Polk Monitor 7 Speakers

Mklade
Mklade Posts: 6
edited July 2011 in Vintage Speakers
I have a Pair of Monitor 7 Speakers (7 C I think) one of them has no sound from the mw 6502 driver, I suspect the magnet, coil is frozen.
Can I purchase a new driver from Polk or should I SEEK A USED driver?
The driver measures 3.7 ohms.
Post edited by Mklade on
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  • rromeo923
    rromeo923 Posts: 1,513
    edited July 2011
    Call Polk and find out.
    I got static in my head
    The reflected sound of everything
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  • Mklade
    Mklade Posts: 6
    edited July 2011
    I have checked Ebay posts and am not comfortable with the prices and packaging for shipment.
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  • newbie308
    newbie308 Posts: 767
    edited July 2011
    +1 CALL POLK!!!!
    Buy a new replacement. It will be factory packed and shipped! Fair prices, too!
    Sources: Technics SL1200MKII | SME3009 Tonearm | Monster Alpha 1 MC cartridge | Oppo UDP203 disk player | Nikko NT-790 analog tuner | Musical Fidelity Trivista 21 DAC | Preamp: Threshold SL-10 | Amplifier: Threshold Stasis 2 | Speakers: Snell Acoustics C/V | Kimber 12-TC bi wire speakers | Analysis plus Oval 1 preamp to amp | Wireworld Eclipse 7 DAC to Preamp | Wireworld eclipse digital IC Oppo to DAC | Audioquest Quartz tuner to preamp |
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  • rromeo923
    rromeo923 Posts: 1,513
    edited July 2011
    Mention you are on Club Polk for a discount
    I got static in my head
    The reflected sound of everything
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  • gdb
    gdb Posts: 6,012
    edited July 2011
    $48.00 shipped for CP members, cheap enuff?
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  • Mklade
    Mklade Posts: 6
    edited July 2011
    $48.00 from CP sounds good, better than a $70.00 plus shipping from ebay, and taking a risk on something DOA, thanks!
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  • dorokusai
    dorokusai Posts: 25,577
    edited July 2011
    Yeah the eBay prices have gone thru the roof. Eventually they'll come down when sales drop. We need to get the word out elsewhere that they are available from Polk, and the $48 price as well.

    If any of you guys can do that where you go it would be great.
    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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  • gdb
    gdb Posts: 6,012
    edited July 2011
    Now you must send me the frozen one for $5.00 + packing & shipping! Just kidding, but I would like to have it.:smile:
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  • skrol
    skrol Posts: 3,381
    edited July 2011
    I am in need of one also and recently checked; Polk has plenty of 6502 in stock. I have been eyeing the ones on EB but haven't jumped on them for the reasons mentioned above. Their price is too close to new.

    With nothing to loose, I might play with aligning my frozen woofer. If it doesn't work buy one from Polk.
    Stan
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • DON73
    DON73 Posts: 516
    edited July 2011
    Mklade wrote: »
    $48.00 from CP sounds good, better than a $70.00 plus shipping from ebay, and taking a risk on something DOA, thanks![/QUOTE





    $48 sounds more like a "score". Some shipping charges on e-bay can make the seller more than what he/she makes on what they sell.
    TO ERR IS HUMAN. TO FORGIVE IS CANINE.
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  • skrol
    skrol Posts: 3,381
    edited July 2011
    And the $48 from Polk is free shipping.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • pitdogg2
    pitdogg2 Posts: 25,460
    edited July 2011
    dorokusai wrote: »
    Yeah the eBay prices have gone thru the roof. Eventually they'll come down when sales drop. We need to get the word out elsewhere that they are available from Polk, and the $48 price as well.

    If any of you guys can do that where you go it would be great.

    yep i agree, but there are bargains to be had and you must have patients. I just bought 2 mw6510's for 28.00+shipping came to 40.00 for the pair looked brand new. I put them in my SDA2a jammed them real good GREAT DEAL. I took them out put the originals back in so know i have 3 spares. I've seen these sell for upwards of 65.00 each + shipping.. crazy bidding
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  • Mklade
    Mklade Posts: 6
    edited July 2011
    Just contacted Polk, they have MW6502 drivers in stock, $60.00 price but Club Polk Discount is 20%. With Club Polk Discount and Tax for Texas total is $51.84 with free shipping. Good deal even with the Tax.
    I have not had any success re-seating the magnet and driver; better to replace with new drivers.
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  • dorokusai
    dorokusai Posts: 25,577
    edited July 2011
    You cannot fix those drivers. When they are done, they're 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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  • gdb
    gdb Posts: 6,012
    edited July 2011
    skrol wrote: »
    I am in need of one also and recently checked; Polk has plenty of 6502 in stock. I have been eyeing the ones on EB but haven't jumped on them for the reasons mentioned above. Their price is too close to new.

