R50DSP
ELECTRIC GUITAR AMPLIFIER WITH
AGX TECHNOLOGY AND
BUILT-IN DIGITAL EFFECTS
User’s Manual
May be covered by one or more of the following: U.S. Patents #4538297, 4647876, 4696044, 4745309, 4881047, 4893099,
5124657, 5263091, 5268527, 5319713, 5333201, 5402498 and 5493617.
Other patents pending. Foreign patents pending.
Your Rocktron Rampage R50DSP amplifier has been tested and complies with the following Standards
and Directives as set forth by the European Union:
Council Directive(s): 89/336/EEC, 73/23/EEC
Standard(s): EN55022, EN50082-1, EN60065
This means that this product has been designed to meet stringent guidelines on how much RF energy it
can emit, and that it should be immune from other sources of interference when properly used.
Improper use of this equipment could result in increased RF emissions, which may or may not interfere
with other electronic products.
To insure against this possibility, always use good shielded cables for all audio input connections. This
will help insure compliance with the Directive(s).
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.
• The power cord should be unplugged from the outlet when left unused for a
long period of time.
DO NOT ATTEMPT TO SERVICE THIS EQUIPMENT. THIS EQUIPMENT SHOULD
BE SERVICED BY QUALIFIED PERSONNEL ONLY. DO NOT MAKE ANY
INTERNAL ADJUSTMENTS OR ADDITIONS TO THIS EQUIPMENT AT ANY TIME.
DO NOT TAMPER WITH INTERNAL ELECTRONIC COMPONENTS AT ANY TIME.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY VOID THE WARRANTY OF
THIS EQUIPMENT, AS WELL AS CAUSING SHOCK HAZARD.
OPERATING TEMPERATURE
Do not expose this unit to excessive heat. This unit is designed to operate between 32° F and
104° F (0° C and 40° C). This unit may not function properly under extreme temperatures.
Copyright © 2002 GHS Corporation
All Rights Reserved.
Front Panel
1
INPUT JACKS - LOW AND HIGH
Connect the output of your guitar to one of the 1/4”input jacks with a shielded guitar cable. Select
LOW for normal, or HIGH for extra gain. Plugging into the LOW input will attenuate your guitar’s
signal cooling down a “hot” guitar. These two jacks provide slightly different input levels. Experiment with these and adjust to your tastes.
CLEAN Section
2
- GAIN Control Knob - Turning this knob clockwise determines the amount of gain (or distortion) added to the signal. A wide range
of amp tones are available from Pristine clean to Heavy Texas Blues
- LEVEL Control Knob - Turning this knob clockwise determines the overall volume of the CLEAN channel.
CH SELECT Button & CL & OD LEDS
3
Channel Select button - allows you to select between the CL (CLEAN) channel or the OD (OVERDRIVE) channel. When the CL LED is ON (or lit) the Clean Channel is active. When the OD LED
is ON (or lit) the OVERDRIVE Channel is active.
4
OVERDRIVE Section
- GAIN Control Knob - Turning this knob clockwise determines the amount of gain (or distortion) added to the signal. A wide range
of amp tones are available on this channel from Classic American Rock to Heavy Metal.
- LEVEL Control Knob - Turning this knob clockwise determines the overall volume of the OVERDRIVE channel.
TREBLE/MID/BASS controls
5
Tone controls or EQ. The BASS control boosts or cuts the amount of low frequency, or bass sound.
TREBLE does the same for high frequencies, MID adjusts the midband frequencies.
PRESENCE control
6
This master PRESENCE control tailors the overall high fequency at of the EQ section.
DIGITAL EFFECTS section
7
Built-in digital effects custom voiced for Rampage amplifiers. Please see “Digital Effects” section in
this manual for more descriptions of each sound and control operation.
SPEAKER SIM Button
8
Speaker Simulator - Press this button to engage the Speaker Simulator. This button has two functions
1) When using headphones or the line out jack on the back panel engage the Speaker Simulator for a
“model” of the internal speaker - this is ideal for direct recording or jamming along with CDs or tapes
in the headphones.
