what are these?

Mr. Bubbles
Mr. Bubbles Posts: 736
edited September 2011 in Vintage Speakers
has anyone seen these newly listed SDA's on e-bay. I've never seen anything like them anywhere. What are they?

http://www.ebay.com/itm/Polk-SDA-Rare-Early-Prototype-/320752912255?pt=Speakers_Subwoofers&hash=item4aae5d077f
If con is the opposite of pro, is Congress the opposite of Progress?!


Monitor 5Jr, Monitor 5, RTA12, RTA 15TL, SDA 2A, 1c, SRS 2, 1.2TL, CRS, Atrium.
Post edited by Mr. Bubbles on
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  • fbm211
    fbm211 Posts: 1,488
    edited September 2011
    wow.Never saw those before.
    SDA-2BTL with custom IC
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    Revelation Audio Labs Prophecy Cryo-Silver Reference AES/EBU
    Revelation Audio Labs Prophecy Cryo-Silver i2s digital cable
    4 Furutech FP-314Ag with FI-11cu Plugs/FI-11AG IECs--- Power Cords
    DH LABS REVELATIONS ICs-amps
    Revelation Audio Labs Paradise cryo-silver ICs-Source to pre
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  • Gavin.Wright
    Gavin.Wright Posts: 125
    edited September 2011
    http://www.polkaudio.com/forums/showthread.php?t=120319

    Discussion of this topic over here...
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  • heiney9
    heiney9 Posts: 25,165
    edited September 2011
    Early SDA 2's still with the small port hole. The SDA 2 "Signature Edition" had a plaque covering the port hole, later SDA 2's had no port hole as it was done away with as being uneccesary after some factory tweaks.

    Nice piece of SDA history but the guy has them priced way too high, IMO.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • Mr. Bubbles
    Mr. Bubbles Posts: 736
    edited September 2011
    sorry i didn't see the other post about the same speakers until now. Didn't mean to duplicate a post.
    If con is the opposite of pro, is Congress the opposite of Progress?!


    Monitor 5Jr, Monitor 5, RTA12, RTA 15TL, SDA 2A, 1c, SRS 2, 1.2TL, CRS, Atrium.
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