THE ULTIMATE TONEWHEEL ORGAN EXPERIENCE USER'S MANUAL Firmware version 1.00 www.Crumar.
Congratulations for purchasing your new Crumar Mojo. You made the right choice. Crumar Mojo is a modern classic, is built around the most recent technologies but feels and sounds as authentic as the real thing. We wish you years of enjoyment and good music with your new digital tonewheel organ. Make sure you read through this useful manual to explore its capabilities and, most importantly, have fun! SAFETY INFORMATION – Do not open the instrument.
WARRANTY – Crumar Mojo is subject to 12 months manufacturer's warranty. – Warranty extensions are at the discretion of the retailer. – Damages caused by misuse, improper maintenance or transportation are not covered by this warranty. – During the warranty period, the customer is entitled to repair or replacement of any parts considered defective at no charge. – The possible replacement of the entire product is at the manufacturer's discretion. CHAPTER SUMMARY: 1. 2. 3. 4. 5. 6. 7. 8. 9.
1. THE SOUND OF MOJO VB3-II virtual tonewheel organ The sound of Crumar Mojo is based on the same “core” of the virtual instrument GSi VB3-II. While the virtual instrument runs on regular computers, Mojo is built on a new dedicated DSP platform, purposedly designed by Crumar for the new Mojo line.
Hardware main features • Dual Manual Organ with two 61-note 5 octave C - C waterfall semi-weighted velocity sensitive keyboards • External optional Wi-Fi antenna for accessing the editor Web-App • Online USB wired editor • Two Groups of 9 Real Drawbars plus 2 pedalboard drawbars • Knobs for Volume, Drive, Reverb, Keyclick, Crosstalk, Percussion Volume, Balance, Distance, Bass, Middle, Treble • Four dedicated buttons for Tonewheel organ percussion.
2. THE COMMAND PANEL In this chapter we explore the command panel of the Mojo. Most of the controls on the panel are familiar to veterans of the tonewheel organs. If you fit that category, you've probably already recognized the drawbars, upper on the left, lower on the right, pedalboard in the middle; then the controls for the “Vibrato Scanner”, the four tablet switches for the percussion, and you've also noticed that everything is right where it belongs. 2.
2.3 – ROTARY SPEED BUTTON The large horizontal button labeled ROTARY SPEED is used to control the built-in Rotary Speaker simulator. When the simulator is on, push this button to switch between the slow and the fast speeds; push and hold for about half a second for braking the rotary speaker (stop position). When in brake, push again to return to the previous speed. The light will blink smoothly slow or fast, or will remain still, to indicate the current speed.
2.5 – UPPER PRESET Crumar Mojo offers two presets for each manual, plus the CANCEL position, the HOLD function, and of course the manual drawbar mode. PLEASE NOTE: Presets will only store the drawbar position, and nothing else. Also, when a preset is active, the percussion is turned off on the upper manual. This behavior reflects exactly what happens on the real tonewheel organs, with just a few changes.
2.7 – RIGHT SIDE KNOBS On the top row we have: – CLICK: use this knob to adjust the amount of keyclick noise, which is the typical noise you hear at the attack of each note, that on a real tonewheel organ is caused by electrical contacts underneath the keyboard; – XTALK: use this knob to adjust the amount of cross-talk effect. Also this is an effect found in the original tonewheel organ, mostly caused by the large amount of wirings that interconnect all the parts of the electronic circuit; – PERC.
3. THE REAR PANEL All the connections are present at the back panel. From left to right: – HEADPHONES: plug your headphones here to practice without an external speaker. This output is paralleled with the stereo line output. – AUDIO L & R: these are TRS jacks carrying balanced line outputs at a +4 dB level, but can also accept TS (mono) jacks for unbalanced signal. If you have to use long cables, we suggest to use all balanced connections.
