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.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