MW6517 specs?

xschop
xschop Posts: 5,000
in Vintage Speakers
Can't find these specs anywhere here.
Don't take experimental gene therapies from known eugenicists.
· Share on FacebookShare on Twitter

Comments

  • ChrisD06
    ChrisD06 Posts: 929
    Driver: MW 6517
    BrandL Polk Audio
    * Size / Type = 6.50" treater paper cone woofer
    * SPL = 91 db @ 1w/1m
    * Wattage = 125 Watts RMS / 250 Watts Peak
    * Treated cone woofer, rubber surround
    * Response = 40 Hz. to 10 kHz.
    * Weight = Right a 4 pound ea.
    * Magnet = UnShielded
    * VC = 1" ( 25 mm)
    * Ohms = 4 ohms
    * f(s) - 55 Hz.
    * Q(ms) - 7.261
    * V(as) - 14.60 liters ( 0.516 cf. )
    * n(0) - 5.02%
    * M(ms) - 18.38 grams
    * R(e) - 1.86 Ohms
    * Q(es) - 0.048
    * SPL - 92 dB @ 1W/1m
    * C(ms) - 0.44 mm/N
    * Z(max) - 281.50 Ohms
    * Q(ts) - 0.048
    * L(e) - 31.08 mH
    1 Driver Type Q BL Compliance DC Resistance Fs

    I went to google.com and typed in "polk mw6517 t/s parameters"
    · Share on FacebookShare on Twitter
  • Gardenstater
    Gardenstater Posts: 4,458
    Beat me to it young whipper snapper lol.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    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
    · Share on FacebookShare on Twitter
  • xschop
    xschop Posts: 5,000
    :D

    I'm going to rebuild the RM1000W subwoofer that I have and not sure I can substitute the original 6517's for 6502's (I have a stash) or just throw in some of these el-cheap-o's?

    https://www.newark.com/mcm-audio-select/55-3230/50w-rms-4-ohm-rubber-surround/dp/43W7871
    Don't take experimental gene therapies from known eugenicists.
    · Share on FacebookShare on Twitter
  • audioluvr
    audioluvr Posts: 5,578
    Gardenstater wrote: »
    Beat me to it young whipper snapper lol.

    You're too old to type that fast. :D
    Gustard X26 Pro DAC
    Belles 21A Pre modded with Mundorf Supreme caps
    B&K M200 Sonata monoblocks refreshed and upgraded
    Polk SDA 1C's modded / 1000Va Dreadnaught
    Wireworld Silver Eclipse IC's and speaker cables
    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)

    There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus
    · Share on FacebookShare on Twitter
  • ChrisD06
    ChrisD06 Posts: 929
    xschop wrote: »
    :D

    I'm going to rebuild the RM1000W subwoofer that I have and not sure I can substitute the original 6517's for 6502's (I have a stash) or just throw in some of these el-cheap-o's?

    https://www.newark.com/mcm-audio-select/55-3230/50w-rms-4-ohm-rubber-surround/dp/43W7871

    What's wrong with the 6517s? You've rebuilt some drivers that were pretty **** so I can't see why the 6517s wouldn't get the same treatment
    · Share on FacebookShare on Twitter
  • xschop
    xschop Posts: 5,000
    ChrisD06 wrote: »
    xschop wrote: »
    :D

    I'm going to rebuild the RM1000W subwoofer that I have and not sure I can substitute the original 6517's for 6502's (I have a stash) or just throw in some of these el-cheap-o's?

    https://www.newark.com/mcm-audio-select/55-3230/50w-rms-4-ohm-rubber-surround/dp/43W7871

    What's wrong with the 6517s? You've rebuilt some drivers that were pretty **** so I can't see why the 6517s wouldn't get the same treatment

    They had the most pristine 6502's installed, after dagoogledge, I found that they came with 6517's originally. But the 6502's were in there really didn't look like they were touched from factory, so who knows.
    Don't take experimental gene therapies from known eugenicists.
    · Share on FacebookShare on Twitter
  • ChrisD06
    ChrisD06 Posts: 929
    xschop wrote: »
    ChrisD06 wrote: »
    xschop wrote: »
    :D

    I'm going to rebuild the RM1000W subwoofer that I have and not sure I can substitute the original 6517's for 6502's (I have a stash) or just throw in some of these el-cheap-o's?

    https://www.newark.com/mcm-audio-select/55-3230/50w-rms-4-ohm-rubber-surround/dp/43W7871

    What's wrong with the 6517s? You've rebuilt some drivers that were pretty **** so I can't see why the 6517s wouldn't get the same treatment

    They had the most pristine 6502's installed, after dagoogledge, I found that they came with 6517's originally. But the 6502's were in there really didn't look like they were touched from factory, so who knows.

