VOLTAGE RATINGS Check that the AC supply in your area is appropriate for your REV7. U.S./Canadian Model: 11 OV - 120V, 50/60Hz. General Model: 220V - 240V, 50/60Hz. ENVIRONMENTAL TEMPERATURE Do not expose the REV7 to excessive heat. The operating temperature range of this unit is between 0 and 40 degrees Centigrade (32 ~ 104 degrees Fahrenheit). EXTERNAL CLEANING DO NOT clean the exterior of the REV7 with solvents such as benzine or paint thinner. Dust, dirt, or fingermarks should simply be removed with a soft, dry cloth. Internal cleaning of the unit should only be done by a qualified technician. XLR TYPE CONNECTORS The XLR (Cannon) type Input and Output connectors are wired in the following configuration: Pin 1: GROUND. Pin 2: HOT. Pin 3: COLD. Ensure that all equipment connected to the REV7 matches this wiring.

FCC CERTIFICATION (USA)

This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturers instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient the receiving antenna. Relocate the computer with respect to the receiver. Move the computer away from the receiver. Plug the computer into a different outlet so that computer and receiver are on different branch circuits. If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful: How to identify and Resolve Radio-TV interference Problems. This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.

FRONT PANEL

POWER ON/OFF switch When the power is turned on, the last program and parameter selected will appear on the LCD. MONO/STEREO switch The REV7s reverb signal is always output in stereo, whether the input signal is stereo or mono. If a mono signal is received at the Left input only, this switch, when set to MONO, sends the direct signal out of both outputs. With a stereo input, this switch should be turned off. When switched to MONO the MONO LED is illuminated. (See the BLOCK DIAGRAM) INPUT LEVEL control Varies the level of the input signal, over a range of +10 dB to -90 dB. At position 8 gives nominal gain of +4 dB. EQ ON/OFF switch Allows you to switch the parametric EQ section ON or OFF, for instant comparison of equalized signal and original signal. When turned ON the EQ ON LED is illuminated. EQUALIZER section A three-band semi-parametric equalizer that allows you to equalize the input signal prior to being processed into a digital reverb signal. The direct signal is NOT affected. Each of the three bands has a frequency control and a level control (+/-15 dB). The frequency ranges are as follows: LO: 50Hz ~ 700Hz MID: 0.35kHz ~ 5kHz HI: 2kHz ~ 20kHz

MIXING control Allows you to balance the reverb signal with the direct signal. When turned completely to the left, only the direct signal is heard. When turned completely to the right, only the reverb signal is heard. DIRECT RECALL keys These keys allow rapid and direct recall of the 30 preset programs and the first 7 user programs, as explained in the DIRECT RECALL section. PARAMETER SELECT and +/-keys Allows selection of up to 7 programmable parameters relating to each of the preset programs, for editing and creation of new programs. Pressing the +/- keys raises or lowers parameter values and other values (MIDI channel number, program number, etc.) by 1; holding down these keys permits continuous increase or decrease. NUMERIC/EDITING keys For numerically entering program numbers or parameter values. Includes numbers 0 to 9 and decimal point. The CLEAR key zeros the display. The ENTER key enters the new value, when using the numeric keys for editing parameters. OUTPUT CONTROL keys The MUTE key cancels the entire output. The OUT PHASE key reverses the polarity of the right output of the reverb signal. The BYPASS key cancels the reverb signal only, for immediate comparison of direct signal/direct signal plus reverb. MIDI CTRL key Pressing this key puts the REV7 into the MIDI Control Mode, allowing you to set the MIDI Channel on which MIDI signals are received, and then program in pairs of voice numbers and effects numbers so that effects may be automatically selected from a MIDI instrument, by pressing its Voice Select keys. Note that this key must be turned OFF before selection of programs can occur.
i MEMORY keys When using the numeric keys to select a program number, first press the MEMORY key. After selecting a memory number with the numeric keys, press the RECALL key to recall a program. The STORE key is used for storing edited data when creating new programs, and for setting the REV7s MIDI Memory. LCD A Liquid Crystal Display, indicating program names, parameters and their values. MEMORY NUMBER LED A two digit numeric LED (Light Emitting Diode) indicating program numbers.
EQ ON LED Illuminates when the parametric EQ section is switched ON. MONO LED Illuminates when the MONO/STEREO switch is switched to MONO. INPUT LEVEL LED Indicates by an eight point LED the level of the input prior to processing, over a range of -30dB to 0dB.

