Just acquired - 1960s Stromberg Carlson console

Discussion in 'Tube Audio' started by Jrusso07, Jan 12, 2019 at 7:51 AM.

  1. Jrusso07

    Jrusso07 New Member

    Messages:
    15
    Location:
    Penn Yan NY
    This was my Dad’s. He worked at Stromberg Carlson in the 50’s and 60’s.

    The amp is a model ASR-880-G. It’s covered in dust...
    FB9AA2AF-81CB-48D9-8E19-B4853252CCD9.jpeg 16BEFFAF-9C78-408B-B814-8BCAC1688C6D.jpeg

    The tuner is a model SR-440
    7FC0CC72-C1B7-4ED7-955A-7F08EFA64B58.jpeg 1D146D17-4B22-4CCE-BE2C-91F13001D84D.jpeg

    Speakers are LK-486, apparently Dad didn’t like the “acoustic labyrinth” effect as he stuffed it with insulation
    E3D7EE43-3110-4B3E-903A-51B694B16DF6.jpeg

    Has a Garrard record changer on a pull out drawer. Drawer has a auspension to support the turntable
    8A7FF24C-BDC4-4708-9752-CC4C72890451.jpeg

    Will be sorting through this with intent to get it operational and sounding good again.

    Will need your help!
     
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  2. gadget73

    gadget73 junk junkie Subscriber

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    Changer looks like an RC-210. If its typical, mostly thats a clean, de-grease and re-lube, and possibly an idler wheel. Basically every 60 year old changer needs the same stuff.

    The amp and tuner likely also want the same cleaning and re-cap. Check the resistors too. A very large number of the ones in my asr--433 were considerably off. Not sure if that has to do with the brand of resistors used or storage conditions, but its worth a look.

    If you're planning to bring it up before replacing parts (and I would), dust it off first and bring it up using a variac or a dim bulb tester to keep an eye on things. There are some more details in the sticky up at the top of this forum

    I used to know a guy who had a Penn-Yan boat. It was a pretty cool machine, that tunnel drive setup worked well.
     
  3. Tom Bavis

    Tom Bavis Audiophool Subscriber

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  4. Jrusso07

    Jrusso07 New Member

    Messages:
    15
    Location:
    Penn Yan NY
    Thanks guys.

    Changer is a RC-210.

    Spent a few hours cleaning them

    Have not brought them up yet. Most of the tubes are Stromberg tubes.

    EF3202F1-C6D0-4483-9CBD-9B2EB4076225.jpeg EBCE62D3-8CA0-46D0-90DF-DC0B1867CCFA.jpeg 2C10E55E-8A1C-49A3-8EF5-0D67F94A39C3.jpeg

    First question: on the Receiver Dad had two boxes in series with the front end.

    One in a metal box, three tubes (one missing) and a pot on the front.

    The other in a plastic case (home brew) with a circuit card. It has ac power to it.

    Any idea of function? Modern FM signal upgrade. Maybe tube box is a signal booster?

    Pics follow

    8165C75C-A061-4D73-BAF5-FA22258277C3.jpeg D06F2138-98E3-4CEA-979D-35C1C6AEF2FD.jpeg 87D6D4FB-9715-48C8-9035-37C6CE7AC25F.jpeg
     
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  5. Tom Bavis

    Tom Bavis Audiophool Subscriber

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    The one in the plastic box is the Stromberg multiplex adapter for stereo FM. See my website.

    The other MIGHT be an SCA receiver (SubCarrier Authorization) to receive other signals piggy-backing on the FM signal. (It's factory made - rivets not screws. And only has ONE output - so it's not for stereo)
     
  6. Jrusso07

    Jrusso07 New Member

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    15
    Location:
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    Thank you, Tom!
     

     

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  7. gadget73

    gadget73 junk junkie Subscriber

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    Tom, did SC actually use a plastic box for their MPX units? Almost looks like an engineering prototype with the plastic case and the perf board.

    Is the control on the front of the mystery box a variable knob or an on/off switch? I'd think an SCA setup would just be a switch, but who knows. Where was it connected in the system?
     
  8. mibag6

    mibag6 AK Subscriber Subscriber

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    That is one fine looking console. I like the components in the front without the flip up top, gives you the option of putting a tv or other components on top.
     
  9. Jrusso07

    Jrusso07 New Member

    Messages:
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    Location:
    Penn Yan NY
    15BDD40D-EC09-4600-A7E1-2D115F69BA54.jpeg The mystery box was before the multiplex adapter. The knob on the front is a potentiometer.

    There was a Y phone plug on the input side but I failed to get info on the other connection (Doh!)
     
  10. adpopulum

    adpopulum Well-Known Member

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    Location:
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    Nice console. Glad to hear you are going to keep her intact. So many of these iconic statements of style and luxury have been lost over the years. Watching with interest!
     
  11. Tom Bavis

    Tom Bavis Audiophool Subscriber

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    The Stromberg mpx was in a metal box; his father worked for Stromberg and maybe he got a reject which he fixed up (or maybe it WAS a proto...). PCB and transformer look original, connectors are not. SCA and multiplex use the same input - unfiltered "mpx out" on the tuner. Stereo uses 38 kHz subcarrier, SCA uses 67 KHz (and some others too). Muzak used SCA but there were many others, mostly pay services that would rent the receivers.
     

     

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  12. Jrusso07

    Jrusso07 New Member

    Messages:
    15
    Location:
    Penn Yan NY
    Thanks for the comments and help. I will rebuilt the system and put it back into the console - the way Dad had it. I can tell you, the sound from this turntable and amplifier is (was) spectacular, made me a lover of good audio all my life. Nothing beats vinyl and nice warm tubes
     
    Last edited: Jan 13, 2019 at 7:37 AM

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