1964 Magnavox Astro-Sonic

[Tom Bavis]

R2050100 and R2051300 are in folder 809-6 - that's probably it. It may list the folder for the changer once you find it. Here's my posting on where to find Photofacts... http://www.audiokarma.org/forums//sh...ad.php?t=82521

[Pioneer727]

Tom your the man if there is any thing I can do for you Just let me know.

Big Thanks

Ron

[dano]

I could be wrong, but I believe that the Micro-Matic is a Maganavox version of the "COLLARO CONQUEST" changer. There's info about it here: http://mypage.iu.edu/~lrobins/collaro.htm They're supposed to be one of the best changers as I understand it, they automaticly detect record size and reject at a constant speed regardless of turntable speed. BTW, I have a AstroSonic console of similar vintage that I'd make someone a great deal on... it's currently in my dining room and has to go!

[Pioneer727]

I think you are right mine does tap the edge of the record.

Ron

[Celt]

Originally Posted by Pioneer727

I think you are right mine does tap the edge of the record. -Ron

Yup. Always thought that was so cool. Many also muted the signal from the cartridge during the change cycle.

[Randy Bassham]

You're absolutely correct, sometime in the early 60's or late 50's Magnavox bought Collaro. The early ones sensed record size by a small finger that was located just to the left of the balance arm. Then they came out with the changer that the tone arm tapped the edge of the record to sense the size of the record, the tone arm sits down on the record about 1/4 inch in from where it was stopped, so if you came up with an 8 1/2 inch record it could play it just fine.

Around 1970 they cheapened up the changer and eliminated the second drive wheel that ran the changer mechanism. This changer still senses the size by tapping the record but the cycling cam has three grooves for 7, 10, and 12 inch records and arm sets down according to which groove is lined up by the record tap. On these changers the changer mechanism is ran off a gear around the center turntable bearing.

IMHO the early ones that sense record size by tapping the edge of the record and have a separate idler/drive wheel running directly off the motor are just about the best record changer used of the period. Very early Magnavox's before Collaro used Webster-Chicago and a few portables can be found with VM changers. There is a rare portable that uses the RCA 45 RPM changer.

I wish I had a dollar for every one of these changers I've worked on, about the only problems we had was due to hardened grease and dirt causing bearings and pivot points to lockup, and idler wheels.

I bought all the Magnavox service manuals from my former employer when he retired and closed up shop so I'm pretty well stocked up on service manuals if anyone needs a copy of one.

Originally Posted by dano

I could be wrong, but I believe that the Micro-Matic is a Maganavox version of the "COLLARO CONQUEST" changer. There's info about it here: http://mypage.iu.edu/~lrobins/collaro.htm They're supposed to be one of the best changers as I understand it, they automaticly detect record size and reject at a constant speed regardless of turntable speed. BTW, I have a AstroSonic console of similar vintage that I'd make someone a great deal on... it's currently in my dining room and has to go!

[Pioneer727]

I could sure use one for my 1965 Astrosonic the model and chassie number I gave earler in the thread post #6

Thanks

Ron

[Randy Bassham]

Originally Posted by Pioneer727

I could sure use one for my 1965 Astrosonic the model and chassie number I gave earler in the thread post #6

Thanks

Ron

Send me a PM with your address......

[nddpm]

Randy I sent you this note yesterday and I think I inadvertendly deleted your reply could you possibly resend it ? Thanks "Hi Randy I'm new to this forum and am really enjoying it. Hope you can help, recently acquired a gorgeous Astro- Sonic console and of course it needs work. What would you recommend book wise I believe the ouput problem is in the tuner , the amp works fine DI'd, the spkrs work fine DI'd ,but using the radio or TT there is very little output on the left side .Should I order a sam's ? they list three possibly , my receiver says R20701BA . The amp says A57502AC on stickers. The cabinet says 3ST686 serial #4674968 mfg 09/65 and boy is this thing mint not a scratch and wow do those 15 inch spkrs purr .Thanks for any help Norman Dayan ( [email protected] )"

[nddpm]

Randy I've noticed how helpful and knowledgable you've been , if I can find my Chassis and TT #s do you think it's possible you could send some copies of the service manuals, or where to get them ? Oh and where the heck can I find a Maggie/Excelite 4 in 1 tool ?? Thanks Norman Dayan [email protected] p.s. I think you already replied to my request once already but I inadvertendly deleted your e-mail it went into my junk file automatically by mistake Thanks again

[nddpm]

Hi Randy I'm new to this forum and am really enjoying it. Hope you can help, recently acquired a gorgeous Astro- Sonic console and of course it needs work. What would you recommend book wise I believe the ouput problem is in the tuner , the amp works fine DI'd, the spkrs work fine DI'd ,but using the radio or TT there is very little output on the left side .Should I order a sam's ? they list three possibly , my receiver says R20701BA . The amp says A57502AC on stickers. The cabinet says 3ST686 serial #4674968 mfg 09/65 and boy is this thing mint not a scratch and wow do those 15 inch spkrs purr .Thanks for any help Norman Dayan ( [email protected] )