1. Introduzzjoni
The Pro-Ject Phono Box RS is a high-performance phono preamplifier designed for both Moving Magnet (MM) and Moving Coil (MC) cartridges. It offers extensive adjustability for input impedance, capacitance, and gain, allowing for precise matching with a wide range of cartridges. This manual provides essential information for the proper setup, operation, and maintenance of your Phono Box RS.
2. Istruzzjonijiet tas-Sigurtà
- Always connect the power adapter to the unit last, after all other audio connections have been made.
- Tiżgura l-provvista tal-enerġija voltage jaqbel mar-rekwiżiti speċifikati fuq l-unità.
- Tesponix l-unità għax-xita jew l-umdità.
- Evita li tpoġġi l-unità ħdejn sorsi tas-sħana bħal radjaturi, reġistri tas-sħana, stufi, jew apparat ieħor li jipproduċi s-sħana.
- Timblokka l-ebda fetħiet tal-ventilazzjoni.
- Disconnect the unit from the power outlet during lightning storms or when unused for long periods.
- Irreferi l-manutenzjoni kollha lil persunal tas-servizz kwalifikat. Is-servizz huwa meħtieġ meta l-apparat ikun ġie bil-ħsara b'xi mod, bħal korda tal-provvista tal-enerġija jew plagg ikun bil-ħsara, likwidu jkun inxtered jew oġġetti jkunu waqgħu fl-apparat, l-apparat ikun ġie espost għax-xita jew umdità, ma jaħdimx b'mod normali , jew twaqqgħet.
3. Kontenut tal-Pakkett
Jekk jogħġbok iċċekkja li l-pakkett tiegħek fih l-oġġetti li ġejjin:
- Pro-Ject Phono Box RS unit
- Power supply unit (18V DC)
- Manwal għall-Utent
4. Prodott Aktarview
4.1 Kontrolli ta' Front Panel
The front panel of the Phono Box RS features controls for adjusting various parameters to optimize performance with your phono cartridge.
Immaġni: Quddiem view of the Pro-Ject Phono Box RS, highlighting the impedance selector and control switches.
- Buttuna tal-Qawwa: Toggles the unit on and off.
- Selettur tal-impedenza: A rotary knob allowing adjustment of input impedance from 10 Ohm to 1,200 Ohm for MC cartridges.
- Swiċċ Mute: Ijattiva l-output tal-awdjo.
- Gain Switches: Adjusts the input gain (e.g., 40 dB, 50 dB, 60 dB) for both RCA and XLR outputs.
- Equalization Switches: Selects between RIAA and DECCA equalization curves.
- Swiċċ tal-Filtru Subsoniku: Activates or deactivates the 20 Hz, 12 dB/octave subsonic filter.
4.2 Konnessjonijiet tal-Panew ta' wara
The rear panel provides all necessary audio input and output connections, along with the power input.
Image: Rear panel connections, including RCA and XLR inputs/outputs.
- Inputs tal-Awdjo: One stereo RCA input and one stereo XLR input for connecting your turntable.
- Outputs tal-Awdjo: Stereo RCA and stereo XLR outputs for connecting to your amplifier jew riċevitur.
- Terminal tal-Art: For connecting the ground wire from your turntable to minimize hum.
- Input ta' Enerġija DC 18V: Connects to the supplied external power supply.
5. Setup
Follow these steps to set up your Pro-Ject Phono Box RS:
- Pjazzament: Place the Phono Box RS on a stable, level surface away from strong electromagnetic fields and heat sources.
- Konnessjoni tat-turntable:
- Connect the RCA or XLR output cables from your turntable to the corresponding input on the Phono Box RS.
- Connect the ground wire from your turntable to the ground terminal on the Phono Box RS.
- AmpKonnessjoni lifier: Connect the RCA or XLR output from the Phono Box RS to a line-level input (e.g., 'Aux', 'CD', 'Line In') on your amplifier or receiver. Do NOT connect it to another phono input.
- Konnessjoni tal-Enerġija: Connect the supplied 18V DC power supply to the '18V DC' input on the rear of the Phono Box RS, then plug the power supply into a wall outlet.
- Settings Inizjali: Before playing music, ensure the Mute switch is engaged.
6. Istruzzjonijiet Operattivi
The Phono Box RS offers extensive customization to match your cartridge and listening preferences.
6.1 Cartridge Type Selection (MM/MC)
The Phono Box RS automatically detects the cartridge type based on the impedance and gain settings. For MM cartridges, typically use higher capacitance and lower gain. For MC cartridges, adjust impedance and gain as needed.
