Seriously!?!?...
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joebass3
Posts: 252
Just gave my beat up Monitor 7b's some much needed attention. Along with all the normal mods I also replaced the vinyl wrap with veneer, rebuilt the crossovers, and installed some front to back cabinet bracing. Everything was going smoothly and then this happened! Seriously!?
I guess in my attempt to make sure everything was sealed as tight as possible, I over torqued the screws. Definitely won't seal properly with that piece broken out. The plastic is 40 years old too, but obviously it was my fault.
I made a couple of plates out of 16 gauge steel as a temporary fix while I try to find a replacement, but they might just stay though. They look decent and are definitely functional. Plus who looks at the back of a speaker anyway?
I guess in my attempt to make sure everything was sealed as tight as possible, I over torqued the screws. Definitely won't seal properly with that piece broken out. The plastic is 40 years old too, but obviously it was my fault.
I made a couple of plates out of 16 gauge steel as a temporary fix while I try to find a replacement, but they might just stay though. They look decent and are definitely functional. Plus who looks at the back of a speaker anyway?
Comments
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Hmm. Pretty dang close to where the braces are located.George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Crown D150 amp
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
Hurricane nuts and threaded bolts, torque them down and your cabinet will also stiffen/strengthen there.Don't take experimental gene therapies from known eugenicists.
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Just gave my beat up Monitor 7b's some much needed attention. Along with all the normal mods I also replaced the vinyl wrap with veneer, rebuilt the crossovers, and installed some front to back cabinet bracing. Everything was going smoothly and then this happened! Seriously!?
I guess in my attempt to make sure everything was sealed as tight as possible, I over torqued the screws. Definitely won't seal properly with that piece broken out. The plastic is 40 years old too, but obviously it was my fault.
I made a couple of plates out of 16 gauge steel as a temporary fix while I try to find a replacement, but they might just stay though. They look decent and are definitely functional. Plus who looks at the back of a speaker anyway?
I have an original 7B binding post plate you can have. You will need to transfer your fuse holder though as it was removed from mine. Send me your info via PM if you want it.
Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
Don't feel bad, not your fault. Mine (1980) had disintegrated around most of the screw holes without being touched. I replaced mine with custom fabricated aluminum discs and Cardas posts.Polk Audio first generation RTA-12s; 12 inch Polk Stands; DHS Speaker Service upgraded crossovers w/ Sonicap/Mills; the "westmassguy anti-lobing mod" (hyperdamped outer drivers/mirror imaged); tweeter anti-diffraction mod; Cardas binding posts; Neotech UPOCC internal wire; foam-lined inner driver baskets; xschop phase plugs; deleted fuses; Hurricane nuts; Sonic Barrier; Dynamat XtremeAyre K-5xeMP preamplifierCambridge Audio 840C CD player; Herbie's Audio Lab Super Black Hole CD MatD-Sonic Custom Audio M3a-600M monoblock amplifiersNAD 4155 FM/AM tunerSilnote Audio Morpheus Reference II Series II balanced interconnects; Virtue Audio single-ended interconnectsKimber 12TC speaker cable w/Furez connectors; VH Audio Flavor 4 power cables w/Furutech connectorsHerbie's Audio Lab system isolation: Tenderfeet, Big Fat Dots, Grungebuster Dots, Little Fat GlidersDedicated 20A/10 AWG circuit; Furutech GTX-D (G) outlet; Furutech eTP80; Shunyata Research Venom Defender; Synergistic Research Orange fuses
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I had the same issue about 4 weeks ago on one of my 7Bs. My fix was my son 3d printed out a black "ring" about 0.09" thick and I used jbweld to epoxy the ring to the plate inside surface. Drilled out for screws, then screwed the plate on at the broken areas with longer screws and a large flat washer to capture the remaining plastic. Seems to work well for me, at some point I will look to replace the plate as well.
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Does this imply we are ALL getting OLD?"Sometimes you have to look to the past to understand where you are going in the future"
Harry / Marietta GA
