active DI Amp TM103 - Control Elements

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Control Elements
active DI Amp - ToolMod Pro Audio - TM103
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Control Elements		Details and Specials
1	TRS Input Jack (1/4") for Instrument - see Details and Specials for more	Input Jack The TRS input jack is wired in parallel to the TRS jack 'OUT-b' and the female xlr connector 'IN-a' on the connector panel of the frame. This feature allows direct connection of the instrument to an amplifier without additional y cables. Pad If the input is driven from the output of a power amplifier, the input pad should be used to avoid distortion due to the high output levels. With pad, the input impedance is > 20 kOhms. unbalanced or balanced Mode The input defaults to unbalanced mode and can the altered to balanced mode by the BAL swtich. With balanced mode, the + phase (hot) is connected to the tip and the - phase (cold) is connected to the ring of the input TRS connector. With unbalanced mode, ring and sleeve is connected. Ground Lift Independent of the operation mode (unbalanced or balanced) the input is normally connected to the internal ground. The Ground Lift switch disconnects the internal ground from the ground of the input jack on the front panel. With unbalanced mode, there ring and sleeve are still connected. IMPORTANT NOTE: bThe GROUND LIFT SWITCH does not disconnect the ground of the TRS connectors on the connector panel of the frame that are wired in parallel to the input jack on the face plate. If amplifiers are installed on one of these connectors, humming can be caused by this ground connection. If this is the case, please use the xlr connector 'IN-a' instead. The pin 1 of this connector is also disconnected from the internal ground by the ground-lift switch.
2	selects input pad of 20 dB - see Details and Specials for more
3	selects balanced mode the input is unbalanced if this switch is not pressed - see Details and Specials for more
4	Gain Control control range 3 dB to 36 dB
5	Ground-Lift switch, separates the TRS jack on the top plate from the internal ground - see Details and Specials for more
6	Phase Reversal
7	High-pass filter, control for the lower corner frequency, control range < 20 Hz to 600 Hz, steepness 24 dB/Okt.
8	Low-pass filter, control for the upper corner frequency, control range > 20 kHz to 2 kHz, steepness 12 dB/Okt.
9	Peak-present level indicator 3-color LED Green - level >= - 20 dB yellow - nominal level above nominal level, the color changes from yellow to orange and red. The remaining headroom with red color is about 5 dB.
10	FILT switch inserts the high-pass/low-pass-filter