1. Johdanto
The Pro-Ject Tube Box S2 is a high-quality phono preamplifier designed to enhance the audio signal from your turntable. It features a discrete circuit design without operational amppelastajia (opAmps) and utilizes two ECC83 tubes, which can be interchanged to customize the sound. This unit is compatible with both Moving Magnet (MM) and Moving Coil (MC) cartridges, offering versatile connectivity and sound adjustment options. Its robust aluminum and metal sandwich casing provides effective protection against vibrations and electromagnetic interference, ensuring a clean audio signal.
2. Turvallisuusohjeet
- Always connect the power adapter to the unit last.
- Ensure the unit is placed on a stable, level surface to prevent accidental falls.
- Älä altista laitetta kosteudelle, sateelle tai äärimmäisille lämpötiloille.
- Avoid placing the unit near heat sources such as radiators or other heat-producing appliances.
- Disconnect the power adapter from the wall outlet during lightning storms or when unused for extended periods.
- Älä yritä avata tai huoltaa laitetta itse. Jätä kaikki huoltotyöt pätevän henkilöstön tehtäväksi.
3. Pakkauksen sisältö
Tarkista, että pakkauksesi sisältää seuraavat tuotteet:
- Pro-Ject Tube Box S2 levysoitinetuasteampelävämpi
- Virtalähde
- Käyttöopas
4. Tuote ohiview
The Tube Box S2 features a compact design with clearly labeled inputs, outputs, and controls.
Etupaneeli
Kuva: Edessä view of the Pro-Ject Tube Box S2. This image displays the unit's front panel with its two prominent vacuum tubes, indicating its tube-based amplifiointi.
- Vahvistuksen valitsin: Säätää amplification level for different cartridge types.
- Subsonic Filter Switch: Activates or deactivates the subsonic filter to remove unwanted low-frequency rumble.
Takapaneeli
Kuva: Takaosa view of the Pro-Ject Tube Box S2. This image highlights the rear connections, including the gold-plated RCA input and output jacks, the ground screw, and the 18V DC power input.
- RCA Inputs (In): Connect your turntable's RCA cables here.
- RCA Outputs (Out): Yhdistä nämä omaan amplifier's line-level input.
- Maadoitusruuvi: Connect your turntable's ground wire here to minimize hum.
- 18V DC virransyöttö: Liitä mukana toimitettu virtalähde.
- Impedance/Capacitance DIP Switches: Located on the underside of the unit, these switches allow fine-tuning of input impedance and capacitance to match your cartridge.
5. Asennus
Follow these steps to connect your Tube Box S2 to your audio system:
- Sijoitus: Position the Tube Box S2 on a stable surface, away from strong electromagnetic fields and heat sources.
- Levysoittimen liitäntä: Connect the RCA output cables from your turntable to the RCA Inputs (In) on the rear of the Tube Box S2.
- Maaliitäntä: Liitä levysoittimen maadoitusjohto Maadoitusruuvi on the Tube Box S2.
- Ampnostimen liitäntä: Yhdistä RCA Outputs (Out) of the Tube Box S2 to a line-level input on your ampviritin (esim. AUX, CD, viritin). Do not connect to your amplifier's Phono input, as this unit is a phono preampnostaja itse.
- Virtaliitäntä: Liitä mukana toimitettu 18 V:n tasavirtasovitin 18V DC-virtalähde on the Tube Box S2, then plug the adapter into a wall outlet.
Järjestelmäintegraatio esimample
Image: The Pro-Ject Tube Box S2 shown as part of a complete hi-fi system, illustrating its position between a turntable and an ampelävämpi.
Cartridge Settings (Gain, Impedance, Capacitance)
The Tube Box S2 offers adjustable settings to optimize performance for various MM and MC cartridges. These settings are crucial for achieving the best sound quality.
- Saada: Use the front panel selector to choose the appropriate gain setting for your cartridge. MM cartridges typically require lower gain (e.g., 40dB), while MC cartridges require higher gain (e.g., 60dB). Consult your cartridge's specifications for the recommended gain.
- Impedance & Capacitance: These are adjusted via DIP switches located on the underside of the unit. Refer to your cartridge's specifications for the recommended load impedance and capacitance. For high-output MC cartridges, the fixed 47kOhm setting is often suitable.
6. Käyttöohjeet
- Virta päälle: Once all connections are secure, plug the power adapter into the wall outlet. The unit will power on automatically.
- Select Input on Ampelävämpi: Choose the corresponding line-level input on your amplifier where the Tube Box S2 is connected.
- Toistotiedot: Start playing a record on your turntable.
- Säädä äänenvoimakkuutta: Control the overall volume using your ampelävämpi.
- Subsonic -suodatin: If you experience excessive low-frequency rumble or woofer pumping, activate the subsonic filter using the front panel switch. This helps to remove infrasonic frequencies that can cause distortion.
7. Huolto
Puhdistus
To clean the unit, use a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the finish.
Putken vaihto
The ECC83 tubes in the Tube Box S2 are designed to be interchangeable, allowing for sound customization. If a tube needs replacement due to wear or for sonic experimentation, ensure the unit is powered off and unplugged before carefully removing and inserting new tubes. Handle tubes by their base to avoid damage.
8. Vianmääritys
Jos kohtaat ongelmia, tutustu seuraaviin yleisiin ongelmiin ja ratkaisuihin:
| Ongelma | Mahdollinen syy | Ratkaisu |
|---|---|---|
| Ei ääntä | Incorrect connections, power off, wrong ampelinvoimaisempi panos. | Check all RCA and ground connections. Ensure power adapter is plugged in. Select correct line-level input on ampelävämpi. |
| Hurinaa tai surinaa | Ground loop, ungrounded turntable, interference. | Ensure turntable ground wire is securely connected to the Tube Box S2. Try moving the unit away from other electronic devices. |
| Vääristynyt tai heikko ääni | Incorrect gain setting, impedance/capacitance mismatch, worn tubes. | Adjust gain to match cartridge. Check DIP switch settings for impedance/capacitance. Consider replacing tubes if they are old. |
| Excessive bass rumble | Infrasonic frequencies from warped records or turntable rumble. | Activate the subsonic filter on the front panel. |
9. Tekniset tiedot
- Valmistaja: Pro-Ject
- Malli: Pro-Ject Tube Box S2
- Kanavien määrä: 2
- Lähtöteho: 10 wattia
- Suurin tarjonta Voltage: 18 volttia
- Asennustyyppi: Pinta-asennus
- Materiaali: Aluminum/Metal casing
- Mukana olevat komponentit: Putkilaatikko S2
- Tuotteen paino: 2.12 paunaa (noin 0.96 kg)
- Alkuperämaa: Itävalta
- Vaatimustenmukaisuus: CE
10. Takuutiedot
Pro-Ject offers a 25-year spare parts warranty for this product. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact your local Pro-Ject dealer. Keep your proof of purchase for warranty claims.
11. Tukea
For further assistance, technical support, or service inquiries, please contact your authorized Pro-Ject dealer or visit the official Pro-Ject Audio Systems website. You can find contact information and additional resources there.