REAR PANEL

Inputs The REV7 can accept stereo or mono signals for processing. The inputs are balanced line 1/4 TRS (tip-ring-sleeve) jacks (which will also accept standard 1/4 mono phone jacks) and balanced line XLR type connectors, rated at +4dBm nominal level. When feeding a mono input to the LEFT input only, pressing the MONO/STEREO switch on the front panel (the MONO LED will light) allows you to send the direct signal to both outputs. This places the direct signal in the center of the stereo reverberation. Do not press the MONO/STEREO switch when using a stereo input. Outputs The REV7s outputs are balanced TRS type phone jacks (also standard mono phone jacks) and balanced line XLR connectors, rated at +4dBm, with a maximum output level of +18dBm. Note that a mono input signal can be processed to create a stereo reverberation output.

MIDI IN, MIDI THRU Connectors To select effects programs from a MIDI device such as a DX7 synthesizer, connect the MIDI output of the external device to the REV7s MIDI IN terminal. The MIDI CTRL Switch should be turned ON only while setting the REV7s MIDI Memory. For actual selection of programs by MIDI, it should be turned OFF. See the section entitled MIDI SELECTION for more details. The MIDI THRU connector on the rear panel allows you to send on the MIDI control signal from the external MIDI device, in order to control a third MIDI device (which could well be a second REV7 unit, to provide independent control of Early Reflections and Reverberation). Remote Control Unit Connect the remote control unit to the terminal on the rear of the REV7, if you wish to select effects by remote control.

RC7 REMOTE CONTROL UNIT

DIRECT RECALL keys. These keys duplicate the functions of the corresponding keys on the front panel of the main unit. They allow rapid and direct recall of all 30 preset programs and the first 7 user programs, as explained in the REMOTE CONTROL RECALL section.

CONNECTIONS

The connections on the REV7 are simple and easy to make. Please be sure to read the PRECAUTIONS chapter prior to making any connections.

QUICK OPERATING GUIDE

This provides an at-a-glance guide to the recall and editing functions of your REV7. For a full explanation of the functions available on this advanced unit, please familiarize yourself with this entire manual.

PROGRAM RECALL

There are three ways to recall the REV7 programs (apart from REMOTE CONTROL). A. DIRECT RECALL Keys. For presets 1 ~ 30, user programs 31 ~ 37.

PARAMETER CHANGE

1. Presets 1 ~ 6. Press one of keys REV1 thru REV4, E/R1, E/R2. 2. Presets 7 ~ 30. Press the OTHERS key repeatedly until the desired program is called. 3. User Programs 31 ~ 37. Press the USER MEMORY key, then one of keys 31 ~ 37. B. NUMERIC KEYS. For all programs.
1. Select a parameter by pressing the appropriate Parameter Select key. 2. Alter the parameter value by using the Numeric keys or +/- keys. 3. Press the ENTER key (only necessary when Numeric keys have been used).

PROGRAM STORE

1. Press the MEMORY key. 2. Select program number (1 ~ 90) with Numeric keys. 3. Press the RECALL key. C. +/-Keys. For all programs.
1. Select the desired preset program. 2. Change the parameters as desired. 3. Press the MEMORY key. 4. Select a program number (31 ~ 90) with the Numeric keys. 5. Press the STORE key.
1. Press the MEMORY key. 2. Use the +/- keys to increase or decrease the program number (1 ~ 90).

BASIC OPERATIONS

First, a brief explanation of what happens when you use the REV7. (A look at the block diagram in this manual illustrates this in visual form). When a signal is sent into the REV7 reverberator, it is first EQd, then metered, then converted into a digital signal by an Analog/Digital converter. (NOTE: A stereo input is mixed to mono prior to being processed into a reverb signal. The direct signal, however, remains in stereo). The effect is then created within the Digital Signal Processor, the heart of the REV7. The processed digital signal is then converted back into a stereo reverb signal by two Digital/Analog converters, which create slightly different left-channel and right-channel reverberation patterns. This is then mixed with the direct signal using the Mixing Control. Once you have connected your REV7 to your mixing console, synthesizer, or other external equipment, the following operations should be carried out. 1. Switch power on. It is best to do this before switching on the power of the amplifier or mixer to which the REV7s outputs are connected, to avoid any clicks or bumps. 2. Press the MONO/STEREO switch for mono or stereo input. 3. Send a nominal level signal into the REV7, and adjust the Input Level Control so that it peaks at just under zero on the Input Level LED. 4. Set the Mixing Control to its half way point. This will allow you to hear an average mix of the reverb signal and the direct signal. Once you have selected an effect, you can then adjust the Mixing Control to your desired balance. 5. The output control switches should be as follows: MUTE: OFF OUT PHASE: OFF (this can be altered after selecting an effect). MIDI CTRL: OFF BYPASS: OFF The functions of these controls are explained in the FRONT PANEL section of this manual. 6. The REV7 has a sophisticated three-band parametric equalizer. The three bands have overlapping frequency ranges, so you can alter the frequency characteristics of the reverb sound (NOT the direct sound) in virtually any manner. Start by setting the level controls of each band at the zero (central) position (the controls have an indent at this position). After selecting an effect, you can equalize the reverb signal to match the acoustic environment, or to create a special effect. The EQ IN/OUT switch should be ON when adjusting equalization. NOTE: If you add a large amount of EQ to your signal, this may raise the level of the signal, and you can reduce it to peak at zero by adjusting the Input Level Control. You are now ready to select an effect on your REV7.

