whats the difference between monitor 10a and 10b?

djperez81
djperez81 Posts: 388
edited November 2010 in Vintage Speakers
i was wondering whats the difference between the monitor 10a and the 10b's?
I was looking at a pair of 10a's on CL.
http://tampa.craigslist.org/pnl/ele/2035320162.html

why are one of the tweeters different color than the other? and what do you guys think about the price? Thanks
Music doesn't lie. If there is something to be changed in this world, then it can only happen through music.
-Jimi Hendrix
Post edited by djperez81 on
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  • jimbo1421
    jimbo1421 Posts: 772
    edited November 2010
    deleted
    5.1 System:
    TCL R613 55" 4K
    Front: SRS-3.1TL
    Center: CS400i
    Surround: Monitor 10B
    PSW10 subwoofer
    Onkyo PR-SC886P Pre/Pro
    NAD T955 5 channel power amplifier
    Technics SL-1710 MK2 turntable
    Audio-Technica AT14Sa cartridge
    Parasound P3 pre-amp
    Oppo BDP-103 Blu-Ray
    2014 MacBook Pro 2.8 GHz

    2.0 Office System:
    Monitor 10A (Peerless)
    Outlaw 1050 receiver
    Parasound HCA-1000A power amp
    MacPro
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  • jimbo1421
    jimbo1421 Posts: 772
    edited November 2010
    Monitor 10A usually has a Peerless tweeter. I can't tell from the pictures whether the dark tweeter is a Peerless. Monitor 10B has a SL-1000 (bright brushed steel face like the left speaker) or SL-2000 tweeter. So if these Monitors are truly 10As then the SL-1000 is probably the wrong replacement. It will take more investigation to sort this out. I paid $75 for a nice pair of Monitor 10As with Peerless tweeters, so $130 for a mismatched set is too much.

    Jim
    5.1 System:
    TCL R613 55" 4K
    Front: SRS-3.1TL
    Center: CS400i
    Surround: Monitor 10B
    PSW10 subwoofer
    Onkyo PR-SC886P Pre/Pro
    NAD T955 5 channel power amplifier
    Technics SL-1710 MK2 turntable
    Audio-Technica AT14Sa cartridge
    Parasound P3 pre-amp
    Oppo BDP-103 Blu-Ray
    2014 MacBook Pro 2.8 GHz

    2.0 Office System:
    Monitor 10A (Peerless)
    Outlaw 1050 receiver
    Parasound HCA-1000A power amp
    MacPro
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  • kcoc321
    kcoc321 Posts: 1,788
    edited November 2010
    well I actually think they are 10b, at least looking at the drivers and cabinets. they have the beveled faces and they do not have the masonite rings around the drivers. My best guess is the SL1000 is actually the 'replacement' tweeter. It is hard to tell if the black tweeter is.
    that being said, price is a bit high, given you will have to replace the tweeter (whichever is the right one) I would probably offer around $75.
    good luck
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  • geppy1
    geppy1 Posts: 3,075
    edited November 2010
    Are you sure they are beveled?? I thought when they did that they went to full length grills. Those are either late 1983 10As or early 1984 10Bs polk switched cabinets in 1983 to the short grill. if you knew aserial number it may help

    10As 6500s with us made Peerless marked 5514____
    Early 10Bs 6600X or 6501s with SL 1000s
    Crossovers are the same.
    keith
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  • djperez81
    djperez81 Posts: 388
    edited November 2010
    ok thanks for the info guys
    Music doesn't lie. If there is something to be changed in this world, then it can only happen through music.
    -Jimi Hendrix
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  • kcoc321
    kcoc321 Posts: 1,788
    edited November 2010
    Your probally right Keith...alittle hard to tell on those tiny pics, but once I blew one up they are square cabinets...still would need to replace one of the tweeters.
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  • heiney9
    heiney9 Posts: 25,165
    edited November 2010
    Some later 10A's had sl1000's instead of peerless. These are mismatched and I wouldn't give him more than $75 for the pair.

    Lineage

    Monitor or Model 10
    Monitor 10A
    Monitor 10B
    Monitor 10C
    Monitor 10 series II
    "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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  • dorokusai
    dorokusai Posts: 25,577
    edited November 2010
    Good job Brock, you can count and know your alphabet :)

    As stated, you can find a pair of 10A with Peerless or SL1000.
    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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  • NeilGabriel
    NeilGabriel Posts: 1,487
    edited November 2010
    I've sold off all of my older 10B's, but I did not know that A's put the polk logo below the grill...though I did see a reference the other day to a short grill 10A. Also my older 10B's had a cutout area between the mids....
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