alesis quadra verb 2 manual 8

Trouble-Shooting

QuadraVerb 2 Reference Manual 95

CHAPTER 8

TROUBLE-SHOOTINGTrouble-Shooting Index

If you are experience problems while operating the QuadraVerb 2, please use thefollowing table to locate possible causes and solutions before contacting Alesiscustomer service for assistance.

Symptom Cause SolutionThe display does not lightwhen the ON/OFF switch isturned on.

No power. Check that the powercable is plugged inproperly.

Display is blank. Display contrast is seteither too high or low.

Adjust the displaycontrast. Press[GLOBAL], turn[VALUE/ENTER].

No audio is heard. The digital input isselected.

Press [GLOBAL], press[PAGE >] four times, thenturn [VALUE/ENTER]knob counterclockwise.

Bypass is on with no directroutings set.

Select another programwith routings.

Bypass is on with GlobalDirect Signal Mute On.

Go to GLOBAL page 9and set it to OFF.

Bypass is on, with DirectLevel From Input set toNONE.

Go to MIX and set DirectLevel to 100% .

Program being edited hasno input or outputroutings.

Go to ROUTING page 3(Delete Route) and checkthe existence of routingsfor each block and the L/ROUT by rotating the[VALUE] control to see allinputs to that block.

Effect output level is low ona single Program.

Master Effects Level isbelow 100%.

Press MIX and raise thelevel.

Clicks are heard in theaudio using digital I/O.

Digital clock conflict. Provide a master 48 kHzclock or repatch thesystem. Set the receivingunits clock to external.

ADAT clock setimproperly.

Hold SET LOCATE andpress DIGITAL IN until thedisplay says "DIG".

Distortion (red LEDs flashbefore meter is full).

Internal DSP is clipping. Lower the LEVEL of anyrate feeding a block that isoverloading.

Unit does not respond tofront panel controls.

Unknown softwareconflict, cosmic rays, orstatic electricity.

Disconnect MIDI input.Power down and powerup. If this doesn't work, tryreinitialization, then totalreset (see later in thischapter).

Trouble-Shooting

96 QuadraVerb 2 Reference Manual

MIDI Program Changes areoff by 1.

Transmitter doesn'tdisplay true MIDI ProgramChange numbers.

Change the transmitter todisplay 0-127, or setup aProgram Table in the Q2.

Error MessagesAlthough the digital signal processing power in the QuadraVerb 2 is powerful andfeatures plenty of memory, the programmability of the unit makes it possible to comeacross various error messages when exceeding its limitations. This is the QuadraVerb2s limit handling software kicking in. Depending on the message you get, you mayhave to modify your Program by altering or removing unnecessary Blocks in order tocomplete the task. The error message will vary depending on what limitations you areattempting to exceed.

If you are using two reverb Blocks and you try to create a third, the following messagewill appear:

DSP IS FULL

This means there is not enough processing power available to create the additionaleffect. But there may be enough available to add an EQ, two pitch effects and twodelays (or some other combination).If you have created four pitch Blocks and you try to create a fifth, the followingmessage will appear:

OUT OF LFOS

This means that there are no more available LFOs (low frequency oscillators), whichare required by all pitch effects. However, the larger reverb effects (Plate 2, Room 2,Chamber 2 and Hall 2) use 1 LFO each. This means if you had three Pitch Blocks anda reverb Block using one of the larger reverbs, you would not be able to add a fourthPitch Block. Also, the Pitch type Mono Lezlie uses two LFOs, which means thatwhen using it you will only have two LFOs available.

While the QuadraVerb 2 has a custom DSP chip that processes all the effects, someof the effects available require that the main microprocessor assist in handling someof this responsibility. On occasion, you may be using enough effects simultaneouslythat no more processing power is available from the main microprocessor; example:when you try to create more than three Multi Tap Delays in a Program. In these cases,the following message will appear:

BLOCK COMBINATION NOTALLOWED

Finally, if a Delay Block has its delay time to 5 seconds (5,000.0 ms), and you try tocreate another Delay Block and set its delay time to 460 ms or higher, you will get aEffect Memory is Full message. There is actually 5,455.9 ms of delay memoryavailable. Although you could create 8 Delay Blocks, they all share the available delaymemory. Therefore, when setting the delay time of each Delay Block you would onlyhave available the amount of delay memory not being used by the other Delay Blocks.When all memory is being used, the following message will appear:

EFFECT MEMORY IS FULL

Trouble-Shooting


Checking the Software VersionThe current software version may be determined by holding [GLOBAL] and pressing[PROGRAM]. The display will indicate the currently installed software version.

Re-initializingTo re-initialize the QuadraVerb 2, hold down both [PROGRAM] and [COMPARE]while turning on the power. This will reset all Global parameters to their defaultsettings, and will initialize the edit buffer so that the current Program is set to itsdefault settings (no Blocks/routings). However, none of the Programs in the Userbank or the Preset bank are changed when re-initializing the unit this way.

Total ResetA more drastic version of re-initializing the QuadraVerb 2 will erase all User Programs,as well as resetting all Global parameters. Hold down [PROGRAM], [COMPARE], and[

Trouble-Shooting


For prompt service, indicate the RA number on the shipping label. If you do not havethe original packing, ship the QuadraVerb 2 in a sturdy carton, with shock-absorbingmaterials such as styrofoam pellets (the kind without CFCs) or bubble-packsurrounding the unit. Shipping damage caused by inadequate packing is not coveredby the Alesis warranty.

