XS Monitor upgrade

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xschop
xschop Posts: 4,707
edited November 2021 in For Sale (FS) Classifieds
I put this kit together for Monitor 5 and 7 upgrade. Matching Phase plugged MW6502's, pole-pieces reset 100% concentric and Blue-loctite on magnet/pole-pieces. Self-adhesive butyl mat applied to steel basket frames also...

Billet RDO 194/198 tweeter bezels with correct stainless mounting screws and new hurricane nuts.

Midwoofer backing rings with new stainless mounting screws as well.

$235 shipped US-48 only
Just PM

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Don't take experimental gene therapies from known eugenicists.
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  • BlueBirdMusic
    BlueBirdMusic Posts: 2,082
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    Nice!! Where have you been lately? I've missed seeing your creativity.
    "Sometimes you have to look to the past to understand where you are going in the future"


    Harry / Marietta GA
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  • VR3
    VR3 Posts: 28,052
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    Man those phase plugs are legit
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • boston1450
    boston1450 Posts: 7,474
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    Nice
    ..
    ..
    ..
    Randy/Maine
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  • xschop
    xschop Posts: 4,707
    edited November 2021
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    Hey Blue, not much modding lately as the plandemic had our CNC lathe down for months because a VFD took a dump. But I'm back on the grind....

    4989ra8fjweq.jpg


    I've plugged quite a few MWs now, even successfully repaired a burnt coil on one. That was fun.

    Not in picture, but I have a pair of 6x6x1/2" self-adhesive sound deadening open-cell foam that go with these.
    Post edited by xschop on
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,707
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    These are still for sale. I've figured out a way to safely pack them in a $20 Priority box.
    So $200 shipped US-48 only. The RD-0194/8 plates are the last ones for the foreseeable future...
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,707
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    These are NLA.
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,707
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    I parted the semi-rings and bezels out as a favour. So ONLY the pair MW6502's are left. I boxed them back up and will offer them for $100 shipped Priority US-48 only.

    Just PM

    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,707
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    This kit is back up for sale. I have a fresh set of MW backer rings and a new set of billet RDO tweeter plates I'm finishing up.

    $200 shipped US-48

    Thanks, Rob
    Don't take experimental gene therapies from known eugenicists.
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  • Gardenstater
    Gardenstater Posts: 4,189
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    What a freakin' awesome deal for someone with, correct me if I'm wrong, 5B or 7C and maybe Series II also?
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • xschop
    xschop Posts: 4,707
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    Basically, whatever F1 says can be RDO'd.
    Don't take experimental gene therapies from known eugenicists.
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  • dorokusai
    dorokusai Posts: 25,576
    edited February 2022
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    You can’t drop in into a RTA12 nor models using the SL1000

    It’s assuredly been done
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • xschop
    xschop Posts: 4,707
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    dorokusai wrote: »
    You can’t drop in into a RTA12 nor models using the SL1000

    It’s assuredly been done

    Not true if you add a set of CRS+/SDA-2B x-overs into the equation. Eventually someone will do this to a set of 12's and experiment with tweeter placement.
    Don't take experimental gene therapies from known eugenicists.
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  • dorokusai
    dorokusai Posts: 25,576
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    No shite
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • xschop
    xschop Posts: 4,707
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    dorokusai wrote: »
    No shite

    It'll be the shizite as the kids say.
    Don't take experimental gene therapies from known eugenicists.
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  • Gardenstater
    Gardenstater Posts: 4,189
    edited March 2022
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    As far as the MW6502 goes and one driver per speaker, in certain years: M4.5, M4, M5Jr+, M5, M7

    axq3v4sw5k93.jpg
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • xschop
    xschop Posts: 4,707
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    Can you RDO any M4's? Would be a slick looking bookie too.
    Don't take experimental gene therapies from known eugenicists.
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  • Gardenstater
    Gardenstater Posts: 4,189
    edited March 2022
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    Maybe earlier M4's (kind of doubt it) but I checked the brochure and the M4 Series II had an SL1500 tweeter. Definitely looks like a smaller tweeter plate and dome too maybe. The M4.6 Series II had an SL2500 tweeter. Taller and deeper cabinet.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • Hansvelton
    Hansvelton Posts: 151
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    Curious "About" these phase plugs, you DIYed into existing Polk Mid woofers. Is there any thread with an explanation and measurements showing what they "Do" as far as in actual usage?

    I know WHAT phase plugs are, just these specifically I mean....
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  • xschop
    xschop Posts: 4,707
    edited March 2022
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    https://forum.polkaudio.com/discussion/190301/phase-plug-design-for-mw65xx/p1

    They prevent the frequencies/signal at the center of the cone from cancelling and distorting.
    After the mod, I found stereo imaging better improved on my monitors. I experimented with SDA-8TLs over the fall a few times and they improve the SDA imaging or soundstage imaging if you will, by more accurately syncing the inverted SDA signals.

    I have a spare set of phase-plugged 6510's left over from that experiment also.

    https://forum.polkaudio.com/discussion/195269/xs-6510-pair#latest
    Post edited by xschop on
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,707
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    These are sold.
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,707
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    I have another one off these kits put together MINUS the 6502's

    $140 shipped US-48 ONLY

    If you send your MWs, I'll plug them and send everything back in some box for $150

    Paypal F&F or M.O. Just PM
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,707
    edited February 2023
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    Bump. Cleaning out garage. This may be the last set of plates for awhile.

    Billet RDO Plates and fasteners with MW rings and fasteners and 2 billet phase plugs ... $125 shipped.
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 4,707
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    These plates are sold.
    Don't take experimental gene therapies from known eugenicists.
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