Instruction Manual

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Table Of Contents

INSTRUCTIONS FOR USE

Pro-Ject Tube Box DS2

Summary of content (6 pages)

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INSTRUCTIONS FOR USE Pro-Ject Tube Box DS2
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Dear music lover, Thank you for purchasing this tube phono preamplifier from Pro-Ject Audio Systems. In order to achieve maximum performance and reliability you should study these instructions for use carefully. ! Warning of a hazard for the user, the unit or possible misuse Important notice Safety instructions ! AC outlet voltages vary from country to country. Before connecting to the mains, make sure that the voltage in your area meets the voltage requirements printed on the power supply.
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Mains power connection Connect the low voltage plug from the power supply to the Power 18V DC socket of the phono amplifier before connecting the power supply to the mains. Remote power on - triggers The phono amplifier can be switched on & off via a special connection from other Pro-Ject products equipped with trigger connections via the 2,5mm socket marked Trigger Input. The remote power-on signal can be relayed to further units via the Trigger Output socket.
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Gain dB Gain for the outputs can be set between 40dB, 45dB, 50dB, 60dB and 65dB in steps of 5dB or 10dB. Any change will be automatically stored for the chosen input, when input is changed or the unit is switched into standby mode. Input impedance, variable – low-output MC cartridges The button Loading Ω must be set to Variable.
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Technical specifications Pro-Ject Tube Box DS2 Tubes: Input impedance : Input capacitance : Gain: Output voltage typically: Noise floor: THD: RIAA-equalisation curve accuracy: Input: Line-level output: Outboard power supply: Power consumption: Dimension W x D x H (D with sockets) Trigger output/input: Weight (without power supply): 2 x ECC83 (12AX 7A) variable 10-1000 ohms/ 47.
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Potential incorrect use and fault conditions No signal on one or both channels: No connection between player and phono amplifier or amplifier. This could be due to a faulty plug, broken wire or solder joint or simply loose plug/socket connection. Strong hum: No earth connection from cartridge or arm, or arm cable to phono amplifier, or earth loop. Output too quiet or too loud, or distorted: Input gain incorrectly set - input overloading or insufficiently amplified.