1. Introdución
This manual provides essential information for the proper setup, operation, and maintenance of your Bose RA-8 Stereo Receiver. Please read it thoroughly before using the unit to ensure optimal performance and safety. The Bose RA-8 is a compact stereo receiver featuring FM/AM tuner capabilities and an integrated amplifier, designed to deliver high-quality audio performance.
Figura 1: Fronte view of the Bose RA-8 Stereo Receiver. This image shows the compact design and primary controls of the unit.
2. Información de seguridade
Observe sempre as seguintes precaucións de seguridade para evitar descargas eléctricas, incendios ou danos na unidade:
- Fonte de enerxía: Connect the unit only to an AC 100V, 50/60Hz power supply.
- Ventilación: Asegúrese de que haxa unha ventilación axeitada. Non bloquee as aberturas de ventilación.
- Auga e humidade: Non expoña a unidade á choiva nin á humidade. Non coloque obxectos cheos de líquidos, como vasos, enriba da unidade.
- Obxectos estranxeiros: Do not insert any metallic objects or flammable materials into the unit.
- Servizo: Non intente realizar o mantemento da unidade vostede mesmo. Encomende calquera mantemento a persoal de servizo cualificado.
- Colocación: Place the unit on a stable, level surface away from direct sunlight, heat sources, and excessive dust or vibrations.
3. Configuración
3.1 Desembalaxe
Carefully remove the unit from its packaging. Retain the packaging materials for future transport or storage.
3.2 Conexións
Ensure the unit is powered off before making any connections.
- Conexión do altofalante: Connect your speakers to the speaker terminals on the rear panel. The unit supports a load impedance of 6Ω to 16Ω. Ensure correct polarity (+ to + and - to -).
- Conexión de fonte de audio: Connect external audio devices (CD player, MD player, tape deck, or other AUX sources) to the corresponding input jacks on the rear panel using appropriate audio cables. The input sensitivity for CD, MD, and TAPE/AUX is 200mV/47kΩ.
- Conexión antena:
- Antena FM: Connect the supplied FM antenna or an external FM antenna to the FM antenna terminal. For optimal reception, extend the antenna fully.
- Antena AM: Connect the supplied AM loop antenna to the AM antenna terminals. Position the loop antenna for best reception.
- Conexión de alimentación: After all other connections are made, plug the power cord into an AC 100V wall outlet.
4. Instrucións de funcionamento
4.1 Encendido/apagado
Preme o POTENCIA botón do panel frontal ou do control remoto para acender ou apagar a unidade.
4.2 Selección da fonte
Preme o CD, MD, ou TAPE/AUX buttons on the front panel or remote control to select the desired audio input source.
4.3 Funcionamento do sintonizador
- Selección de bandas: Preme o FM/AM botón para cambiar entre as bandas FM e AM.
- Sintonización manual: Usa o TUNE +/- botóns para axustar manualmente a frecuencia.
- Auto Tuning (Scan Tuning): Manteña premido o TUNE +/- botóns para buscar automaticamente a seguinte emisora dispoñible.
- Estacións predefinidas: The unit allows registration of up to 30 FM/AM broadcast stations. Refer to the detailed instructions for saving and recalling preset stations. The Area Fine Memory feature allows recalling stations by specifying a region.
- AM Stereo Reception: The unit supports AM stereo broadcasts.
4.4 Control de volume
Axuste o volume de escoita usando o botón VOLUME botón no panel frontal ou no VOL +/- botóns do control remoto.
4.5 Funcións do temporizador
- AI Sleep Timer: This function allows the unit to automatically turn off after a set period, useful for listening to music while falling asleep.
- Advanced Timer: The unit features an advanced timer for scheduled recording or as an alarm function. Consult the full manual for detailed programming instructions.
5. Mantemento
To maintain the performance and appearance of your Bose RA-8, follow these guidelines:
- Limpeza: Wipe the unit with a soft, dry cloth. For stubborn stains, use a cloth lightly dampened with water or a mild detergent, then wipe dry. Do not use abrasive cleaners, alcohol, benzene, or thinners, as these can damage the finish.
