The Organ Forum

Space Truckin'....cool

I have a RT-3. I have been using a 'Line 6' 'Roto-Machine' pedal and running it through a Peavey PA system. The pedal has an overdrive knob, and also immulates a Leslie (for the lack of one here). You can't believe the growl you can produce using this pedal, and it is totally safe to the RT (or B3) because you are not overdriving the organ itself...  works for us.

i hope to have an opportunity someday to try out that pedal, because, as i've said, the boss rt-20 doesn't cut it. i don't think i've ever heard the pedal solo unit on an rt-3, does it sound nice?

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open for advice on bettering my b3, h-112, L-112, R-124, and crappy model 123 hammond organs.

As you can hear the percussion is the same as in C3 - it uses the circuit from AO-28. It is full-tube in contrast to transistored L100 perc - it really "bites".

The keying is different - my hammond uses 7th drawbar instead of 9th used in B3 as in L100, but it really does not affect the sound.

When I finally would install the scanner my mods would be complete.

I tried using B4 II as well, with my SB live card (kx project ASIO drivers). No latency but the sound from my tube amp was far better then from this B4. Of course b4+hamm sounded much better then b4 itself.

The AO-29 is nearly the same as AO-28. Mine was AO-29 as well but I converted it to 28 - removed pedal sustain and amp (3 tubes), changed some capacitors and resistors, 12AU7 tube to 12BH7.

I can hear now that my modded L100 is closer to my C3 then M3 or M100. I must only install the vibrato scanner.

First and second solos in Burn are in a specyfic scale (very popular in rock music, I can't recall it's name...) - C-D-D#-F-G-A-A#. The solo I played begins from D-minor chord without fifth. I hope that it will help you...

Guitar distortion pedals used with Hammond simpy suck. Get a little tube amp like Epiphone Valve Junior and turn it on loud.

Jon

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I hate jazz!

yeah the ao-29 in my b3 is has two empty tube sockets, one of which is used as a hole through which the output comes derives, with three wires coming out, and it looks like they are grounded to the chassis with a resistor the same way g-g outputs would be(i think) but it still uses the large tube of ao-29 specs. the output of the amp goes to the front of the front in a box with some resistors and what was probably supposed to be a volume pot, but it was broken off, perhaps to keep the volume nob from being nudged. did you also change the large transformer? or is that transformer the same on both amps? the large transformer not being at an angle was how i first identified something was really wrong. and come to think of it, pedal sustain was removed on there too....if i can get the local hammond tech to confirm that those outputs are equivelent to g-g outputs, i might be able to use that overdrive cicuit with zener diodes over at hammondwiki. speaking of making mods to an amp, would it be possible for me to change my m2 amp to a percussionless equivelent of an ao-28, that way i could install that zener diode overdrive on there first to test it, and have that as a more portable alternative to my b3, especially when i chop it(i know, chopping doesn't remove much weight, but it's at least worth getting it in a black tolex covered road-worthy case with road handles, isn't it? i will eventually need something to toat arround)

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open for advice on bettering my b3, h-112, L-112, R-124, and crappy model 123 hammond organs.

I swapped the transformer with the one from L100 amp (it has the same dimensions) - I purchased my AO-29 in USA and we have different voltage here in europe so this was the simplest way to accomodate it. You do not need to change that transformer - in fact it gives almost the same voltages in both amps.

If you don't use balanced-input amps or leslies you don't need balanced G-G.

I have not tested Kon's overdrive circuit.

Jon 

 

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I hate jazz!

kon's overdrive circuit is why i need balanced g-g. i don't know if it would work correctly with non-balanced signal, and i haven't been able to find anyone who's used it.

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open for advice on bettering my b3, h-112, L-112, R-124, and crappy model 123 hammond organs.

I do.

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Home: Hammond T-212, Rhodes Mk1 Suitcase 88, Moog Micromoog

Away: Allen 301, Hammond E-311 + RT-2, Mason And Hamlin 802, Yamaha E-70 + DX21, Korg DW-6000, WurliTzer

Gone: Baldwin 4, Allen Theatre DLX, Hammond J-412, Yamaha Motif 6, Roland D-50

Clavier:

I do.

do you have any recordings demonstrating it? and does anybody know, would it work with a spinet without balanced output?

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open for advice on bettering my b3, h-112, L-112, R-124, and crappy model 123 hammond organs.

I modified the Kon's overdrive to use with single ended organs. 

 Jon

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I hate jazz!

jon you are my hero. this could essentially be the most simple tube distortion emulation circuit i've ever seen. i wish i was competent enough with a soldering iron, i would build the cheapest transistor amp i possibly could, with this circuit, and it would still have a chance of sounding awesome. i think i'll wait until i can see actual picures of the functioning circuit before i try this though, because there are little bits about this schematic i don't understand. there are things in there without labels. the output is labeled "to leslie or pr-40 etc", is it possible to just put it to line level output so it could be run into a mixing board or another amp?

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open for advice on bettering my b3, h-112, L-112, R-124, and crappy model 123 hammond organs.

Thanks

Maybe I would try it some day.

The outputs can be run to mixing board or another amp.

REMEMBER THAT HAMMOND, EVEN WITH THE BEST DISTORTION UNIT, WON'T SOUND GOOD WHILE CONNECTED TO TRANSISTOR AMP!

I'm looking forward for any further questions.

Jon 

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I hate jazz!

on the contrary, i have my b3 running to a P.A. amplifier that powers my souped up leslie speaker, it give me quite good control. though, once i get my 147 amp up and running, i'll probably use that with this circuit to get overdrive before a tube amp to preserve the tubes

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open for advice on bettering my b3, h-112, L-112, R-124, and crappy model 123 hammond organs.

bump

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open for advice on bettering my b3, h-112, L-112, R-124, and crappy model 123 hammond organs.

overdrive do not destroy tubes

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I hate jazz!