Rocktron Studio Series PROHUSH Noise Reduction Instruction Manual

ProHUSH
INSTRUCTION MANUAL -
STUDIO SERIES
INTRODUCTION
The Rocktron Studio Series PROHUSH is a professional MIDI programmable single- ended noise
reduction system with features unsurpassed by any single-ended noise reduction system.
This operating manual will introduce you to the PROHUSH and its various functions. After reading
this manual carefully, keep it for future reference.
PRECAUTIONS
NOTE: IT IS VERY IMPORTANT THAT YOU READ THIS SECTION TO PROVIDE YEARS OF
TROUBLE FREE USE. THIS UNIT REQUIRES CAREFUL HANDLING.
All warnings on this equipment and in the operating instructions should be adhered to and all
operating instructions should be followed.
Do not use this equipment near water. Care should be taken so that objects do not fall and liquids
are not spilled into the unit through any openings.
DO NOT ATTEMPT TO SERVICE THIS EQUIPMENT. THIS EQUIPMENT SHOULD BE
SERVICED BY QUALIFIED SERVICE PERSONNEL ONLY. DO NOT REMOVE THE COVER FROM
THIS EQUIPMENT AT ANY TIME. DO NOT MAKE ANY INTERNAL ADJUSTMENTS OR ADDITIONS
TO THIS EQUIPMENT AT ANY TIME. DO NOT TAMPER WITH INTERNAL ELECTRONIC COMPQO-
NENTS AT ANY TIME. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY VOID WARRANTY
SERVICE TO THIS EQUIPMENT, AS WELL AS CAUSING SHOCK HAZARD.
VOLTAGE RATINGS
Make sure your AC outlet satisfies the voltage rating to avoid damage to this unit. The back of this
unit will be rated one of the following:
JAPAN: 100 Y 50/00Hz
US/CANADIAN - 115 V 50/60Hz
GERMANY/FRANCE/FINLAND 220/240 V 50/60Hz
OPERATING TEMPERATURE
Do not expose this unit to excessive heat. This unit is designed to operate between 32F and 104F
(ОС and 40C). This unit may not function properly under extreme temperatures.
Before using your PROHUSH, please read and follow these operating
instructions completely. The following QUICK SET-UP instructions are by
no means complete, but should get you started. Please take the time to
go back and thoroughly read the entire manual at your soonest
convenlence.
QUICK SET-UP
Set—up
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— rs
Plug your PROHUSH Into an
AC outlet (115YAC U.S.A.).
Step 2: Connect PROHUSH Channel Input jacks to output of your chain of
effects. Connect PROHUSH Channel Output jacks to the Input
of amplifier, mixing console, etc. He
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console
SCROLLS Engage power switch IN. A segment
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Step 3: _ T RE ROC ° © Y _ test will flash on the front panel
display and then It will begin to scroll
"ROCKTRON PROHUSH”,
= * + * o
о ° °' 4 O 03% secsres 020" » | Press RECALL button. The PROHUSH
automatically recalls PRESET 1 after
Step 4: power—up on Channal A and Channel B,
with STEREO MASTER “ON”. By tuming
STEREO MASTER “OFF”, Channel B
5, , ©| recalls PRESET 2,
ово RE роны
To Change Preset Programs
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To Change Parameters
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step 3: | 10 Æ TEE
To Store New Presets
Push A/B button to desired channel.
STEREO MASTER must be “OFF” to
adlt Channel B.
Turn SELECT PARAMETER control to preset
position. (Full c.c.w.)
Turn ADJUST control untll desired preset
number and title fiash.
Frese RECALL button.
title will ba displayed.
The new preset
Push A/B button to desired channel.
STEREO MASTER must be "OFF” to
edit Channel B.
Turn SELECT PARAMETER contro! to the
position of the desired parameter to be
changed. The PROHUSH will then display
the current setting of the parameter.
Turn ADJUST control untll the desired
setting Is accomplished. (NOTE: It
la not necessary to store each
Individual parameter. You may store
the entire program once It Is completed.)
After altering a preset to the desired sound, or after creating a totally original preset, the
PROHUSH allows you to store this program Into preset numbers 1-128.
NOTE: To store a new preset, the SELECT PARMETER control must be In one of ths parameters
other than PRESET or MIDI.
positions.
SCROLLS
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Step 2: iE or BK OTER
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Step 3:
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3
The PROHUSH will not store a program when left in elther of these two
Push the EDIT/STORE button, to initiate
the store procedure. “ENTER PRESET
wlll scroll across the display.
Tum the ADJUST control to the desired
preset number you wish to store your
new program Into.
Push the EDIT/STORE button a second
time. "STORED" should flash across
the display, verifying that your program
is stored Into memory.
