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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Thu 16, 2018 4:26 pm 
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Joined: Nov Wed 27, 2013 5:59 am
Posts: 685
Location: Metzger Oregon
For what it's worth, your turntable is a VM made unit. Yours looks to have very nice cosmetics, you may want to think about just swapping the guts from a more plane jane looking VM to get yours up and going. I have a couple extra should you ever decide to go down that path, but it sounds like that's not in the near future.

Either way, I always thought the Motorola changers of that era were some of the nicest looking units ever made. Even non-functional I'd take it over any other brand!


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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Thu 16, 2018 4:38 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Fernandina Beach, FL
Steve, that sure looks like a VM turntable. Should be able to fix it easily!

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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Thu 16, 2018 4:44 pm 
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Joined: Jan Mon 18, 2010 2:13 am
Posts: 19361
Location: Dayton Ohio
I remember buying a motorola changer just like that at Dayton Hamvention.

-Steve

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Radio Interests
-Zenith
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-Pre-War FM
Consoles and floor models, the bigger, the better!


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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Fri 17, 2018 12:18 am 
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Location: Central PA 16801
the style of the changer is very nice. it is right up there with the nipper dog changer in my RCA SHF-5.

thanks for all the offers, but i have absolutely no desire to do any turntable work or spend the money and time on restoring one.

until one spends the money to rebuild the idler, then perhaps a new cartridge, spare needles, and although i'm good for the cash part, the money and disliking to work on it is absolutely not worth it to me.

i won't use the turntable anyway.

i will just enjoy the sound that pumps from it via my computer, cd player, or tuner.

steve

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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Fri 17, 2018 8:37 pm 
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Location: Central PA 16801
here are four pages (at the time this link was posted) that completely, whole heartedly, fundamentally, thoroughly, fully, utterly, unconditionally, and exactly describe why I despise working on and refuse to work on turntables anymore.

I could even add to it with more experiences as I don't believe it even touches on cartridge issues.

I've done TT restoration many times in the past and can do it quite well with success, but not without pain, agony, and frustration.

just like philco, turntables (and any kinds of hobby frustration) are no longer a part of the equation on the Rabbit's bench. I don't mind it when the hobby becomes "work", but when it becomes frustrating, irritating, and cantankerous, those days of putting up with it are done.

I'm just getting older 8) .

viewtopic.php?f=9&t=342531

this nails it folks ^^.

steve

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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Sun 19, 2018 4:16 pm 
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Joined: Jan Mon 18, 2010 2:13 am
Posts: 19361
Location: Dayton Ohio
I found it. I think its the same

Thing is I remember paying $20 because I thought it was so attractive with the chrome.

I can see if its easily lubricated and restorable to operation, in case of interest. All I would want is my $20 back.

-Steve


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Radio Interests
-Zenith
-Sparton
-Pre-War FM
Consoles and floor models, the bigger, the better!
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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Sun 19, 2018 7:28 pm 
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Location: Central PA 16801
hi steve,

i certainly appreciate that, but i'm satisfied with the set as it is.

thanks again,

steve

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 Post subject: Re: Motorola SK14M...Story...and Schematic Needed...(Sigh)
PostPosted: Aug Sat 25, 2018 10:40 pm 
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Joined: Nov Fri 10, 2006 12:24 am
Posts: 2500
Location: Thornhill, Ontario, Canada
rocketeer wrote:
True, but I run a bucking transformer as much for the chassis components, including the transformer, as for the tubes... Larry
All of my mix-and-match stereo tube amps run off bucking transformers for that reason... and we have a 125 VAC supply They are variously P-P ECL82, 6V6, 6BQ5, 6L6, KT66 and EL34.
Cheers,
Roger

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Thornhill, Ontario
Ontario Vintage Radio Assoc. http://www.ovra.ca


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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Sun 26, 2018 1:33 am 
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Location: Warner Robins, GA
The only time I run a bucking transformer is when the line voltage is higher than the specified operating voltage as in my opinion thats the only time it is needed.


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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Sun 26, 2018 4:43 am 
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Location: Central PA 16801
i absolutely love my new power transformer up on the pole.

114-117 VAC all day/night long.

steve

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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Aug Mon 27, 2018 11:49 am 
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Location: Warner Robins, GA
Very nice.

Where I live at least 5 homes share the same pole transformer so line voltage can vary a bit.

Seems a little more stable in the newer trailer though versus the old one my dad and I lived in.


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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Mar Tue 26, 2019 2:15 am 
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Joined: Mar Mon 25, 2019 8:18 pm
Posts: 1
Hey man, I’ve had the Motorola S14m cabinet for awhile dying to pair it with the sk14m and an additional S14m cabinet to complete my home sound system. If you are ever interested in selling please let me know. They’re really well made beautiful pieces.


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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Mar Thu 28, 2019 10:07 pm 
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Location: Central PA 16801
nope, not interested in selling, but thanks for asking.

Man

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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Mar Fri 29, 2019 9:17 pm 
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Location: Thornhill, Ontario, Canada
Tube Radio wrote:
The only time I run a bucking transformer is when the line voltage is higher than the specified operating voltage as in my opinion that's the only time it is needed.
Each to his own. I don't like running 6.3 volt heaters as high as 6.85 volts but, IMHO, the effect of a higher B+ is rarely a problem as long as the radio/amplifier has been properly recapped.
Cheers,
Roger

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Thornhill, Ontario
Ontario Vintage Radio Assoc. http://www.ovra.ca


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 Post subject: Re: Motorola SK14M HiFi Stereo as Done as It Will Get
PostPosted: Mar Sat 30, 2019 12:37 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 20351
Location: Warner Robins, GA
I once ran a Zenith K-731 radio at 150Vdc B+ as I did not add a dropper resistor after replacing the selenium and the volume would never go exactly to zero.

All depends on the circuit.

I once had a push pull 6BQ5 amp I built using a Hammond transformer which had a 115 volt primary. Within about a year or two it cooked the 6BQ5 tubes as it ran on 120Vac. Installed a 5Vac transformer to buck the primary and never burnt up another set of tubes.


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