Introducció
This manual provides comprehensive instructions for the safe and efficient operation of your Crown D-45 Power Amplifier. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of the unit.
Informació important de seguretat
Observeu sempre les següents precaucions de seguretat per evitar descàrregues elèctriques, incendis o danys a la unitat:
- Font d'alimentació: Connecteu el amplifier only to a power supply of the type specified on the unit's rear panel.
- Posada a terra: Assegureu-vos el amplifier is properly grounded to prevent electrical hazards.
- Ventilació: Do not block ventilation openings. Allow adequate airflow around the unit to prevent overheating.
- Humitat: Do not expose the unit to rain or moisture. Do not place objects filled with liquids on the ampmés viu.
- Manteniment: Demaneu totes les tasques de manteniment a personal de servei qualificat. No intenteu fer el manteniment d'aquest producte vosaltres mateixos.
- Substitució de fusibles: Replace fuses only with the same type and rating as specified on the unit.
Característiques clau
The Crown D-45 Power Amplifier offers advanced features for high-quality audio amplificació:
- Potència estèreo amplifier with accurate, uncolored sound and very low distortion.
- AB+B class circuitry for maximum efficiency and minimal crossover distortion.
- Ultra-low harmonic and inter-modulation distortion for superior dynamic transfer function.
- IOC (Input/Output Comparator) alerts for distortion exceeding 0.05%, ensuring distortion-free performance.
- Supports both bridged mono and stereo operation modes.
Configuració i connexions
Abans de connectar el amplifier, ensure all equipment is powered off. Refer to the diagrams below for proper connection procedures.
Figura 1: Frontal view of the Crown D-45 Power Amplifier, showing the main unit and attached power cord.
Figure 2: Rear panel of the Crown D-45, detailing input (XLR, RCA) and output (speaker terminals) connections.
Connexions d'entrada d'àudio
Connecteu la font d'àudio (per exemple, mesclador, preamplificador)amplifier) al amplifier's input jacks. The D-45 supports both XLR and RCA input connectors.
- Per Entrades XLR, use balanced XLR cables.
- Per Entrades RCA, use unbalanced RCA cables.
- Important: When operating in mono mode, use only the CH-1 input.
Connexions de sortida dels altaveus
Connect your speakers to the output terminals on the rear panel. Ensure correct polarity (+ to + and - to -) for each channel.
- Channel 1 Outputs: Connect your left speaker.
- Channel 2 Outputs: Connect your right speaker.
- Per Bridged Mono Operation: Consult the specific wiring diagram provided in the full manual for proper connection to a single speaker.
Connexió d'alimentació
After all audio connections are made, connect the amplifier's power cord to a suitable AC outlet (120V, 60Hz for US models). Ensure the power switch on the front panel is in the "OFF" position before plugging in.
Instruccions de funcionament
Follow these steps to power on and operate your Crown D-45 Power Ampmés viu.
Figure 3: Close-up of the left side of the front panel, showing the Headphone jack, Channel 1 Level control, and Signal/IOC indicators.
Figure 4: Close-up of the right side of the front panel, showing the Power ON/OFF switch.
Encès
- Ensure all level controls (Channel 1 and Channel 2) are set to their minimum (fully counter-clockwise) position.
- Gira el PODER switch to the "ON" position (refer to Figure 4). The power indicator should illuminate.
- Slowly increase the level controls for Channel 1 and Channel 2 to your desired listening volume.
Controls i indicadors
- Level Controls (Channel 1 & Channel 2): Adjust the output volume for each respective channel.
- Presa per a auriculars: Connect stereo headphones for monitoring the output.
- SIGNAL Indicators: These LEDs illuminate when an audio signal is present on the corresponding channel.
- IOC (Input/Output Comparator) Indicators: These LEDs illuminate if distortion exceeds 0.05%. If an IOC indicator lights up, reduce the input level or the channel's level control to prevent clipping and distortion.
Apagant
- Reduce both Channel 1 and Channel 2 level controls to their minimum position.
- Gira el PODER interruptor a la posició "OFF".
Manteniment
Proper maintenance ensures the longevity and optimal performance of your D-45 ampmés viu.
- Neteja: Utilitzeu un drap suau i sec per netejar l'exterior ampNo utilitzeu netejadors líquids ni dissolvents.
- Ventilació: Comproveu periòdicament que les obertures de ventilació estiguin netes de pols i deixalles.
- Connexions: Ensure all input and output connections are secure and free from corrosion.
- Substitució de fusibles: If a fuse blows, replace it only with a fuse of the identical type and rating as specified on the unit's rear panel. Disconnect power before replacing fuses.
Resolució de problemes
If you encounter issues with your Crown D-45 amplifier, consult the following table before seeking professional service.
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Power cord not connected; Power switch off; Blown fuse; No AC power from outlet. | Check power cord connection; Turn power switch ON; Replace fuse (if necessary, with correct type); Test AC outlet with another device. |
| Sense sortida de so | Input cables disconnected; Speaker cables disconnected or incorrect polarity; Level controls set to minimum; Source device not playing. | Check all input and output cable connections; Verify speaker polarity; Increase level controls; Ensure audio source is active. |
| Distorted sound / IOC indicator lit | Senyal d'entrada massa alt; Amplifier overloaded; Faulty speaker. | Reduce input signal level from source; Decrease amplifier level controls; Check speaker connections and integrity. |
| Zum o soroll | Ground loop; Faulty cables; Interference from other equipment. | Ensure proper grounding; Try different cables; Move ampl'amplificador lluny d'altres dispositius electrònics. |
Especificacions
Below are the technical specifications for the Crown D-45 Power Ampmés viu.
Figure 5: Product label showing model number, serial number, AC voltage, amps, max power in watts, and patent information.
- Nom del model: D-45
- Número de model de l'article: D45
- Marca: Corona
- Potència de sortidatage: 45 watts
- Font d'alimentació: Elèctric amb cable
- Tipus de connector: RCA
- Dispositius compatibles: Tots
- Color: Negre
- Pes de l'article: 10.8 lliures
- Dimensions del paquet: 21.3 x 12.7 x 2.7 polzades
- AC Volts (as per label): 120
- Amps (as per label): 1
- Max Power In (as per label): 120 watts
Garantia i Suport
Warranty information and detailed customer support contacts are typically provided with the product packaging or available on the manufacturer's official website. Please refer to the official Crown website or your purchase documentation for specific warranty terms and support options.
For technical assistance or service inquiries, please contact Crown customer support.