FRONT PANEL DESCRIPTION
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(1)... POWER SWITCH:
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(2). . POWER ON/OFF LED:
When lit, this LED indicates that the unit is in operation.
(3). . PARAMETER SELECT CONTROL:
8 positions (Preset function, 6 adjustable parameters, and MIDI options) full counter
clockwise 10 full clockwise.
Preset function
PRESET: preset number and title, 128 total presets available Adjustable Parameters
EXPANDER:
THRESHOLD: Expander Threshold, +10dB to -70dB
BELEASE: Expander Release, 0.055 sec. to 10 sec.
RATIO: Expander Ratio, 1:1 10 20:1
FILTER:
THRESHOLD: Filter Threshold, -20dB to -70dB
RELEASE: Filter Release, 0.04 sec. to 4.00 sec.
CUT OFF: Filter Cut-Off, 400Hz to 6KHz
MIDI Options
MIDI: mapping status, program mapping, controller mapping, and MIDI channel number
independent for Channel A and Channel! B.
(4). . DISPLAY PANEL:
The Display panel consists of six alphanumeric characters of 14 segments each. On initial
power up, the LED display will show a brief LED segment test.
(b).. ALTERED INDICATOR:
The ALTERED indicator is the first decimal point of the first character of the display. When
thisdecimal pointis lit, itindicates that the ADJUST control has beenturnedto adifferent value (ALTERED
value), than the value which is stored in that preset (STORED value).
(6). . RECALL BUTTON: function dependent on the SELECT PARAMETER control
Whenthe SELECT PARAMETER controlisin PRESET, the RECALL button is used to recall
the displayed preset number.
When the SELECT PARAMETER control is in one of the six adjustable parameters, {Expander
Threshold, Filter Cut-Off, etc.), the RECALL button is used as a toggle between the STORED value and
the ALTERED value.
When the SELECT PARAMETER control is in MIDI, the MIDI options can be stepped through by
using the RECALL button. The options are: mapping status, program mapping, controller mapping, and
MIDI channel number.
(7). . ADJUST CONTROL: function dependent on the SELECT PARAMETER control
When the SELECT PARAMETER contro! is in PRESET, the ADJUST control can be used
to select a preset number and to edit preset titles.
When the SELECT PARAMETER control is in one of the six adjustable parameters, the ADJUST
control allows the user to select the different values available for a particular adjustable parameter.
When the SELECT PARAMETER control is in MIDI, the ADJUST contro! selects the value of the
different MIDI options.
(8). . .EDIT/STORE BUTTON: function dependent on the SELECT PARAMETER control
When the SELECT PARAMETER controlis in PRESET, the EDIT/STORE button is used fo
initiate the title edit function. All 128 preset titles can be edited to whatever the user prefers.
When the SELECT PARAMETER control is in one of the six adjustable parameters, the EDIT/
STORE button is used to copy a preset into another preset. itis also used AFTER changing a parameter
value when the CHANGED value is to be entered into the memory in place of the previous value.
When the SELECT PARAMETER control is in MIDI, use the EDIT/STORE button after entering
any MIDI information that is to be STORED (saved) in the memory.
(9). . STEREO MASTERS LED:
When lit, this LED indicates that the PROHUSH isin Master/Slave, in which Channel Ais the
Master, and Channel B is the Slave.
(10). . STEREO MASTER BUTTON:
This switch allows the user to select for either stereo or mono applications, transforming a
two mono-channelled unit into stereo. For stereo applications this switch ties both channels together for
precision tuning. When the stereo master is IN, the controls for Channel A are master and the controls
for Channel B are slave. This parameter can be stored into each preset.
(11). . DISPLAY A/B LED:
These LEDs indicate which channel has been selected. NOTE: when in Stereo Master, the
Display A/B LED will always indicate Channel A (master).
(12). . DISPLAY A/B BUTTON:
This switch toggles between Channel A and Channel B for entering and viewing parameters.
(13). . EXPANDER METER:
This four segment meter indicates -40, -20, -10 or -3dB of expansion taking place.
(14). . FILTER METER:
This seven segment meter indicates the bandwidth ofthe filteras being 0.4,0.8,1.6,3.2,6.4,
12.8, or 30KHz.
