Peavey 3120 manual Front Panel

Front Panel

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POWER SWITCH

This two-way toggle switch applies mains power to the unit. The amber power sta- tus lamp (3) will illuminate when this switch is in the ON position.

STANDBY SWITCH

This two-way toggle switch allows the amp to be placed in the STANDBY mode. In the STANDBY position the tubes stay hot but the amplifier is not operational. Switching to the ON position places the amp in active mode.

POWER STATUS LAMP

This indicator illuminates when mains power is being supplied to the amp.

MASTER VOLUME

This control sets the overall volume level of the amp. Once the desired balance between the three channels in the amplifier has been achieved, the entire output level of the unit can be increased or decreased by rotating this control. Clockwise rotation increases level; counterclockwise rotation decreases level.

TREBLE

This control, on both the Rhythm and Lead channels, varies the high frequency response of the amplifier. It is an active control (shelving type) and allows 15 dB of boost or cut.

MIDDLE

This control, on both the Rhythm and Lead channels, varies the mid frequency response of the amplifier. It is an active control (peak/notch type) and allows 15 dB of boost or cut.

BASS

This control, on both the Rhythm and Lead channels, varies the low frequency response of the amplifier. It is an active control (shelving type) and allows 15 dB of boost or cut.

8VOLUME

This control, on all three channels, sets the overall level of its respective channel.

9GAIN

This control, on both the Rhythm and Lead channels, controls the input volume level of the channel. Rotating this control clockwise will increase the amount of preamp distortion and sustain.

10CHANNEL ACTIVATION LEDs

These indicators signify which channel is active. Lead channel activation illuminates the red LED; Rhythm channel activation illuminates the yellow LED; and Clean chan- nel activation illuminates the green LED.

11TREBLE

This passive control regulates the high frequencies for the Clean channel.

12MID

This passive control regulates the mid frequencies for the Clean channel.

13BASS

This passive control regulates the low frequencies for the Clean channel.

14INPUT

This 1/4” jack is designed to accommodate most any guitar output signal. Input sig- nal gain can be adjusted by the GAIN (9) controls (Rhythm and Lead channels only).

15CHANNEL SELECT SWITCH

This three-position toggle switch allows selection between the amplifier’s three channels. LED (10) illumination indicates which channel is active. Channel switch- ing can also be accomplished by footswitch. See the FOOTSWITCH section of this manual for explanation of switch operation. The CHANNEL SELECT SWITCH must be set in the Lead position in order for the footswitch to operate properly.

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