    With nothing to loose, I might play with aligning my frozen woofer. If it doesn't work buy one from Polk.
    Stan

    It's not hard to do if you make a jig up like the one pictured in the thread at AK, I have sucessfully salvaged about 10 MWs so far.

    http://www.audiokarma.org/forums/showthread.php?t=202963
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  • dorokusai
    dorokusai Posts: 25,577
    edited July 2011
    GBD - If I cover shipping I'd like to see one of your repaired ones and get it on the Klippel machine at HQ. I'm interested to see how out of tolerance it is, if at all.
    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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  • skrol
    skrol Posts: 3,381
    edited July 2011
    GBD
    You are in MD correct? If you would like to make it 11, I got one you can take a crack at.
    Stan
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • pitdogg2
    pitdogg2 Posts: 25,460
    edited July 2011
    dorokusai wrote: »
    GBD - If I cover shipping I'd like to see one of your repaired ones and get it on the Klippel machine at HQ. I'm interested to see how out of tolerance it is, if at all.

    that is very cool Mark as I think it would be very informative to us all. If this goes through please post for all to see. I'm thinking that the magnets are magnetized after gluing and may be some phasing issues if not spot on the regluing
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  • TNHNDYMAN
    TNHNDYMAN Posts: 2,145
    edited July 2011
    All my Monitor 7's and 10's use the 6500 driver, so I'm curious as to how close the specs are with the 6502. I've seen a spec sheet in a thread, but can not find it with search feature. Would there be a significant sonic difference or ohm load difference in the two? On the 10's I would replace a pair at a time at least and not have one odd driver in the mix.
    2-ch System: Parasound P/LD 2000 pre, Parasound HCA-1000 amp, Parasound T/DQ Tuner, Phase Technology PC-100 Tower speakers, Technics SL-1600 Turntable, Denon 2910 SACD/CD player, Peachtree DAC iT and X1asynchorus USB converter, HSU VTF-3 subwoofer.

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  • skrol
    skrol Posts: 3,381
    edited July 2011
    Here ya go...

    Driver: MW 6500 Driver's model #.
    Brand: Polk Driver's brand name.
    Fs: 31.0000 Hz (Free air resonance)
    Vas: 2.6486 ft^3 (Compliance volume)
    Qts: 0.2190 Total Q
    Qms: 1.3000 Mechanical Q
    Qes: 0.2640 Electrical Q
    Sd: 0.0130 M^2 (Piston area)
    Xmax: 3.1800 mm (Cone excursion, linear)
    Revc: 6.5000 ohms (DC resistance)
    Znom: 8.0000 ohms (Nominal impedance)
    Pmax: 35.0000 watts maximum rated power


    Driver: MW 6501 Driver's model #.
    Brand: Polk Driver's brand name.
    Fs: 31.0000 Hz (Free air resonance)
    Vas: 2.7545 ft^3 (Compliance volume)
    Qts: 0.2790 Total Q
    Qms: 1.4700 Mechanical Q
    Qes: 0.3440 Electrical Q
    Sd: 0.0130 M^2 (Piston area)
    Xmax: 3.1800 mm (Cone excursion, linear)
    Revc: 7.7500 ohms (DC resistance)
    Znom: 8.0000 ohms (Nominal impedance)
    Pmax: 35.0000 watts maximum rated power


    Driver: MW 6502 Driver's model #.
    Brand: Polk Driver's brand name.
    Fs: 44.0000 Hz (Free air resonance)
    Vas: 1.2360 ft^3 (Compliance volume)
    Qts: 0.2790 Total Q
    Qms: 1.9700 Mechanical Q
    Qes: 0.3250 Electrical Q
    Sd: 0.0130 M^2 (Piston area)
    Xmax: 3.1800 mm (Cone excursion, linear)
    Revc: 3.5200 ohms (DC resistance)
    Znom: 4.0000 ohms (Nominal impedance)
    Pmax: 35.0000 watts maximum rated power


    Driver: MW 6503 Driver's model #.
    Brand: Polk Driver's brand name.
    Fs: 29.8600 Hz (Free air resonance)
    Vas: 3.0017 ft^3 (Compliance volume)
    Qts: 0.3100 Total Q
    Qms: 1.7680 Mechanical Q
    Qes: 0.3760 Electrical Q
    Sd: 0.0130 M^2 (Piston area)
    Xmax: 3.1800 mm (Cone excursion, linear)
    Revc: 6.5400 ohms (DC resistance)
    Znom: 8.0000 ohms (Nominal impedance)
    Pmax: 35.0000 watts maximum rated power

    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
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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  • TNHNDYMAN
    TNHNDYMAN Posts: 2,145
    edited July 2011
    Thanks Skrol-
    Looks like the 6500 is 8ohm and the 6502 is 4 ohm so I don't think that would work in my application.
    2-ch System: Parasound P/LD 2000 pre, Parasound HCA-1000 amp, Parasound T/DQ Tuner, Phase Technology PC-100 Tower speakers, Technics SL-1600 Turntable, Denon 2910 SACD/CD player, Peachtree DAC iT and X1asynchorus USB converter, HSU VTF-3 subwoofer.

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  • skrol
    skrol Posts: 3,381
    edited July 2011
    Polk sells the 6503 as a replacement for the 6500.
    Stan

    Main 2ch:
    Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.

    HT:
    Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60

    Other stuff:
    Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601
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