(15). . CHANNEL A IN/OUT SWITCH:
(16). . CHANNEL A IN/OUT LED:
(17). . . CHANNEL B IN/OUT SWITCH:
(18). . CHANNEL B IN T LED:
REAR PANEL DESCRIPTION
506 e
(1). . CHANNEL B INPUT JACK: 1/4" balanced
Tip: +, Ring: -, Sleeve: ground
(2). . CHANNEL B OUTPUT JACK: 1/4" balanced
Tip: +, Ring: -, Sleeve: ground
(3). . CHANNEL A INPUT JACK: 1/4" balanced
Tip: +, Ring: -, Sleeve: ground
(4). .. CHANNEL A OUTPUT JACK: 1/4" balanced
Tip: +, Ring: -, Sleeve: ground
NOTE: FOR UNBALANCED APPLICATIONS, STANDARD 1/4" MONO JACKS CAN BE USED AND
THE PROHUSH AUTOMATICALLY COMPENSATES FOR FULL OUTPUT LEVEL.
(5). . MIDI IN CONNECTOR: standard MIDI 5 pin din connector
The MIDI In connector must be connected to the MIDI Out connector of the transmitting
device via a standard MIDI cable, orto the MIDI Thru connector of the preceeding device ifthe PROHUSH
Is within a chain of MID] devices.
(6).. MIDI THRU CONNECTOR: standard MIDI 5 pin din connector
The MIDI Thru connector can be connected to the MIDI In connector of another MIDI device
via a standard MIDI cable. There are limitations to the number of devices that can be chained (series
connected) in this fashion. For further information, read the MIDI FORMAT section concerning MIDI In
and MID! Thru.
(7). . AC POWER CORD:
NOTE: VERIFY THE VOLTAGE OF YOUR AC WALL QUTLET AGREES WITH THAT OF THE UNIT.
This cord is provided to connect the unit to your AC wall outlet. DO NOT RUN THIS UNIT FROM
CAR BATTERIES OR ANY OTHER EXTERNAL POWER SOURCE.
CONNECTIONS
STEREO QUTPUTS TO AMPLIFIERS
AMPLIFIER HN
IN FROM
—a— STEREO
FRO HUSH OUTPUTS
STEREO OUTPUTS TO MIXING CONSOLE
FROM
+ STEREO
[INPUTS ———" DEVICE
OUTPUTS
CONS E OUTPUTS INPUTS
| PRO HUSH
USING BOTH CHANNELS SEPERATELY
IN Device PT Nbgevice PY
OUTPUT OF
INSTRUMENT
(GUITAR) — RAMP]
ETC.
CH. A CH.B
IN OUT IN y QUT
| PRO HUSH |
MONO OUTPUT TO AMPLIFIER
[IN
FROM MONO
AMPLIFIER OUTPUT INPUT ———4— DEVICE
PRO HUSH | OUTPUT
USING MIDI
MIDI MIDI
OUT IN
[ MIDI DEVICE | | PRO HUSH |
USING A CHAIN OF MIDI DEVICES
MIDI MIDI MIDI MIDI
OUT IN THRU IN
| MIDI DEVICE | | PRO HUSH | | MIDI DEVICE |
MIDI MIDI MIDI MIDI
OUT IN THRU IN
| MIDI DEVICE | | MIDI DEVICE | | PRO HUSH |
BASIC FORMAT
The PROHUSH single-ended noise reduction system is comprised of two parts; the expander and
the dynamically controlled low pass filter.
Expander Section
The expander operates like an electronic volume control. The design utilizes a voltage controlled
amplifier (VCA) circuit which can controlthe gain between the input and output from unity to 30, 40, oreven
50dB of gain reduction. When the input signal is above the user pre-set threshold point, the VCA circuit
is at Unity gain. This means that the amplitude of the output signal will be equal to the input signal. As
the input signal amplitude drops below the user preset threshold point, downward expansion begins. At
this point, the VCA operates like an electronic volume control and gradually begins to decrease the output
signal level relative to the input signal. For example, if the input signal were to drop below the threshold
point by 10dB, the output would drop approximately 12dB. As the input signal drops further below the
threshold point, downward expansion increases exponentially. For example, if the input signal dropped
20dB below the threshold point, the output level would drop by approximately 60dB, i.e. 30dB of gain
reduction. Inthe absence of any input signal, the expander circuit will reduce the gain so that the noise
floor becomes inaudible. (Fig. 1)
Typical Expansion Ratio with 0dB Threshold
INPUT QUTPUT
O O
-10 — 10
—20 — —20
— 50 — —30
“ao FE —40
— 50 — — — 50
— 80 — — —60
— 70 — — =70
~ ВО — — — 80
-90— — -90
— 100 — —=100
FIGURE 1
Expander Controls
Expander Threshold: The Expander Threshold sets the point at which downward expansion
begins. This is variable between -70dB and +10dB. For subtle fade outs, a setting between -60dB and
-70dB would be suitable. In contrast, for severe gating applications, a setting between -10dB and +10dB
would be suitable.
