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USB editor - how to

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If your Mojo61/Seven/Mojo Classic is updated with the latest firmware (the wired editor doesn't work with old firmwares) you can take advantage of the USB (or wired) editor. This is how it works. 1) B...

I can't connect to the Wi-Fi editor

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Some of the most recent Crumar instruments feature a built-in editor application that can be accessed from a computer or from a mobile device using the common Wi-Fi connection. This kind of connection...

Noises, hum, hiss, ground loop noise, strange key release sounds on my instrument.

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Almost all our instruments are "Class II" that means they don't have the earth connection, they do not require it. Earth, ground, hum, ground loops and audio devices are not perfect science, so it can...

What are the differences between Crumar Seven and Crumar Seventeen?

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Basically Seven and Seventeen are different instruments but they share some features. 1) Sounds: Seven has multiple physical modeled engines plus the sample player, Seventeen has only one physical mod...

Expression pedals for Mojo organs explained

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We currently have two pedals designed for Mojo61, Mojo Classic/suitcase and Mojo desktop: one is called EXP-20-MS (switchpedal) and one is called EXP-10.  EXP-20-MS : to control the expression or swel...

Keyboard action explained

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This is a common issue: we sometimes receive complaints from our customers regarding the action of our keyboards (I mean the keybeds, the physical keys) being not 100% consistent or being noisy or too...

The best way to amplify our instruments

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The first rule must be this one: if the instrument is stereo, you need a stereo amplifier: many of our sounds, for example the sound of the organ WITH the rotary simulation requires a stereo amplifier...

Mojo61 and Mojo Classic editor page - saving settings, global, snapshots.

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When you are connected to the editor of the Mojo61 or Mojo Classic it is important to understand the difference between global settings and sound editing settings. The first page you will find in the ...

Why are keys in the right side of the keyboard (high keys or treble) sustained even when the damper/sustain pedal is not pressed?

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On an acoustic piano and also in some electromechanical pianos, if you release the keys or release the damper pedal while playing, the sound stops because the dampers press down on the strings stoppin...

UP4 USB volume pedal

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What is UP4 USB pedal and how it works? This is a volume/expression pedal based on Arduino. Officially this is a GMLab products but you can also find this on the market under the brand Crumar. GMlab a...

Firmware, software, hardware modification, custom features, custom products

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We do not make custom modifications to our instruments. Even if we are not an industrial company with thousands of workers and many of our products are handmade, our production follows the standards. ...

Recovery mode - Seven, Mojo61, Mojo Classic.

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There may be some cases where your instrument may enter into recovery mode; this means that the internal software fails to boot. Upon powerin on, all the panel lights remain on without proceeding with...