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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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In Reply to: 6DJ8 tube.... posted by Cougar on December 2, 2018 at 08:33:41:
You can roll tubes to your heart's content in the front end, and it will not affect the alignment in the least. You can also roll away on the MPX subchassis all you like. V102 is the stereo audio amp stage and is very responsive to rolling 12AT7s. Of all I've rotated through that particular tuner, an early 60s Siemens sung best, and offered nice tonal balance with the Tele line out amp, but your mileage may vary.
Just an aside, but substituting AT7s for the X7s used on the later subchassis version more often used in the receivers can also help firm up a flabby stereo beacon lock when so equipped.
Just don't mess with the IF tubes or mix their sequence up, as that could affect the alignment.
Hopefully, you sent it to San Diego with fresh IF tubes installed, or Mike did you a favor and dropped in fresh ones for you.
Aligning around old IF tubes whose best days may be behind them is not the best value. Always align on new IF tubes if you can. Even RCA Command IFs are cheap. Alignments plus shipping costs both ways is not.
I say aligning rather than realigning with your KM-60, as it was a kit tuner, and its first true alignment was likely the one Zuccaro just did on it. That is why the KM-60 was a notorious 'sleeper' tuner for many years. A good tuner when meter-aligned. But once expertly bench aligned, it was transformed into a very competitive giant killer on a good signal. Again, far more tuner than you will ever need in 2018.
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Follow Ups
- RE: 6DJ8 tube.... - sgmlaw 21:38:07 12/09/18 (0)
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