Expander Ratio: Once the signal level falls below the threshold point and downward expansion
begins, the ratio of expansion can be adjusted. The ratio is adjustable from 1:1 to 20:1. For every 1dB
of attenuation at the input, the output will attenuate to the ratio setting. For example, at a ratio of 20:1,
a slight drop of 1dB of signal at the input will cause the output to drop by 20dB. (NOTE: at a ratio setting
of 1:1, the audio signal remains unaffected by the entire expander section.)
Expander Release: The Expander Release sets the time period for how long the expander takes
to attenuate relative to approximately 20dB down. This is adjustable between 0.055 sec. to 10 sec. For
quick transients, a fast release time would be suitable. Forlong, slow fades a slow release around 10 sec.
would be suitable.
Filter Section
The dynamically controlled low pass filter operates as follows. Inthe absence of any audio signal,
the dynamic filter will close down to the variable preset cut-off point. This means the filter is only allowing
frequencies below this cut-off point to pass through. If the cut-off was set at 400Hz, and an input signal
had a bandwidth of from 20Hz to 1KHz, the filter would open far enough to pass up to the 1KHz frequency
and its harmonics, while reducing any noise present from approximately 2KHz to 20KHz. If a broad band
signal, with frequency components up to 20KHz appears at the input, the dynamic filter would open to its
full extreme allowing the bandwidth to open all the way to 40KHz. In simple terms, what this means is that
if a signal is present at the input which is primarily bass components, the dynamic filter will reduce any
mid or high band noise. However, if the input signal has high frequency components present, the dynamic
filter will open to its full extreme to pass the signal and eliminate the possibility of a loss of high end
frequency response. (Fig 2)
FIGURE 2
7 AUDIO FILTER BANDWIDTH
20HZ 20KHZ
MASKED NOISE FILTERED NOISE
Filter Controls
Filter Threshold: The Filter Threshold sets the point at which the dynamic filter will start to open.
This is adjustable between -70dB and -20dB. A good starting point for this control is at the -70dB setting.
The filter will open and pass broad band signal unaffected. By slowly turning the Adjust control clockwise,
the filter will become less sensitive and begin to eliminate high frequency noise.
Filter Release: The Filter Release sets the time pericd for how long the dynamic filtertakes to close
down, or release, to the set cut-off point after being opened from audio signal. This is adjustable from 0.04
sec. to 4.00 sec. For long fades or passages with reverb, a slow release time of 4.00 sec. would be
suitable. For composite audio signals, a faster release time between 0.04 sec. and 0.07 sec. would be
adequate to reduce “breathing”.
Filter Cut-Off: In the absence of any audio signal, the dynamic filter will close down to a set cut-
off point. The cut-off frequency varies between 400Hz and 6KHz. This setting should be adjusted
according to how much high frequency noise is present in the audio signal. With large amounts of mid
10
and high frequency noise, a setting around 400Hz would be suitable. With very small amounts of high
frequency noise, a setting between 2KHz to 6KHz would work best.
MIDI Format
MIDI stands for Musical Instrument Digital Interface and was established as a specification which
would make it possible to exchange information (program changes, expression control, etc.) between
different musical equipment. MID! makes it possible for a user of MIDI compatible equipment to expand
a music system and to change system configurations to meetchanging requirements. Some MID! devices
have the ability to transmit MIDI, some to receive MIDI and others can both transmit and receive MIDI.
A MIDI transmitter originates messages in MIDI format and transmits them. A MIDI receiver accepts
messages in MIDI format and executes MIDI commands.
The Rocktron Studio Series PROHUSHis a MIDI receiver. Inorderforitto receive MID! information
and execute MIDI commands, itis necessary to use the PROHUSH in conjunction with a MIDI transmitter
device. The PROHUSH is compatible with MIDI transmitters that send MIDI as well as SY SEX (System
Exclusive), and MIDI Time Code (MTC). It will respond only to MIDI program changes, and MIDI controller
changes. It will not be affected by other MIDI commands or information.
