The Nord C1, C2 and C2D Organ Forum

C2D through Leslie 145 - 'Stop' mode functionality help

Postby CamboC2D » 24 Aug 2013, 01:42

Hi folks.
I'm a new member, playing Hammond and pedals for 35 years. Professionally for 20 and just bought the C2D for portability over my chopped A100.

I love the Nord, and have compared note for note, and tone. It's 99% identical, so I'm over the moon!

Anyway:
My C2D connected via TrekII 1147 connector kit to 145.
Has anyone successfully managed to get BRAKE functionality, not just Fast / Slow?

Yes, the Simulator is Off, and the speed controls do control the 145 as same with XK Hammonds.

My A100 with TrekII 3 way speed rocker works fine with the 145 directly ( fast/Stop/slow).

Do I need the electronic relay kit installed into the 145- http://bborgan.com/catalog/product/view ... tegory/10/

Any experiences with 11 pin to 6 pin leslie connections to enable 3 speed functionality welcomed! I know the 3300 and 830 work fine being solid state.

Cheers, and glad to a newb on this forum which I have been reading for quite a while :)
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C2D through Leslie 145 - 'Stop' mode functionality help


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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby CamboC2D » 24 Aug 2013, 13:08

I received an email reply from TrekII regarding the 1147 connector kit which makes sense now.

I remember my Tech telling me he had modified my 145 to have Brake function via 3 way rocker switch on my A100....

"Lets start at the beginning. The 145 was born to operate fast / slow. If it operates fast / slow AND OFF, it has been modified
(likely with an EIS-147 relay)
http://www.trekii.com/EIS122.html

Since standard 145s are only fast / slow, that is the only function the 1147 kit is designed to provide. In fact the 1147 kit never
looks at the "fast" control line from the 11 pin source. It only looks at the slow control line. It the 11 pin's slow control line
is active, the kit tells the 145 to go slow. If the slow line is not active, the kit tells the Leslie to go fast.

Looking at the circuitry for the 1147 kit, it would appear that it should be possible to modify the kit to provide fast / slow /
stop information to an EIS equipped 145. However, this modification would require the addition of a relay, driver transistor and
some support circuitry. Since I don't have an actual 1147 kit to look at, it is difficult to know if there is sufficient room
inside the kit to add the necessary parts. The fact that you are located on the other side of the planet only adds to the
challenge. (If you were local, you could drop off the organ, kit, and Leslie.... and we could evaluate all aspects of the proposed
modification as well as test the results.)"
- Michael Smokowicz
TrekII

So I'll be talking with my Tech'o regarding this and shall let you all know how it goes.
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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby CamboC2D » 30 Jan 2014, 22:52

Trek II 1147 11-6 pin adaptor.

For the 'Brake' function to work, (aka 3 speed) the Leslie 145/147 electromechanical relay must be replaced with the Trek II EIS-147 relay. (This has been previously done in mine for my custom A100 chop rig)

Michael from Trek II has provided my tech with details of the EIS-147 relay so that the 1147 adaptor can be modified to 'see' the 3 way switch signal from the 11pin input.

The 1147 adaptor was never designed to fulfil 3 way switching, so this is a first, and should be valuable for anyone wishing to use a vintage tube Leslie with ANY 11 pin clonewheel.
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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby Groovecake » 30 Jan 2014, 23:29

You could do what I do and just unplug the slow rotors! :)
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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby CamboC2D » 31 Jan 2014, 06:36

I use slow, fast And brake lol. I've actually done that before using two 122 's with a B3
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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby C2dPedro » 07 Apr 2020, 09:57

Hi Everyone
Pete here. I own 2 C2D's. 1 for home studio and 1 for gigs. I feel like I have found the perfect organ for the rest of my days. Anyway... This is my first post. My question is what brought me to this forum in the first place. I am also experiencing the inability to use the stop mode when connected to my Leslie 44w which has been modified to 2 speeds. I to am using the 1147 adapter box to go from 11pin to the 44w 6 pin input.

