Quick Links. Download this manual. Table of Contents. Alesis quadrasynth audio-keyboard: reference manual pages. Do not use this product near water - for example, near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming pool, or the like.

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Quick Links. Download this manual. Table of Contents. Alesis quadrasynth audio-keyboard: reference manual pages.

Do not use this product near water - for example, near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming pool, or the like. Page 8: 1: Setting Up Alesis warranty card It is important to register your purchase; if you have not already filled out your warranty card and mailed it back to Alesis, please take the time to do so now.

AC Power Hookup The QuadraSynth Plus works with the voltage of the country it is shipped to either or V, 50 or 60 Hz , and comes with a line cord or power supply suitable for the destination to which the keyboard is shipped. Page 9: Line Conditioners And Protectors Do not operate any electrical equipment with ungrounded outlets. Alesis cannot be responsible for problems caused by using the QuadraSynth Plus or any associated equipment with improper AC wiring. Page Playing The Demo Sequence Playing the Demo Sequence The QuadraSynth Plus has a built-in demo sequence which demonstrates the wide variety of sounds this amazing instrument is capable of generating.

Additionally, there are Mixes in each of the 5 Banks. The display will change to indicate the currently selected MIDI channel. Try out some of these functions while playing the keyboard.

The sound of the effects can also change by using these controllers. The effect of these realtime controllers varies from Program to Program; Example: Press [0] then [5] for Mix 5. If you start entering a number and change your mind, wait a few seconds and the QuadraSynth Plus will revert to the previous Mix number. Selecting Banks Use Quad Knob [1] to adjust the level. Changes to Mix parameters are temporary and will be lost if another Mix is selected.

Each of these Sounds has its own effects send level and effects bus assignment. Page 31 MIDI outputs. Page 33 Connections: Chapter 3 If your footswitch seems to respond backwards notes sustain unless the footswitch is pressed , turn off the QuadraSynth Plus, make sure the footswitch plug is fully inserted into the footswitch jack, then turn the power back on.

The other end should emit a soft red light it is not dangerous to look directly at this light. Therefore, much thicker and richly textured sounds can be created. It can be used for live performance, in which sounds are layered or assigned to sections of the keyboard. In Mix Play Mode, they are used to select one of the 16 Programs for viewing and editing.

Page Parameter Editing Change the parameter value. You can edit the value either by turning the associated Quad Knob for large value changes or pressing the VALUE [ ] and [ ] buttons for smaller changes. Page 43 more negative value from the midpoint. Always refer to the parameter name strip in the display above the bargraphs for the current parameter label and value.

Feel free to make changes and twist dials; these will not be made permanent unless you store the Program described later. Page 46 Volume, Pan and Output of a single sound. In Edit 4 Mode, the Level function has three pages: all four sound volumes are page 1, all pans are on page 2, and all outputs are on page 3.

See Chapter 9 for more information on external storage operations. Doing so will result in recalling a different Program and you will lose your changes. Or, Press any other button to cancel out of the Store operation without storing. Doing so will result in recalling a different Mix and you will lose your changes. If you have edited any of the Programs in the Mix or the Effects Patch, you must store them separately.

Take a note of the number. This recalls the edit buffer in Program Mode, which is your edited Program. Page 54 Use Quad Knob [2] to enter the Program number you noted in step 6.

If necessary, use Quad Knob [1] to select a Card Bank. If necessary, use Quad Knob [1] to select the Bank. Mix Mode is one of the most powerful features of the QuadraSynth Plus. While in Program Mode you can play only one Program at a time, in Mix Mode you can play up to 16 Programs at once, either from the keyboard as layers or splits or from an external sequencer via 16 MIDI channels or a combination of both.

Page 59 Editing Mixes: Chapter 5 changes will be lost. The same goes for editing the Effects, which will be stored with its associated Program. If you select another Mix before storing, your changes will be lost. There are five Banks available in the QuadraSynth Plus. Program Number to This determines the Program Number — for the selected When set to OFF, the channel will not be sent to either set of outputs but can still feed an effect bus.

A thick line will appear above any active MIDI channels as you play notes or send notes to the QuadraSynth Plus from a sequencer on those channels.

Page Transmitting Midi Volume And Panning This determines whether or not the selected channel will respond to the keyboard, pitch-bend and mod wheels, foot pedals and sustain pedal of the QuadraSynth Plus itself. Range Page 3 The following four parameters determine whether or not specific types of MIDI information will be received or transmitted, and are set separately for each Channel in the Mix.

