3.1.1 Wiring
The input is a mono channel, and its interface is a 3.5mm stereo jack. Two
tracks are connected by the internal wiring. Do not use the mono channel jack,
or you will cause a short circuit and no sound to the input!
The output is also a mono channel, with two jacks: RCA jack, 3.5mm stereo
jack. This stereo interface also connects two channels in the device. Do not use
the mono channel jack, or you will cause a short circuit and no sound to the
output!
The external power is DC 12V ± 15%, you can directly use the 13.8V power of
the radio equipment to supply power for this.
3.1.2 Selec�on of input impedance
Reasonably select the high/low input impedance level for GNR1 according to
the audio output impedance of the device you are using. You may turn down
the output sound volume if you select it improperly.
3.1.3 Adjustment of input sound volume
You can adjust to the appropriate sound volume to keep a proper output sound
volume and distor�onless sound quality. You can adjust it in coopera�on with
the output sound volume. If the input audio amplitude is so high that the input
is overloaded, the CLIP indicator on the panel will be on, so you should turn
down the input sound volume at this �me.
3.1.4 Adjustment of output sound volume
The knob controls the output sound volume of the speaker and headphone.
You can adjust to an appropriate output sound volume without distor�onless
sound quality. If you need to use headphones to monitor the output, it is
recommended to turn the knob le� to the lowest sound volume, and then
insert the headphones to avoid damage to your hearing due to too loud sound.
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Do not use it under over-voltage! Do not directly power with 220VAC!
After inserting the headphone, the speaker output will be automatically cut off.
