SDA and too much of a good thing

Earthy
Earthy Posts: 488
edited October 2010 in Vintage Speakers
Lets say you were fortunate enough to have two identical pairs of SDA SRS speakers. Would it be possible to put them all together, in pairs to improve or widen the sound stage? If so, would an AB AB give a wider sweet spot or AB BA deeper? Or would the resulting sound be similar to a bad horror flick soundtrack?;)
Polk Audio SDA SRS 2.3TL
Parasound Halo A21
Parasound Halo P3

Home theater
Polk LSiM 707, 706c, 703, 705
Polk Blackstone TL3 for height
SVS PB12-ISD Sub
Denon AVR-X6400h
Parasound Halo A51
LG OLED65B7A
Sony UBPX800
Logitech Harmony Elite
PC LSiM 703
Spare LSIM 702 and 706c

Home Theater #2
Polk Audio LS70, CS350LS, LSF/X, S4
Onkyo TX-NR808



Post edited by Earthy on
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Comments

  • george daniel
    george daniel Posts: 12,096
    edited October 2010
    I tried it once,with a pair of 1C's,, just for shi$s and giggles,,,a waste of time,just my hmnble opinion.
    JC approves....he told me so. (F-1 nut)
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  • inspiredsports
    inspiredsports Posts: 5,501
    edited October 2010
    george daniel wrote: »
    I tried it once,with a pair of 1C's,, just for shi$s and giggles,,,a waste of time,just my hmnble opinion.

    I would have to agree. I've run my SDA SRS 2's on the outside with SDA 2B's on the inside, positioned so the fronts of the cabinets are all precisely in the same plane and level, with the 2B's about 8' center to center and the 2's about 10' center to center.

    Either pair singley sound much better than the combined sound of both at the same time.
    VTL ST50 w/mods / RCA6L6GC / TlfnknECC801S
    Conrad Johnson PV-5 w/mods
    TT Conrad Johnson Sonographe SG3 Oak / Sumiko LMT / Grado Woodbody Platinum / Sumiko PIB2 / The Clamp
    Musical Fidelity A1 CDPro/ Bada DD-22 Tube CDP / Conrad Johnson SD-22 CDP
    Tuners w/mods Kenwood KT5020 / Fisher KM60
    MF x-DAC V8, HAInfo NG27
    Herbies Ti-9 / Vibrapods / MIT Shotgun AC1 IEC's / MIT Shotgun 2 IC's / MIT Shotgun 2 Speaker Cables
    PS Audio Cryo / PowerPort Premium Outlets / Exact Power EP15A Conditioner
    Walnut SDA 2B TL /Oak SDA SRS II TL (Sonicaps/Mills/Cardas/Custom SDA ICs / Dynamat Extreme / Larry's Rings/ FSB-2 Spikes
    NAD SS rigs w/mods
    GIK panels
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  • Earthy
    Earthy Posts: 488
    edited October 2010
    inspiredsports wrote: »
    Complex problems always have simple, easy-to-understand wrong answers.

    Not in my world. I have seen our engineers spend years and millions to come up with an extremely complex and difficult to support (understand) wrong answer all to often. :confused:
    Polk Audio SDA SRS 2.3TL
    Parasound Halo A21
    Parasound Halo P3

    Home theater
    Polk LSiM 707, 706c, 703, 705
    Polk Blackstone TL3 for height
    SVS PB12-ISD Sub
    Denon AVR-X6400h
    Parasound Halo A51
    LG OLED65B7A
    Sony UBPX800
    Logitech Harmony Elite
    PC LSiM 703
    Spare LSIM 702 and 706c

    Home Theater #2
    Polk Audio LS70, CS350LS, LSF/X, S4
    Onkyo TX-NR808



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  • civilian
    civilian Posts: 357
    edited October 2010
    Get some old school quad gear and you might be on to something.
    ________________
    2 Channel-Denon AVR-4520/SDA 2.3TL's
    5.1-Denon AVR-4500h/RT3000P's/CS1000P/RT2000P's/
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  • Face
    Face Posts: 14,340
    edited October 2010
    Room treatments.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • headrott
    headrott Posts: 5,496
    edited October 2010
    civilian wrote: »
    Get some old school quad gear and you might be on to something.

    Yes! And all of the Moody Blues SACD's!:D

    Greg

    Edit: Well, except "Lost Chord".
    Relayer-Big-O-Poster.jpg
    Taken from a recent Audioholics reply regarding "Club Polk" and Polk speakers:
    "I'm yet to hear a Polk speaker that merits more than a sentence and 60 seconds discussion." :\
    My response is: If you need 60 seconds to respond in one sentence, you probably should't be evaluating Polk speakers.....

    "Green leaves reveal the heart spoken Khatru"- Jon Anderson

    "Have A Little Faith! And Everything You'll Face, Will Jump From Out Right On Into Place! Yeah! Take A Little Time! And Everything You'll Find, Will Move From Gloom Right On Into Shine!"- Arthur Lee
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  • comfortablycurt
    comfortablycurt Posts: 6,745
    edited October 2010
    Bad idea. You'd be asking for a world of phasing and cancellation issues, smeared inaccurate sound staging and a plethora of other issues.
    The nirvana inducer-
    APC H10 Power Conditioner
    Marantz UD5005 universal player
    Parasound Halo P5 preamp
    Parasound HCA-1200II power amp
    PolkAudio LSi9's/PolkAudio SDA 2A's/PolkAudio Monitor 7A's
    Audioquest Speaker Cables and IC's
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  • xj4094dg
    xj4094dg Posts: 1,158
    edited October 2010
    civilian wrote: »
    Get some old school quad gear and you might be on to something.

