INTRODUCTION
Thank you for purchasing the PB23 Phantom Power Adapter, the unit is designed to provide years of lasting value and usefulness. The unit powers a condenser microphone that is designed for phantom powering. Phantom power microphones provide much greater dynamic range, lower noise and better sound quality. Most microphones will operate at full performance with 12 volts DC, however some mics require 48 volts which was the old tube mic standard. The PB23 features selectable voltage levels.
OPERATION
Switch the PHANTOM VOLTAGE to the appropriate setting. Connect a condenser microphone to the input connector(s) and connect the output(s) to a mixer or other audio input device. Apply power to the unit by connecting the enclosed adapter to an AC outlet and to the 12VDC Power Loop. The LED on the front of the unit will light. The two DC input jacks are provided in order to use one power supply to power more than one unit. The units provide no audio gain as they are not microphone preamps.
MIC | MIC | 12VDC PWR |
OUTPUT | INPUT | LOOP |
PHANTOM POWER
ADAPTER
PB23
PHANTOM VOLTAGE
12 VOLT 48 VOLT
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MIC | MIC | 12VDC PWR | |
OUTPUT | INPUT | LOOP | |
MIXER
PHANTOM POWER
ADAPTER
PB23
PHANTOM VOLTAGE
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| 12 VOLT 48 VOLT |
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| C4 | 47U |
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| J1 | 2 |
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| 47U |
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| C3 |
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| XLR F PC |
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| XLR M PC |
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| 1 |
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| R5 |
| 6.8K |
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| 6.8K |
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| C10 |
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| 503 |
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| U1A | 4069 |
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| C7 | .047 |
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| 1 | 2 |
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| SW1A |
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| DPDT |
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| U1F | U1E |
| U1B | 4069 |
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| C8 | .047 |
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13 | 12 | 11 | 10 | 3 | 4 |
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| 48V | 1 | 3 | 12V |
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| 4069 | 4069 |
| U1C | 4069 |
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| C9 | .047 |
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R3 |
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| 5 | 6 |
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10K |
| 22K |
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| U1D | 4069 |
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| 9 | 8 |
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| C10 | 120PF |
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| D6 | D5 | D3 | D7 | D4 | D2 |
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| C5 |
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| C6 |
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| 1U |
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| 1U |
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| 1N4148 |
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| 1N4148 |
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| 1N4148 |
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| U2 |
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| I | O |
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| G |
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| 2 |
| 1 UF |
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| JAPDC |
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| C1 |
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| D1 |
| 1000UF |
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| 1N4001 |
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| ROLLS CORPORATION |
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| Title |
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| PB23 PHANTOM BOX |
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| Size | Document Number |
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| REV | ||
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| A |
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| PB23.SCH |
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| Date: | September 4, 1995 | Sheet |
| of | |||
SPECIFICATIONS |
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PhantomVoltage: | 12V or 48V selectable |
Jacks: | Male and Female XLR jacks, |
| 2: 5mm DC input jacks |
Control: | 12/48 volt selector switch |
Power Input | 14 - 18 VCD (adapter included) |
Size: | 3" x 2.5" x 1.25" |
Weight: | 1 lb (.45 Kg) |