Pro-Ject Sub Box 50
Dear music lover, thank you for purchasing a subwoofer from Pro-Ject Audio Systems. In order to achieve maximum performance and reliability, please study these instructions for use carefully.
Safety Instructions
⚠️ Warning of a hazard for the user, the unit or possible misuse.
? Important notice.
- AC outlet voltages vary from country to country. Before connecting to the mains, ensure that the voltage in your area meets the voltage requirements printed on the power supply.
- The power supply is used to disconnect the unit from the mains. Ensure that the power supply is easily accessible at all times.
- Never handle the device or the power supply while your hands are wet or damp.
- Avoid letting liquids enter the device or the power supply.
- Never place any item containing liquid, such as a flower vase, on or near the device.
- Never spill any liquid on the device or the power supply.
- Never place any naked flame sources, such as lighted candles, on or near the device.
- The product shall not be used in damp or wet locations, next to a bathtub, sink, swimming pool, or any other similar conditions.
Connectors
Make all connections whilst the subwoofer is disconnected from the power supply.
Inputs
The Low Level Inputs (RCA) can be used either in stereo or mono configuration. Use the respective connections of your amplifier for the correct channels with Sub Box 50. The right channel is usually marked red, and the left channel white or black. The Low Level left channel can also be used for mono input.
The High Level Inputs (speaker terminals) should only be used with suitable amplifiers.
Adjusting Volume
Use the Volume knob to adjust the loudness to a suitable and desired volume. Please note that listening with too high a volume can damage your hearing; therefore, we advise only listening at moderate levels.
Adjusting Crossover
Use the Crossover knob to adjust the crossover frequency to your desired level.
Amplifier Mode
The Amplifier Mode switch lets you select between three different modes:
- Off: Subwoofer is turned off.
- On: Subwoofer is constantly turned on.
- Auto: The Subwoofer will turn itself off after 10 minutes when no signal is detected. It will automatically turn itself on if there is a suitable voltage present at the inputs (3mV on low level inputs).
Phase
The phase switch lets you switch between phases (0 degrees / 180 degrees). Picking the right phase setting is best done by listening.
Technical Specifications
| Specification | Value |
|---|---|
| Output Power | 50W RMS, 100W Peak |
| Frequency response | 38 Hz - 160 Hz (±3dB) |
| SNR | 72dB |
| THD+N | 0.015% (1W) |
| Input Sensitivity | 140mV (low level), 3.5V (high level) |
| Output Noise | 0.8 mV (crossover min), 1.7 mV (crossover max) |
| Power Consumption | 0.4W (stand by), 10W (no signal), 101W (full power) |
| Power Supply | Suitable for your country's voltage, 50/60Hz |
| Dimensions W x H x D | 205 x 280 x 205 mm |
| Weight | 6kg without power supply |
Service
Should you encounter a problem which you are not able to alleviate or identify despite the above information, please contact your dealer for further advice. Only if the problem cannot be resolved there, the unit should be sent to the responsible distributor in your country.
Warranty
The manufacturer accepts no responsibility for damage caused by not adhering to these instructions for use. Modification or changes to any part of the product by unauthorized persons release the manufacturer from any liability over and above the lawful rights of the customer.
Copyright and Trademarks
Pro-Ject Audio Systems is a registered Trademark of H. Lichtenegger. This guide was produced by: Pro-Ject Audio Systems. Copyright © 2017. All rights reserved.
The information was correct at the time of going to press. The manufacturer reserves the right to make changes to the technical specification without prior notice as deemed necessary to uphold the ongoing process of technical development.