RECALL

This chapter explains in more detail the program selection operations covered in the QUICK OPERATING GUIDE. There are four ways of selecting (recalling) programs on the REV7: Direct Recall Selection, Numeric Key Selection, +/- Key Selection and Remote Control Selection. You can also select programs by an external MIDI device. See the section entitled MIDI SELECTION.

DlRECT RECALL

(Presets 1 ~ 30, User programs 31 ~ 37). The REV7s software program allows you to directly recall all the presets, and the first seven user programs. In fact, instant one-button recall is provided for presets 1 through 6 and user programs 31 through 37. This can be useful in situations where you dont have a lot of time on your hands-for example, a live performance. To directly recall presets, this is what you do: 1. First ensure that the USER PROGRAM key is OFF (its LED should not be illuminated). 2. The Direct Recall keys are printed with both a name and a number. The names refer to the presets. Pressing keys REV1 thru 4 will instantly recall presets 1 thru 4 respectively. The Memory LED will indicate the preset number, and the LCD will show the name of the preset and one of its parameters. 3. Pressing keys E/R1and E/R2 will recall presets 5 and 6. 4. Pressing the OTHERS key allows you to recall presets 7 thru 30. When you press this key the Memory LED and LCD will indicate that the last preset selected by this button has been recalled. Repeated pressings of this key will increment the memory up to preset 30, then begin again at 7.
To recall the first seven user programs: 1. Press the USER MEMORY key. Its LED will light. 2. The Direct Recall keys are printed with both a name and a number. The numbers refer to the User Program numbers. Pressing keys 31 thru 37 will instantly recall user program 31 thru 37 respectively. The Memory LED will indicate the program number, and the LCD will show the name of the program and one of its parameters. Note that in this case the OTHERS key calls only program number 37-it is not a multi-action key as with the presets.

NUMERIC KEY RECALL

(All programs) Selection of programs by the numeric keys is also rapid and efficient, and the advantage is that exactly the same operation is required for all programs, both presets and user programs. 1. Press the MEMORY key located to the right of the numeric keys (its LED will light). 2. Use the numeric keys to select a number from 1 to 90 (the number will flash on the Memory LED, and if you have entered a wrong number, press the CLEAR key to zero the LED, then select another number). 3. Press the RECALL key. The Memory LED will stop flashing, and the selected program will be displayed on the LCD. 4. If you have selected a user program number (31 ~ 90) that does not contain any data, the Memory LED will continue flashing. Press the CLEAR key to zero the LED, then select another number, and press RECALL.

REMOTE CONTROL RECALL

(Presets 1 ~ 30, User programs 31 ~ 37) The RC7 remote control unit exactly reproduces the functions of the Direct Recall keys marked REV1 thru 4, E/R1, E/R2, and OTHERS. The USER MEMORY key performs a similar function to the front panel USER MEMORY key. Pressing this key switches the REV7 between preset programs and user programs, indicated by the LEDs on the remote control unit. Of course, while the remote control unit is connected to the REV7, the front panel controls on the main unit may still be operated in the normal way. (Note that the remote controls LEDs will be activated by corresponding controls on the REV7s front panel). The remote control unit is, therefore, a direct recall device, and may be used for recalling the 30 presets and the first 7 user programs, as previously explained in the DIRECT RECALL section. So if you plan to use the remote control unit, its advisable to store your most needed user programs in memory numbers 31 through 37. Youll also need to set the Input Level, Parametric EQ Controls, Mixing Control and Output Controls to your desired setting, so that you dont need to touch the front panel again during your performance or session. A simple way to use the Remote Control Unit as a bypass switch is by selecting an appropriate effect-one where the level of the effect can be set at zero-and setting the relevant parameter levels to zero so that you create a new program that does not in fact alter the input signal. For example, select preset 7 (DELAY L, R) and set the delay level to 0%. Store this edited program in a convenient memory number, say 31. Then, when you select program 31 with your Remote Control Unit, any previous reverb effect will be cancelled and you will hear only your direct signal.

