2 CONTROLS & OPERATION
2.1 FRONT PANEL
The front panel of the DigiTUBE contains:
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| OUTPUT LEVEL (dBu) |
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| 0 | 3 | 6 | 9 | 12 | 15 18 | 24 |
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TUBE PREAMP |
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| EQUALIZER |
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| 24 |
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| 120 |
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| 2k |
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| 5k |
| PAD/ |
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| 48V |
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| 80Hz |
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| EQ |
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| LINE |
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| IN |
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0 | 10 | 3 |
| 48 |
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| LOW | 1k+12 |
| 900 | 5k+12 | 15k+12 | ||||
| DRIVE | GAIN (dB) |
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| MID |
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MIC/INSTRUMENT |
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| LEVEL | FREQ |
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LINE |
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The front panel of the DigiTUBE is divided into two sections: the tube preamp controls are located on the left hand side of the unit’s front panel and the equalizer section is on the right.
2.1.1 TUBE PREAMP SECTION
Neutrik™ Combo Microphone (XLR) / Instrument (1⁄4”) Input
Drive Control
Pad/Line Switch
Gain Control (3dB - 48dB)
+48V Phantom Power Switch
Mic/Line/Instrument Input
The DigiTUBE has a Neutrik™ combo connector which provides both an XLR and a 1⁄4” TS input. The XLR connector can accept microphones or by engaging the PAD/LINE switch, line level signals. The 1⁄4” input is for instrument level signals only. If you wish to adapt a line level device with a 1⁄4” connector, An XLR connector with pins 1 and 3 tied together for ground and the hot connected to pin 2 must be made. This adapts the unbalanced line level cable to input signal via the XLR input and the PAD/LINE switch to convert the input to accept a line level signal.
M | O | RE |
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010
Drive
The DRIVE potentiometer controls how much signal is routed through the 12AX7 vacuum tube. The effect achieved by this procedure can be subtle to extreme, depending on the setting being used. A ‘warming up’ of the sound can be noticed at lower settings. This effect can be used to compensate for the harsh- ness commonly encountered in digital signals with
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