The most basic setup needs i) A six pin amphenol plug, ii) a fuse holder with 5A fuse, iii) an electronics craft field or similar property and iv) a single pole – single throw change of your preference able to handle range AC voltages. Understand that the 1 through 6 pin-out about socket could be the reverse of that seen above. In order to avoid confusion number pins 1 through 6 as above while viewing the socket through the rear (for which you solder the cable from the organ).
Hooking a Leslie 147 to a console
Typically, you need to push the Leslie input away from one of many G-G Outputs and (AO-28 chassis) soil. Apparently, you’ll be able to drive the Leslie both G-G outputs to get more drive. (in either case, ensure that you place the Leslie load resistor change from inside the off situation.)
Keep in mind that in an intact A-100, you’ll catch the Leslie to either the G-G output(s), or even to the speaker amount outputs from the AO-39. Be mindful that there’s a high-cut filter in the AO-39, so that the indication for the Leslie will tend to feel bass-heavy if provided from the amplifier output.
For information on how to wire a primary Ensemble Echo switch to change between a Hammond build closet (or 122-type Leslie) and and 147-type Leslie, discover important Echo flipping For A100 With Leslie 147 .
This writeup was graciously offered by Harvey Olsen :
Electro musical (and soon after CBS) didn’t offer manufacturer kits for connecting alleged “universal” or general-purpose Leslies to Hammond unit body organs without inner presenter systems. This was done to shield Hammond sellers just who, at that time were accountable for the majority of Leslie’s purchases. Any tunes provider could promote 147s alongside general-purpose Leslies, but best Hammond dealers ended up selling Hammond-type Leslies just like the 21H, 22H, and 122. But the 147 hookup is relatively simple and easy requires only little technical knowledge.
This hook-up is supposed for Hammond tonewheel units with
- Well-balanced (a.k.a. push-pull or G-G) outputs
- A self-powered preamp (with an electrical transformer and 6X5 or 6X4 rectifier tubing)
- No built-in power amplifier and speakers
Excluding the ?D-100 series (in fact it is really a product ?RT-3 with all the ingredients from a PR-40 build closet set up in body organ), Hammond gaming console areas with built-in energy amplifiers just like the A-100 collection can push 147-type Leslies straight from the presenter outputs. In this instance, one of the standard Leslie connector systems can be used and a custom hookup isn’t needed.
Integrated Hammond designs is: B2, B3, C2, C3, D-100 Series, RT-2, and RT-3. Early Hammond designs like the A, BC, CV, D, RT, etc. are not self-powered and require DC (B+) from a Hammond build drawer or Hammond-type Leslie to drive the preamp. “Non-Hammond” Leslies do not have provision to supply this energy but may be applied with early units if another DC source was provided.
Included Leslie models are: 31W, 44W, 45, 46W, 47, 47R, 145, 145A, 147, 147V, 147RV, 245, 247, 247RV, 147A, and 147A-T. (items 25, 125, and 225 with energy amps tend to be electrically suitable but do not bring rotary treble horns and they are not recommended for gaming console organs.)
NOTICE: usually do not rewire the body organ’s stock 5-pin build case socket for 147-type Leslies or utilize a 5-to-6 pin Hammond cable for this reason! Doing so could cause a serious electrical threat. Universal-type Leslies need an independent 6-pin outlet, that should become labeled “147” or comparable. Caution customers not to ever utilize this plug for Hammond build cupboards or Hammond-type Leslies. When the organ can also be equipped with an 8000 or similar Hammond-type connector equipment, make certain that the indication feed are kept split from the 147 hookup. 147-type Leslie models haven’t any supply to isolate the DC control voltage utilized in Hammond-type hookups.
For short-term need, it’s possible to get rid of the six-pin connect from a six conductor Leslie cable and come up with listed here connections right to the organ’s preamp. But this sort of hook-up shouldn’t be useful lightweight or permanent incorporate. Installing the device should be neater and safer in the event that six-pin plug is actually set up from inside the organ’s outlet package.
Put the weight turn inside Leslie energy amp with the “open” place. This completes the hook-up. If a 122-type “half-moon” turn can be used, it will probably function backwards with 147-type Leslies. To fix the situation, simply rewire the switch with the previously untouched set of terminals. (exactly the same switches were used for 122 and 147 kind kits and have two sets of associates.)
If a Hammond build closet or second Leslie falls under the installation, they have to be “in level.” Two body organ speakers close along could have a noticeably uneven pedal response if the bass speakers become of phase. Should this occur, push the signal connection from pin 6 to another “G” terminal.
147-type Leslies are typically put into established Hammond-Leslie set up with a few safety measures. You will find a good amount of sign offered nevertheless unit’s AC wires can offer electricity just for two tone cupboards. If a 3rd speaker is employed, an electrical exchange should really be used to reduce steadily the electric load regarding organ. In addition, living for the body organ’s “run” change are extended if latest burden are lower.
Universal-type Leslies must be linked directly the organ preamp. If the body organ features echo and other alert changing, these must be bypassed. Hammond units are normally made use of only with outside cabinets with well-balanced inputs. You can create a switching program both for balanced and unbalanced inputs nevertheless the routine is far more complex and beyond the range with this job.