109
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 37,786
    I'm Martin.

    Default

    How do you distinguish between the big driver providing the slam and the wide baffle providing the slam? All speakers with big drivers have wide baffles out of necessity, you can't fit a fifteen on a narrow baffle.

    So we can never listen to a big driver on a narrow baffle to test if it still has as much slam. We could put a small driver on a wide baffle and see if it slams more than it does on a narrow one, I suppose. I guess somewhere that the research has been done, pretty much everything about speakers has been researched and tested to infinity. So I'm not saying that a wide baffle does not add to the slam, I simply don't know and I'm wary of jumping to conclusions about it without doing the required reading.
    Current Lash Up:

    TEAC VRDS 701T > Sony TAE1000ESD > Krell KSA50S > JM Labs Focal Electra 926.

  10. #110
    Join Date: Jan 2008

    Location: gone

    Posts: 11,519
    I'm gone.

    Default

    .

+ Reply to Thread
Page 11 of 16 FirstFirst ... 910111213 ... 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
  •