The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Dynaco VTA tube amp kits, all Tubes4hifi.com products and all Dynakitparts.com products


    I wanna resurrect the phase discussion "VTA ST-120 phase?" thread Bob shut down

    Share
    avatar
    Peter W.

    Posts : 403
    Join date : 2016-08-07
    Location : Melrose Park, PA

    Re: I wanna resurrect the phase discussion "VTA ST-120 phase?" thread Bob shut down

    Post by Peter W. on Mon Jun 26, 2017 2:58 pm

    Mpffffff.... Hmmmmm.... speakers....

    This household keeps Magnepan, AR & Dynaco speakers.
    Daughter & Son-in-Law keep Revox & AR.
    Brother keeps Accustat (electrostatics).
    Son & Daughter-in-law keep no speakers other than in the television - young kids.

    At present, I have the only tube driven systems in the inventory - Dynaco ST70 - modified stock & Scott LK150 - also modified stock.

    Neither tube amp will drive the maggies well in a 17 x 28 x 10 (all feet) room. I use a brute-force Citation 16 solid-state amp for that purpose.

    My interest would be in the amp/speaker/room size dynamic and how that is worked out. And whether a listening area is designed around a 'sweet spot' or not. NO (audio) sweet spots permitted in this house... that is what headphones are for.
    avatar
    deepee99

    Posts : 1596
    Join date : 2012-05-23
    Location : Wallace, Idaho

    Re: I wanna resurrect the phase discussion "VTA ST-120 phase?" thread Bob shut down

    Post by deepee99 on Mon Jun 26, 2017 3:31 pm

    VTA's M-125s will drive Maggies, at least my old MGIIs. Still need a sub-woof, though, but that's a speaker weakness. Vandersteen makes a nice subwoofer x-over that takes the heavy lifting off the tubes and passes the low end to a powered sub-woofer.
    As to "sweet spot," that's for the birds -- unless you're single, never entertain company, and have your listening chair and speaks bolted to the floor. More raptor oil.
    avatar
    corndog71

    Posts : 546
    Join date : 2013-03-19
    Location : It can get windy here

    Re: I wanna resurrect the phase discussion "VTA ST-120 phase?" thread Bob shut down

    Post by corndog71 on Mon Jun 26, 2017 3:51 pm

    I've always set up my gear for the proverbial sweet spot.  Might as well just settle for bose if you like that diffuse sound. tongue  
    Or don't worry about phase, just plug in the speaker connectors randomly.
    avatar
    PeppaPig

    Posts : 24
    Join date : 2017-06-18
    Location : West Dakota

    Re: I wanna resurrect the phase discussion "VTA ST-120 phase?" thread Bob shut down

    Post by PeppaPig on Mon Jun 26, 2017 6:23 pm

    I think it is worth noting that our psychology plays I big part in what we hear. My more so than many of us realize if that were not the case then company's like audioquest would be out of business
    avatar
    Peter W.

    Posts : 403
    Join date : 2016-08-07
    Location : Melrose Park, PA

    Re: I wanna resurrect the phase discussion "VTA ST-120 phase?" thread Bob shut down

    Post by Peter W. on Mon Jun 26, 2017 6:48 pm

    deepee99 wrote:VTA's M-125s will drive Maggies, at least my old MGIIs. Still need a sub-woof, though, but that's a speaker weakness. Vandersteen makes a nice subwoofer x-over that takes the heavy lifting off the tubes and passes the low end to a powered sub-woofer.
    As to "sweet spot," that's for the birds -- unless you're single, never entertain company, and have your listening chair and speaks bolted to the floor. More raptor oil.

    How big was your listening room?

    The MGIIIa speaker extends quite far down. I have not felt the need for a SW, but for when I listen to the 3as.
    avatar
    j beede

    Posts : 394
    Join date : 2011-02-07
    Location : California

    Re: I wanna resurrect the phase discussion "VTA ST-120 phase?" thread Bob shut down

    Post by j beede on Mon Jun 26, 2017 8:33 pm

    It is not uncommon for the individual drivers within a single multi-driver speaker to be wired out of phase with respect to one another. This is often done in an attempt to compensate for phase distortion introduced by high order crossover networks.


    Sponsored content

    Re: I wanna resurrect the phase discussion "VTA ST-120 phase?" thread Bob shut down

    Post by Sponsored content


      Current date/time is Sun Jul 23, 2017 10:39 am