Ring Installation Questions CRS+

stogie
stogie Posts: 230
edited February 2014 in Vintage Speakers
1. Should the rings be glued in or just dry fitted?
2. Recommended way of get the PR ring inside the cabinet- bending or cutting?
3. Any other tips or suggestions
thanks for any help
Speakers: Polk SDA-SRS xovers rebuilt by David, RDO194's, Dynamat, BH5, glued magnets, new cloth, custom aluminum terminal plates with Cardas posts and Speakon interconnect
Speaker Cables, Jumpers & Interconnect: DIY Douglas Connection
Power Amp: Sunfire Architect's Choice Series II
Preamp: Adcom GFP-750
SACD/CD: Oppo BDP-95
Tuner: Sansui TU-717
TT: Technics SL-MA1
Phono Pre: Emotiva XPS-1
Music Server: Mac Mini w/JRiver - iPad w/JRemote
DAC: Eastern Electric MiniMax Plus
Other Polks: SDA: 1A, 1C, 2B, CRS+ / Monitor: 10A, 5jr, 4 / RT5
Post edited by stogie on
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Comments

  • nspindel
    nspindel Posts: 5,343
    edited February 2014
    1. I added a bead of hot glue between the ring and the cabinet to help avoid resonance.
    2. The PR ring should be crimped so it can be bent and snapped in half.
    3. Drill very carefully to avoid damaging the cabinets, and use armacell to make gaskets. Don't over tighten the armacell, tighten it to the point where you feel some torgue, then allow it to compress for two days, come back and tighten more until you feel the torque again, then allow to compress again for two days, then come back a third time and tighten fully.
    Good music, a good source, and good power can make SDA's sing. Tubes make them dance.
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  • pitdogg2
    pitdogg2 Posts: 25,442
    edited February 2014
    I never needed to snap my PR rings in half just bend to get in and straighten back out. That poly is a very good idea as well as any oil base black paint I would think.
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  • stogie
    stogie Posts: 230
    edited February 2014
    Poly as in polyurethane? I saw the little score marks on the rings- I guess that helps facilitate the bending. If the original gaskets are in good shape is there any need to replace?
    Speakers: Polk SDA-SRS xovers rebuilt by David, RDO194's, Dynamat, BH5, glued magnets, new cloth, custom aluminum terminal plates with Cardas posts and Speakon interconnect
    Speaker Cables, Jumpers & Interconnect: DIY Douglas Connection
    Power Amp: Sunfire Architect's Choice Series II
    Preamp: Adcom GFP-750
    SACD/CD: Oppo BDP-95
    Tuner: Sansui TU-717
    TT: Technics SL-MA1
    Phono Pre: Emotiva XPS-1
    Music Server: Mac Mini w/JRiver - iPad w/JRemote
    DAC: Eastern Electric MiniMax Plus
    Other Polks: SDA: 1A, 1C, 2B, CRS+ / Monitor: 10A, 5jr, 4 / RT5
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  • pitdogg2
    pitdogg2 Posts: 25,442
    edited February 2014
    stogie wrote: »
    Poly as in polyurethane? I saw the little score marks on the rings- I guess that helps facilitate the bending. If the original gaskets are in good shape is there any need to replace?

    you are correct on both accounts. no need to replace if in good shape
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  • nspindel
    nspindel Posts: 5,343
    edited February 2014
    I never used the poly, but that's a good idea. If you do snap the PR ring in half, it is still perfectly stable.
    Good music, a good source, and good power can make SDA's sing. Tubes make them dance.
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  • Toolfan66
    Toolfan66 Posts: 17,243
    edited February 2014
    There is no need to snap the ring in half, just a slight bend, and force it in, once inside bend flat..

    I have always wanted to use poly on the edge but have never got around to do it..
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  • Hofy
    Hofy Posts: 169
    edited February 2014
    Since you are working on CRS's, you should only have to bend the ring for the passive. All others should fit through the passive's hole no problem.

    Also, I thought these rings are not currently available?
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