A Discussion on Speaker Dynamics

Discussion in 'Speakers' started by J-ROB, May 4, 2018.

  1. J-ROB

    J-ROB Senior Member

    Oh yeah? Who is going to tend my garden and finish the 5 or 6 DIY projects I currently have in process? Gotta go buy and plant 75 impatiens today...well, maybe tomorrow.

    WE did nothing on the back of their open baffles, except for the TA7331 which had linen louvers on the rear opening sorta like venetian blinds.

    Installation diagrams sometimes show a big piece of rockwool type stuff placed behind the speaker to catch the backwave to prevent reflections off the back wall.

    All WE theater and studio speakers are perfectly useable in the modern day context. The early snail horns might have a bit too much "character" for some listeners. The Mirrophonic stuff and the 40's sound system gear are all excellent. The best I have heard.

    Mirrophonic M2 and 757A are the two best speakers I know-- one huge, one a nice size but unfortunately super rare and crazy expensive.

    The 32/414 is a poor mans version of the 757A or 753C in my mind. The 757A is better than any 32/414 system I managed to put together, but I think I may have beaten the stock 753C on occasion.

    A couple people reported that the 757A was the best of show, and these were not WE freaks, just listeners.

    I have had that speaker sounding like the voice of god in a few setups. It is a very open, natural sounding monitor. Imagine a way more open sounding, more dynamic Quad ESL with insistent bass drive, and that starts pointing you in the right conceptual direction.

    The WE PM cone speakers (728B, 754B, 755A, 756B) are all ridiculously good and don't sound like anything else.

    And that is the problem. I can't transmit this quality via the written word.

    I set up the demo in Munich as a 1930s vs. 1940s technology comparison. The 1930s horn was a London WE tin snail horn from 1937-38 with a 555 driver. it was a highly resonant sucker and a bit too colored for me although very big sounding and intense. At least half of the visitors seemed to pick the old honker anyway. i framed it as a choice between precision and definition vs. soul and texture, and soul may have won. Definitely on big horn music such as this demo fave:

  2. marantzfan

    marantzfan Administrator Staff Member

    You know... you could always write a book.

    Kind of like that Swiss Precision book about the Thorens TD-124.

    I’d buy it.
    TubeHiFiNut likes this.
  3. TubeHiFiNut

    TubeHiFiNut Administrator Staff Member

    That would be a great book to read! :)

    I'd definitely buy one, too. :)
  4. mhardy6647

    mhardy6647 Señor Member

    speaking of [Swiss] precision...
    if'n any of all y'all* find yourselves in or near the Connecticut River "Upper Valley" this summer... besides stoppin' by our humble abode, y'all* might want to stop by the American Precision Museum in nearby Windsor, VT. Just across the river (via one of the longest covered bridges in the known world, I might add).




    * all y'all is standard Southern English second person plural, while y'all (you all) is standard Southern English second person singular.
    MikeT., Fran604g and MikeyFresh like this.
  5. MikeT.

    MikeT. Senior Member

    Example: @mhardy6647 , y’all better not be makin’ fun of us southern folk.
    Or all y’all northerners are always makin’ fun of use southern folk.
    See! Interchangeable.
    Last edited: May 21, 2018
  6. mhardy6647

    mhardy6647 Señor Member

    I do have Southern cred, I'd like to say on my behalf.
    I was born south of the Mason-Dixon Line (barely, but still...)
    And I used to have a bunch of relatives in North Carolina (though most have gone on to their rewards). Still a few, though.

  7. TubeHiFiNut

    TubeHiFiNut Administrator Staff Member

    Lots of relations in Stone County, Arkansas. :)

    Lived in Houston back in the 1950s.

    All y'all get off my lawn. ;) ;)
  8. MikeT.

    MikeT. Senior Member

    Man y’all, I’m loving this thread
    marantzfan likes this.
  9. mhardy6647

    mhardy6647 Señor Member

    @J-ROB may not be; sorry paisan!
  10. TubeHiFiNut

    TubeHiFiNut Administrator Staff Member

    We never go off topic around these parts. ;) :)
  11. J-ROB

    J-ROB Senior Member

    I'll have you know that I have lived in the Southeron region of the US since 1987, including 10+ years in the Commonwealth of Virginia, capital state of the Confederacy, and 15 years in the Republic of Texas.

    My son is a Native Texas, middle name of Austin.

    Furthermore, I was born in Philly blocks from where Mason and Dixon started their survey. Look it up, hoss.

    Since you won't look it up, the starting point of the border was measured out to be the western bank of the Delaware River, 15 miles south of South Street, then (1764) the Southernmost street in Philadelphia. I'm from south of there.

    Yeah I drink red pop and eat pork rinds, so what?
    Last edited: May 19, 2018
    MikeT. and TubeHiFiNut like this.
  12. mhardy6647

    mhardy6647 Señor Member

    ooh, I don't think of truculence as a Southern core competency. ;)

    I did know that (about the line), actually. Well some of it. I also "know that Philadelphia was supposed to be in Maryland, but M&D erred in their survey.
    Or so I was taught when I was in school (in Maryland). And I kid you not (as Jack Paar used to say).

    By red pop, I will assume you mean Cheerwine.

    I get in touch with my inner Southerner whenever I head down I-95 and then I-85 into NC.

    PS I've tried to read Pynchon's Mason & Dixon. I really have, but I couldn't make it through (and I am a Pynchon fanboy). My son made it through, though.
  13. John Frum

    John Frum Junior Member

    My house is littered with half-read Pynchon, Mason & Dixon included. I could say that I learned from him that my best results in life came by philosophically approaching most endeavors as jazz, and I've been trying to chew through him ever since.
  14. mhardy6647

    mhardy6647 Señor Member

    Have you read V (his first novel)?

    McClintic Sphere...

  15. je2a3

    je2a3 Junior Member

    @J-ROB - Re: Silbatone in Munich 2018, what's the tweeter above the stacked WE755A cabs? PM or field coil?

  16. J-ROB

    J-ROB Senior Member

    That is the mega rare 752A PM Loud Speaking Telephone. As far as i know, the only system they were used in is the mega rare 753A, the 3-way version of 753.

    Closeup pics here on Chuck's blog:

    Tweeter and stacked arrangement were employed in hopes of beefing up 755A presentation to work way out in the middle of in a large room with 50+ people in it at time. Well, in the end, they didn't shake the walls but they did a very good job on light music. WE 755A is not a Mahler 5 demo speaker even under the best circumstances.
  17. je2a3

    je2a3 Junior Member

    I did see it in Chuck's blog and had a gut feel it was that ultra rare tweeter. Thanks!

    So when will you update the Junkyard Jukebox with the 755A in Silbatone cabs + other juicy tidbits of audio history?:)
  18. J-ROB

    J-ROB Senior Member

    Hell no, I'm not writing anything!

    Just kicking back and waiting for the next installment of JE Labs.:beat
  19. mhardy6647

    mhardy6647 Señor Member

    Or Hi-Fi Heroin or maybe even Paper and Oil.


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