The PROHUSH is actually two MIDI devices in one package. Each channel (A or B) operates as
an individual MIDI device independent of the other. Each channel of HUSH can be sent MIDI commands
on any one of 16 MIDI channels or either HUSH channel can be set to receive on OMNI (will receive MIDI
commands on all MIDI channels). Each channel can set any of the MIDI parameters independent of the
other channel. For example:
CHANNEL A CHANNEL B
PRESET 1 PRESET 2
FLAT MIX 1
MAP OFF MAP ON
PROGRAM MAPPING PROGRAM MAPPING
1 to 10 1 to 100
2 to 20 2 to 20
CONTROLLER MAPPING
EXP. THR. =0
EXP. REL. = OFF
MIDI CHANNEL = 1
CONTROLLER MAPPING
EXP. THR. = 110
EXP. REL. = 97
—
MIDI CHANNEL = 2
11
MIDI IN AND MIDI THRU
MIDI information is received through the MIDI In jack. The MIDI signal received from the MIDI IN
jack can be passed on to other MIDI devices by using the MIDI Thru jack. MIDI receivers can only take
the MIDI information and execute the commands, they can not send their own commands out either back
to the device transmitting MIDI or to other devices that receive MIDI. The MIDI Thru jack simply sends
the original MIDI input signal that it received from the MIDI In jack, however, there is a limit to the number
of devices which can be chained (series connected) in this fashion. With more than three devices, a slight
distortion of the MIDI signal can occur, which can cause an errorin MIDI signal transmission. Should this
problem arise, a MIDI Thru box can be used, which connects directly to the MIDI device which transmits
MID information and has multiple connectors forthe multiple devices receiving MIDI. MIDI cables should
not exceed 50 feet (15 meters) in length and for connecting multiple devices within a single rack, short
cables of only a foot or two in length are much more desirable.
FACTORY SET UP
Your Rocktron Studio Series PROHUSH was set up at the factory in the following set-up. Unless
otherwise indicated, these settings are fully changeable and programmable by the user.
PRESETS
On initial power up, your PROHUSH will ALWAYS come up in preset 1, Channel A.
Upon receiving your PROHUSH, the factory presets 1-20 are repeated through the remaining
memory locations (presets 21-128). This allows the user to select and modify a program with sound
characteristics closest to the user's preference. All factory presets can be written over.
MIDI OPTIONS
Mapping Status is set to OFF.
Program Mapping is set to a one to one correspondence. (1=1, 2=2, 24=24, etc.)
Controller Mapping is set as follows: (usable mapping from 0-120, and OFF)
O=EXPANDER THRESHOLD CHANNEL A 7=EXPANDER THRESHOLD CHANNEL B
1=EXPANDER RELEASE CHANNEL A 8=EXPANDER RELEASE CHANNEL B
e=EXPANDER RATIO CHANNEL A 9=EXPANDER RATIO CHANNEL B
I=FILTER THRESHOLD CHANNEL A 10=FILTER THRESHOLD CHANNEL B
4=FILTER RELEASE CHANNEL A 11=FILTER RELEASE CHANNEL B
5=FILTER CUT-OFF CHANNEL A 12=FILTER CUT-OFF CHANNEL B
6=STEREO MASTER CHANNEL A
MIDI Channel Numberis set to OMNI (which will receive on ALL channels}, for both Channel A and
Channel B.
These are the settings your PROHUSH will be set to upon receiving it from the factory. The
PROHUSH will otherwise be set (upon subseguent power up) to the programmable setting changes that
the user has made and stored.
12
OPERATION
Power Up
When the PROHUSH is initially powered on, the LED display will show a brief LED segment test.
All LED segments are lit briefly indicating that all segments are working. The PROHUSH then
automatically recalls preset 1. The message "ROCKTRON PROHUSH" will scroll (and continue to scroll)
untilthe SELECT PARAMETER or ADJUST controls are turned, orthe RECALL or EDIT/STORE buttons
are pressed. (At this time, the display will flash “PRESET”, "PR 17, and the title of Preset 1, visually
displaying the recalled preset.)
“PRESET" is a particular position ofthe SELECT PARAMETER control of the PROHUSH. There
are eight positions in the SELECT PARAMETER control. Full counter clockwise is PRESET, which
selects preset number and title. There are 128 different presets available to recall. Initially factory presets
1-20 are repeated through the remaining memory location (presets 21-128). Each individual preset stores
a selected value for six adjustable parameters. These six stored values in each preset are what
determines how each particular noise reduction preset will operate.
R Nin tored Pr
Step 1: To RECALL a particular preset, turn the SELECT PARAMETER contro! full counter
clockwise. This positionis PRESET. The display will flash "PRESET", then, “PR" and the preset number
currently being used will flash for about one second, and then the preset title will appear on the display.
Step 2: To change to a different preset than what is currently displayed, turn the ADJUST control
until the number of the desired preset is displayed. The new preset number and title will continue to flash
until the RECALL button is pressed.
Step 3: Pressing the RECALL button will change the preset to the new preset number. Until the
RECALL button is pressed, no change in preset takes place.
Step 4: To CANCEL the RECALL mode, eitherturn the ADJUST control back to the original preset
number, or turn the SELECT PARAMETER control clockwise into another setting. No change will take
place as long as the RECALL button is not pressed.
hanging Adjustable Parameter Value
Step 1: One position clockwise of PRESET (full counter clockwise), is the first of the next six
positions of the SELECT PARAMETER control that are adjustable parameters for modifying in each
preset. Each parameter is displayed when the SELECT PARAMETER control is turned to their position.
