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|    rec.audio.tubes    |    Tube-based amplifiers... that go to 11    |    52,877 messages    |
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|    Message 52,523 of 52,877    |
|    Alan Marcy to jcwort...@gmail.com    |
|    Re: old tube phonograph questions    |
|    20 Oct 16 04:57:54    |
      From: tubegardenia@gmail.com              On Wednesday, October 19, 2016 at 4:43:10 PM UTC-5, jcwort...@gmail.com wrote:       > On Saturday, October 15, 2016 at 12:17:14 PM UTC-4, jdu...@kit       eryschools.com wrote:       >        > > > My parents have one of units that was purchased in the 50's under the       name "Kelton". I think that this is the Lang & Taylor Model designation. It       came with a schematic and parts list for the A-40 amplifier. The unit came       with a Collaro RS-456        record changer with a ceramic cartridge. It sounds amazing, but I'd be afraid       to put any of my records on it due to the weight of the tone arm. The 45s       seem to sound better than they do on audiophile equipment. Our unit came with       an extension speaker        that looks the same as the console.       > >        > > I have my grandparents console. It is called The Kelton by Lang &       Taylor. it is from the 1950's in a Mahogany case. I love the way it looks.        It has all the paperwork. It doesn't work and I am taking it to be       repaired. Can you tell me what I        am in for? I really hope I can get it to working condition.       >        > I'm presently restoring my parent's unit.       >        > The turntable doesn't spin and the amplifier has hum. The sound is not as       good as it was 60 years ago.       >        > To start, I'm replacing all of the paper electrolytic and non-electrolytic       paper capacitors in the amplifier and will go from there. I checked the       tubes. They're all good, but the 12AX7s are a little low on emission. The       power cord is frayed. I'm        going to replace this with a 3-wire power cord.       >        > The electrolytic capacitors in the crossover network will probably have to       be replaced as well. I'm concerned that Polarized electrolytic capacitors       were used in the original design instead of non-polarized capacitors. This is       not good design        practice. Reverse voltage on an electrolytic capacitor can damage the       capacitor.       >        > The motor is frozen on the turntable. Removing the dried out grease and       lubricating should fix the problem. The rubber roller may need to be       replaced. I'm also looking for a replacement for the original Collaro RC456       changer as another possibility.        Modern turntables should provide less wear on the vinyl media.                     ******                     Hi RATs!              Yes, new TT, even modestly priced units, are far superior.              Use Polypropylene film in oil caps in crossover. They last forever and are       very clear sounding.              If you go crazy they are also very good for the power supply. ($$$)              Happy Ears!              Al               --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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