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#1
03-29-2011, 10:16 AM
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listening to some LP's today I could not help but notice how much better the highs are reproduced. seems like I may have to dig into the tuner MPX output at some point and rework the de-emphasis networks. I did this to another RCA(had forgotten that until just now). The LP's sound great so I figure either something has drifted in the tuner OR maybe just todays programming has been over worked towards the bass side of things for better thumping. I used to have the local public radio station to test on since it seemed to have the least "bass" processing going on, but they dropped there music format a couple years ago. Maybe it was an attempt back in the day to have a Hi filter cut as well, to get rid of hiss. I have other vintage gear that does something like that, just not as crude as chopping it all off up high.
Last edited by DaveWM; 03-29-2011 at 11:33 AM. 
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#2
05-08-2011, 05:44 PM
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swapped out the CRT for the one I did the de-cat on. I used foam stick on weather strip all around the edge of the lens. Lined it up on the CRT and used some packing tape on the top and bottom to just hold it in place.
the actual replacement took about 45min start to finish, most of which was from note taking on measurements on the neck parts. Powered it up and I got a nice bright pic, but it will of course need a purity and convergence setup. I decided had done enough, so will give to that later next week when I am in the mood for it. the old CRT is now sitting in the nasty bong water in the kiddie pool starting the de-cat process on it.
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#3
05-09-2011, 04:50 PM
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did a 1st pass a the purity and convergence, I had to swap the blue and red static magnets around and did some minor work on the dynamic.
I am really impressed by the overall color and esp the brightness of the set. I will button it up and snap some pics it a bit.
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#5
05-09-2011, 10:07 PM
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checked my before photo's its on right. I can get it pretty much correct with the yoke back in place, just bugs me, this is the 1st time I could not get the blob centered with the green and blue triad blobs around it. I can get a red cloud but one side extends over pretty much to the edge. and I only get two clouds each of green and blue.around it on the the other side.
I have a couple of the dynamic pots maxed out, I wonder if the dynamic convergence is effecting the ability to set up the center red blob?
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