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ZOOM G9.2tt
76
Troubleshooting
■ No sound or very low volume
• Make sure that the POWER switch is on.
• Try adjusting the LEVEL knob.
• Make sure that the INPUT jack and the
guitar, and the OUTPUT L/MONO (or
OUTPUT R) jack and the guitar amp are
connected properly.
• Make sure that the shielded cable is not
defective.
• Try adjusting the patch level (→ p. 16).
• Make sure that the G9.2tt is not in mute
condition (→ p. 21).
• For some patches, the volume can be
adjusted with an expression pedal. Make
sure that a suitable volume setting has been
selected with the pedal.
• When both controls in the Accelerator
section are fully turned down, there will be
no sound. You must turn at least one control
partially up.
■ Sound is distorted
• Try lowering the Gain and Level parameters
of the PRE-AMP module.
• Try lowering the setting of the [TUBE]
control and [BOOST] control in the
Energizer section.
• Try lowering the setting of the [TUBE]
control in the Accelerator section.
■ Foot switches do not operate properly
• Check the setting of function foot switches
1/2 (→ p. 38).
• Check the current operation mode. The foot
switch action is different in play mode and
manual mode.
■ Sound in bypass condition is strange
• Try lowering the setting of the [TUBE]
control and [BOOST] control in the
Energizer section.
The Energizer operates also in the bypass
condition.
• Set the [TUBE] control in the Accelerator
section to a setting lower than 3 o'clock.
The Accelerator operates also in the bypass
condition.
■ Noise is noticeable
• Make sure that only a ZOOM AC adapter is
used.
• Adjust the ZNR setting.
• Move around the room to check for RF noise
in relation to the pick ups, etc.
• Try lowering the Gain and Level parameters
of the PRE-AMP module.
• Check the settings of expression pedals 1/2
(→ p. 33 – 35).
Depending on the parameter assigned to
expression pedals 1/2, a pedal action causing
drastic parameter change may result in noise.
■ Cannot send or receive MIDI messages
• Make sure that the MIDI IN connector of the
G9.2tt and the MIDI OUT connector of the
other MIDI device, and the MIDI OUT
connector of the G9.2tt and the MIDI IN
connector of the other MIDI device are
connected properly.
• Check the MIDI channel setting (→ p.43).
• Check whether send/receive of the respective
type of MIDI message is enabled
(→ p. 44, 47).
■ On/off switching with expression pedal
does not work properly
• Verify that parameter 4 (module on/off) for
expression pedal 1 (P1-1 to P1-4) or the
vertical direction of expression pedal 2
(P2V1 to P2V4) in the TOTAL module is set
to "Enable" (→ p. 33, 34).
• The module on/off function is not available
for pedal 2, horizontal direction setting
(P2H1 to P2H4).(→ p. 34).
ZOOM G9.2tt
77
Specifications
Number of effect types 106
Number of effect modules 10 simultaneously usable modules
Patch memory User area : 5 patches x 20 banks = 100 (read/write enabled)
Preset area : 5 patches x 20 banks = 100 (read only)
Total: 200 patches
Sampling frequency 96 kHz
A/D conversion 24-bit, 64-times oversampling
D/A conversion 24-bit, 128-times oversampling
Signal processing 32-bit
Frequency response 20 Hz - 40 kHz +1.0 dB, -3.0 dB (10 kilohm load)
Display 2-digit 7-segment LED display
16-digit 2-line backlit LCD
Inputs
Guitar input Standard monaural phone jack
Rated input level: -10 dBm
Input impedance: 1 megohm
AUX input Mini phone jack (stereo)
Rated input level: -10 dBm
Input impedance: 10 kilohms
External Return Standard mono phone jack
Rated input level: -10 dBm/+4 dBm (switchable)
Outputs
Line output Standard monaural phone jack x 2
Rated output level: -10 dBm/+4 dBm (switchable)
Maximum output level: +19 dBm (into load impedance of 10 kilohms or
more)
Output impedance: 1 kilohm or less
Headphone output Standard stereo phone jack
Rated output: 60 m W (into 32-ohm load), 20 m W (into 300-ohm load)
Output impedance: 47 kilohm
External Send Standard mono phone jack
Rated output level: -10 dBm/+4 dBm (switchable)
Tube circuitry 12AX7 x 2
Control connectors MIDI OUT, MIDI IN
USB interface
PC interface 16-bit (record/play, stereo)
Sampling frequencies 32 kHz, 44.1 kHz, 48 kHz
Power requirements 15 V AC, 1.5 A (from supplied AC adapter AD-0012)
Dimensions 235 (D) x 595 (W) x 85 (H) mm
Weight 5.5kg
* 0 dBm = 0.775 Vrms
* Design and specifications subject to change without notice.