NOTE: Keep a record of your stored programs (on a copy of the USER PROGRAM CHART accompanying this manual) to avoid loosing important programs when storing new data. 1. Having completed the editing process, press MEMORY. 2. Use the numeric keys to type in the number of the destination of the new data (range: 31~90). This number will flash on the Memory LED. If you have typed in a wrong number, press CLEAR to zero the LED, and type in another number. 3. Press STORE to store the edited data. The LED will stop flashing, indicating that storage has taken place. NOTE: If you have tried to store data in the preset programs (numbers 1 thru 30) the LED will continue flashing, as these programs are protected. Press CLEAR and type in a new number. PERFORMANCE NOTE: The Direct Recall Keys and the remote control unit allow you to select only the first 7 User Programs. It is advisable, therefore, to store the programs you use most frequently in numbers 31 thru 37. You can move programs about within the User Program memory simply by recalling the program you wish to move, then carrying out the storage procedure. Note that when you store a program, any program previously stored in that user program memory will be erased.
EXPLANATION OF PARAMETERS
The preset programs in the REV7 fall into the following types: REV (Reverb), E/R (Early Reflection), Delay, Echo, and MOD (Modulation Type, including Phase, Chorus, and Flange type effects). Each of these program types has a specific selection of programmable parameters. Parameters indicates the separate, individual functions that make up each effect. There are two types of parameters in the REV7: invisible parameters (non-programmable, fixed value parameters) and programmable parameters (the ones that you can edit, or modify). You can set the parameters of two different presets to the same values, and the resulting effect may not be the same, due to the non-programmable parameters. Each preset has up to 7 programmable parameters. They are listed, with their preset values, in the MEMORY (ROM) CONTENTS CHART at the end of this manual. In this section well explain these parameters and list their individual value ranges. The front panel key which calls up each parameter will also be noted. These include R/T (Reverb Time-may be used for other parameters), INITIAL DELAY,1ST REF (First Reflection: a double-action key for setting level and delay of first reflection), and Function Keys F1, F2, F3 (for a variety of functions, depending on preset selected). All presets include the 1st Reflection feature, explained below. The level. of the 1st Reflection is usually preset at zero, so that you can program in just the amount of 1st Reflection that you need.

REV TYPE

Reverberation effects. Presets 1 through 4, 16 through 18, 22, and 29. matic Double Tracking) effects, or for thickening the sound of an instrument. The 1st Reflection is always a mono signal, and appears in the center of the stereo image. With all presets, the 1ST REF parameters are preset at the minimum (0% level, 0.1 msec delay time) so that you can program in exactly the amount of 1st Reflection you need. NOTE: The 1ST REF key is a double action key. Each time you press this key, it alternates between 1ST DLY and 1ST LEVEL (as displayed on the LCD), allowing you to set the values of the delay and level of the first reflection.
5. HI REVERB TIME. Range: 0.1 ~ 1.0 x MID R/T. Key: F1. 6. LOW REVERB TIME. Range: 0.1 ~ 2.4 x MID R/T. Key: F2. Natural reverberation varies according to the frequency of the sound-the higher the frequency, the more the sound tends to be absorbed by walls, furnishings, and even by air. These two parameters permit you to alter the reverberation times of the high frequency and low frequency portions of the signal, as a proportion of the mid frequency reverb time. 7. DIFFUSION. Range: 0 ~ 10. Key: F3. Reverberation is caused by multiple reflections that increase rapidly in complexity, according to the shape of the hall and any furniture or fittings therein. This rate of increase is known as DIFFUSION on the REV7. Setting the Diffusion parameter at 0 gives a less complex, clearer reverb effect, as in a regularly shaped room with simple, flat reflective surfaces. As you increase the setting, the sound becomes fuller, richer, and more expansive, giving the impression of a room that is not necessarily bigger, but has an irregular shape and contains many corners and fittings to multiply reflections, as in a theater with Proscenium, seats, orchestra pit, balconies, etc.
1. REVERBERATION TIME (R/T). Range: 0.3 ~ 10.0 sec. Key: REV TIME. The length of the time it takes for the level of reverberation at 1 kHz to decrease by 60 dB-virtually to silence. In a live setting, this depends on several factors: room size, room shape, type of reflective surfaces, among others. 2. INITIAL DELAY. Range: 0.1 ~ 100 msec. Key: INITIAL DELAY. For a listener in a concert hall, there is a time delay between the direct sound of the instrument, and the first of the many reflected sounds that together are known as reverberation. On the REV7, this is known as the INITIAL DELAY time. 3. 1ST REFLECTION Delay. Range: 0.1 ~ 100 msec. 4. 1ST REFLECTION Level. Range: 0 ~ 100% of direct signal level. Key: 1ST REF. A common phenomenon in a concert hall is a single reflection immediately after the direct sound. The 1ST REFLECTION feature enables you to accurately simulate this effect. Both the delay and the level of the reflection are adjustable. This is also useful for A.D.T. (Auto-