Page Naming A Mix 10 characters long. Use the PAGE [ ] and [ ] buttons to position the cursor. Quad Knob [1] selects the character. The QuadraSynth Plus will generate MIDI messages from the keyboard, regardless of the Range settings for that channel in the Mix, but it will not play the internal sound. Page 6: Editing Programs Also, become familiar with the signal and modulation flow within the QuadraSynth Plus as shown in the various block diagrams included in this manual so that you can understand the many ways in which you can process a signal as it works its way from oscillator to output.

The QuadraSynth Plus comes with factory preset programs, and user-editable programs. You can layer these sounds together, or divide them into regions of the keyboard, or a combination of these things. The following diagram illustrates the signal flow within each QuadraSynth Plus Program. Page Voice LFO, and other control sources described later. Note that the waveforms in the QuadraSynth Plus are different from those found in samplers or many sample-playback units.

Because the QuadraSynth Plus has its own filter module and amplitude module for Page Amp Program as it is raised. But in synthesizer programming, modulation is used to control even the basic characteristics of a voice: its attack, decay, and release times, for example. It is a complete digital signal processing unit with four input buses, simultaneous multiple effects, and flexible signal routing.

You can use Quad Knob [4] in each Function page to select which one of the 10 drum sounds to edit. Here is a block diagram of a sound in Drum Mode. Each group has a variety of samples from which you can choose, although some groups such as waves have more samples than others. Page Level Aux outputs means that the sound will appear at only the left Aux output.

Page Pitch The higher the number either positive or negative , the greater the amount of pitch change for a given amount of aftertouch.

Page 83 Use 1-PITCH mode when you want a program sound layer to play a single pitch polyphonically throughout the entire keyboard range. Page Filter More negative values drive the cutoff frequency lower for a given amount of velocity.

Tip: Many acoustic instruments, such as acoustic guitars, sound brighter when you play them more forcefully. Page 85 Editing Programs: Chapter 6 positive velocity control over the filter can simulate more realistic acoustic sounds.

Page 86 The higher the number negative or positive , the greater the effect. Applying aftertouch with this parameter set to a positive value raises the amplitude; conversely, applying aftertouch with a negative value will make the sound softer the harder you press.

Page 90 By adjusting the Sound Overlap value, you can still hear the previous note fading away after the new note has been played. It is important to note that Sound Overlap can have a negative effect on polyphony. Page 91 64 voices in no time. By adjusting the Sound Overlap to a lower value, you decrease the number of voices used by each new note, and thereby ensure there are voices available to play other sounds, if necessary.

Although the QuadraSynth Plus keyboard does not generate poly pressure, the sound generators can respond to poly pressure signals entering via the MIDI In. Page 96 Pitch Bend Wheel is used. However, moving the Mod Wheel while the Quantize parameter was on would cause the pitch of a held note to rise in half-step increments. A positive value raises the level as more Aftertouch is applied.

Page Filter Lfo Mod Wheel will add more tremolo. On the other hand, if the Mod Wheel parameter is set to , raising the Mod Wheel to the top will cancel out all tremolo. Page The higher the value, the slower the LFO fades in. Attack 00 to 99 This is the amount of time the envelope will take until it reaches its maximum output level. Page if the Delay is also set to 0 in PENV Page see below ; a setting of 99 will result in a much slower attack, taking many seconds before the envelope gets to maximum.

This indicates that the Delay stage of the envelope will wait indefinitely until the key is released before continuing on to the remaining envelope stages Attack, Decay, etc. Page Filter Envelope Sustain to 98 and the Decay to This will cause the envelope to take the maximum amount of time to get from peak level to a level of 98, before the Sustain Release portion of the envelope begins.

Page Setting the Release time to 0 is good for playing those short funky riffs that you hear on a clavinet. Setting the Release time to 99 will take the envelope a very long time to reach zero level.

Page However, this does not effect the attack time, but only the decay, sustain, sustain decay and release segments.


Alesis QuadraSynth Plus Reference Manual

The QuadraSynth was introduced in by Alesis , and it was their first major synthesizer. It's a voice, key digital synthesizer that also came in a rack-mountable version: the S4 Sound Module. It also featured the same multi-effects processor as the QuadraVerb 2, drum kits based on the D4 drum module, 4 assignable control knobs, one PCMCIA card slot, 48kHz clock input, and 4 audio outputs. The QuadraSynth is undoubtedly a powerful and flexible synthesizer capable of creating rich sounds - both acoustic and electronic.


Alesis QuadraSynth Reference Manual

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Alesis QuadraSynth Plus User Manual


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