Monitor 10B

salasg
salasg Posts: 172
edited October 2009 in Vintage Speakers
Purchased a pair of 10B on Fleabay. Got both of them for 150 including S&H. Unpacked them and both appear to be in good condition cosmetically. Did the PR push test on both, one did just fine, while the other had absolutely no movement on the PR or MW. Hooked them up and got no bass or mid from that speaker. Is it the MW's or the crossover. I get plenty of highs form the tweeter, but otherwise nothing.
Are the serial #'s on these usually consecutive? Because these are not. And if it is the MW's what would it cost to replace? And is it worth it?
:mad::eek::( In other words Sh@#
Thanks
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    can swap between components to check.

    get a voltmeter to measure static resistances.

    may have open or frozen speaker coils and therefore no sound.

    check fuses on Xovers.

    anything looking burnt or fried could be the previous owner had a wild party and cranked the volume too much
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  • salasg
    salasg Posts: 172
    edited July 2009
    Overall the speakers look good. Checked fuses and look fine. Was gonna swap MW between cabinets and see if I have the same problem. If so can assume its the XO's. If frozen or open speaker is there a solution, besides buying new MW. If new ones are in need what is the $$ setback.
    Thanks
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    I suppose one can have a Polk speaker drivers refurbished.
    Probably would need to check with Polk Audio Customer Service if the driver and parts are still available.

    Monitor 10Bs are vintage so I suspect it will the used vintage market.

    Are your drivers MW6503 or MW6501 ?

    Also search the Club Polk For Sale forum or place a WTB wanted to buy.
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  • geppy1
    geppy1 Posts: 3,075
    edited July 2009
    Early Bs would have 6501s. I have some if you need them Keith
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    I have (one) a SW100 Passive Radiator if you need a replacement
    reasonable $$
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    here is geppy1's link to the for sale 6501

    hint to double check the part number for your speakers.

    http://www.polkaudio.com/forums/showthread.php?t=85481
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  • salasg
    salasg Posts: 172
    edited July 2009
    Okay,
    Swapped components between the two cabinets and it seems that it's the drivers. The speakers show them as being MW6600X. Are these replacement MW's? Both sets of drivers have the same model #. Monitor Series MW6600X.
    If any one has these I would be willing to pay a reasonable price. Are the 6501 or 6503 comparable? Could the damage have occured in shipping? They came from Connecticut to California?
    Thanks
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    doing a quick search on mw6600
    I found this statement
    quote.."The 6600 is the rarest of the MW's. You can get a new replacement from Polk. Mention you are a club Polk member to receive the discount."....

    appears your speakers was modified to use drivers from a monitor 12.

    suggest to pull all the drivers to make sure they are matching
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  • salasg
    salasg Posts: 172
    edited July 2009
    How do I check to see if they are matching. All the MW on the monitors are MW6600X. If thats what you meant. They still carrry the replacement MW through Polk? Do you know how much this will set me back? Can I find these elsewhere? Like through this forum for less?
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    that is what I meant.
    check the Club Polk Forum "For Sale"
    and call Polk Audio Customer Service.

    I'm curious to know also if they are available and how much so let us know.

    Also is the crossover original 10B's or have they also been modified.

    just a suggestion you might want to restore them to original factory POLK specifications otherwise you are working with a modified plan and you are on your own their.
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  • salasg
    salasg Posts: 172
    edited July 2009
    Looks like all original. How would I know if it has been modified?
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    talk to the original owner if possible to ask if the speaker were worked on and changed.

    monitor 10b used MW6503.
    and 84&85 used MW6501.

    the mw6606 were used in monitor 12s.

    search for the monitor 10b schematic and stare and compare.
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    try this

    http://www.polkaudio.com/forums/attachment.php?attachmentid=18775&d=1155784729
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    schematics for monitor 12 show mw6503 was used
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  • AudioGenics
    AudioGenics Posts: 2,567
    edited July 2009
    found this information also

    quote..."My RTA 11s (that's what the box and manuals stated - now missing) have the MW 6600X in the right speaker and MW 6501 in the left speaker (factory auth repair shop replaced them in 1991). Called Polk Friday to get replacements for the MW 6600X (dog won) and was told MW 6510 was the original driver, now replaced by MW 6503 (in stock). Should I buy 4 new MW 6503 and replace all?"......
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  • salasg
    salasg Posts: 172
    edited July 2009
    Hey,
    Able to find one MW6600X on Fleabay. Hope to get it in about a week. Still need help finding one more. If anyone out there has one for sale would pay fair market rate.
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  • heiney9
    heiney9 Posts: 25,216
    edited July 2009
    jvc wrote: »
    I suppose one can have a Polk speaker drivers refurbished.

    If the magnet has shifted (highly likely) then that would be a negative. There are some places that claim to be able to realign a magnet but I've not heard of a successful one. And by the time you pay to ship both ways and the cost for them to realign it's more $$ (quite a bit more) than just buying a used driver or anew one from Polk.

    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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  • heiney9
    heiney9 Posts: 25,216
    edited July 2009
    jvc wrote: »
    found this information also

    quote..."My RTA 11s (that's what the box and manuals stated - now missing) have the MW 6600X in the right speaker and MW 6501 in the left speaker (factory auth repair shop replaced them in 1991). Called Polk Friday to get replacements for the MW 6600X (dog won) and was told MW 6510 was the original driver, now replaced by MW 6503 (in stock). Should I buy 4 new MW 6503 and replace all?"......