    Oh, yeah that's fair. The MW6502 and MW6517 would be entirely incompatible for the RM1000W unless it's genuinely a different design from Polk using the MW6502 with a different cabinet design and radiator. The Fs and Vas are way out of the margin of error.
    · Share on FacebookShare on Twitter
  • ChrisD06
    ChrisD06 Posts: 929
    https://www.ebay.com/itm/126039244924?hash=item1d5886407c:g:zpcAAOSw84Rky-kd

    Here's a pair on Ebay
    · Share on FacebookShare on Twitter
  • xschop
    xschop Posts: 5,000
    edited September 2023
    I got the subwoofer back up and running with 6502's. Maybe Polk did intend for the 6502's to run with this SW103 passive. Controlled impactful bass and not boominess I was concerned it would have.
    The ID stickers says RM3000 on the enclosure itself, which is different from what Ive seen pics of...

    mjic55z1jdj8.jpg

    cpng2exr3clv.jpg


    l4fz2wk8xtgq.jpg

    ma9oqmq1eb4i.jpg

    r3ycyw34y7yd.jpg

    p5ooi9zevbbq.jpg














    Don't take experimental gene therapies from known eugenicists.
    · Share on FacebookShare on Twitter
  • Gardenstater
    Gardenstater Posts: 4,458
    edited September 2023
    RM3000 was the model# for the entire Satellite/Subwoofer system. I think they also had model numbers of RM1000 and RM2000 for the Subwoofer and the Stereo Speakers respectively.

    Polk RM-3000 Reference Monitor System, Stereo Review, Feb 1990, p. 58:

    https://www.americanradiohistory.com/Archive-All-Audio/Archive-HiFI-Stereo/90s/Stereo-Review-1990-02.pdf

    You probably already have the manual but here it is.


    Post edited by Gardenstater on
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    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
    · Share on FacebookShare on Twitter
  • ChrisD06
    ChrisD06 Posts: 929
    I can't find any info online suggesting it has MW6502 from factory in earlier versions. The schematics also don't show MW6502.

    Did the drivers have RM1000 or RM3000 on them? If not, I'd be inclined to think they were replaced.
    · Share on FacebookShare on Twitter
  • xschop
    xschop Posts: 5,000
    edited September 2023
    The pics I saw on the net show "RM1000W" on the sticker to the right off the xover.
    Can't find a pic of my ID sticker...

    At any rate, had the sub hooked up too the B&O C30's and CX100's this weekend. Now at shop running with the modded TSi's... Really impressed...

    r8mo63477gif.jpg
    Don't take experimental gene therapies from known eugenicists.
    · Share on FacebookShare on Twitter
  • Gardenstater
    Gardenstater Posts: 4,458
    edited September 2023
    It would be interesting to see if adding the foam inside the basket to the subwoofer woofers would have no effect or very little effect since the frequencies are 100Hz and below here. Any effect would have to be due to mechanical vibration suppression since the low frequency absorption of foam of that thickness is virtually nill. Probably not worth even trying it, except for mythbuster purposes, regarding a certain claim of bass destruction 🤣
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    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
    · Share on FacebookShare on Twitter
  • xschop
    xschop Posts: 5,000
    I'll be tearing it apart again to upgrade the wiring and see what I can do to brace the baffle between drivers and PR. The MW's compartment is braced internally from factory.

    The cabinet is built like a tank and has an extra laminated layer of MDF in top. Heavier than a PSW-10 I've had
    Don't take experimental gene therapies from known eugenicists.
    · Share on FacebookShare on Twitter