1. Rhagymadrodd
Diolch am brynuasing the Douk Audio Nobsound A2 PRO Bluetooth 5.0 Digital Amplifier. This manual provides detailed instructions for the proper setup, operation, and maintenance of your amplifier. Please read this manual thoroughly before use to ensure optimal performance and longevity of the product.
2. Cyfarwyddiadau Diogelwch
- Peidiwch â gwneud y ddyfais hon yn agored i law neu leithder.
- Peidiwch â dadosod yr uned. Cyfeiriwch yr holl waith cynnal a chadw at bersonél cymwys.
- Sicrhewch awyru priodol o amgylch yr uned i atal gorboethi.
- Use only the provided power adapter or one with identical specifications (DC 19-35V).
- Cadwch yr uned i ffwrdd o ffynonellau gwres, golau haul uniongyrchol, a meysydd magnetig cryf.
- Avoid connecting or disconnecting speaker wires while the amplifier is powered on to prevent damage.
3. Cynnwys Pecyn
Gwiriwch y pecyn am yr eitemau canlynol:
- Nobsound A2 PRO Digital Ampllewywr
- Addasydd Pŵer (32V/5A)
- Bluetooth Antennas (x2)
- Llawlyfr Defnyddiwr (y ddogfen hon)
Image: The Nobsound A2 PRO amplifier, power adapter, and two Bluetooth antennas, illustrating the complete package contents.
4. Cynnyrch Drosview
4.1 Panel Blaen
Delwedd: Manwl view o'r amplifier's front panel, highlighting the Power/Mute button, Input Selection button, Volume knob, Bass knob, and Treble knob, along with the working indicator lights.
- PWR/MUTE Button: Press to power on/off or mute/unmute the audio.
- Botwm SELECT: Press to cycle through input sources: Bluetooth (BT), AUX, RCA.
- Dangosydd Gweithio: Lights indicate the currently selected input (BT, AUX, RCA) and power status.
- VOL Knob: Yn addasu'r gyfrol allbwn gyffredinol.
- Knob BASS: Adjusts the low-frequency audio level.
- TRE Knob: Adjusts the high-frequency audio level.
4.2 Panel Cefn
Delwedd: Manwl view o'r amplifier's rear panel, showing the RF antenna connectors, AUX input, RCA L/R inputs, Speaker Output terminals, SUB OUT, and DC 19-35V power input.
- RF (Antenna) Connectors: For attaching the Bluetooth antennas.
- Mewnbwn AUX: 3.5mm stereo input for connecting devices via an audio cable.
- RCA Input (L/R): Stereo RCA inputs for connecting audio sources.
- Allbwn Siaradwr: Binding posts for connecting passive stereo speakers.
- IS ALLAN: Allbwn RCA ar gyfer cysylltu is-woofer gweithredol.
- Mewnbwn DC 19-35V: Mewnbwn pŵer ar gyfer y ampllewywr.
4.3 Cydrannau Mewnol
Image: Diagram illustrating the key internal components of the Nobsound A2 PRO, including the QCC3031 Bluetooth chip, TDA7498E Amp Chip, ESS9012K2M Decoding Chip, TI NE5532 Op Amps, and other circuit elements.
The Nobsound A2 PRO features advanced components for high-fidelity audio:
- QCC3031 Bluetooth Chip: Supports Bluetooth 5.0 with APTX-HD for high-resolution wireless audio.
- TDA7498E Amp Sglodion: Provides powerful and efficient amplification.
- ESS9012K2M Decoding Chip: Independent decoding chip for improved channel balance and reduced distortion.
- TI NE5532 Op Amps: High-performance operational amplifiers for enhanced sound quality.
5. Gosod
5.1 Cysylltu Siaradwyr
Connect your passive stereo speakers to the Speaker Output binding posts on the rear panel.
- Sicrhau y amplifier is powered off before connecting speakers.
- Match the positive (+) terminal of the amplifier to the positive (+) terminal of the speaker, and the negative (-) to the negative (-).
- Use appropriate gauge speaker wire. For optimal performance, 14-gauge wire is recommended for runs under 25 feet.
5.2 Cysylltu Ffynonellau Sain
Mae'r amplifier supports Bluetooth, AUX (3.5mm), and RCA inputs.
- Bluetooth: Screw the two provided antennas onto the RF connectors on the rear panel.
- Mewnbwn AUX: Connect your audio device (e.g., smartphone, MP3 player) to the 3.5mm AUX input using a 3.5mm audio cable.