(Refer to the BASIC FORMAT section for information on what stage of the PROHUSH each parameter
adjusts.)
Step 2: The parameter value stored for each of the six adjustable parameters will be immediately
modified by turning the ADJUST control to the desired new value. As soon as the parameter value is
changed, the Altered Indicator lights. The Altered Indicator is the decimal point of the first character of
the display.
Step 3: To immediately return to the stored value in the preset, press the RECALL button. The
RECALL button will allow the PROHUSH to alternate between the currently stored value and an adjusted
value. This allows the user to compare the two values with the touch of a button. Ali of the six adjustable
parameters can be modified in this same manner.
13
Storing Changed Parameter Values
Step 1: To STORE a changed parameter value into a preset, use the ADJUST control while in the
adjustable parameter who's value you wish to change. {The Altered Indicator light should be on, verifying
that the value in NOT a stored value.) Essentially you are going to copy the changed preset over the
currently stored preset.
Step 2: Press the EDIT/STORE button to initiate the copy mode. “ENTER PRESET” will scroll
across the display. Wait until the scolling is completed, and the current preset number and the current
preset title is flashing alternately back and forth.
Step 3: Press the EDIT/STORE button, the display will flash “STORED” briefly, indicating that the
changed parameters are now stored in that preset.
Step 4: If the EDIT/STORE button is pressed before the completion of the scrolling message
"ENTER PRESET", the changed preset will NOT store. Press the EDIT/STORE button another time to
store.
Storin reo Ma r
To make a particular preset recall with Stereo Master IN, simply push the Stereo Master button IN
while inthe preset you want, and in one ofthe six adjustable parameters, then push the Edit/Store button.
After "ENTER PRESET” stops scrolling, push Edit/Store again.
Copying Presets
Step 1: To COPY one preset into another, recall the preset that is to be copied. Changes to any
of the adjustable parameters can be made at this time.
Step 2: Then after making any adjustments, press the EDIT/STORE button while in any one ofthe
adjustable parameters. This will initiate the copy mode.
Step 3: "ENTER PRESET” will scoll across the display. Wait until the scrolling is completed. The
current preset number and current presetftitle will flash alternately back and forth untilthe ADJUST control
is turned to the new preset number to which the copy is to be entered and the EDIT/STORE button is
pressed. (The modified preset can be copied over itself simply by pressing the EDIT/STORE button
without turning the ADJUST control to a different preset number.)
Step 4: The selected preset number and title will continue to flash until the EDIT/STORE button
Is pressed. The display will then flash “STORED” briefly. This will indicate that the current preset
parameters were successfully STORED in to the new preset.
Step 5: lithe EDIT/STORE button is pressed before the scrolling message “ENTER PRESET” has
finished scrolling, no store will take place. Press the EDIT/STORE button another time to store.
Step 6: To CANCEL the copy mode once it has been initiated, turn the SELECT PARAMETER
control one position in either direction. The display will briefly flash “CANCEL” and the PROHUSH will
return to the state is was in before the copy was initiated.
Editin Pr Titl
Step 1: The titles for presets 1-128 can ALL be modified. To EDIT a title of a specific preset, that
preset must be RECALLED.
Step 2: With the title of the preset to be changed displaying, pressing the EDIT/STORE button will
initiate the title edit mode. “TITLE EDIT” will scroll on the display, then the current title will appear with
the decimal point of the first character on (flashing).
Step 3: Turn the ADJUST control to change the first character of the title.
14
Step 4: When the desired character is selected, press the EDIT/STORE button to store the
character and start editing the next character. Each time the EDIT/STORE button is pressed, the flashing
decimal point will advance to the next character. (After each characteris edited, the EDIT/STORE button
must be pressed to store that character.)
Step 5: To end title editing, press the RECALL button, or turn the SELECT PARAMETER control.
Recalling MIDI ion
The most clockwise position of the SELECT PARAMETER control is MIDI. The MIDI options
available are as follows: mapping status, program mapping, controller mapping and MIDI channel
number. These options may be stepped through by pressing the RECALL button repeatedly. At each
option, the status can be viewed. By turning the SELECT PARAMETER control counter clockwise while
in any mode but the program mapping or controller mapping, you will exit the MIDI options.
Mapping Status
Mapping status turns the program mapping ON or OFF. When the program mapping is OFF and
a MIDI program change is initiated, the preset number recalled is the program number sent via MIDL.