E / R1 AND E / R2 TYPE

Early Reflection effects. Presets 5, 6, 19 through 21, 23 through 28, and 30.
6. DIFFUSION. Range: 0 ~ 10. Key: F3. Same as for REV type presets. 7. MODE. Range: 1~ 6. Key: F1. This is a rather special case. All Early Reflection presets are switchable between 6 different Mode types. These are 1: SMALL HALL (a typical grouping of early reflections that would occur in a small performing environment), 2: LARGE HALL (a typical grouping of early reflections that would occur in a large performing environment), 3: RANDOM (an irregular series of reflections that could not occur naturally), 4: REVERSE (a series of reflections that increase in level, like the effect produced by playing a recorded echo backwards), 5: PLATE (a typical grouping of early reflections that would occur in a plate echo unit) and 6: SPRING (a typical grouping of early reflections that would occur in a spring reverberation unit). A slightly different early reflection for the left and right outputs creates a natural stereo effect. Although the name of each mode suggests a typical environment or effect, note that only the first group of reflections are generated, and they are not multiplied to produce the sound you might expect. Also, each of the E/R type presets has invisible parameters that further affect the sound, so the best course is to actually listen to the presets and their different modes, to get the full effect of each mode and appreciate the enormous creativity they provide. An Early Reflection Mode Chart can be found later in this manual. The REV7 produces 18 early reflections for each channel. It is possible to add a 1st reflection to these early reflections, in the center of the stereo image. *For the REVERB type effects, 3 early reflections are programmed for each channel.
1. INITIAL DELAY. Range: 0.1 ~ 100 msec. Key: INITIAL DELAY. The time delay between the direct sound of the instrument, and the first of the early reflections. 2. 1ST REFLECTION DELAY. Range: 0.1 ~ 100 msec. Key: 1ST REF. 3. 1ST REFLECTION LEVEL. Range: 0 ~ 100% of direct signal level. Key: 1ST REF. Same as for REV type presets. 4. LIVENESS. Range: 0 ~ 10. Key: REV TIME. Refers to the rate at which the reflected sounds fade. Set this parameter at zero to simulate an acoustically dead room, with absorbent surfaces to soak up the reflected sounds. As you increase the setting, the room appears to contain more live surfaces, with the reflected sounds fading more slowly, as they reflect from wall to wall, until at the maximum setting the effect is of an intensely reflective environment, containing many highly polished surfaces (tiles, glass, etc). 5. ROOM SIZE. Range: 0.1 ~ 10 x preset setting. Key: F2. In the REV7, the ROOM SIZE parameter indicates the time gaps between the early reflections-directly proportional to the size of the room. The effect of this parameter also depends on which early reflection Mode has been selected. A Room Size Chart can be found later in this manual.

DELAY TYPE

ECHO TYPE
1. INITIAL DELAY. Range: 0.1 ~ 100 msec. Key: INITIAL DELAY. Allows you to program in an additional delay time which equally affects both output channels. This brings the total possible delay time up to 1 full second. 2. 1ST REFLECTION DELAY. Range: 0.1 ~ 100 msec. Key: 1ST REF. 3. 1ST REFLECTION LEVEL. Range: 0 ~ 100% of direct signal level. Key: 1ST REF. Same as for REV type presets. 4. LEFT CHANNEL DELAY TIME. Range: 0.1 ~ 900 msec. Key: F1. 5. RIGHT CHANNEL DELAY TIME. Range: 0.1 ~ 900 msec. Key: F2. Permits highly accurate independent setting of the left and right delays. Note that the Initial Delay time is added onto these delay times. 6. DELAY LEVEL. Range: 0 ~ 100% of direct signal level. Key: F3. Permits simultaneous setting of left and right delay level, as a proportion of direct signal level.
1. INITIAL DELAY. Range: 0.1 ~ 100 msec. Key: INITIAL DELAY. Allows you to program in an additional delay time which equally affects both output channels. The first echo will not appear until this delay time and the echo delay time have elapsed. 2. 1ST REFLECTION DELAY. Range: 0.1 ~ 100 msec. Key: 1ST REF. 3. 1ST REFLECTION LEVEL. Range: 0 ~ 100% of direct signal level. Key: 1ST REF. Same as for REV type presets. 4. LEFT CHANNEL DELAY TIME. Range: 0.1 ~ 450 msec. Key: F1. 5. RIGHT CHANNEL DELAY TIME. Range: 0.1 ~ 450 msec. Key: F2. Permits highly accurate independent setting of the left and right delays. After this delay time has elapsed (plus the Initial Delay time) the first echo will appear. Subsequent echoes will appear at the same time interval, the number of echoes depending on how the Feedback Gain parameter is set. 6. FEEDBACK GAIN. Range: 0 ~ 99%. Key: REV TIME. This parameter permits adjustment of the number of echoes that follow the direct signal, from zero to a virtually infinite repeat at the maximum setting. The overall decay time of the effect is proportional to the Feedback Gain setting. 7. HIGH DAMP. Range: 0 ~ 10. Key: F3. This effect is produced by inserting a low-pass filter in the REV7 feedback loop. This causes a gradual suppression of the high frequency content at each echo. Effectively, this means that the high frequency reverb time becomes shorter in relation to the midrange reverb time. A bright, unfiltered direct signal blended with a more muted echo can often create an authentic and pleasing acoustic effect.

