Common misconception of DCM meaning. Check under my name on the left. That's what Steve Eberbach said it means.
DCM Time Window Overhaul
- Thread starter bfstrysik
- Start date
Common misconception of DCM meaning. Check under my name on the left. That's what Steve Eberbach said it means.
I am going to send the driver to a speaker repair place I spoke to. He says he can rebuild it. End caps are completed. Time to start putting things back together. I think I am going to mount the c/o on the side of the cabinet below the tweeters. If I mount it on the top the air core inductors are going to be very close to the woofer magnets. Any thoughts??
What about the bottoms? Any problems running longer wiring?
I could mount the c/o's on the bottom, but I think the pvc ports will not allow enough room. Also I would like to be able to get at them easily if need be. I think I will install 4) 8-32 hurricane nuts, 1 at each c/o board corner and use a machine screw to mount them in place. To get at them or remove them, you will just have to unscrew one of the woofer and reach in to get at it. Waiting on some hurricane nuts and wood screws to start the re-assembly.
What about the bottoms? Any problems running longer wiring?
I could mount the c/o's on the bottom, but I think the pvc ports will not allow enough room. Also I would like to be able to get at them easily if need be. I think I will install 4) 8-32 hurricane nuts, 1 at each c/o board corner and use a machine screw to mount them in place. To get at them or remove them, you will just have to unscrew one of the woofer and reach in to get at it. Waiting on some hurricane nuts and wood screws to start the re-assembly.
I received the repaired driver yesterday. I sent it to Sound Speaker Repair in Tuscon. Voice coil was open so he had to do a recone/rebuild. Fast turn around time. Dust cover does not match the original, but not much of a choice. I installed the hurricane nuts to mount the c/o board. I drilled holes to mount the drivers with screws. I used some plexiglass I had laying around and fashioned a mounting plate for the binding posts. I spray painted it flat black. I re-attached the bottom of the cabinet with Power Grab and used a finish nailer to complete the re-install. I then used 3 wood screws to attach the bottom end cap. I decided to not use any adhesive, as the screws are holding tight. I used dabs of Power Grab to fill/seal the little nail holes that held the sock in place. I am going to use velcro to attach the sock. Gasket material has been applied to the drivers, so they are ready to mount. Next steps are to put the dampening material back in place, re-attach the top of the cabinet, screw the top end cap in place and mount the drivers. Hopefully finished in the next couple of days. A lot of work and time spent figuring out things step by step. Second TW should go a lot faster. 
Very very nice job on these, helps motivate me to get my QED's redone! 
Al
Al
Nah, you won't. Here is Steve Eberbach, founder of DCM, talking to a Michigan audio club. Go to around 6:00 and you'll get your reference. It helps if you're old, like me, and remember the Smothers Brothers and Pat Paulsen.
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Donkey Karma
Super Member
Well done indeed! I always preferred to the time window sound to the Time frames.
600 and above always seemed a bit sloppy to me. Although I have never heard the 1Ks.
I agree with Glen. Love to see the reconed driver.
600 and above always seemed a bit sloppy to me. Although I have never heard the 1Ks.
I agree with Glen. Love to see the reconed driver.
I owned TF2000's for about a year. Room was not correct for them. I couldn't give them enough amps. The sound was good, but I've always been a small speaker guy. While they were superb examples of that rare speaker, I let them go. Happier with my TW1's (especially considering the low WAF factor of speakers almost 6' tall).
GD70
Lunatic Member
Did you listen to it and are you happy?
GD70
Lunatic Member
The grey sock looks nice!
Regarding crossover "burn in", caps burn in immediately, the moment current passes through them. What's adjusting are your ears! The rebuilt woofer looks very good and your wood cap are in way better condition than mine were when I found my TW's. You're doing a great job, carry on!
Glenn
Thanks Glenn. I have to say my Polk RTA 12b's at about the 200 hour mark after the c/o's were rebuilt had an absolutely dramatic change. From the low end to the highs. I even had a friend that had heard the speakers right after they were rebuilt and then come over a week or so after that and the first thing he asked was "what did you do the the speakers?" He was amazed. My other rebuilds have had similar results, but the 12's were the most dramatic. Just my experience FWIW.
Looking good, been watching this daily!