When the program mapping is ON and a MID! program change is initiated, the program number sent via
MIDl is mapped to a preset number and that preset is recalled by the PROHUSH. The program mapping
status may be changed by turning the ADJUST control and pressing the EDIT/STORE button. The
changed status will remain in effect until it is changed again, even after the unit is powered down.
Program Mapping
The program mapping is initially programmed for a one to one correspondence. (That is, MIDI
program number nine is mapped to preset nine, ten to ten, etc.) The program mapping may be changed
by selecting the MIDI program number viathe SELECT PARAMETER control, then by selecting the preset
number to map to via the ADJUST control. The preset number may also be turned to the OFF position,
thereby not responding to the corresponding MIDI program change. Once the desired preset number is
selected, press the EDIT/STORE button to save the change for each altered mapping. The mapping
change must be STORED before the PROHUSH will respond to it.
Controller Mapping
The controller mapping will map a PROHUSH adjustable parameter to a MIDI controller number,
starting at controller zero through controller 120, or OFF. The controller mapping may be changed by
selecting the parameter via the SELECT PARAMETER control, then by selecting the control number via
the ADJUST control. The control number may also be turned to the OFF position, thereby not letting that
parameter respond to any MIDI controller change. Once the desired control number is selected, press
the EDIT/STORE button to save the change for each altered mapping. The mapping change must be
STORED before the PROHUSH will respond to it.
MIDI Channel Number
The MIDI channel number is the channel that the PROHUSH will receive MIDI commands on. To
immediately change the channel number turn the ADJUST control to the desired channel. The channel
number may be set to channel number 1-16, OMNI (receives on all channels), or to the OFF position.
(Thereby not allowing the PROHUSH to receive any MIDI commands.) The changed channel must be
stored before the PROHUSH will respondto it. Be sure that the MIDI channel of the PROHUSH matches
the MIDI channel of the transmitting device you wish to receive MIDI information from.
15
Each channel of HUSH is capable of receiving MIDI commands on its own MIDI channel,
independent of the other channel of HUSH.
To choose adjustable MIDI parameter for Channel A:
Step 1: Press A/B button so that Channel A LED is lit.
Step 2: Turn SELECT control clockwise until “MIDI” is displayed. The first adjustable parameter
is program mapping status ON/OFF, etc.
To choose adjustable MIDI parameter for Channel B:
Step 1: Press A/B button so that Channel B LED is lit.
Step 2: Turn SELECT control clockwise until "MIDI" is displayed. The first adjustable parameter
is program mapping status ON/OFF, etc.
Each channel of HUSH may be set to the same MIDI channel or to different MIDI channels or set
to OFF or OMNI, or any combination of the above.
16
(DIGITALLY CONTROLLED PROGRAMMABLE SINGLE-ENDED NOISE REDUCTION)
MODEL: PROHUSH
SOFTWARE VERSION: 1.0
DATE: AUGUST 21, 1989
MID! IMPLEMENTATION CHART
FUNCTION
BASIC DEFAULT
CHANNEL CHANGED
DEFAULT X
MODE MESSAGES X
ALTERED X
NOTE TRUE
NUMBER VOICE X
VELOCITY NOTE ON X
NOTE OFF X
AFTER KEY'S X
TOUCH CHANNEL X
PITCH BEND X
CONTROL 0,7 0
CHANGE 1,8 0
29 0
3,10 0
4,11 0
5,12 0
6 0
0-120, OFF 0
PROGRAM TRUE
CHANGE NUMBER 0
SYSTEM EXCLUSIVE X
SYSTEM SONG POSITION X
COMMON SONG SELECT X
TUNE REQUEST X
SYSTEM CLOCK X
REAL TIME COMMANDS X
AUX. LOCAL ON/OFF X
MESSAGES ALL NOTES OFF X
ACTIVE SENSING
SYSTEM RESET X
0=CH.
1=CH.
2=CH.
3=CH.
4=CH.
5=CH.
6=CH.
RECOGNIZED
1-16, OMNI, OFF
1-16, OMNI, OFF
E > > > > > >
— wk =k ED CD AJ
го O nl
000
+ LL
ооо
O00
TIL
DO
REMARKS
MAY BE SAVED IN
NONVOLATILE MEMORY
EXPANDER THRESHOLD
EXPANDER RELEASE
EXPANDER RATIO
FILTER THRESHOLD
FILTER RELEASE
FILTER CUT-OFF
STEREO MASTER
*MAPPED PARAMETER
"PROGRAMS 1-128
NOTES: “ACTUAL MIDI PROGRAM VALUE SENT 15 0-127, CORRESPONDING TO PRESETS 1-128. OPTIONAL
IMPLEMENTATION OF PROGRAM MAPPING ALSO AVAILABLE. "CONTROLLER MAPPING AVAILABLE.
