GFX50 TwoTone Guitar Amplifier with DSP

The Front Panel:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Channel A and B are independent of each other up to the DSP and CD inputs. The text below (#1–9) applies to both channels.

1.INPUT: Connect the output signal from your guitar here by means of a shielded instrument cable.

2.VOLUME: Use this control to set the clean channel’s output signal level.

3.CLEAN/OVERDRIVE: Use this switch to select the clean channel (switch in the out position) or the overdrive channel (switch depressed).

4.OD GAIN: Use this control to set the overdrive channel’s input sig- nal gain. This control works in conjunction with the level control (#8) to set the amount of distortion and the output signal level of the overdrive channel.

5.TREBLE: 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.

6.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.

7.BASS: Use this control to adjust the low frequency level of the out- put signal. This control has a range of 28dB of boost or cut at 40Hz.

8.OD LEVEL: Use this control to set the overdrive channel’s output signal level. (Works in conjunction with the gain control, #4.)

9.EFFECTS: Use this control to set the amount of DSP effects applied to the output signal.

10.DSP MODE: Use this control to select the type of digital signal pro- cessing effect(s) applied to the output signal. Each effect and its location is called out by the markings around the control. The effects are as described as follows:

BYPASS:

No effect

DELAY 1:

Short delay effect

DELAY 2:

Long delay effect

FLANGE:

Light flanging effect

CHO 1:

Slow chorus effect

CHO 2:

Fast chorus effect

CHO+REV:

Slow chorus effect with reverberation

REV 1:

Small room reverberation

REV 2:

Large hall reverberation

11.DSP LEVEL: Use this control to set the amount of digital effect applied to the output signal.

12:CD INPUTS LEVEL: Use this control to adjust the level of the signal applied to the the CD input jacks (#13).

13.CD INPUT JACKS: Use these jacks to connect the output of a CD or tape player to the amp. (The jacks are internally summed to cre- ate a mono signal.)

14.HEADPHONES: Use these jacks to connect one or two pairs of stereo headphones to the amplifier. When the headphones are used, the internal speaker is disconnected.

15.LED: This LED illuminates when the amplifier is on.

16.POWER: Use this switch to turn the amplifier on and off. The ampli- fier is on when the top of the switch is depressed; off when the bot- tom of the switch is depressed.

17.AC LINE CORD(rear panel, not shown): Plug this cord into a prop- erly wired, grounded, 120 volt, 60 cycle AC outlet. DO NOT attempt to defeat the ground connection of this power cord! If your ampli- fier was purchased outside of the United States, see the unit’s rear panel labeling for its power rating, and follow the above guidelines.

System

Block

Diagram:

CHANNEL A:

INPUT

VOLUME

OD

OD

GAIN

LEVEL

 

TREBLE MID BASS

CLEAN OVER-

DRIVE

CHANNEL B:

INPUT

VOLUME

OD

OD

GAIN

LEVEL

 

TREBLE MID BASS

POWER

AMP

 

MIX

EFFECTS

STAGE

 

DSP

 

LEVEL

 

MODE

 

CD

EFFECTS

INPUTS

 

 

LEVEL

SPEAKER

HEAD

PHONES

CLEAN OVER- DRIVE

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Crate Amplifiers owner manual GFX50 TwoTone Guitar Amplifier with DSP