Grommes Precision Model g-23

SIHAB
SIHAB Posts: 4,958
in Electronics
what do I have here? :*
@mhardy6647
Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • SIHAB
    SIHAB Posts: 4,958
    qaak43nfov3p.jpg
    odzc4ocua9w1.jpg
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • SIHAB
    SIHAB Posts: 4,958
    z2ksjblmad7h.jpg
    ad1m31gpsft6.jpg
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • SIHAB
    SIHAB Posts: 4,958
    passes smoke test. :#
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • SIHAB
    SIHAB Posts: 4,958
    I have a speaker that can do 70v at home so maybe later today...
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • SIHAB
    SIHAB Posts: 4,958
    2yekk1o6rm8k.jpg
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • SIHAB
    SIHAB Posts: 4,958
    seems like this is gonna be a project :#
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • agfrost
    agfrost Posts: 2,430
    Not much out there.

    https://www.facebook.com/OhmNAcoustics/photos/grommes-precision-g23-power-amp-classic-micinstrumentcomponent-amplifier-built-i/1153001178115970/

    Can get "something" shipped to you for 10 simoleons. A brochure, which I'd assume has *some* useful info... http://www.stereomanuals.com/man/rep/grommes/index.htm
    Jay
    SDA 2BTL * Musical Fidelity A5cr amp * Oppo BDP-93 * Modded Adcom GDA-600 DAC * Rythmik F8 (x2)
    Micro Seiki DQ-50 * Hagerman Cornet 2 Phono * A hodgepodge of cabling * Belkin PF60
    Preamp rotation: Krell KSL (SCompRacer recapped) * Manley Shrimp * PS Audio 5.0
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  • SIHAB
    SIHAB Posts: 4,958
    edited January 2019
    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
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • mhardy6647
    mhardy6647 Posts: 33,895
    Grommes made some nice vacuum tube amplifiers -- this little fellow looks like a small sound reinforcement amp of some sort.
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  • SIHAB
    SIHAB Posts: 4,958
    mmm, Ducati. It says 4/59 on it so we can guess turn of the decade.
    hfflqquopy5u.jpg
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • mhardy6647
    mhardy6647 Posts: 33,895
    edited January 2019
    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 :)
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  • mhardy6647
    mhardy6647 Posts: 33,895
    edited January 2019
    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
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  • tonyb
    tonyb Posts: 32,981
    What you have there....is a pretty snazzy looking door stop. :)
    HT SYSTEM-
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    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
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  • mhardy6647
    mhardy6647 Posts: 33,895
    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)
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  • ALL212
    ALL212 Posts: 1,577
    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
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  • SIHAB
    SIHAB Posts: 4,958
    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:)
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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  • agfrost
    agfrost Posts: 2,430
    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 * Oppo BDP-93 * Modded Adcom GDA-600 DAC * Rythmik F8 (x2)
    Micro Seiki DQ-50 * Hagerman Cornet 2 Phono * A hodgepodge of cabling * Belkin PF60
    Preamp rotation: Krell KSL (SCompRacer recapped) * Manley Shrimp * PS Audio 5.0
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