13. STEREO PHASING This effect is variable from an almost imperceptible slow-moving phase shift, to a rapid pulsation. The effect is created as follows. The input signal is split up into right and left signals. The right channel is delayed very slightly in relation to the left channel. A third signal, placed in the center of the stereo image, has its delay time modulated between zero and the right channel delay time setting, by the LFO. This means that the center signal will periodically approach and meet the left and right channels alternately, causing phase changes as it does so. This is a totally controllable digital version of the original phasing method: playing back the same signal on two tape decks whose minute fluctuations in speed caused phase changes-a rather haphazard method. The timing differences need to be very small, and on the REV7 can be set as low as 0.1 msec. 14. TREMOLO The tremolo preset is adjustable from a slow once-everyten-seconds roll to a twenty-times-a-second vibrato. It is produced in virtually the same manner as the Chorus preset, with the amplitude modulation emphasized (for a deeper, more rapid modulation). Most conventional tremolo effects use amplitude modulation and nothing more. The other parameters of this preset add extra richness and dimension, for a really modern, sophisticated sound. 15. SYMPHONIC Another effect based on the same modulation system as the Chorus preset. This time, the delay time modulation is more rapid and deeper, giving the effect more movement and more width, to create an expansive, spacious effect from any input signal. 16. SPRING Spring reverb, featured in many low-price reverberation devices, and often built into combo amplifiers or organs, can add a pleasing, bright ambient quality to high register instruments (lead guitar, flute) as well as vocals. 17. ECHO ROOM The authentic sound of the original echo device-the Echo Room, where the sound was transmitted from one end of a specially reflective room, and picked at the other end by a mike. A long, rich reverb effect versatile enough for all instruments. 18. STRINGS The first of several preset effects specifically designed for use on named instruments, though of course they can be used for any purpose. They all feature the six modes described in preset 5, above. For a string orchestra, the most natural reverb is found in older, medium size concert halls, and this reverb type program accurately simulates this environment. 19. ELECTRIC BASS A This E/R1 type preset actually creates the fullness and depth of a large reflex speaker cabinet of the type used for amplifying a bass guitar. So with a direct injection bass guitar you can achieve a rich deep sound without the inherent problems caused by miking up speaker cabinets. With this widely variable preset you can simulate a variety of tube amplifiers and speaker enclosures.

20. ELECTRIC BASS B This E/R2 type program is more live than the previous effect, and can add briliance and spice to complex, funky bass riffs. 21. KICK Superfast delays in this E/R1 type preset actively boost the sound of a bass drum, adding a vivid, yet solid presence, ideal for hard and heavy rock. 22. SNARE With this reverb type preset, you can transform an ordinary snare drum into a classic wall of sound effect used in many rock recordings. 23. GATE REVERB A common studio effect on contemporary recordings is produced by linking up various effects units-reverberator, digital delay, noise gate, compressor-so that a powerful reverb is produced, which suddenly cuts off, instead of fading gradually. This E/R1 type program reproduces that effect, and is nothing short of astounding when used on drums, creating an enormous sound that does not overhang and cloud up the overall sound of the band. 24. REVERSE GATE Closely related to the GATE REVERB preset, this program actually gives the impression of a reverse reverb effect. The reverb builds in intensity before cutting off sharply and dramatically. 25. PIANO The impressive sound of a concert grand piano in an ideal room setting can be created from virtually any piano, by the judicious use of this E/R2 type effect. 26. ORGAN With this E/R1 type preset it is possible to give an electronic organ the expansive, mellow sound of an old tube organ with its large wooden speaker cabinets. 27. BRASS Another useful E/R1 type effect, the BRASS preset enables you to add punch and sizzle to brass instruments, retaining their brilliance while expanding their harmonic qualities. 28.GUITAR An E/R2 type preset providing a mellow ambience that will delicately enhance the tone of any fine acoustic guitar. 29. HANDCLAPS This short, sharp reverberation type effect adds an almost metallic presence and fullness to handclaps, for a truly contemporary sound. 30. LIVE REFERENCE This E/R2 type preset simulates a standard live atmosphere. The effect is of a small, yet live, resonant room, elevating the tonal quality of any instrument or vocal to a brilliant, powerfully ambient timbre.

