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What should I get as replacement speaker for internal Leslie ?

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  • What should I get as replacement speaker for internal Leslie ?

    I just noticed that sometime over the last 40 years a mouse seems to have lunched on the speaker cone of the Leslie in my recently acquired T 524. About a quarter size hole; the speaker seems to sound normal but I thought I would replace it for good measure. Anyone know of a speaker brand/model that will physically fit and also have the right specs ?

  • #2
    Install a full-range 40w speaker for superior results compared to the weak stock speaker..... get something with a dual-concentric tweeter for better key click and tonewheel leakage.
    The amp is about 25w, you'll want plenty of headroom in the new speaker so you can crank it without fear
    Current:
    1971 T-202 with Carsten Meyer mods: Remove key click filters, single-trigger percussion, UM 16' drawbar volume correction. Lower Manual bass foldback.
    Korg CX3 (original 1980's analogue model).
    1967 Leslie 122 with custom inbuilt preamp on back panel for 1/4" line-level inputs, bass & treble controls. Horn diffusers intact.
    2009 Marshall 2061x HW Plexi head into Marshall 4x12 cabinet.

    Former:
    1964 C3
    196x M-102
    197x X5
    197x Leslie 825

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    • #3
      Thanks for the info...but I dont want to remove the original until I have the replacement in hand , so I have to ask how many inches in dia is the speaker ? And how many OHMS ?
      Last edited by Two Finger Tony; 08-18-2019, 10:44 PM.

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      • #4
        The speaker size in the leslie unit is 8". The T series has a 34 watt amp, so go for something that will handle 50 watts. 'Full range' makes good sense, but as it's not handling any bass, don't worry too much about its performance at the low end. If you're not into all the mods that make the T series sound more like an M100, and prefer the smoother sound that it offers for 'home organ' music (which is what it was designed to do) then you don't really need a dual cone unit.

        As for impedance, it's not shown on my T500 schematics, or in the parts list, but a search through previous posts on the subject suggests that it's 8 ohms. You can check it yourself with a multi meter, of course. It will only show you the DC resistance but it will be close enough to tell you whether it's 8 or 16.
        It's not what you play. It's not how you play. It's the fact that you're playing that counts.

        New website now live - www.andrew-gilbert.com

        Current instruments: Roland Atelier AT900 Platinum Edition, Yamaha Genos, Yamaha PSR-S970, Kawai K1m
        Retired Organs: Lots! Kawai SR6 x 2, Hammond L122, T402, T500 x 2, X5. Conn Martinique and 652. Gulbransen 2102 Pacemaker. Kimball Temptation.
        Retired Leslies, 147, 145 x 2, 760 x 2, 710, 415 x 2.
        Retired synths: Korg 700, Roland SH1000, Jen Superstringer, Kawai S100F, Kawai S100P, Kawai K1

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        • Papus
          Papus commented
          Editing a comment
          Ah, 34 watts - I didn't know that.
          I guessed 25 watts based on comparison to the volume level of other known amps in my arsenal.
          From memory there's a rear baffle with a cutout for the magnet - this might be a problem fitting newer speakers with larger magnets and/or deeper baskets

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