Tape a note to the top of the unit describing the problem, include your name and aphone number where Alesis can contact you if necessary, as well as instructions onwhere you want the product returned. Alesis will pay for standard one-way shippingback to you on any repair covered under the terms of this warranty. Next day service isavailable for a surcharge.

Field repairs are not normally authorized during the warranty period, and repairattempts by unqualified personnel may invalidate the warranty.

Service address for customers in the USA:

Alesis Product Support3630 Holdrege AvenueLos Angeles, CA 90016

Customers outside the USA: Contact your local Alesis dealer for warrantyassistance. Do not return products to the factory unless you have been given specificinstructions to do so. Note that the warranty is valid only in the country of origin.

MIDI Implementation Chart - Chapter 8


MIDI IMPLEMENTATION CHARTFunction Transmitted Recognized Remarks

BasicChannel

DefaultChanged

X* * * * * * * *

1 16

ModeDefaultMessagesAltered

XX* * * * * * * *

Mode 3X

NoteNumber True Voice

X* * * * * * * *

0 1270 127

Velocity Note OnNote Off

XX

OX

AfterTouch

KeysChs

XX O

Pitch Bender X OControlChange

0 123 X O

ProgChange True #

X* * * * * * * *

O 0 1270 99 Preset, 00-27User

System Exclusive O OSystemCommon

Song PosSong SelTune

XXX

XXX

SystemRealtime

ClockCommands

XX

XX

AuxMessages

Local On/OffAll Notes OffActive SenseReset

XXXX

XXXX

Notes

Mode 1: OMNI ON, POLY Mode 3: OMNI OFF, POLY O : YesMode 2: OMNI ON, MONO Mode 4: OMNI OFF, MONO X : No

Effects Processing Index


SPECIFICATIONSElectricalFrequency Response: 1dB from 20Hz to 20kHzDynamic Range: >90 dB "A" wtg., 20 Hz-22 kHzDistortion (THD+N):



Factory Preset Programs (ROM): 100Internal processing resolution: 24 bit accumulatorDelay memory: 5 secondsEQ effects: Lowpass Nonshelving, Bandpass Nonshelving,

Highpass Nonshelving, Lowpass Shelving,Bandpass Shelving Low & High, HighpassShelving, 2-Band Sweepable, 3-BandParametric, 4-Band Parametric, 5-Band Graphic,1-Band Resonator, Mono Tremolo, StereoTremolo, Pseudo Stereo Expander

Pitch effects: Mono Chorus, Stereo Chorus, Quad Chorus,Mono Flanging, Stereo Flanging, Phasor, MonoLezlie, Stereo Lezlie, Pitch Shift, Pitch Detune,Ring Modulator

Delays: Mono Delay, Stereo Delay, Ping Pong Delay,Multi Tap Delay, Tap Tempo Mono Delay, TapTempo Ping Pong Delay

Reverbs: Mono Room, Room 1, Hall 1, Plate 1, Chamber1, Room 2, Hall 2, Plate 2, Chamber 2, LargePlate, Large Room, Spring, Nonlinear, Reverse

Front PanelControls Input Level (Left/Right)

Output

Keypad Program StoreCompare Bypass< Block > < Page >Type GlobalRouting NameParameter MIDIMix Modulation

Indicators Dual, 4-stage LED VU metersCustom LCD display

Rear PanelInput (Left and Right) 1/4" 3-conductorOutput (Left and Right) 1/4" 3-conductorBypass 1/4" (accepts normally open or normally closed

momentary switches, such as the Alesis PD)Advance 1/4" (as above)Digital (In and Out) EIAJ fiber optic cable jacks (Toslink connectors)MIDI (In and Out/Thru) 5 pin DINPower 4 pin Barrel

EFFECTS PROCESSING INDEXFunction Effect % of DSP % of Memory LFOsEQ Lowpass Filter 6 1 0

Bandpass Filter 15 1 0Highpass Filter 6 1 0



Lowpass Shelf 8 1 0Highpass Shelf 8 1 01 Band Low Parametric 15 1 01 Band High Parametric 7 1 02 Band Sweep Shelf 15 1 03 Band Parametric 30 1 04 Band Parametric 35 1 05 Band Graphic 34 1 0Resonator 3 1 0Mono Tremolo 3 1 1Stereo Tremolo 7 1 1Stereo Simulator 14 1 0

Pitch Mono Chorus 4 1 1Stereo Chorus 8 1 1Quad Chorus 20 1 1Mono Flanging 3 1 1Stereo Flanging 8 1 1Phasor1 17 1 0Mono Lezlie 10 1 2Stereo Lezlie1 16 1 1Pitch Shift 7 1 1Pitch Detune 7 1 1Ring Modulator1 15 1 0

Delay Mono Delay2 2 3 0Stereo Delay 4 6 0Ping Pong Delay2 3 6 0Multi Tap Delay3 15 14 0

Reverb Mono Room 28 11 0Room 1 33 11 0Hall 1 33 11 0Plate 1 33 11 0Chamber 1 40 11 0Room 2 76 11 0Hall 2 61 11 1Plate 2 64 11 1Chamber 2 64 11 1Large Plate 67 11 1Large Room 91 11 1Spring 41 11 0Nonlinear 38 -- 0Reverse 38 -- 0

1Only one per Program. 2Incl. Tap Tempo versions 3Max. 3 per Program

alesis quadra verb 2 manual 8

Documents