Pro-Ject Phono Box S2 Ultra Preamplificador de phonoampManual d'usuari més viu

1. Introducció

The Pro-Ject Phono Box S2 Ultra is a high-performance phono preamplifier designed to enhance the audio quality from your turntable. It features a discrete circuit design without operational amplificadors (OpAmps) and utilizes audiophile-grade polystyrene capacitors for precise RIAA equalization. Its robust metal casing provides effective protection against electromagnetic interferences, ensuring a clean and detailed sound reproduction.

This manual provides essential information for setting up, operating, and maintaining your Phono Box S2 Ultra, ensuring optimal performance and longevity.

Figura 1: Frontal view of the Pro-Ject Phono Box S2 Ultra. This image displays the sleek, silver-colored metal chassis with a single power button on the left and the "Phono Box S2 Ultra" text along with the Pro-Ject logo on the right.

2. Configuració i connexions

Before connecting your Phono Box S2 Ultra, ensure all audio equipment is powered off. Carefully unpack the unit and verify all components are present.

2.1. Desembalatge i contingut

Your package should contain the Phono Box S2 Ultra unit and its external 18V DC power supply.

2.2. Connecting Your Turntable

Connect the RCA output cables from your turntable to the "In" RCA jacks on the rear of the Phono Box S2 Ultra. Ensure the left and right channels are correctly matched (typically red for right, white/black for left). If your turntable has a ground wire, connect it to the ground terminal located next to the input jacks.

2.3. Connecting to Your Ampmés viu / receptor

Connecteu el "Out" RCA jacks of the Phono Box S2 Ultra to a line-level input on your amplifier or receiver (e.g., "Aux", "CD", "Line In"). Do not connect it to a "Phono" input on your amplifier, as this would result in double equalization and distorted sound.

2.4. Connexió d'alimentació

Connect the external 18V DC power supply to the "18V" input jack on the rear of the Phono Box S2 Ultra. Then, plug the power supply into a suitable AC outlet.

posterior view of the Pro-Ject Phono Box S2 Ultra showing input and output RCA jacks, ground terminal, subsonic filter button, and power input.

Figure 2: Rear connections of the Phono Box S2 Ultra. This image highlights the "In" (input) and "Out" (output) RCA connectors for left and right channels, the ground screw, the small black button for the subsonic filter, and the 18V DC power input jack.

2.5. Initial Configuration (Dip Switches)

The Phono Box S2 Ultra features dip switches on its underside for adjusting input impedance, capacitance, and gain. These settings should be matched to your phono cartridge's specifications for optimal sound. Refer to your cartridge's manual for recommended settings. A small tool (e.g., a toothpick or small screwdriver) may be needed to adjust these switches.

Guany: Adjusts the output level to match your amplifier's input sensitivity and cartridge output. Four adjustable gain levels are available.
Input Impedance/Capacitance: Crucial for matching Moving Magnet (MM) and Moving Coil (MC) cartridges. Incorrect settings can lead to frequency response anomalies.
Filtre subsònic: A switchable -18 dB @ 20Hz filter is located on the rear panel (see Figure 2). This filter helps to remove very low-frequency rumble and warp-induced signals that can cause speaker cone excursion without contributing to audible music.

It is recommended to experiment with these settings to find the best sound for your specific setup and listening preferences.

3. Funcionament

Once all connections are secure and dip switches are set, you can begin using your Phono Box S2 Ultra.

3.1. Encès / apagat

Press the power button on the front panel (refer to Figure 1) to turn the unit on or off. A small LED indicator next to the button will illuminate when the unit is powered on.

3.2. Listening to Records

With the Phono Box S2 Ultra powered on and your amplifier set to the correct input, you can now play records on your turntable. Adjust the volume on your amplifier as usual.

Pro-Ject Phono Box S2 Ultra placed next to a blue Pro-Ject turntable with an orange record, illustrating a typical setup.

Figure 3: The Phono Box S2 Ultra integrated into an audio system. This image shows the compact preamplifier positioned next to a turntable, demonstrating its small footprint and how it fits into a typical vinyl playback setup.

4. Manteniment

Proper care will ensure the longevity and performance of your Phono Box S2 Ultra.

Neteja: Disconnect the unit from power before cleaning. Use a soft, dry, lint-free cloth to wipe the exterior. Avoid using liquid cleaners, aerosols, or abrasive materials.
Col·locació: Place the unit on a stable, level surface away from direct sunlight, heat sources, and excessive moisture. Ensure adequate ventilation around the unit.
Emmagatzematge: Si guardeu la unitat durant un període prolongat, desconnecteu-la de l'alimentació i guardeu-la en un lloc fresc i sec, preferiblement en el seu embalatge original.

5. Solució De Problemes

If you encounter issues with your Phono Box S2 Ultra, consult the following table for common problems and solutions.

Problema	Causa possible	Solució
No hi ha so o la sortida de so és molt baixa.	La unitat no està engegada. Connexions d'entrada/sortida incorrectes. Incorrect gain settings on dip switches. Amplifier input not selected correctly.	Assegureu-vos que el botó d'engegada estigui premut i que el LED estigui encès. Verify RCA cables are securely connected to "In" from turntable and "Out" to ampmés viu. Check dip switch settings for appropriate gain for your cartridge. Select the correct line-level input on your amplifier (e.g., Aux, CD).
Distorted or unnatural sound.	Phono Box connected to ampEntrada "Phono" del lifer. Incorrect impedance/capacitance settings. Cables danyats.	Connect Phono Box S2 Ultra to a line-level input (e.g., Aux, CD) on your ampmés viu. Adjust dip switches to match your cartridge's recommended impedance and capacitance. Prova diferents cables RCA.
Soroll de brunzit o brunzit.	Cable de terra no connectat o fluix. Interferències d'altres dispositius electrònics. Font d'alimentació defectuosa.	Ensure turntable ground wire is securely connected to the Phono Box S2 Ultra's ground terminal. Move the Phono Box S2 Ultra away from power transformers, Wi-Fi routers, or other electronic devices. Test with a different power outlet. Contact support if hum persists.

6. Especificacions

The following are key technical specifications for the Pro-Ject Phono Box S2 Ultra:

Model: Phono Box S2 Ultra
Entrada/sortida: 1 parell de connectors RCA
Canals: 2
Voltage: 18 volts (CC)
Material: Metall casing
Característiques: Switchable input impedance/capacitance, Four adjustable gain levels, Switchable Subsonic filter –18 dB @ 20Hz, Audiophile-grade polystyrene capacitors, No Operational Amplificadors (OpAmps) used.
Pes: Aproximadament 1.52 lliures (0.69 kg)
Compliment: CE, FCC
Fabricant: Pro-Ject

Note: Product dimensions provided in source data (0.39 x 0.39 x 0.39 inches) appear to be incorrect. The unit features a compact, surface-mount design.

7. Garantia i Suport

For detailed warranty information, please refer to the warranty card included with your product or visit the official Pro-Ject Audio Systems weblloc. Els termes i condicions de la garantia poden variar segons la regió.

Should you require technical assistance or support, please contact your authorized Pro-Ject dealer or the Pro-Ject customer service department. Contact information can typically be found on the manufacturer's weblloc o a l'embalatge del producte.

Per a més informació, visiteu el Pro-Ject Store on Amazon.

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