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Speakeasy Vintage Pre-adding a 122 out?

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  • Speakeasy Vintage Pre-adding a 122 out?

    Hi All,

    New member here. Also new owner of A C3/21h combo that I'm beginning to learn much about here. I look forward to being part of the community and appreciate all the great info that you share.

    I've just dug out of the closet a Speakeasy pre that was originally purchased 20 years ago for a clone through a Motion Sound amp, so it has no Leslie output installed. There is a hole cut for one though. Does anyone have or know where I could get info, wiring diagrams or pictures of the hookup for a 122 out?

    Thanks - Daniel

  • #2
    Greetings Daniel,welcome aboard.

    If there is already a cutout for a Leslie connector on the pedal you are in luck!
    122/22/21H and other H type Leslies are balanced output.This requires a small transformer,a capacitor,and a resistor.
    So your next step is to determine exactly what is available for room inside the stompbox and build it with readily available off the shelf components.
    Many of us forgo the stompbox and have a built in 'interface' and motor control switches,usually halfmoons.
    Adding these parts to your C preamp is easy.
    The Hammond Wiki and many other websites show this circuit,and two resources I'll steer you to are Captain Foldback and Fish Organs.
    The first of these two has the schematics and mechanicals for your gear and the latter has a page with almost every Leslie interface ever made.

    If this is too much trouble you can always pay retail at one of the many fine vendors on this board and elsewhere!
    And pay a tech to hook it up.Or learn to do it without harming yourself or the gear.
    Heck,I did all this years before there was an internet. That gear of yours will sound great!
    A100/251 A100/147 A102/222 B2/142 BV/147 BCV/145 M3/145 M102/145 M111/770 L101/760 T222/HL722 M111/770 no B3/C3!

    Comment


    • #3
      Thanks, Pete! Yes, the cutout is there already, and I suspect that the components are in the box already. There are two transformers in there. Looking back on my original post it seems I neglected to mention that I want to use the preamp for guitars and other goodies through the Leslie. The organ does have an interface and half-moon . Sorry about that. Thank you for the links. I do want to learn to work on these beasts without damaging myself or them. It'll take a moment!

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      • #4
        I don't think the half-moon and interface will serve any purpose using the Speakeasy VTP, as it does all those things.

        I recently opened up one and took a bunch of pics hoping we could 'reverse engineer' this box. I don't know if there are legal implications to this sort of activity, or if it could actually be done. I can send you a couple of them showing how the amphenol connection goes if you like. This VTP box used a 'military' sort of plug, which required a small pigtail to convert that to the 6 pin 122 amphenol.

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        • #5
          Speakeasy sold this preamp both as a foot pedal, and as a rack mount unit. Which do you have?

          I have installed a 6 pin amphenol out on a rack mount unit which did not have one. The only hard part was cutting the hole, and if you already have that hole, one less task to have to do. You can find the schematics online still.

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          • #6
            After Steve's death in 2012, his wife made some of the documentation available on the speakeasy web site. It appears that the speakeasy domain has since expired, but I downloaded the VTP doc last year. Hit me off list and I'll email it to you.

            Jim

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            • #7
              Originally posted by Jaim View Post
              After Steve's death in 2012, his wife made some of the documentation available on the speakeasy web site. It appears that the speakeasy domain has since expired, but I downloaded the VTP doc last year. Hit me off list and I'll email it to you.

              Jim
              Jaim,
              would you happen to have the drawing/schematic for the"Mo' Bass" unit that Steve designed?

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              • #8
                would you happen to have the drawing/schematic for the"Mo' Bass" unit that Steve designed?
                Yes - send me your email add in a PM.
                Jim

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                • #9
                  Hey, thanks all! I thought this thread was dead. I've got the floor model with a cutout. I couldn't find the schematics. I'll PM

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                  • #10
                    Originally posted by dweisskeys View Post
                    Hey, thanks all! I thought this thread was dead. I've got the floor model with a cutout. I couldn't find the schematics. I'll PM
                    I found it :

                    Click image for larger version

Name:	MoBass.jpg
Views:	1
Size:	95.0 KB
ID:	603982

                    JP

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                    • #11
                      Thanks, but that was Hammon who was asking for this.



                      Originally posted by Jyvoipabo View Post
                      I found it :

                      [ATTACH=CONFIG]29091[/ATTACH]

                      JP

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                      • #12
                        Hi there- I was just researching Leslie preamps and came upon this thread. I now own a Leslie 122 and need a preamp for it- and I also own a speakeasy preamp 'motion sound classic' with the cutout on the right side- (I guess for a Leslie connection?). It would be great to convert this into a usable preamp for the Leslie- did you have any luck figuring out how to do this? Thanks, Matt

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                        • #13
                          Things got a little hectic the past month and I haven't gotten to it yet, but I will soon. I believe everything you need is here in this thread.

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                          • #14
                            I've tried the TrekII Leslie Preamp and it's good.Never tried the Speakeasy.Played some home made and Ebay store 'kits' too.

                            If I was looking for a 122 preamp I would look for a PortaB(L100) chassis that already has the kit,and will run a verb spring!
                            For that matter,it would be possible to install a 122 kit on an AO43(L100) chassis.
                            Now your tone is a 12AX7 tube mainly,and a 12BH7 (verb)....and it sounds great on my 142!
                            Clone organs and the AO43? Is one of the best ways I have found to tame the top octave of 'clone syndrome'.
                            The best I have found? AO28 (B3/C3...) of course.
                            Leslies like Hammond amps at the inputs!

                            Kudos to those third party units that offer an alternative,however,they don't sound exactly like the Hammond/Leslie tube combo.
                            While I'm weighing in personal opinions,I use the Leslie brand CPP's for motor and amp testing when needed.....and to hold open a door.
                            I think they sound awful! Even rebuilt.....
                            The AO43 on later PortaB fed solid state Leslie 760 types (9 pin) and the original older ones fed Hammond Tone Cabs and/or 122.

                            AND....the AO43 will supply B+ to older consoles preamps no problem! Not too sure about the L100 organ for blues or soul but they can rock!
                            They are fine but not an M3/A100/B3 etc.....IMO.Best part to salvage and use? The amp chassis hands down! Your 122 will love it!

                            I use Boss FS6 switches or a halfmoon off my AO43.No big clumsy footprints at my feet when I perform.
                            Oh,and one more thing.....the AO43 fits perfect in a 19" red tool box......which is so easy to plumb it's stupid!
                            A100/251 A100/147 A102/222 B2/142 BV/147 BCV/145 M3/145 M102/145 M111/770 L101/760 T222/HL722 M111/770 no B3/C3!

                            Comment


                            • #15
                              C3-122? I'd just use a 6122 kit. Throw the switch box away and use a half-moon switch, or put a switch in the cheek block.

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