- Ventilación: Comprobe periodicamente que as aberturas de ventilación estean libres de po e obstrucións.
- Cable de alimentación: Inspect the power cord regularly for any damage. If damaged, discontinue use and contact qualified service personnel.
6 Solución de problemas
If you experience problems with your Bose RA-8, refer to the following common issues and solutions:
| Problema | Causa posible | Solución |
|---|---|---|
| Sen poder | Cable de alimentación non conectado; Toma de corrente avariada | Asegúrate de que o cable de alimentación estea ben conectado; proba cunha toma de corrente diferente. |
| Sen son | Volume too low; Incorrect input source selected; Speaker cables disconnected | Aumentar o volume; Seleccionar a fonte de entrada correcta; Comprobar as conexións dos altofalantes. |
| Poor FM/AM reception | Antena non conectada ou mal colocada; Interferencia | Connect and adjust antenna position; Move unit away from other electronic devices. |
| O control remoto non funciona | Pilas esgotadas; Obstrución entre o mando a distancia e a unidade | Substitúa as pilas do mando a distancia; retire calquera obstrución. |
If the problem persists after trying these solutions, please contact Bose customer support or a qualified service technician.
7. Especificacións
| Característica | Especificación |
|---|---|
| Sección Sintonizador FM | |
| Frequency Range (STEP) | 76 - 108 MHz (100 kHz step) |
| Practical Sensitivity | 14.2 dBf (MONO) |
| S/N Ratio (65 dBf) | Monaural: 75 dB or more |
| Frequency Characteristics (Stereo) | 30 - 15,000 Hz (+1 dB, -3 dB) |
| Distortion (IHF, 65 dBf, Monaural 1 kHz) | 0.4% ou menos |
| Separación estéreo (1 kHz) | 40 dB ou máis |
| Sección de sintonizadores AM | |
| Frequency Range (STEP) | 531 - 1,629 kHz (9 kHz step) |
| Practical Sensitivity (Loop Antenna) | 57 dBμV/m |
| Distorsión harmónica total | 0.9% ou menos |
| S/N Ratio (80 dB/m) | 40 dB ou máis |
| Stereo Separation (400 Hz) | 20 dB ou máis |
| AmpSección máis viva | |
| Practical Maximum Output (1 kHz, EIAJ) | 25 W + 25 W (6Ω) |
| Distorsión harmónica total | 0.03% ou menos |
| Impedancia de carga | 6Ω - 16Ω |
| Sensibilidade/Impedancia de entrada (1 kHz) | CD: 200 mV/47 kΩ MD: 200 mV/47 kΩ TAPE/AUX: 200 mV/47 kΩ |
| Maximum Allowable Input (1 kHz) | CD, MD: 3 V (THD 1.0%) |
| Vol. De saídatage (1 kHz) | MD/TAPE/AUX: 200 mV/47 kΩ |
| Impedancia de saída (1 kHz) | MD/TAPE/AUX: 2.2 kΩ |
| Frequency Characteristics (1 W) | CD, MD, TAPE/AUX: 10 - 70,000 Hz (+3 dB, -3 dB) |
| Relación S/N | CD, MD, TAPE/AUX: 80 dB or more |
| Xeral | |
| Alimentación Voltage | CA 100 V |
| Frecuencia de alimentación | 50/60 Hz |
| Consumo de enerxía | 40 W |
| Power Outlet (Non-interlocked, Max) | 100 W |
| Dimensións externas (ancho x alto x prof.) | 200 x 72.5 x 280 mm |
| Weight (Main Unit Only) | 3.1 kg |
| Tecnoloxía de conectividade | AUX |
| Método de control | Mando a distancia |
8. Garantía e soporte
Bose products are designed for reliability and performance. For warranty information, please refer to the warranty card included with your product or visit the official Bose website. For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact Bose customer support through their official channels. Keep your purchase receipt as proof of purchase for warranty claims.
Para obter máis información, pode visitar o Bose Store on Amazon.co.jp.
