I got a great pair of old Monitor 5's

awe-d-o-file
awe-d-o-file Posts: 146
edited August 2008 in Vintage Speakers
They seem to be a 5A as there are no markings other than the serial number that starts with 5A. Although mint, with flawless grills, cabinets and original boxes and drivers in perfect condition they don't sound that good. Since the drivers are perfect I want to upgrade the crossovers since I know from experience this driver combination can sound much better. All I see here is 5B and later schematics. It's a basic crossover so it will be easy to identify (hopefully) once I open them up. I'm going to remove the polyswitch's if it has them and upgrade caps and resistor. Just wondered if anybody has a 5A schematic or knows the difference. Thanks in advance!


ET

System: MF Trivista SACD > Placette passive> CJ passive horizontal bi-amp> MF 2500A(LF) MF2100(HF) > 1.2TL's

Other: Speltz silver Eichmann IC's & speaker wire, Econotweaks Detail Magnifiers, PS Audio P-300(source), R. Gray 600, Al Sekala's AC R/C filters, R. Gray HT PC's, Oyaide R-1's,WPC-Z , M-1, Herbie's & DIY Isolation
Room: Qty 7 - 4' tall 18" diam. bass traps, Qty 4 - 4' X 2' X 4" panels. All DIY - man my wife is tolerant!
Post edited by awe-d-o-file on
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  • ben62670
    ben62670 Posts: 15,969
    edited August 2008
    Pics or it didn't happen!
    I want to see your tweeter.
    Just look at the XO. Polk was not real accurate with the schems of the older speakers. There are only 2 caps, 2 inductors, and 2 resistors in there.
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • zingo
    zingo Posts: 11,258
    edited August 2008
    Here is the thread from H9s great rebuild. It should be a great reference for you.

    http://www.polkaudio.com/forums/showthread.php?t=51420&highlight=5b*
    Jake
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  • awe-d-o-file
    awe-d-o-file Posts: 146
    edited August 2008
    ben62670 wrote: »
    Pics or it didn't happen!
    I want to see your tweeter.
    Just look at the XO. Polk was not real accurate with the schems of the older speakers. There are only 2 caps, 2 inductors, and 2 resistors in there.
    Ben

    Here's a pic as requested! Looks like a Peerless to me.


    ET

    System: MF Trivista SACD > Placette passive> CJ passive horizontal bi-amp> MF 2500A(LF) MF2100(HF) > 1.2TL's

    Other: Speltz silver Eichmann IC's & speaker wire, Econotweaks Detail Magnifiers, PS Audio P-300(source), R. Gray 600, Al Sekala's AC R/C filters, R. Gray HT PC's, Oyaide R-1's,WPC-Z , M-1, Herbie's & DIY Isolation
    Room: Qty 7 - 4' tall 18" diam. bass traps, Qty 4 - 4' X 2' X 4" panels. All DIY - man my wife is tolerant!
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  • george daniel
    george daniel Posts: 12,096
    edited August 2008
    I thought they had fuses instead of polys.:confused:
    JC approves....he told me so. (F-1 nut)
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  • awe-d-o-file
    awe-d-o-file Posts: 146
    edited August 2008
    george daniel wrote: »
    I thought they had fuses instead of polys.:confused:

    on the outside next to the connectors. And probably one resistor, two caps and one inductor in the crossover.


    ET

    System: MF Trivista SACD > Placette passive> CJ passive horizontal bi-amp> MF 2500A(LF) MF2100(HF) > 1.2TL's

    Other: Speltz silver Eichmann IC's & speaker wire, Econotweaks Detail Magnifiers, PS Audio P-300(source), R. Gray 600, Al Sekala's AC R/C filters, R. Gray HT PC's, Oyaide R-1's,WPC-Z , M-1, Herbie's & DIY Isolation
    Room: Qty 7 - 4' tall 18" diam. bass traps, Qty 4 - 4' X 2' X 4" panels. All DIY - man my wife is tolerant!
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  • george daniel
    george daniel Posts: 12,096
    edited August 2008
    thats what I thought,, then you won't have to worry about replacing/bypassing the polys,,as they don't have any. I picked up a pair from billw---replaced the resistor,caps and binding posts(not that I had to though,as they were in fine condition)and hooked them up to some little ASL mono's,,,unbelievable,,"mini sda's"---good luck with your new aquisition,,they are quite surprising,,,especially if you power them with tubes,,just my .02,,,enjoy. :)
    JC approves....he told me so. (F-1 nut)
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