User ’s Guide
GLX50
Dual Input Guitar Amplifier
with
Digital Signal Processing
TABLE OF CONTENTS:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
The Digital Signal Processor . . . . . . . . . . . . . . . . . . . . .3
The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5
Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . .7
Technical Specifications . . . . . . . . . . . . . . . . .back cover
IMPORTANT SAFETY INSTRUCTIONS
• READ, FOLLOW, HEED, AND KEEPALL INSTRUCTIONS AND WARNINGS.
• DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS.
• DO NOT USE THIS APPARATUS NEAR SPLASHING, FALLING, SPRAYING, OR STANDING LIQUIDS.
• CLEAN ONLY WITH LINT-FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS.
• ONLY CONNECT POWER CORD TO APOLARIZED, SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICALCODES AND
COMPATIBLE WITH VOLTAGE, POWER, AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS.
• PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON, PINCHED, OR STRAINED.
• UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME.
• ONLY USE ATTACHMENTS, ACCESSORIES, STANDS, OR BRACKETS SPECIFIED BYTHE MANUFACTURER FOR SAFE OPERA-
TION AND TO AVOID INJURY.
• THIS APPARATUS DOES NOT OPERATE NORMALLYAND REQUIRES SERVICE WITH ANY PHYSICAL DAMAGE FROM IMPACT OR
ANY EXPOSURE TO MOISTURE.
• SERVICE MUST BE PERFORMED BY QUALIFIED PERSONNEL.
• OUR AMPLIFIERS ARE CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS. CONTINUED EXPOSURE TO HIGH SOUND
PRESSURE LEVELS CAN CAUSE PERMANENT HEARING IMPAIRMENT OR LOSS. USER CAUTION IS ADVISED AND EAR PROTECTION IS RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"
“ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES.”
"REFERREZ-VOUS AU MANUAL D'UTILISATION"
EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DES SYMBÔLES GRAPHIQUES:
"DANGEROUS VOLTAGE"
“VOLTAJE PELIGROSO”
"DANGER HAUTE TENSION"
=
=
PRECAUCION
RIESGO DE CORRIENTAZO
NO ABRA
ADVERTENCIA: REDUCIR EL RIESGO DE FUEGO O CHOQUE ELÉCTRICO, NO LE EXPONE DE ESTE APARATO A LLUVIA O HUMEDAD. PARA
DISMINUOIR EL RIESGO DE CORRIENTAZO. NO ABRA LA CUBIERTA.
NO HAY PIEZAS ADENTRO QUE EL USARIO PUEDO REPARAR DEJE
TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS.
ATTENTION
RISQUE D'ELECTROCUTION
NE PAS OUVRIR
ATTENTION: POUR REDUIRE D'ELECTROCUTION NE PAS
ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST
REPRABLE PAR L'UTILISATEUR. POUR TOUTE REPARATION,
S'ADRESSER A UN TECHNICIEN QUALIFIE.
GLX50
Guitar Amplifier with Digital Signal Processing
The Digital Signal Processor:
Crate’s Digital Signal Processing offers eight exciting digital effects, accessible through the
DSP Mode control. The effects are described below .
Use the Mode control to select the effect and the Level control to mix in the desired amount of
each effect.
3
GLX50
Guitar Amplifier with Digital Signal Processing
Congratulations!
You are now the proud owner of the Crate GLX50 guitar amplifier. This unique amplifier
allows two players to play simultaneously, making it perfect for students, band practices,
and live performances. An easy to operate DSPsection lets you dial in a variety of digital
effects such as delay, flange, chorus and reverb. RCAinputs with a level control allow you
to play along with a compact disc, a tape, or a drum machine. The active electronic tuner
allows for perfect tuning and is switchable for use on either of the two channels.
Like all Crate products, your GLX50 amplifier is designed by musicians, and built using only
the best components. Extensive testing confirms that this amplifier is the absolute best it can be.
In order to get the most out of your new amplifier, we strongly urge you to read the information contained in this manual before you begin playing.
And thank you
for choosing
1
Bypass - no effect
2
Delay 1 - short delay effect
3
Delay 2 - long delay effect
4
Flange - light flanging effect
5
Chorus 1 - slow chorus effect
6
Chorus 2 - fast chorus effect
7
Chorus + Reverb - slow chorus with reverberation
8
Reverb 1 - small room reverberation
9
Reverb 2 - large hall reverberation
The Front Panel:
4
1 3 5 6 7 8 9 1042
NOTE: Channel Aand Channel B are independent of each other up to the DSP and CD inputs.
The text below (#1–10) applies to both channels.
1. INPUT: Use this 1/4” jack to connect your guitar to the amplifier by means of a shielded instrument cable.
2. TUNER A / TUNER B: Use this switch to assign the electronic tuner (#16) to Channel A (switch
in the out position) or Channel B (switch depressed).
3. CLEAN: Use this control to adjust the output level of the Clean channel.
4. CLEAN / OVERDRIVE: Use this switch to select the Clean channel (switch in the out position) or
the Overdrive channel (switch depressed).
5. OD GAIN: Use this control to adjust the Overdrive channel’s input signal gain. This control works
in conjuntion with the OD Level control (#9) to set the amount of distortion and the output signal level
of the Overdrive channel.
6. HIGH: Use this control to adjust the high frequency level of the output signal. This control has a
range of 27dB of boost or cut at 12kHz.
