Peavey 12 D manual Input 2 B, Front Logo LED Switch, GAIN, Present on Both Input 1 and Input 2 13

INPUT 2 (B)

Input 2 is switchable between line-level gain and mic-level gain. The line-level input is medium impedance balanced. The input 2 jack (8) is a combo female XLR and 1/4” TRS connector. Input 2 also has a pair of RCA phono jacks (10) wired in parallel with the above listed inputs. These are mixed in parallel with each other and are Mono inputs (not stereo inputs). The signal to input 2 is mixed with the signal from input 1 and fed to the internal crossover and signal processing.

MIC/LINE SWITCH, PRESENT ON BOTH INPUT 1 AND INPUT 2 (5,6)

Switches the sensitivity of the input from line-level to mic-level sensitivity. Pushed in, the sensitivity is set for line-level input signals. When the switch is not pushed in, the sensitivity is increased by 30 dB so it is suitable for mic-level signals. Note that this switch changes the input’s sensitivity, but does NOT provide phantom power, thus the microphone used must be a dynamic type microphone.

MIC/LINE SWITCH LED, PRESENT ON BOTH INPUT 1 AND INPUT 2 (11,12)

Illuminates green when Mic/Line switch (5 and/or 6) is in line-level mode, and red when the Mic/Line switch is in mic-level mode.

GAIN, PRESENT ON BOTH INPUT 1 AND INPUT 2 (13, 14)

Controls the gain (level) of the input channel with which it is associated. It is used to directly set the system output level for a given input signal.

SIGNAL / CLIPPING LED, PRESENT ON BOTH INPUT 1 AND INPUT 2 (15,16)

These are located to the right and down from the GAIN knob for each input channel. It is off, or dark, when no signal is applied to that input. It flickers green in time with the music when a signal is applied, getting brighter with increased signal output. It turns red when either of the power amps clip or when the input channel is overloaded.

FRONT LOGO LED SWITCH (17)

This 3-position slide switch (17) provides a means to alter the signal information indicated by the front logo LED. The front LED indicator is incorporated into the logo on the woofer grille and normally glows blue for two of the three Front LED Switch positions.

With the switch in the “off” position (to the far right), the front LED is turned off. This setting can be useful when the light of the LED causes an artistic disruption.

With the switch in the “signal” position (in the middle), the front logo LED is blue when power is applied to the powered speaker electronics, and flashes red when the amplifiers are clipping. In this position, if the amplifier goes into protection mode, the front logo LED will stay red until the amplifier comes out of protection. The front logo LED is the only indicator that provides an indication of amplifier protection mode on the Impulse® 12D.

This switch position is recommended for use in permanent installations to maximize the information available to the system operating personnel.

With the switch in the “power” position (to the far left), the front LED is blue when power is applied to the powered speaker electronics, but does not change color when the speaker’s power amplifiers are clipping.

DYNAQ™ SECTION (C)

The DynaQ section provides for a variety of tone shaping options or the selection of a nominally flat response. The Music/Speech switch (18) provides a dynamic treble boost that is signal level dependant (Fletcher-Munson type compensation) when in the "Music" or “out” switch position. When in the "Speech" or “in” switch position, the Treble boost is turned off, as is any Bass Enhancement if activated, and low-pass and high-pass filters are engaged to help roll-off the frequency extremes to assure a clean and clear vocal presentation. The "Speech" position is useful for direct interface of a dynamic microphone to the inputs of the Impulse® 12D. When the Music/Speech switch is pushed in, and the Speech mode is engaged, the LED (19) to the upper right glows Green.

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