Motion Sound Pro-3X - 45W Rotary Horn Speaker

Amplified Rotary Speaker with Variable Mode FET Preamp and Built-in Microphone
Motion Sound Pro-3X - 45W Rotary Horn Speaker image 1
Motion Sound Pro-3X - 45W Rotary Horn Speaker image 1
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Motion Sound Pro-3X - 45W Rotary Horn Speaker
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Get Your ROTOR Running!

Whether you grew up with the sounds of the Hammond console organ, or you just appreciate the organic drive and vibe of the Leslie tone cabinet, you'll love the Pro-3X! The PRO-3X is an amplified, real rotary horn speaker used in conjunction with a keyboard amplifier (or optional Low Pro rotary speaker) to provide dual rotor Leslie simulation. It's the real deal, without the cost and weight of the original!

The PRO-3X adds real rotary horn sound to your existing keyboard amplification. It features a proprietary Class A, AB, B variable-mode FET pre-amp providing crystal clear sound and an adjustable palette of overdrive harmonics. The Pro-3X adds many new features and improved sound quality to the long running Pro-3 & Pro-3T series of products.

Motion Sound Pro-3X Rotary Horn Amplifier Features:
  • Proprietary Class A, AB, B variable mode FET preamp providing crystal clear sound and an adjustable palette of overdrive harmonics
  • Removable cord LED footswitch
  • Treble and Middle EQ
  • Improved adjustable mono low rotor simulator with high and low frequency band controls
  • Low rotor led speed indicator
  • 1/4" low simulator output
  • Built in microphone on horn
  • Horn microphone and low rotor mixer to 1/4" output for PA use or support amplification
  • Black V horn with semi diffuser
  • 45 watts >800Hz to horn
  • 6.5"H 20"W 16.5"D
  • 27lbs.

Additional Media

Keyboard Amp Buying Guide

Tech Specs

Total Power 45W
Inputs 1 x 1/4"
Outputs 1 x 1/4"
Enclosure Material MDF
Mounting Options Floor
Height 6.5"
Width 20"
Depth 16.5"
Weight 27 lbs.
Manufacturer Part Number PRO-3X

Customer Reviews

Based on 14 reviews
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Definitely awesome

Unfortunately this is my first leslie, so it might not mean much for comparison.. But damn, it's an AMAZING, light, low priced rotary, sounds incredibly awesome with a reasonable quality bass speaker. I use it with a Tokai (Ventura) TX5 brazilian clone, and a cheap guitar amp simulator stomp unit behringer GDI-21 to try to sound Jon Lordish, and pretty satisfied with it. Recommended to buy!
Music background: Hobbyist

Good sound

I have had 4 leslies in my 45yre of playing and the pro 3x sounds just as good. Use a good low simulater amp and you will be satisfide
Music background: keyboard player

Move air, not bits

First, I should say I've never played thru any kind of Leslie or "spinning speaker thingie" before. Up to now, it's been all sims. So I can't say this is just like a real Leslie, better than this model or not as good as that one. But for those of you wondering, it *is* better to move air than to move bits. I played it with my band for the first time last Saturday, and they really dug it, including the guy we were trying out on guitar (who we've asked to join us based on his performance that day). It was really cool, and even the recordings picked up the effect bouncing around the room (I record every jam with a stereo pair so we can listen back to what we did as well as find undiscovered gems instead of losing them to the ether). The Pro-3X was enough to fill our small "studio" room against the drummer, bass, and guitar player. The way my amp is set up, the Pro-3X is about at ear level when I'm sitting down. My right ear gets the brunt of it, which I do have to be careful about. It can be piercing! Providing the organ tone was my Roland VK-7. What was nice was that when you Bypass the rotary sim built-in the VK-7, you also bypass the amp model in the VK-7 as well (this only works if the amp model is Type I or Type II). This allows you to use the V-FET circuit in the Pro-3X to provide the overdrive. Combined with an expression pedal plugged into the VK-7, I was able to nicely control volume that went into overdrive as I pushed into the full range of the pedal and get some nice biting organ tones when I needed them. So far, so good. I am very happy with it. I should mention that I did have a weird glitch setting it up and moving it around shortly after it arrived. I had set it up in one location, and decided to move it to another. When I did that, I plugged the cable for the low end into Mix instead of Sim accidentally. For those that don't know, Sim gives just the low end rotor sim, while Mix gives you a controllable mix of low end and the miced real upper rotor. This can be used to send the complete signal to a PA or house mix, for example. So I moved the plug from Mix to Sim, and got nothing out of it, no static, not intermittent, nothing except hum. I played around with it, switching the plug back and forth between the two jacks, trying another cable (the cable I was using was brand new), running the output through my mixer instead of directly to one of my amp channels, etc. Suddenly, plugging back into Sim, it worked. A bit more playing with it and it came and went, but then it worked and has continued to work since. At this point, I'm happy to say it is working, and speaking with the guys at Motion Sound, they did not know what the issue was, as there is no switch or contact like that in the jack nor any setting that would disable the Sim output. I will call them while it is happening if it happens again. In summary, if you are using a sim built into your clone, or are considering moving air for any reason, you owe it to yourself to check this or something like it out. Just remember that some boards may have the Leslie effect in the samples themselves, and in that case, you'd be running the Leslie effect through the rotary speaker, which you probably don't want to do. But, if you can bypass the rotary effect, then you will find there is nothing like using a real rotary.
Music background: Hobbyist, Band Leader

Pro-3x Sound Enhancement

I wrote 2 reviews already on this great rotary speaker, but I just found another way to maximize the overall quality of the sound on the recommendation of a techie friend of mine. Run cords from the left and right outputs of your keys/organ, DIRECTLY to your main AMP, instead of your left output running to the Pro-3x as the owners manual suggests. What this does is send the full maximized left & right channel signals to your MAIN amp. Then run a cord from your keys/organ HEADPHONE output, DIRECTLY to your Pro-3x, then a chord from the Sim output of the Pro-3x to a separate channel on the MAIN amp. Now you have 3 sources of sound from your keys/organ going to your main amp. That increases the quality and volume of the sound coming from both amps at least 30%-50%! Enjoy!!!
Music background: Pro Musician

Excellent Leslie Simulator !!!!!

The Motion Sound Pro3X is a great addition to your Organ sound. I have only had mine for a week and still trying to get the settings right for the sounds I want, but it has blown me away. I used to have 2 Leslie 122s with a B-3 and this is the closest simulator I have seen since.I am using a E-MU B3 sound module. I believe a good quality low rotor sim amp is the key for getting that clear beautiful low end sound along with the crisp highs from the Horn.You would not be sorry for purchasing one of these Pro3X horns. Have a Great Day and ROCK ON !!!!!
Music background: Been playing in Rock Bands for over 40 years.
See also: Keyboard Amps, Motion Sound, Motion Sound Keyboard Amplifiers