7. MID: Use this control to adjust the midrange frequency level of the output signal. This control has
a range of 20dB of boost or cut at 1.5kHz.
8. LOW: Use this control to adjust the low frequency level of the output signal. This control has a
range of 28dB of boost or cut at 40Hz.
9. OD LEVEL: Use this control to adjust the Overdrive channel’s output signal level. This control
works in conjunction with the OD Gain control (#5).
10. EFFECTS: Use this control to adjust the amount of digital effects applied to the output signal.
GLX50
Guitar Amplifier with Digital Signal Processing
5
11 12 13 14 1815 1716
11. DSP MODE: Use this control to select one of the eight built-in digital effects. Alisting of the effects is
printed below the control knob. Abrief description of these effects is shown on page 3 of this manual.
12: DSP LEVEL: Use this control to adjust the output level of the digital effect: in its fully counter-
clockwise position the signal will be “dry” (without any effect). As you rotate the control clockwise the
amount of effect increases.
13. CD INPUT LEVEL: Use this control to adjust the input level of the signal from the CD Input jacks
(#14).
14. CD INPUT JACKS: Use these jacks to connect the output of a CD player, tape deck or drum
machine to the amplifier. The jacks are internally summed to create a mono signal.
15. HEADPHONES: Use these jacks to connect one or two pairs of stereo headphones to the amplifier. Each Headphones jack monitors the signal from both Channel A and Channel B. The internal
speaker is disconnected when the Headphone jacks are used.
16. ELECTRONIC TUNER: The electronic tuner is active whenever the amplifier is turned on, providing constant, “real-time” tuning. The bottom row of LEDs indicate which note (string) is being
tuned. The top row of LEDs provides directional queues to facilitate quick and precise tuning of your
instrument. The indicated note (string) is properly tuned when only the center LED is illuminated.
17. LED: This LED illuminates when the amplifier is on.
18: POWER: Use this switch to turn the amplifier on (top of the switch depressed) and off (bottom of
the switch depressed).
GLX50
Guitar Amplifier with Digital Signal Processing
Suggested Settings:
6
GLX50
Guitar Amplifier with Digital Signal Processing
CRYSTAL CLEAN:
PUNCHY CLEAN:
DIRTY PUNCH:
OUT
OUT
IN
DIRTY BLUES:
EDGIE:
SWEATY METAL:
ARENA METAL:
MAMMOTH METAL:
IN
IN
IN
IN
IN
System Block Diagram:
7
GLX50
Guitar Amplifier with Digital Signal Processing
CHANNEL A:
INPUT
LEVEL
TUNER
A BC D EF G
CHANNEL B:
INPUT
CLEAN
LEVEL
CLEAN
OD
GAIN
OVERDRIVE
OD
GAIN
OVERDRIVE
OD
LEVEL
OD
LEVEL
HIGH MID LOW
HIGH MID LOW
EFFECTS
DSP
LEVEL
MODE
EFFECTS
CD
INPUTS
LEVEL
MIX
STAGE
POWER
AMP
SPEAKER
HEAD
PHONES
GLX50 TECHNICAL SPECIFICATIONS:
Output Power Rating 50 watts RMS @5% THD, 4 ohm load
Maximum Input Signal Accepted 5 volts peak-to-peak
Total System Gain Clean Channel 70dB, all controls @10
Overdrive Channel 110dB, all controls @10
Input Impedance 270k ohm
Tone Controls Low 28dB range @ 40Hz
Mid 20dB range @ 1.5kHz
High 27dB range @ 12kHz
CD Inputs Maximum signal level 7.75V rms
Headphones Minimum impedance 32 ohms
Internal Speaker 12” Crate Custom, 4 ohms, 1.5” voice coil,
30 oz. magnet
Input Power Requirements 120 VAC, 60Hz, 75VA
100/115VAC, 50/60Hz, 75VA
230VAC, 50/60Hz, 75VA
Size and Weight 19” H x 19-3/8” W x 9-1/2” D, 28 lbs.
The GLX50 is covered with a durable Tolex material: wipe it clean with a lint-free cloth.
Never spray cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish.
Crate continually develops new products, as well as improves existing ones. For this reason, the specifications
and information in this manual are subject to change without notice.
www.crateamps.com
@2002 SLM Electronics, a division of St. Louis Music, Inc • 1400 Ferguson Avenue • St. Louis, MO 63133
47-383-01 • 110402
GLX50
Guitar Amplifier with Digital Signal Processing
Declaration Of Conformity
#33, Effective 01-01-2001
Manufacturer’s Name: SLM Electronics
Production Facility: 11880 Borman Drive, St. Louis, MO 63146, USA
Production Facility: 700 Hwy 202 W, Yellville, AR 72687, USA
Shipping Facility: 1400 Ferguson Ave., St. Louis, MO 63133, USA
Office Facility: 1400 Ferguson Ave., St. Louis, MO 63133, USA
Product Type: Audio Amplifier
Complies with Standards:
LVD: 92/31/EEC, 93/68/EEC, & 73/23/EWG
Safety: EN60065
EMC: EN55013, EN55020, EN55022, EN61000-3-2,
& EN61000-3-3
Supplementary information provided by:
SLM Electronics - R & D Engineering
1901 Congressional Drive, St Louis, MO 63146, USA
Tel.: 314-569-0141, Fax: 314-569-0175
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