    I tried this with my two pairs of SMGa's and a good sub in a large room with plenty of juice and had lot's of fun.

    Never know 'till you try!
    "The good thing about science is that it's true whether or not you believe in it." Neil deGrasse Tyson.
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  • inspiredsports
    inspiredsports Posts: 5,501
    edited October 2010
    xj4094dg wrote: »
    I tried this with my two pairs of SMGa's and a good sub in a large room with plenty of juice and had lot's of fun.

    Never know 'till you try!

    What are SMGa's? If they don't have SDA technology, you are comparing apples to filet mignon.
    VTL ST50 w/mods / RCA6L6GC / TlfnknECC801S
    Conrad Johnson PV-5 w/mods
    TT Conrad Johnson Sonographe SG3 Oak / Sumiko LMT / Grado Woodbody Platinum / Sumiko PIB2 / The Clamp
    Musical Fidelity A1 CDPro/ Bada DD-22 Tube CDP / Conrad Johnson SD-22 CDP
    Tuners w/mods Kenwood KT5020 / Fisher KM60
    MF x-DAC V8, HAInfo NG27
    Herbies Ti-9 / Vibrapods / MIT Shotgun AC1 IEC's / MIT Shotgun 2 IC's / MIT Shotgun 2 Speaker Cables
    PS Audio Cryo / PowerPort Premium Outlets / Exact Power EP15A Conditioner
    Walnut SDA 2B TL /Oak SDA SRS II TL (Sonicaps/Mills/Cardas/Custom SDA ICs / Dynamat Extreme / Larry's Rings/ FSB-2 Spikes
    NAD SS rigs w/mods
    GIK panels
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  • Joe08867
    Joe08867 Posts: 3,919
    edited October 2010
    SMG's are Magnepans from the 80's.

    smg.jpg

    I tried running two pair of SDA's next to each other and it sounded like crap. To many canceling issues. Think about it, two SDA channels crossing paths with two stereo channels.

    I did run them in a quad setup and they sounded awesome but that is a different path altogether.
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  • Earthy
    Earthy Posts: 488
    edited October 2010
    Oh my gosh, Quad.... That takes me back. I used to have an old Pioneer quad 8 Track in my car way back in the 70's. That would be a rush to have 4 monster SDA's front and rear with Pink Floyd Dark side of the moon, or like suggested good ole Moody Blues playing in genuine 4 channel surround.

    Not to worry though, If I do get another pair of SDA's, they will be in my home theater.
    Polk Audio SDA SRS 2.3TL
    Parasound Halo A21
    Parasound Halo P3

    Home theater
    Polk LSiM 707, 706c, 703, 705
    Polk Blackstone TL3 for height
    SVS PB12-ISD Sub
    Denon AVR-X6400h
    Parasound Halo A51
    LG OLED65B7A
    Sony UBPX800
    Logitech Harmony Elite
    PC LSiM 703
    Spare LSIM 702 and 706c

    Home Theater #2
    Polk Audio LS70, CS350LS, LSF/X, S4
    Onkyo TX-NR808



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  • TNRabbit
    TNRabbit Posts: 2,168
    edited October 2010
    comfortablycurt wrote: »
    Bad idea. You'd be asking for a world of phasing and cancellation issues, smeared inaccurate sound staging and a plethora of other issues.

    DItto.
    TNRabbit
    NO Polk Audio Equipment :eek:
    Sunfire TG-IV
    Ashly 1001 Active Crossover
    Rane PEQ-15 Parametric Equalizers x 2
    Sunfire Cinema Grand Signature Seven
    Carver AL-III Speakers
    Klipsch RT-12d Subwoofer
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  • xj4094dg
    xj4094dg Posts: 1,158
    edited October 2010
    inspiredsports wrote: »
    What are SMGa's? If they don't have SDA technology, you are comparing apples to filet mignon.

    If you have to ask.......

    (hint) It was a follow up to the quads mentioned earlier, and for the record, SMGa's are different from SMG's.

    Cheers!
    "The good thing about science is that it's true whether or not you believe in it." Neil deGrasse Tyson.
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  • erniejade
    erniejade Posts: 6,321
    edited October 2010
    I have run my 1.2 and 2.3 together. How you do it and make them sound good is do NOT connect the ic cable on one set. I put the 2.3 inside and the 1.2's on the outside and put the cable on the 1.2's No it was not accurate but talk about a HUGE wall of sound!!!! When I tried the IC on both sets it killed the sound.
    Klipsch The Nines, Audioquest Thunderbird Interconnect, Innuos Zen MK3 W4S recovery, Revolution Audio Labs USB & Ethernet, Border Patrol SE-I, Audioquest Niagara 5000 & Thunder, Cullen Crossover II PC's.
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