2) Engaging the Speaker Sim when you are NOT using headphones or the line out will provide a
“creamier” tone to the EQ section. Experient with this and select different pickups on your
guitar...there is a wide range of tones available.
PHONE (HEADPHONE) jack
9
Plugging your headphones into this jack disconnects the sound going to the speakers and allows you to
practice in private. Engage the Speaker Sim Button (Point 8) for a “model” of the internal speaker.
NOTE - When using with CD inputs be sure to turn the Levels down on both channels before
unplugging headphones - see CD INPUT section next page.
10
POWER switch & LED
Turns the amp ON and OFF. When the LED is lit, the amp is on.
Digital Effects Section
1
EFFECTS MIX Control
This control allows you to adjust how much effect is added to the signal. For louder effects - turn the
knob towards the “WET” setting. For less or softer effect - turn the knob towards the “DRY Setting.
2
EFFECTS SELECT Control
This control allows you to select 8 different effect presets that have been custom made for guitar
players. There are several different effects ranging from Chorus, Delays, Tremolo and Reverb and
various combinations of those in the most popular configurations.
EFFECT
CRS REV2
ARENA
HALL
TREM REV
CRS DLY1
DESCRIPTION
MEDIUM RATE CHORUS and STADIUM REVERB
HEAVY METAL MADNESS PRESET
LONG DECAYING REVERB with LIGHT EARLY REFLECTIONS
CLEAN SLOW SONG PRESET
SHORT DECAYING REVERB with HEAVY EARLY REFLECTIONS
HEAVY ROCK AMBIENT PRESET
MEDIUM DECAYING REVERB passing thru MEDIUM RATE TREMOLO
A KILLER SURF TONE PRESET
SLOW RATE CHORUS with 232 ms DELAY light REGENERATION
80’s METAL PRESET
CRS REV1
CRS SLAP
ECHO
SLOW RATE CHORUS and STADIUM REVERB
ROCK PRESET - GOOD FOR CLEAN AND DISTORTION - ACOUSTIC
SLOW RATE CHORUS with 90ms DELAY light REGENERATION
COUNTRY CHICKEN PICKING PRESET/50’S STYLE PRESET
592ms LONG DELAY with heavy REGENERATION
MAJESTIC WAILING SOLO PRESET
Back Panel
POWER INLET Module
1
The Power Inlet module accepts the detachable power cord included with the unit.
SPEAKER OUTPUT Jacks - Right & Left
2
Used to connect additional speaker cabinets if desired. The R50DSP will drive a 4x12 and sounds
awesome. Connect only one additional 8 ohm cabinet per jack. Do not connect more than one per
jack or you will damage your amp!
PREAMP OUT - TO EXT POWER AMP
3
This 1/4” jacks allows you to connect to a seperate powered speaker cabinet or directly into a power
amp - like the Rocktron Velocity 100 and from the power amp into two 4x12s, a stereo 4x12 or a
stereo 2x12 cabinet. The preamp output is controlled by the master volume control.
LINE OUT - TO RECORDING DEVICE
4
This 1/4” jack allows you to connect to a PA system or recording device. The Speaker Simulator is
always engaged for the best sound. You may also run the signal out to a power amp with volume
controls and from there into a speaker cabinet. This output is ideal for direct connection to a PA
system for live performances....it eliminates the need to use a microphone with the PA. The line
output is not controlled by the master volume control.
CHAN/EFX FOOTSWITCH (Footswitch) Jack
5
To control CHANNEL selection, plug a single footswitch* into this jack. To control CHANNEL
Selection and DIGITAL EFFECTS ON/OFF, use a double footswitch* with a stereo 1/4” jack.
CD INPUTS
6
These two RCA jack inputs allow for a direct connection by a CD player or Tape player to the amplifier. You can then jam along with CDs or tapes to rehearse songs, learn new songs or just for fun!
