Crate Gfx-15 User manual

OWNER’S MANUAL

www.crateamps.com

P/N 47-453-01 • 06/98

GFX-15 Amplifier

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Congratulations!

You are now the proud owner of the Crate GFX-15 guitar amplifier. This small but

versatile amplifier features two separate channels – one crystal clear and the other with

our patented “Flex-Wave” distortion – combined with a three-band EQ and an easy to

operate DSP section which lets you dial in a variety of digital effects such as delay,

flange, chorus and reverb.Aspecial damping circuit simulates the “current source” type

output of a tube amp, giving you solid state reliability combined with classic tube

sounds.

Like all Crate products, your GFX-15 is Musician Made in the U.S.A., using only the

best components. Extensive testing at the hands (and ears) of skilled technicians and

musicians insures you 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 go over

the information contained in this manual before you begin playing.

And thank you for choosing

Crate continually develops new products, as well as improves existing ones. For this reason, the

specifications and information in this Crate manual are subject to change without notice.

Output Power Rating 12 watts RMS @ 5% THD 4 ohms, 120VAC

Gain, Overdrive Channel 86dB +/-6dB @ 1kHz

Gain, Clean Channel 46dB +/-6dB @ 1kHz

Tone Control Range, Low 25dB @ 80Hz

Tone Control Range, Mid 19dB @ 900Hz

Tone Control Range, High 23dB @ 5kHz

Signal To Noise, Overdrive Channel >50dB

Signal To Noise, Clean Channel >65dB

Maximum Signal Accepted 2.2 volts RMS min. @ 400Hz

Internal Speaker 8” Crate Custom Design 4 ohm

Input Power Requirements 120 VAC, 60Hz, 30VA

100/115VAC, 50/60Hz, 30VA

230VAC, 50/60Hz, 30VA

Size and Weight: 13” H x 13.63” W x 8.25” D, 15 lbs.

The GFX-15 is covered with a durable black Tolex material: wipe it

clean with a lint-free cloth. Never spray cleaning agents onto the

cabinet. Avoid abrasive cleansers which could damage the finish.

GFX-15 TECHNICAL SPECIFICATIONS

THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PROVIDE SAFEAND RELIABLE OPERATION. IN ORDER TO PROLONG THE LIFE OF THE

UNIT AND PREVENT ACCIDENTAL DAMAGES OR INJURY, PLEASE FOLLOW THESE PRECAUTIONARY GUIDELINES:

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN CHASSIS; DO NOT DEFEAT OR REMOVE THE GROUND PIN OF THE POWER

CORD; CONNECT ONLY TO A PROPERLY GROUNDED AC POWER OUTLET.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

CAUTION: NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

CAUTION: 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

CAUTION: 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"

"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"

EXPLANATION OF GRAPHICAL SYMBOLS:

EXPLICACION DE SIMBOLOS GRAFICOS:

EXPLICATION DES SYMBÔLES GRAPHIQUES:

"DANGEROUS VOLTAGE"

“VOLTAJE PELIGROSO”

"DANGER HAUTE TENSION"

"GEFAHLICHE SPANNUNG"

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.

VORSICHT

ELEKTRISCHE SCHLAGGEFAHR

NICHT OFFENEN

VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT

DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM

BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM

WARTUNGSPERSONAL ZU UBERLASSEN.

GFX-15

GUITAR AMPLIFIER WITH

DIGITAL SIGNAL PROCESSING

1: INPUT: Connect your guitar here using a

shielded instrument cable.

OVERDRIVE CHANNEL: A high gain chan-

nel giving you sounds from a slight edge to

serious overdrive.

2: GAIN: This control sets the amount of

compression and distortion from the amplifi-

er. With the control towards far left, the

sound will have a thick compressed quality.

As you turn the control to the right the

amount of distortion increases. Crate’s

exclusive “Flex-Wave” circuitry uses sequen-

tial cascading gains to deliver distortion

which is rich in harmonics and “touch sensi-

tive.” Use this control along with the Level

(#3) to create a wide variety of sounds.

3: LEVEL: This control sets the output vol-

ume level from the Overdrive channel: in the

far left position there will be no output; as you

turn the control to the right the output

increases. Use this control along with the

Gain control (#2) to create a wide variety of

sounds.

4: OVERDRIVE SELECT: When this push-

button switch is pressed in the Overdrive

channel is engaged. The clean channel is

selected when this switch is out.

CLEAN CHANNEL: A normal gain channel

designed to give you crystal clear sounds to

medium distortion.

5: LEVEL: This control sets the output vol-

ume level from the Clean channel: in the far-

left position there will be no output; as you

turn the control to the right the output level

increases. The far right setting is maximum

output - as you increase the level, roll back

the Low control (#6).

EQUALIZATION

6: LOW: Adjust the low frequency output

level with this control: turning the control to

the left reduces the low frequency output;

turning it to the right increases the low fre-

quency output. The Low control allows a

total range of 25dB of boost or cut at 80Hz.

Due to the massive amount of low end avail-

able, you may want to “roll off” the bass at

high volumes.

7: MID: Adjust the mid frequency output

level with this control: the center position is

“flat” (no boost or cut). Turning the control to

the left reduces the midrange output; turning

it to the right increases the midrange output.

The Mid control allows for 19dB of boost or

cut at 900Hz.

8: HIGH: Adjust the high frequency output

level with this control: in the center position

the high frequency output will be “flat” (no

boost or cut). Turning the control to the left

reduces the high frequency output; turning it

to the right increases the high frequency out-

put. The High control allows a total range of

23dB of boost or cut at 5kHz.

GFX-15 Amplifier

9: DSP MODE: Select the type of digital

effect(s) desired with this control. Each cat-

egory and its central location is called out

(delay, flange, etc.) by the markings around

the control, with variations, as follows:

• Bypass (DSP off)

• Slapback delay

• Long delay w/regeneration

• Flange

• Slow Chorus

• Fast Chorus

• Chorus w/small room reverb

• Small room reverb

• Large room reverb

10: HEADPHONES: For private practice

sessions, plug a pair of stereo headphones

into this jack. The internal speaker is discon-

nected whenever headphones are being

used.

11: EXTERNAL SPEAKER*: You may con-

nect the GFX-15 to an external speaker with

a rated impedance of at least 4 ohms using

this jack. The internal speaker is disconnect-

ed whenever an external speaker is used.

12: ON LED: The on LED will glow when

you turn on the GFX-15, showing you that

the amplifier is activated and ready to play.

13: POWER: This heavy-duty rocker-type

switch is used to turn the amplifier ON in the

up position, off in the down position. The ON

LED (#12) works with this switch as a visual

indicator.

14: POWER CORD: (Rear panel, not

shown: This heavy-duty, grounded, three-

wire power cord is to be plugged into ONLY

a safely-wired, grounded 120 volt, 60 cycle

AC power outlet. DO NOT attempt to defeat

the ground connection of this cable! If your

GFX-15 was purchased outside the United

States, see the unit’s rear panel for its power

rating and follow the above guidelines.

1 2 3 4 6 7 8 10 11 12 135 9

*WARNING:

DO NOT attempt to

use headphones in

the Speaker jack!

Permanent hearing

damage could result!

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