Building bipoles

JayMX
JayMX Posts: 446
in DIY, Mods & Tweaks
So I spent the afternoon hacking another couple of pairs of Krix cinema speakers, turning them into bipoles for my buddy's home theater. I built a center channel out of another pair of these back in December.
https://forum.polkaudio.com/discussion/184503/building-a-center-channel-with-sda-srs-styling-and-crossover-questions#latest

I’ve always used plain old wood glue on projects like this, but I was wondering if anyone who has built speakers could recommend better glue, like what polk used on the vintage cabinets? That stuff is tough! Any suggestions would be appreciated! Thanks in advance.
Dissembled the original cabinets carefully, trimmed to fit the new form factor.
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First try was shallower. Had to go to a 45 deg to maintain clearance for the drivers and ports inside the new cabs.
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Dry fitting the final form factor:
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Current Collection: Monitor 4a (Peerless), Monitor 5B (Peerless), Modified Monitor 7b (Peerless), RTA15TL (SL3000), SDA CRS+ (194’s), SDA SRS 2.3TL, R100's, R200’s, R300 🤩
Pairs that have passed through: Monitor 4b (Peerless), Monitor 5a (Peerless), Monitor 5b (SL1000), Monitor 5b (SL2000) (4x pair), Monitor 7b (Peerless), Modified Monitor 7c’s (194’s), Monitor 10a (Peerless), Monitor 10b (5x pair), RTA8, RTA8TL, RTA 11T, RTA12c (194's), SDA CRS, SDA 2 (2x pair), SDA 2a, SDA 2b, SDA 1b, SDA 1c, SDA SRS 2 (2x pair), SDA SRS 3.1TL (198’s) (2x pair)...and more to come, it’s a sickness.
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Comments

  • VR3
    VR3 Posts: 28,732
    Looks good, simple wood glue is pretty strong
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • xschop
    xschop Posts: 5,000
    I've used Liquid Nails when adding extra bracing to some cabinets.... Takes a little longer to fully cure, but forget about trying to remove or reset it.
    I always enjoy watching your build threads Jay.
    Don't take experimental gene therapies from known eugenicists.
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  • JayMX
    JayMX Posts: 446
    Getting closer on these. :)
    Kinda excited to see how they sound and work out. Concerned that the bi-poles may have more driver than volume. But they’re surrounds so we’ll roll em off a little high ;)
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    Current Collection: Monitor 4a (Peerless), Monitor 5B (Peerless), Modified Monitor 7b (Peerless), RTA15TL (SL3000), SDA CRS+ (194’s), SDA SRS 2.3TL, R100's, R200’s, R300 🤩
    Pairs that have passed through: Monitor 4b (Peerless), Monitor 5a (Peerless), Monitor 5b (SL1000), Monitor 5b (SL2000) (4x pair), Monitor 7b (Peerless), Modified Monitor 7c’s (194’s), Monitor 10a (Peerless), Monitor 10b (5x pair), RTA8, RTA8TL, RTA 11T, RTA12c (194's), SDA CRS, SDA 2 (2x pair), SDA 2a, SDA 2b, SDA 1b, SDA 1c, SDA SRS 2 (2x pair), SDA SRS 3.1TL (198’s) (2x pair)...and more to come, it’s a sickness.
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  • JayMX
    JayMX Posts: 446
    Thanks @DSkip, it’s all good! Fun way to spend some time. Learned on this project that working with MDF and veneer is much easier than solid hardwood. The bipole endcaps are solid oak and I ruined two 1/2” boards getting them right. I built top and bottom caps out of solid oak for the bookshelf speakers (will be rear surrounds) I ruined two of them milling and trimming them. Very frustrating. So the tops are now MDF with oak veneer. Lessons learned and the woodwork is pretty much done now. Bookshelf cabinets’ cloth covered side panels and grille cloth will be completed tomorrow. Need a little more stain and poly on the cabinets and this set will be done!
    Current Collection: Monitor 4a (Peerless), Monitor 5B (Peerless), Modified Monitor 7b (Peerless), RTA15TL (SL3000), SDA CRS+ (194’s), SDA SRS 2.3TL, R100's, R200’s, R300 🤩
    Pairs that have passed through: Monitor 4b (Peerless), Monitor 5a (Peerless), Monitor 5b (SL1000), Monitor 5b (SL2000) (4x pair), Monitor 7b (Peerless), Modified Monitor 7c’s (194’s), Monitor 10a (Peerless), Monitor 10b (5x pair), RTA8, RTA8TL, RTA 11T, RTA12c (194's), SDA CRS, SDA 2 (2x pair), SDA 2a, SDA 2b, SDA 1b, SDA 1c, SDA SRS 2 (2x pair), SDA SRS 3.1TL (198’s) (2x pair)...and more to come, it’s a sickness.
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  • Mike Reeter
    Mike Reeter Posts: 4,315
    The Cabs look great, VERY nice work!
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  • JayMX
    JayMX Posts: 446
    edited May 2019
    Just need to redo grille cloth and wipe on a little poly and I’ll be done with these suckers!
    The bipoles sound surprisingly good. Experimented with wiring the crossovers out of phase di-pole) and that did bad things to the sound. I’ll have to see what sounds best in room where they’re going to be installed.
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    qk76rwr6v3vl.jpeg
    Current Collection: Monitor 4a (Peerless), Monitor 5B (Peerless), Modified Monitor 7b (Peerless), RTA15TL (SL3000), SDA CRS+ (194’s), SDA SRS 2.3TL, R100's, R200’s, R300 🤩
    Pairs that have passed through: Monitor 4b (Peerless), Monitor 5a (Peerless), Monitor 5b (SL1000), Monitor 5b (SL2000) (4x pair), Monitor 7b (Peerless), Modified Monitor 7c’s (194’s), Monitor 10a (Peerless), Monitor 10b (5x pair), RTA8, RTA8TL, RTA 11T, RTA12c (194's), SDA CRS, SDA 2 (2x pair), SDA 2a, SDA 2b, SDA 1b, SDA 1c, SDA SRS 2 (2x pair), SDA SRS 3.1TL (198’s) (2x pair)...and more to come, it’s a sickness.
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  • Conradicles
    Conradicles Posts: 6,092
    Very nice!
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  • VR3
    VR3 Posts: 28,732
    looks great!!!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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