- Mewnbwn RCA: Connect your audio device (e.g., CD player, TV, PC) to the RCA L/R inputs using an RCA cable.
5.3 Connecting an Active Subwoofer
If you have an active subwoofer, connect it to the SUB OUT RCA port on the rear panel using an RCA cable.
5.4 Pŵer Cysylltu
Connect the provided power adapter to the DC 19-35V input on the rear panel, then plug the adapter into a wall outlet.
6. Cyfarwyddiadau Gweithredu
6.1 Pŵer Ymlaen/Diffodd a Mud
Gwasgwch y PWR/MUTE button on the front panel to power on the amplifier. The working indicator lights will illuminate. Press again to mute the audio. Press and hold to power off the unit.
6.2 Dewis Mewnbwn
Gwasgwch y DETHOL button on the front panel to cycle through the available input sources: Bluetooth (BT), AUX, and RCA. The corresponding indicator light will show the active input.
6.3 Rheoli Cyfaint
Cylchdroi y VOL botwm clocwedd i gynyddu'r gyfrol ac yn wrthglocwedd i'w lleihau.
6.4 Rheoli Tôn
Cylchdroi y BAS knob to adjust the low-frequency output. Rotate the TRE knob to adjust the high-frequency output.
6.5 Pâr Bluetooth
- Ensure the Bluetooth antennas are securely attached.
- Select Bluetooth input using the DETHOL button. The BT indicator light will blink, indicating it is in pairing mode.
- On your audio device (e.g., smartphone), enable Bluetooth and search for available devices.
- Select "Nobsound A2 PRO" from the list of devices to pair.
- Once paired, the BT indicator light will remain solid. You can now play audio from your device through the ampllewywr.
Image: A smartphone displaying a music player interface, wirelessly connected to the Nobsound A2 PRO amplifier via Bluetooth, demonstrating the dual antenna design and APTX-HD support.
7. cynnal
- Glanhewch yr uned gyda lliain meddal, sych. Peidiwch â defnyddio glanhawyr hylif na aerosolau.
- Cadwch yr agoriadau awyru yn glir o lwch a malurion.
- Storio'r amplifier in a cool, dry place when not in use for extended periods.
8. Datrys Problemau
| Problem | Achos Posibl | Ateb |
|---|---|---|
| Dim pŵer | Power adapter not connected; power outlet faulty; amplifier i ffwrdd. | Check power connections; try a different outlet; press PWR/MUTE button. |
| Dim allbwn sain | Incorrect input selected; volume too low; speakers not connected properly; amplifier tawelu. | Press SELECT to choose correct input; increase volume; check speaker wiring; unmute ampllewywr. |
| Bluetooth ddim yn cysylltu | Amplifier not in pairing mode; device too far; antennas not attached. | Ensure BT input is selected and indicator is blinking; move device closer; attach antennas. |
| Sain gwyrgam | Volume too high; poor audio source quality; incorrect speaker impedance. | Reduce volume; try a different audio source; ensure speakers are compatible (4-8 Ohm). |
| Sŵn hymian neu suo | Ground loop issue; interference from other electronics; faulty cables. | Try plugging into a different outlet; move amplifier away from other devices; replace audio cables. |
9. manylebau
- Model: DZ069_US
- Brand: Douk Audio / Nobsound
- Pŵer Allbwn: 130W x 2 (into 4 Ohms)
- Nifer y sianeli: 2.0 (Stereo) with Subwoofer Output
- Mewnbwn Voltage: DC 19V-35V (Power adapter included: 32V/5A)
- Fersiwn Bluetooth: 5.0
- Sglodion Bluetooth: QCC3031 (supports APTX-HD)
- AmpSglodion Liifier: TDA7498E
- Decoding Chip: ESS9012K2M
- Op-Amps: TI NE5532
- Mewnbynnau Sain: Bluetooth, AUX (3.5mm), RCA
- Allbynnau Sain: Speaker Output (passive stereo), SUB OUT (active subwoofer)
- Math Mowntio: Yn sefyll ar ei ben ei hun
Image: The Nobsound A2 PRO amplifier positioned between two speakers and a subwoofer, illustrating its strong output capability of 130W + 130W and its ability to connect to a 2.1 channel system.
10. Gwarant a Chefnogaeth
Douk Audio products are designed for reliability and performance. For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official Douk Audio websafle. Cadwch eich prawf prynu ar gyfer unrhyw hawliadau gwarant.