    WTF?

    The 11T never used a 6600X neither did the 10's in any form. To the OP, the 6600X is not the correct replacement.

    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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  • zarrdoss
    zarrdoss Posts: 2,562
    edited July 2009
    how can the radiator be froze?
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  • leroyjr1
    leroyjr1 Posts: 8,785
    edited July 2009
    zarrdoss wrote: »
    how can the radiator be froze?


    By putting it in the freezer.:p
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  • zarrdoss
    zarrdoss Posts: 2,562
    edited July 2009
    leroyjr1 wrote: »
    By putting it in the freezer.:p

    good one!
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  • geppy1
    geppy1 Posts: 3,075
    edited July 2009
    H9 is right early 10s 6500, early 10Bs 6501 late 10Bs 6503. Then again My SDA 1s I had were supposed to have 6501s and all the drivers were 6600s Go figure. keith
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  • salasg
    salasg Posts: 172
    edited July 2009
    Checked the polksda.com website for specs on the Monitor 10B. It shows model MW6503 for this model. The website shows the Monitor 11, also described as RTA 11, using model MW6600. How they ended up in my Monitor 10B's? The one speaker with the working
    MW6600's sounds great. Now just need one more to complete the one speaker. Next is XO upgrade.
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  • heiney9
    heiney9 Posts: 25,216
    edited July 2009
    salasg wrote: »
    Checked the polksda.com website for specs on the Monitor 10B. It shows model MW6503 for this model. The website shows the Monitor 11, also described as RTA 11, using model MW6600. How they ended up in my Monitor 10B's? The one speaker with the working
    MW6600's sounds great. Now just need one more to complete the one speaker. Next is XO upgrade.

    I owned RTA11's for 20 years and I can assure you they didn't use MW6600. BTW, the Monitor 11 and RTA 11 are completely different speakers.

    MW6503 sounds correct for the 10B's (depending on the year)

    Good luck

    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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  • salasg
    salasg Posts: 172
    edited July 2009
    My Bad.
    You are correct the monitor 11 use MW6510. BTW the link for the RTA 11 specifies the driver in that model as MW6600. Check the polksda.com website. Under publications and user manuals. Model 11 manual. Is it possible that mine were replaced aftermarket?
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  • heiney9
    heiney9 Posts: 25,216
    edited July 2009
    salasg wrote: »
    My Bad.
    You are correct the monitor 11 use MW6510. BTW the link for the RTA 11 specifies the driver in that model as MW6600. Check the polksda.com website. Under publications and user manuals. Model 11 manual. Is it possible that mine were replaced aftermarket?

    As I stated earlier Model 11 (Monitor 11) is not anything like the RTA11. The Model 11 perhaps did use the MW6600.

    I know for sure the Monitor 10 and RTA11 didn;t use those as a stock driver. I used to have a parts list somewhere of all the part numbers for the different Polk models.

    Knock yourself out on the MW6600 if that's what you want to do. I'd buy (4) of them if you are going to use them. It would be cheaper and "correct" to replace with the MW6503.

    H9

    P.s. I see where the confusion is the Polk manual actually states RTA 11. They made an RTA 11T later on with the "T" at the end meaning "tower" the Model 11 in the user manual you reference is NOT the same as the RTA 11T. I know it's damn confusing isn't it. :)
    "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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  • salasg
    salasg Posts: 172
    edited July 2009
    I am trying to keep the components as I purchased the speakers. So far I have been able to locate one MW6600X speaker on ebay. Looking for one more. Anyone out there have or see one for sale, please let me know.:D
    Thanks
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  • salasg
    salasg Posts: 172
    edited July 2009
    Question about the Monitor 10B Tweeters. I have a pair of Monitor 10B's, I want to know if I should:
    a. Replace the stock SL 1000's
    b. If so should I go with a pair of Peerless tweeters that I can find, hopefully here hint, hint.:D
    c. Replace with a pair of RDO 194 from polk.
    d. Or none of the above and keep the stock SL1000's.
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  • joebon
    joebon Posts: 1
    edited October 2009
    I have four mw6600x circa late 1983 for sale, if anyone wants them. They are formerly from a Monitor 10B and in excellent condition.
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  • skrol
    skrol Posts: 3,393
    edited October 2009
    Following Polk Audio's redesigns is not easy. There seem to be many variations on model names and even redesigns within a model run. Following the forums here I have a feeling that there are some "FrankinPolks" in existance too. From my collection of info, I put the following list together for the mid-woofers. I can't guarantee that it is correct.

    Model 11 Real Time Array (RTA11) = MW6600
    Monitor 11 = MW6510
    RTA8T (aka Monitor 8T) =
    RTA8TL = MW6501, Later revised (1989) MW6510
    RTA11T = MW6510 (there may have been an earlier version)
    RTA11TL = MW6510

    Monitor 10A = MW6501 ?
    Monitor 10B = MW6503
    Monitor 10C = MW6503 ?
    Monitor 10 Series2 = MW6503

    I am not sure there the MW6600 falls into any of this but I don't doubt that they exist.
    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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