Nady Systems GTH-100 - Manual (Page 5)

5
F R O N T C O N T R O L S A N D C O N N E C T I O N S
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1. POWER SWITCH
This switch turns the main power on and off. Flipping
the toggle switch up to the ON+ position will turn on the
amp “in phase” with the main AC line voltage. Flipping
the switch down to the ON- position will reverse the
polarity. In some cases, AC hum (caused by ground
loops) can be reduced by reversing the polarity. Select
the On position which has the least amount of AC hum.
2. POWER INDICATOR LIGHT
Lights when the unit is powered on.
3. HI / STBY / LO SWITCH
Flipping this toggle switch to the STBY position will
respectively disable the audio to the amplifier and the
outputs and put the amp in standby mode. This allows
for proper warm-up of the tubes before applying signal to
them, and allows the amp to stay warm when not in
immediate use. To extend the life of the tubes, always
turn the Main Power Switch on first, for 1-2 minutes,
before flipping the Standby Switch to LO or HI. Set the
switch to LO, which will enable audio with a maximum of
30W RMS output power, if the highest volume is not
necessary, or, if you want to achieve more distortion at
the output tubes. Flipping the switch to HI will enable
audio to the amplifier with a maximum 100W RMS
output.
4. HIGH INPUT JACK
Input for instrument outputs like passive guitar outputs,
keyboard, mics for harmonicas, and other effects
devices.
5. LOW INPUT JACK
The Low Input Jack has a pad with approx 9dB with
lower gain than the High Input Jack. This should be
used with higher level electronic devices or to achieve
more range from the gain controls before distortion.
6. DISTORTION SELECTOR
This three-way switch selects the input sensitivity and
amount of overdrive distortion. Position 1 offers the
cleanest signal with least amount of distortion. Position
3 has the maximum amount of distortion.
Note: The VOLUME and MASTER controls also affect
the final signal level and the amount of distortion.
• For cleanest operation (least distortion) adjust the
VOLUME to a very low setting, the MASTER to
maximum, and the DISTORTION to Position 1.
• For medium distortion (or crunch) adjust the
VOLUME to past the mid position, the MASTER to
mid, and the DISTORTION to Position 2.
• For maximum distortion adjust the VOLUME to
maximum, the MASTER to a very low setting, and
the DISTORTION to Position 3.
7. VOLUME CONTROL
This adjusts the level of the input signal to the amp.
Increasing this level will create distortion dependent on
the DISTORTION SELECTOR setting.
8. MASTER VOLUME CONTROL
Adjusts overall loudness of the amp.
9. TREBLE CONTROL
Adjusts the level of treble/Hi frequencies.
10. MID CONTROL
Adjusts the level of mid-range frequencies.
11. BASS CONTROL
Adjusts the level of bass frequencies.
12. PRESENCE CONTROL
Adjusts the high overtones, texture, and feel of the amp.
13. REVERB CONTROL
Adjusts the level of reverb mixed with the dry signal.
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