6.2 Adjusting Input Impedance (MC Cartridges)
For Moving Coil (MC) cartridges, use the front panel rotary knob to adjust the input impedance. Start with the manufacturer's recommended impedance for your cartridge. Common settings range from 10 Ohm to 1,200 Ohm. Experiment to find the best sound for your system.
6.3 Adjusting Input Capacitance (MM Cartridges)
For Moving Magnet (MM) cartridges, the input capacitance can be adjusted. The unit offers options such as 100pF, 200pF, 300pF, 420pF, 520pF/47k ohm. Refer to your MM cartridge's specifications for the recommended capacitance. The 47k ohm setting is standard for MM cartridges.
6.4 Gain Setting
Use the gain switches to match the output level of your cartridge to your amplifier's input sensitivity. Options typically include 40 dB, 50 dB, and 60 dB. Higher gain is generally used for lower output MC cartridges.
6.5 Equalization Curve
The Phono Box RS supports both RIAA and DECCA equalization curves. RIAA is the standard for most modern records. Select DECCA only if you are playing older records specifically mastered with the DECCA curve.
6.6 Filtru Subsoniku
Activate the subsonic filter (20 Hz, 12 dB/octave) if you experience excessive low-frequency rumble or woofer pumping, which can be caused by warped records or turntable vibrations. This filter helps to remove inaudible low-frequency noise without affecting the musical content.
7. Manutenzjoni
To ensure the longevity and optimal performance of your Phono Box RS, follow these maintenance guidelines:
- Tindif: Use a soft, dry cloth to clean the exterior of the unit. Do not use liquid cleaners or solvents, as they may damage the finish.
- Ventilazzjoni: Kun żgur li l-fetħiet tal-ventilazzjoni ma jkunux imxekkla biex tevita li s-sħana tisħon iżżejjed.
- Ħażna: Jekk se taħżen l-unità għal perjodu estiż, skonnettjaha mill-provvista tal-enerġija u aħżenha f'post frisk u niexef.
8 Issolvi l-problemi
If you encounter issues with your Phono Box RS, consult the following table before contacting support.
| Problema | Kawża Possibbli | Soluzzjoni |
|---|---|---|
| L-ebda ħoss | Unit not powered on; Mute engaged; Incorrect connections; AmpL-input tal-lifer mhux magħżul. | Check power connection and switch; Disengage Mute; Verify all audio cables are correctly connected; Select correct input on ampaktar ħaj. |
| Ħsejjes ta’ daqq jew żanżin | Ground wire not connected; Ground loop; Nearby electrical interference; Faulty cables. | Ensure turntable ground wire is connected to Phono Box RS; Try different power outlets; Move unit away from other electronics; Replace audio cables. |
| Ħoss distort | Incorrect gain setting; Incorrect impedance/capacitance; Damaged cartridge/stylus. | Adjust gain to appropriate level for your cartridge; Verify impedance/capacitance settings match your cartridge; Inspect cartridge and stylus for damage. |
| Sound too quiet or too loud | Issettjar tal-qligħ mhux korrett. | Adjust the gain switches on the front panel to match your cartridge output and amplifier input sensitivity. |
9. Speċifikazzjonijiet
Technical specifications for the Pro-Ject Phono Box RS:
- Inputs tal-Awdjo: 1 Stereo RCA, 1 Stereo XLR
- Adjustable Input Impedance: 10 Ohm sa 1,200 Ohm
- Input Capacitance Options: 100pF, 200pF, 300pF, 420pF, 520pF/47k ohm
- Fixed Input Impedance: 10 Ohm (for specific configurations)
- Input Gain (with XLR): 40 dB, 50dB (B), 60dB (A)
- Filtru Subsoniku: 20 Hz, 12 dB / ottava
- Provvista tal-Enerġija: Dual 18 V/250 mA DC
- Użu tal-Enerġija: 150 mA DC, Less than 1W in Standby
- Dimensjonijiet (WHD): 8.1" x 2.9" x 7.9" (206 x 72 x 200 mm)
- Piż tal-Prodott: 4.4 lb (2 kg)
Komponenti Interni
Immaġni: Interna view of the Phono Box RS circuit board.
10. Garanzija u Appoġġ
Pro-Ject products are manufactured to the highest standards and undergo strict quality control. In the unlikely event of a defect, please refer to the warranty terms provided with your purchase documentation. For technical support or service inquiries, please contact your authorized Pro-Ject dealer or distributor. Keep your proof of purchase for warranty claims.