Warning!!! When using Headphones with the CD inputs - make sure you turn down the
Levels on both channels BEFORE unplugging headphones - otherwise excessive CD volume
will be produced.
* Rocktron Rampage single (RFS1) and double (RFS2) footswitches are available and sold
separately.
R50DSP Specifications
Power Output
Speakers
EQ Treble
Middle
Bass
Outputs: Line
Preamp
Headphone Output
Speaker Outputs
Channels
Effects
Dimensions
40 Watts (20 watts per side)
2 x 8” Velocity High Definition by Rocktron
Passive Shelving
Passive Bandpass
Passive Shelving
1/4” jack
1/4” jack
1/4” Stereo jack
2 x 1/4” - 8 ohms max per jack
Overdrive and Clean (Footswitchable)
Digital (Footswitchable)
15”H x 20.9” W x 9.8”D (381 x 530 x 250 mm)
Weight
Power Requirements
26.16 lbs. (12kg.)
100 Volts AC 50/60Hz or 117 Volts AC, 50/60Hz
or 220/240 Volts AC, 50/60Hz, as specified on chassis
AGX (Automatic Gain Expander)
Rocktron’s patented AGX system solves the long standing problem encountered by guitar players
when using high gain distortion. The AGX circuit expands the gain of the amplification circuit only
when required based on the input level. When no signal is present, the AGX circuit expands down the
amplification level to a point where hum and noise are dramatically reduced.
Check out some of our other products:
Rack Gear:
Gainiac (preamp w/12ax7 tube) Chameleon 2000 (preamp w/multi-effects)
Voodu Valve (preamp w/12ax7 tube and multi-effects)
Prophesy (our top of the line preamp with multi-effects)
Intellifex On Line (Multi-effects processor) HUSH Super C (guitar noise silencing system)
Vendetta VP4 Preamp (All Tube 4-Channel Guitar preamp - 2 Rack Space)
Stomp Boxes:
Rampage Distortion, Tsunami Chorus, Austin Gold Overdrive,
HUSH The Pedal, Banshee Talkbox, Vertigo Vibe
Electric Guitar - Acoustic Guitar and Bass Amplifiers:
Vendetta Head(100 W Head 4-Channels All Tube - MIDI Switchable)
Vendetta Combo (100W 2x12 Combo - Celestion 90’s all Tube -4-Channel - MIDI Switchable)
R80DSP (80W 1x12 Amp w/Digital Effects)
RT122C (120W 2x12 Amp w/Stereo Chorus, Reverb & Chromatic Tuner)
R120DSP (120 Watt 2x10"Guitar Amp w/Digital Effects)
R50C (40 Watt 2x8"Guitar Amp w/Reverb & Chorus)
R20 (20 Watt 1x8"Amp w/Reverb) R10 (10 Watt 1x6.5")
RA50DSP (50W Acoustic Amp w/Digital Effects - Wedge Shape)
RA30DSP (30W Acoustic Amp w/Digital Effects - Wedge Shape)
RB20 (Basss Amp 20W with 8" Speaker) RB30 (Basss Amp 30W with 10" Speaker)
RB60 (Bass Amp 60W with 12" Speaker) RB100 (Basss Amp 100W with 15" Speaker)
Foot Controllers:
MIDI Mate (Midi Foot Controller) MIDI XChange (MIDI Footcontroller)
All Access (Midi Foot Controller RMM900(7-pin Din MIDI Cable)
RFS1 and RFS2 (Single and Double Latching Footswitchs for Rampage Amps)
Speaker Cabs:
S112 (1x12 Voiced Guitar Cab) Vendetta 4x12s( Slant & Straight w/ Celestion 30s)
R50DSP
ELECTRIC GUITAR AMPLIFIER WITH
AGX TECHNOLOGY AND
BUILT-IN DIGITAL EFFECTS
Rocktron -A Division of GHS Corporation
2813 Wilber Avenue
Battle Creek MI 49015
USA
Rocktron Phone: 1-(269)-968-3351
Email: info@rocktron.com
2002-0002
Rev. 10/2/02
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