[HAM] EX Motion Sound Gas Pedal
John Turck
I just bought a Motion Sound Pro week ago. You have the Motion Sound
ProT, right? I believe that has a jack for a "gas pedal". It's my
understanding that any type of volume pedal will work. Does that make
sense? Perhaps you know a guitar player who has a volume pedal you
could try?
PS-
I am new to this list. How do I ask a question to the group?
Hope this helps.....
John T
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Dan ''Spiffy'' Neuman
grounds the tip and/or ring to activate fast or stop. Most volume pedals
have two mono jacks instead of one stereo at any rate.
I'm not sure how the Gas Pedal works but perhaps it offeres a varied
resistence to ground?
At any rate, I'm sure if you call up motion sound they'll provide you with
a schematic, and possibly the information of where to find the pedal
itself.
Good Luck!
DAN!
joe
But thanks for the schematic idea; maybe I could kludge up a
volume pedal if I had the proper schematic. I was able to rewire
a vintage Leslie switch to control the Pro3T.
Dan ''Spiffy'' Neuman wrote in message <38A21142...@mailbag.com>...
Dan ''Spiffy'' Neuman
joe wrote:
> They had no idea where I could find one, except to "call around."
>
> But thanks for the schematic idea; maybe I could kludge up a
> volume pedal if I had the proper schematic. I was able to rewire
> a vintage Leslie switch to control the Pro3T.
Why when it comes with that handy box?
Good Luck!!!
DAN!
joe
which ruins my recordings. The Leslie switch is much better, (and
looks nice on my A-100) but I'd really like to have continuously
adjustable speed control.
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Dan ''Spiffy'' Neuman wrote in message <38A48A1B...@mailbag.com>...
Dan ''Spiffy'' Neuman
someone out there suggested using momentary switches, which can be a problem
if you leave it in one posisition for any lenth of time, but is a good idea .
. they do make quieter push on/off switches, and you can even get them at
radio shack.
But this isnt getting you a Gas Pedal. try talking to motion sound for the
schematics, they are great helpful people there. Once you know what the gas
pedal does electronically, there are people here who can help you accomplsih
that with whatever type of switch you chose to use!
GOOD LUCK!
DAN!
joe wrote:
John Turck
I have a Motion Sound Pro 3 (Not Pro3T). I also have a Hammond M3
organ, both of which I just purchased last week.
I found a schematic in a Hammond Organ guide book that consisted of
attaching 2 wires to the green and black wires running out of the tube
amp into the speaker.
These 2 wires then continue on from th speaker and attach to a few
electronic parts such as capacitors and a #44 light bulb, ....then on
to a 1/4inch output jack.
I ran my M3 into my Pro3 this way, and I think I fried the horn....it
sounds raspy, breathy and brittle all the time......Is this possible?
Do I need a stronger horn? Am I running too hot an output out of my M3?
Any help is appreciated,.....
Thanks-
John T
joe
a bit simpler. The connection from the preamp to the power amp
is fairly normal line level, except it's differential. I built a little box
which taps one side of the differential signal for the Pro3T. The
other side is just "discarded." If I disconnect the plug for the Pro3T,
the signal continues on to the A100 power amp. It's a little quieter,
but hey, I never lacked for volume in my small living room. Plus, I
don't think I'll often want to disconnect my Pro3T.
If you've blown the driver, I'm sure you can get a replacement from
Motion Sound. Just to be sure though, you do know you have 2
volume controls on the Pro3T? The left hand one is pre-tube, and
the right hand one is post-tube. If you turn down the left hand
control most of the way, and crank the right hand one a little, do
you still get distortion?
I know that if I overdo the left hand knob, I can get way more distortion
than I'd like. Because it goes all the way to zero, it should be able to
accomodate very large signals if you turn it down. Also, I don't think
the output of the speaker amp is all that huge. I measured it at about
2 V rms with a loud sound.
When you played, did you hear the bad sound from the get-go, or did
it develop over time? Also, did you immediately get a giant blast of
sound, then badness, or was the volume reasonable, but bad anyway?
The reason I ask, is that these questions will help you distinguish
between tube distortion and actual speaker damage.
Good luck.
PS - I wrote Motion Sound requesting schematics or info, but no reply.
I'll have to jerry rig something up and see what happens. I'm an EE,
so I'm not overly worried about the electrical design, it's just nice not
to have to design in the dark.
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John Turck wrote in message
<18203-38AA...@storefull-143.iap.bryant.webtv.net>...
John Turck
Another part of the story worth mentioning is that my Motion Sound was
damaged in shipping. It took a hit during it's travels that was a hard
enough hit to crack the wooden shell.
I wonder if it is possible that something in the circuitry was
damaged......or maybe the shock of the hit knocked something loose so
that the distortion is "on" even when the nob is at zero? I am going to
have it checked out......insurance from UPS is paying........and either
way, probably have the horn replaced with a louder one......
Oh yeah....one more thing for all of the techs out there.......I have
had the fortune of obtaining a pre-made chop cabinet for my M3. I guess
I'll be "transplanting" the innards of the organ........Is this easy to
do at all? I have a basic knowledge of soldering technique and
beginners level electronics understanding.
Thanks!