MIDI SELECTION

Using a set up like the MIDI Performance System shown in the APPLICATIONS chapter, it is possible to select any effect in the REV7 memory simply by pressing a Voice Select key on a MIDI keyboard. This allows you to have a different reverberation, echo, or other effect for each voice. This is highly desirable, as a keyboard such as the Yamaha DX7 Programmable Algorithm Synthesizer can create a virtually endless variety of voices-strings, clavinet, synth brass, percussion, banjo, etc., each of which requires a different type of reverberation. Use the numeric keys to input the number of the effect (MEM) you wish to use with the program you have selected. The range available is 1 to 90-this covers the 30 presets and the 60 user programs. This number will flash next to the MEM section on the LCD. NOTE: You can set the REV7 to the BYPASS mode (no reverb effect: direct signal output only) by setting the memory number to zero. Remember that at any time you can clear the MEM display by pressing the CLEAR key, and input another number. Finally, press the STORE key to store the program number plus memory number into the REV7. The memory number will stop flashing, and be displayed continuously on the LCD. 4. You now have three options: (a) You can continue storing pairs of program/memory numbers, by repeating operation 3. (b) You can change the MIDI channel receive number. Press the MEMORY key, and the LCD will revert to the RCV ch display, and you can repeat operation 2. NOTE: Pressing the MEMORY key alternates the REV7 between MIDI channel set and program/memory set, when the REV7 is in the MIDI Control mode. (c) You can switch the REV7 out of the MIDI control mode, by simply pressing the MIDI CTRL key. Its LED will go out. You can now select effects from your MIDI keyboard (or, of course, in the normal way, using the front panel keys or remote control unit). Connect the MIDI OUT of your keyboard to the MIDI IN of the REV7. Your keyboard should be set to transmit voice number information. In the case of a Yamaha DX7 synthesizer, for example, it should be set to SYSTEM INFO AVAILABLE. When you press a program select (voice select) key on your keyboard (provided, of course, you have programmed this voice number into the REV7) the REV7 will switch automatically to the corresponding effect, and this will be displayed on the LCD.

Reverb Time (RT) Initial Delay 1st Reflection High Freq. RT (F1) Low Freq. RT (F2) Diffusion D/A CONVERSION Number of Channels Sampling Freq. Quantization Band Width OUTPUT Number of Channels Nominal Level Impedance Maximum Level Mixing Bypass Out phase Mute
Reverb-1 LARGE HALL Reverb-2 SMALL HALL Reverb-3 VOCAL PLATE Reverb-4 PERCUSSION PLATE E/R - 1 EARLY REFLECTION-l E/R - 2 EARLY REFLECTION-2 OTHERS DELAY (Number 7) to LIVE REFERENCE (Number 30) 0.3 to 10.0 sec, on Mid. band 0.1 to 100.0 msec. Delay Time (0 to 100.0 msec) & Level (0 ~ 100%) Mid. RT x (0.1 ~ 1.0) Mid. RT x (0.1 ~ 2.4) Diffusion (10 steps)
ELECTRIC CHARACTERISTICS Dynamic Range Reverb : more than 78dB Delay : more than 84dB Distortion Direct Signal 0.03% Reverb Signal 0.1% Band Width Direct Signal 20 to 20kHz Reverb Signal 20 to 12kHz Residual Noise Level Reverb mode : less than 60dBm Delay mode : less than 66dBm DIMENSIONS (W x H x D) WEIGHT POWER SUPPLY 480 x 89.9 x 342.5mm (18-7/8 x 3-1/2 x 13-1/2) 5.3 kg (11.7 Ibs) U.S./Canadian Model 110V 120V, 50/60Hz General Model 220V 240V, 50/60Hz REV 1 REV 2 REV 3 REV 4 E/R 1 E/R 2 OTHERS USER MEMORY
2 31.25 kHz Linear 16 Bit 20 Hz to 12 kHz

REMOTE CONTROL

Electronically Balanced x 2 (Phone Jack) Electronically Balanced x 2 (XLR type) +4dBm 600ohms + 18dBm Direct Signal, Reverb Signal ON/OFF Ch.R (Reverb Signal) can be alternated ON/OFF
* NOTE: Since natural sounding reverberation is mixed with the direct sound, and hence does not constitute 100% of the sound, the effective dynamic range will nearly always exceed 90 dB. ** 0 dBu is 0.775 volts RMS. This value represents voltage across a high impedance input. dBu is the equivalent of dBu if specified across a 600 ohm load.
[ Digital Reverberator ] Date : 4/23, 1985 Model REV7 MIDI Implementation Chart Version : 1. 0 Recognized Function. Basic Channel Mode Default Changed Default Messages Altered 1-16 1-16 OMNI OFF/OMNI ON x x memorized memorized Remarks
Note x Number : True voice x Velocity Note ON Note OFF After Touch Key's Ch's x x x x x x Control Change

