Grommes Precision Model g-23

SIHABSIHAB Posts: 740
what do I have here? :*
@mhardy6647

Comments

  • SIHABSIHAB Posts: 740
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  • SIHABSIHAB Posts: 740
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  • SIHABSIHAB Posts: 740
    passes smoke test. :#
  • SIHABSIHAB Posts: 740
    I have a speaker that can do 70v at home so maybe later today...
  • SIHABSIHAB Posts: 740
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  • SIHABSIHAB Posts: 740
    seems like this is gonna be a project :#
  • agfrostagfrost Posts: 2,251
    Jay
    SDA 2BTL * Musical Fidelity A5cr amp * Marantz DV-9500 * Modded Adcom GDA-600 DAC * Rythmik F8
    Micro Seiki DQ-50 * A hodgepodge of cabling * Belkin PF60
    Preamp rotation: Krell KSL (SCompRacer recapped) * Manley Shrimp * PS Audio 5.0
  • SIHABSIHAB Posts: 740
    edited January 29
    o.k. Powered on but needed a fuse. (this was key :D )
    It is unsurprisingly noisey.

    I plugged in an old TT as the RCA jacks fit.
    No gain. It does make some music when cranked up.
    d9ma3gnp830k.jpg

    After findings some smaller RCA ends, I plugged in
    a tuner. 20 Watts of SS power! (and a lot of noise)
    3q6rauilx50e.jpg
  • mhardy6647mhardy6647 Posts: 21,236
    Grommes made some nice vacuum tube amplifiers -- this little fellow looks like a small sound reinforcement amp of some sort.
  • SIHABSIHAB Posts: 740
    mmm, Ducati. It says 4/59 on it so we can guess turn of the decade.
    hfflqquopy5u.jpg
  • mhardy6647mhardy6647 Posts: 21,236
    edited January 29
    It is not impossible but being all transistor would suggest its a few years newer than that. Transistors really became a big thing in audio in the early 1960s.

    A really good place to look for info on this (although it will require a certain amount of dedication, patience, and brute force are the technical resources (industry catalogs, etc.) at https://www.americanradiohistory.com/

    I will -- ahem -- peruse a wee bit myself :)
  • mhardy6647mhardy6647 Posts: 21,236
    edited January 29
    ummm, errrm, ahh -- they're still around (or at least there is still a website - I didn't see any content newer than 2004, though!); might want to drop 'em a line or give 'em a call.
    http://www.grommesprecision.com/index.htm
  • tonybtonyb Posts: 30,867
    What you have there....is a pretty snazzy looking door stop. :)
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  • mhardy6647mhardy6647 Posts: 21,236
    tonyb wrote: »
    What you have there....is a pretty snazzy looking door stop. :)

    A Mid-Century Modern doorstop, thank you very much.
    With optional cover screen, I might add.

    B)
  • ALL212ALL212 Posts: 1,071
    It's a PA or paging amp. Use caution when hooking up speakers to this as it means 70v! We've got similar in our plant and you can run wire a very very long way and with the proper speakers get a lot of volume.
    Aaron
    Enabler Extraordinaire
  • SIHABSIHAB Posts: 740
    Thanks All. My Altecs can do 70v though I had never tried them that way.
    Paging Amp seems to be the winner! Door stop too!!

    Not surprisingly, at low volumes it sounds like an old transistor radio.
    Give some juice and it sounds o.k.

    No work for the next couple of days so time to tackle some more of these
    little projects. o:)
  • agfrostagfrost Posts: 2,251
    ALL212 wrote: »
    It's a PA or paging amp. Use caution when hooking up speakers to this as it means 70v! We've got similar in our plant and you can run wire a very very long way and with the proper speakers get a lot of volume.

    Makes sense with the mic input. SIHAB, time to put a vintage whole-house comm system in? :p
    Jay
    SDA 2BTL * Musical Fidelity A5cr amp * Marantz DV-9500 * Modded Adcom GDA-600 DAC * Rythmik F8
    Micro Seiki DQ-50 * A hodgepodge of cabling * Belkin PF60
    Preamp rotation: Krell KSL (SCompRacer recapped) * Manley Shrimp * PS Audio 5.0
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