X=NO
0=YES
17
PECIFICATION
RFI Shielding: Meets FCC Class B computing device equipment requirements.
INPUT
Input Impedance
Max. Input Level
Input Jack
NOISE FLOOR
DYNAMIC RANGE
EFFECTIVE NOISE REDUCTION
ER NCY RESPONSE
OUTPUT
Max. Output Level
Output Impedance
Output Jack
MIDI IN NNE R
MIDI THRU CONNECTOR
P EQUIREMENT
DIMENSIÓN
NOTE: OdBu = 0.775V RMS
33KHz
+20dBu
1/4" RTS (T=+, R=-, S=GND)
Balanced or Unbalanced
Typ. -105dBu A-Weighted, Balanced
Typ -101dBu A-Weighted Unbalanced
Typ. -125dB, Balanced
Typ. -121dB, Unbalanced
Greater than 60dB
+ 1/4dB, 20Hz-20KHz (flat setting)
+20dBu
Less than 150 ohms
Balanced or Unbalanced
standard 5-pin DIN
standard 5-pin DIN
110/120VAC @ 50/60Hz
19" x 10" x 1-3/4"
18
FCC NOTICE
This equipment generates and uses radio frequency energy and if not installed and used properly,
that is, in strict accordance with the manufacturer's 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 product with respect to the receiver
-Move the product into a different outlet so that product 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, D.C. 20402
(Stock No. 004-000-00345-4)
MAINTENANCE
19
MAINTENANCE
This unit is designed to provide years of trouble-free service but requires careful handling. To
maintain this unit in proper working condition read the Safety instructions. If any problem is encountered
do not return the unit to your Dealer. Rocktron will accept full responsibility for all warranty repairs.
WARRANTY
All parts and workmanship of this Rocktron product are fully guaranteed to be free of defects under
normal use and service for a period of THREE years from date of purchase.
The warranty will remain in effect until the original expiration date, regardless of whether or not the
product is re-sold in the interim.
It is not required that you fill out a form for warranty registration. We would however, recommend
that the dated proof of purchase be retained througout the warranty period.
Any damage resulting from mis-use or failure to follow instructions and precautions as stated in the
product manual will void this warranty.
Should this Rocktron product require repair, Rocktron will assume responsibility for repair service.
Do not return the product to the dealer. Simply repack the unit, sending along a description of the problem
to: Rocktron Corporation, 2870 Technology Drive, Rochester Hills, Ml 48308. Ali shipping charges must
be fully prepaid.
This warranty is void if the original Serial Number has been altered or removed, or if this unit has
been altered in any way.
Rocktron Corporation reserves the right to make changes in design and/or improvements upon
their products without any obligation to include those changes in any products previously manufactured.
There is no other express warranty on goods covered by this agreement.
20
FACTORY PRESETS 1—20 PAR AMETEFe ==;
{REPEATED 21—128)
PRESETS mes — [ANA] Maceo | RE | ORANGE" | nhl | slide: | OEE
1. FLAT ON —70 ons 1.0 =-70 . 4 8.00 K
2. CD 1 ON —50 100 7.0 —55 ‚25 1.70 K
3, CD 2 ON — 45 055 12.0 —80 .08 1.00 K
4. TAPE 1 ON —45 ‚080 10.0 — 45 | .05 1.05 K
5. TAPE 2 ON —37 1.00 aa — 45 .05 1.45 K
6. TAPE 3 ON — 40 000 20.0 — 55 .20 .78 K
7. TAPE 4 ON —55 „300 3.8 —55 04 3.00 K
E. TAPE 5 ON — 48 .055 12.0 —B0 04 1.00 K
9. DIST. OFF — 35 ‚055 20.0 —80 07 3.05 K
10. CLEAN OFF —ES 8.00 10.8 —во „25 1.50 к
11. BASS OFF —55 „100 12.0 —57 .20 1.00 K
12. AMP OFF — 30 .055 20.0 —57 .04 .BO K
13. SNARE OFF —50 100 3.0 —80 25 3.00 K
14, KICK OFF —50 .450 5.0 —#0 75 1.50 K
15. CYMBAL OFF — 45 3.50 10.0 — 50 .75 200 к
16. REV 1 ON —45 4.80 20.0 — во „75 2.10 K
17. REV 2 ON — 55 10.00 2.8 — 80 4.00 5.10 K
18. GATE 1 ON —a .055 20.0 —50 04 во к
19. GATE 2 QFF —5 .200 17.0 -- 55 04 2.00 K
20. GATE 3 OFF —17 055 20.0 —55 .04 2.70 K
21
FORM # 141 - 9/89
PART NO. 098-0067