4. ACCESSING THE EDITOR Since the Crumar Mojo is based on GSi VB3-II, there's a load of parameters that can be adjusted to obtain the desired organ sound. These parameters are accessible through the Editor software. Mojo offers two editors: 1. The internal editor, accessible through a Wi-Fi connection. The Mojo will function as an hot-spot that creates its own private network to connnect to. 2.
4.3 – EDITOR HOME PAGE When the connection is done and the Editor loads into your web browser, you should be able to see the main screen, like the picture here. On the top bar you can see an HOME icon. Tap here every time you need to return to this screen (don't use the BACK function of your browser). On the top right there are two more icons: one is for saving/loading snapshots, the other is for viewing an help page. The bottom bar contains links to other pages.
4.4 - SNAPSHOTS Mojo can save and recall up to 8 snapshot. A snapshot stores the values of all editing parameters, and can be used to store a particular setting that you might want to recall or for alternating between different settings. It's like having different tonewheel organs at your disposal. Tap the Snapshot icon on the top right of the editor screen if you wish to save (the red floppy disk icon) or recall (the green folder icon) one of the available shapshots.
5. ORGAN EDIT PARAMETERS Parameters for the organ part: – Generator: select a tonewheel generator from this list. Each generator is based on actual values as measured from real console organs of the B/C/A series. – Generator Shape: select between OFF (no shaping) or 3 levels of CUT and 3 levels of BOOST. These will modify the amplitude chart of the generator values according to different positions along the generator. This parameter does not apply any equalization to the sound.
– Perc Paradise Mod: this is a “hack” that causes the percussion to never decay. What's special in this is that if you activate the scanner vibrato effect, you'll notice that the vibrato is applied to the rest of the drawbars but not to the percussion tone. – Other settings: here you can adjust the depth of the vibrato circuit and the mix amount that affects the chorus settings, plus some parameters related to the generation of the KeyClick noise.
– Mid reflections: adjusts the amount of sound reflections happening in the middle of the stereo field. – Doppler intensity: the so called “Doppler” effect is the fundamental of the “Leslie” effect that causes the sound to be cyclically untuned while the sound source (the speaker) gets farther or nearer to the listened; this parameter lets you adjust the amount of this effect that is mostly caused by the sound reflections over the walls around the amplifier.
– Memphis Style: check this parameter to unplug the motors that drive the bass rotor. This way, the bass stays motionless while the horns keep spinning. – Front Stop: this very sought after function causes the horn and the bass rotor to stop always in a “sweet” spot every time the brake is engaged. VB3-II uses a simple algorithm that produces this effect in a very pleasant and seamless way that you won't even notice when you're braking the rotors. Notes on the rotation speeds.
6. EFFECT EDIT PARAMETERS Mojo features a built-in high quality stereo digital reverb that can be adjusted in a variety of ways in order to reproduce virtually any kind of artificial environment. Reverb settings are: – Decay: adjusts the average reverb tail length. – Damp: simulates various types of reflecting walls, from tiles to absorber panels. – Diffusion: adjusts the diffusion of traveling waves across the reflecting surfaces.
7. THE USB PORTS Mojo includes 2 Type-A “host” USB 2.0 ports. These are mainly used for updating the software, for file functions or for accepting external MIDI accessories. An interesting use for a USB system port is the possibility to connect a “Class-compliant USB-MIDI device”, i.e. one of the many MIDI devices that don't need special drivers when they are connected to a conventional computer.
9. SPECIFICATIONS Technical specifications: – power rating: 100 ~ 240 Vac – output level: +4 dBu – headphone output max load: 32 ohm – dimensions: cm 95 x 55 x 17 – weight: 18 Kg Crumar Mojo is a digital Musical Instrument designed and built in Italy. All rights reserved. All trademarks used herein are the property of their respective owners. Crumar is a trademark owned by: V.M. Connection Via Lucio Vero, 2 - 31056 Roncade (TV) - Italy www.Crumar.it Last update: April 2020.