Has anyone had any success in modifying the 1147 or anything else for that matter to solve this dilemma?

When i initiate the stop/fast mode it just goes straight to fast. Aside from that, the sound of the C2D with a vintage Leslie has been life changing.... I feel like I'm so close to complete perfection!

Thanks for letting me join in...looking forward to any insight.

Pete
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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby C2dPedro » 08 Apr 2020, 08:08

Along with that last request. I would greatly appreciate hearing from any of you who are playing the C2D with a tube-amped Leslie of any kind with stable slow/fast and STOP functionality to share with me what your using. Leslie type, any connector kits or modifications that got you to your happy place.

I will soon be on the hunt for another pre 3300 tube Leslie for my 2nd C2D and your positive set-up experiences will go a long way in helping me assemble my next vintage rig.
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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby LeftyBass68 » 09 Apr 2020, 04:53

I have no problem adding an on/off to 'coast' switch to the Leslie 147 five pin brake plug accessory 'loop' wire.Mine is separate from the C2D controls,I use a traditional halfmoon.
See that wire on top of the 147 amp 5 pin brake plug going from one pin to another? Pull out the plug and the motors stop?
All the 117V AC is away from my halfmoon switch via an 18V power supply,and a relay.It's all safe,Michael S is a friend and helped me from a distance.
Got the 18V/117V interface schemo from another forum....
That 147/44/45 socket was meant to house a tube relay 115V coil for the brake function,which is different from coast in that;
it provides a burst of reverse motor direction to drag down the lower rotor speed quickly.
Coast ,which the interruption of this wire will accomplish, will of course eventually stop both rotors.Some people didn't like the slow ramp down time of the lower rotor and braked them.
I prefer coast to chorale on the lower rotor for sure....or just unplug the lower chorale motor?
I have chorale,coast/stop,and tremelo.No brakes....
NS3C NS2EX88 C2D Yamaha MOX8 Behringer Model D (5) Behringer Neutron (5) Roland Lucina AX9 12 Hammonds/Leslies.(BV/BCV/B2/3 A100's/M3/M102 etc.

The author LeftyBass68 was thanked by 2 members, including:
be lee vitC2dPedro
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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby C2dPedro » 09 Apr 2020, 08:48

Thanks
I think that's how I'm going to go. I'm wiring up a single foot switch now that will simply interrupt the power from the the slow speed plug . Seems very non-invasive and I don't mind coasting a bit before the stop. In fact i like the subtle transition .
I was hoping to avoid another cable coming from the 44W, but after playing all day with the slow speed un-plugged ....its worth the foot switch. That straight tone a such a vital characteristic!!
No Brakes indeed!!!
Really appreciate the feedback! cheers! and stay healthy!!
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Re: C2D through Leslie 145 - 'Stop' mode functionality help

Postby elseif » 11 Apr 2020, 18:52

I run a C2D into a 122 Leslie and use a pedal with a momentary foot switch for control. A tap on the switch toggles speeds between fast/slow and holding it for 1 second selects stop. The pedal accepts the C2D for input and sends the balanced audio and DC relay control to the Leslie via an XLR cable. In addition to the foot switch, it can be controlled using a 3-conductor hand switch, though I don't use one.

At the Leslie end, there is an adapter box that connects to the Leslie via an Amphenol 6-pin locking EP connector (I dislike the Leslie 6-pin connectors). The adapter provides switched AC power and the organ signal to the Leslie.

One reason I made this was because I wanted to be able to use a standard microphone cable to connect the organ end to the Leslie end rather than an expensive Leslie cable. I also wanted to run the pedal from 9 VDC so I modified the relay in the Leslie to switch with a control voltage that varies from 0 to 9 VDC. If I were making it for general use, I would use a DC-DC converter to boost the 9V to 34 VDC, which would be enough to switch an EIS-122 equipped Leslie. I expect it would be okay with mechanical relay Leslies but I don't have one to try.

Image
Last edited by elseif on 11 Apr 2020, 18:53, edited 1 time in total.
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