Pitch Bender

1Prog Change : True # System Exclusive System : Song Pos : Song Sel Common : Tune

O x x x x

x System :Clock Real Time :Commands x :Local ON/OFF : A l l Notes OFF Mes- :Active Sense sages:Reset Notes Aux x x x x *1 For program 1 - 128, memory #1 - #90 is selected.
Mode 1 : OMNI ON, POLY Mode 3 : OMNI OFF, POLY
Mode 2 : OMNI ON, Mode 4 : OMNI OFF,

MONO MONO

o : Yes x : No
SERVICE The REV7 is supported by Yamaha's worldwide network of factory trained and qualified dealer service personnel. In the event of a problem, contact your nearest Yamaha dealer.

Since 1887

NIPPON GAKKI CO., LTD. HAMAMATSU, JAPAN

REV7 OM

Yamaha Corporation of America 6600 Orangethorpe Avenue, P.O. Box 6600, Buena Park, CA 90622-6600

8/26/98 29553

Yamaha REV7 Digital Reverb

Specifications

Input Number of Input Channels Nominal Input Level Input Impedance Input Level Control Mono/Stereo SW Input Mixing Parametric EQ A/D Sampling Freq. A/D Quantization A/D Conversion Band Width Number of A/D Conversion Channels. Factory Presets (30) Electronically Balanced x 2 (Phone Jack), Electronically Balanced x 2 (XLR type) +4 dBm 10Kohms Volume, Gain + 10dB - -90dB Mono - Ch.L + R Activated, Stereo - Ch.L. & R Activated In Stereo mode, Ch. L & R are mixed and sent to A/D converter Low: 50 - 700Hz +/- 15, Mid: 350 - 7 kHz +/- 15, High: 2k - 20kHz +/- 15.3 bands 31.25kHz Linear 16 Bit 20Hz to 12kHz 1 Reverb 1 - LARGE HALL, Reverb 2 - SMALL HALL, Reverb 3 - VOCAL PLATE, Reverb 4 PERCUSSION PLATE, E/R - 1 -EARLY REFLECTION-1, E/R - 2 -EARLY REFLECTION-2, OTHERS - DELAY (Number 7) to LIVE REFERENCE (Number 30) 0.3 to 10.0 sec, on Mid. band 0.1 to 100.0 msec. Delay Time (0 to 100.0 msec) & Level (0-100%) Mid. RT x (0.1 - 1.0) Mid. RT x (0.1 - 2.4) Diffusion (10 steps) 2 31.25 kHz Linear 16 Bit 20 Hz to 12 kHz Electronically Balanced x 2 (Phone Jack), Electronically Balanced x 2 (XLR type) +4dBm + 18dBm + 18dBm Direct Signal, Reverb Signal ON/OFF Ch.R (Reverb Signal) can be alternated ON/OFF
Reverb Time (RT) Initial Delay 1st Reflection High Frequency RT (F1) Low Freq. RT (F2) Diffusion Number of D/A Conversion Channels Sampling Frequency D/A Conversion Quantization D/A Conversion Band Width Number of Output Channels Nominal Output Level Output Impedance Maximum Level Output Mixing Bypass Out phase Mute
Presets (ROM) User Memory (RAM) MIDI Control Display Knobs Keys Dynamic Range Distortion Band Width Characteristics Residual Noise Level Dimensions Weight Power Requirements Power Consumption Remote Control
1 - - 90 (Non Volitile) All parameters except Input Level and parametric EQ can be memorized MIDI Channel, Program Number 16 character 2 lines LCD x 1, 2 digits numeric LED for Memory Number, 8 points level meter LED Input Level Volume, Parametric EQ (Low, Mid., High) Function Keys, Numeric and +/- Keys, Direct and BYPASS ON/OFF Keys, MUTE, MIDI Reverb: more than 78dB, Delay: more than 84dB. Direct Signal 0.03%, Reverb Signal 0.1% Direct Signal 20 to 20kHz, Reverb Signal 20 to 12kHz. Reverb mode: Less than -60dBm, Delay mode: less than -66dBm (W) 18-7/8" x (H) 3-1/2" x (D) 13-1/2") 5.3 kg (11.7 lbs) U.S. & Canadian models: 110/120V, 50/60Hz; General model: 220/240V, 50/60Hz. U.S. & Canadian models: 25W, General model: 25W REV 1 - E/R 1, REV 2 - E/R 2, REV 3 - OTHERS, REV 4 - USER MEMORY