1. Introducció
The ST-838 is a compact and versatile HiFi 2.1 Channel Power Amplifier designed to deliver clear and powerful audio. With its 20W x 2 (L/R) + 40W (subwoofer) output, it is suitable for driving most passive speakers and subwoofers in various environments, including home, car, boat, RV, or outdoor settings. It features independent bass, treble, and master volume controls for precise sound adjustment.
2. Característiques
- 2.1 Channel Output: Delivers 20W x 2 for left/right channels and 40W for the subwoofer, providing a balanced and powerful audio experience.
- Controls de to: Independent bass and treble control knobs allow for delicate adjustment of high and low frequencies.
- Control de volum: Master volume knob for overall sound level adjustment.
- Múltiples entrades: Supports RCA and AUX inputs for broad compatibility with devices like phones, MP3/MP4 players, CD players, TVs, and computers.
- Disseny compacte: Mini-sized for easy installation and portability, ideal for various applications.
3. Contingut del paquet
Si us plau, comproveu el paquet per veure si hi ha els elements següents:
- 1x ST-838 Power Ampmés viu
- 1 x manual d'usuari
4. Disseny del producte
Familiaritzeu-vos amb els panells frontal i posterior del ampmés viu:
Controls del panell frontal:
- Botó d'engegada (ENCÈS/APAGAT): Activa o desactiva amppotència de lificació.
- Indicador d'alimentació: S'il·lumina quan el ampel lifier està encès.
- Bass Indicator: Illuminates when Superbass Output is active.
- Bass Volume Knob (MIN/MAX): Adjusts the volume level of the bass output.
- Treble Knob (-10/+10): Ajusta la resposta d'alta freqüència.
- Bass Knob (-10/+10): Ajusta la resposta de baixa freqüència.
- Volume Knob (MIN/MAX): Controls the overall master volume.
- Entrada AUX: Jack de 3.5 mm per connectar fonts d'àudio externes.
Connexions del panell posterior:
- Entrada d'àudio (RCA L/R): RCA jacks for connecting stereo audio sources.
- Subwoofer Output (SUPER BASS): Terminal for connecting a passive subwoofer.
- Left Channel Output (L+ / L-): Terminals for connecting the left passive speaker.
- Right Channel Output (R+ / R-): Terminals for connecting the right passive speaker.
- DC 12V Input (3A): Power input for the ampmés viu.
5. Instruccions de configuració
- Connectar els altaveus: Connect your passive left and right speakers to the 'Left Channel Output' and 'Right Channel Output' terminals on the rear panel. Ensure correct polarity (+ to + and - to -).
- Connect Subwoofer (Optional): If using a passive subwoofer, connect it to the 'Subwoofer Output' terminal.
- Connecta la font d'àudio:
- For RCA input: Connect your audio source (e.g., CD player, TV) to the 'Audio Input (RCA L/R)' jacks on the rear panel.
- For AUX input: Connect your audio source (e.g., phone, MP3 player) to the 'AUX Input' 3.5mm jack on the front panel.
- Connectar l'alimentació: Connect a DC 12V 3A power adapter (not included) to the 'DC 12V Input' on the rear panel.
- Encès: Press the 'Power Button' on the front panel to turn on the amplifier. The Power Indicator will light up.
6. Instruccions de funcionament
- Ajustar el volum: Start with the 'Volume Knob' at a low setting. Gradually increase it to your desired listening level.
- Adjust Bass and Treble: Use the 'Bass Knob' and 'Treble Knob' to fine-tune the low and high frequencies according to your preference.
- Ajustar el volum dels baixos: If a subwoofer is connected, use the 'Bass Volume Knob' to control its output level. The Bass Indicator will light up when Superbass Output is active.
- Selecció d'entrada: El amplifier automatically detects the active input. If both RCA and AUX are connected, ensure only one source is playing at a time to avoid signal interference.
7. Manteniment
- Neteja: Utilitzeu un drap suau i sec per netejar-lo amplifier's exterior. Do not use liquid cleaners or aerosols.
- Ventilació: Assegureu-vos el amplifier has adequate ventilation to prevent overheating. Do not block the ventilation slots.
- Emmagatzematge: Quan no s'utilitzi durant períodes prolongats, guardeu-lo ampGuardar en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- Apagar: Apagueu sempre el ampLifer quan no s'utilitza per estalviar energia i allargar la seva vida útil.
8. Solució De Problemes
- Sense so:
- Comproveu si el amplifier is powered on and the power indicator is lit.
- Ensure all audio cables are securely connected to both the amplificador i la font d'àudio.
- Verify that the volume knobs (master, bass, treble) are not set to minimum.
- Confirm that your audio source is playing and its volume is turned up.
- Comproveu les connexions dels altaveus per assegurar-vos que la polaritat sigui correcta i que estiguin ben ajustades.
- So distorsionat:
- Reduce the master volume.
- Check if the audio source is providing a clean signal.
- Ensure speaker impedance is within the recommended range (4-8 Ω).
- Bass Indicator Not Lighting Up:
- The Bass Indicator only works when there is Superbass Output. Ensure a subwoofer is connected and active.
- No Bluetooth/Radio Functionality:
- Això amplifier model (ST-838) does not include built-in Bluetooth or radio functions.
9. Especificacions
| Atribut | Valor |
|---|---|
| Model | ST-838 |
| Canals | 3 (2.1) |
| Voltage | DC 12V 3A |
| Potència nominal (RMS) | 20W x 2 (L/R) + 40W (Subwoofer) |
| Freqüència nominal | 20-20KHz |
| Resolució | 47K |
| Taxa de distorsió | 0.4% |
| SNR | 80 dB |
| Impedància de l'altaveu | 4-8 Ω |
| Material | Aliatge d'alumini |
| Dimensions (LxWxH) | 15 x 9.1 x 3.7 cm (5.9 x 3.6 x 1.4 polzades) |
| Origen | Xina continental |
| Certificació | CE |
10. Consells d'usuari
- Compatibilitat d'altaveus: For optimal performance and to prevent damage, ensure your speakers have an impedance between 4 and 8 Ohms. Speakers with 12 Ohm impedance are not recommended.
- Font d'alimentació: Use a stable DC 12V 3A power supply for consistent performance. An underpowered supply may lead to reduced output or distortion.
- Qualitat del cable: Using high-quality audio cables can minimize interference and improve sound clarity.
- Col·locació: Col·loca el amplifier on a stable, flat surface with good airflow to prevent overheating.
11. Garantia i Suport
For any issues or questions regarding your ST-838 Power Amplifier, please contact the seller or retailer from whom you purchased the product. They will be able to provide assistance with troubleshooting, warranty claims, and technical support.
