1. Pengenalan
This manual provides detailed instructions for the installation, operation, and maintenance of your Dpofirs 5.1CH HDMI Audio Extractor and Digital Sound Decoder. Please read this manual thoroughly before use to ensure proper functionality and to prevent damage to the device.
2. Langkah-langkah Keselamatan
- Jangan dedahkan peranti kepada kelembapan, hujan atau suhu yang melampau.
- Elakkan meletakkan peranti berhampiran sumber haba atau di bawah cahaya matahari langsung.
- Gunakan hanya penyesuai kuasa yang disediakan.
- Jangan cuba membuka atau membaiki peranti sendiri. Rujuk semua servis kepada kakitangan yang berkelayakan.
- Pastikan pengudaraan yang betul di sekeliling peranti.
3. Kandungan Pakej
Sila semak kandungan bungkusan semasa membuka bungkusan. Jika terdapat barang yang hilang atau rosak, hubungi peruncit anda.
- 1 x Sound Decoder Unit
- 1 x Alat Kawalan Jauh
- 1 x Optical Sound Cable
- 1 x Antena
- 1 x Penyesuai Kuasa
- 1 x Coaxial Sound Cable
- 1 x Kabel USB
- 1 x Manual Arahan

Imej 3.1: Kandungan pakej produk.
4. Produk Lebihview
The Dpofirs 5.1CH HDMI Audio Extractor and Digital Sound Decoder is designed to convert various digital audio signals into 5.1 independent analog output channels. It supports multiple input sources and audio formats, providing a versatile solution for home theater and gaming audio setups.
4.1 Kawalan dan Penunjuk Panel Hadapan

Image 4.1: Front panel layout with controls and indicators.
- Tombol Kuasa: Menghidupkan/mematikan peranti dan melaraskan kelantangan.
- USB2.0 Input Port: Untuk menyambung pemacu kilat USB.
- Infrared Receiving Port: Untuk isyarat kawalan jauh.
- Penunjuk Input: LEDs for ARC, Coaxial, Optical, PC-USB, USB modes.
- 5.1 Mode Indicator: Lights up when 5.1CH output is active.
- Kelantangan Kurang/Lagu Sebelumnya: Mengurangkan kelantangan atau melangkau ke trek sebelumnya.
- Kelantangan Naik/Lagu Seterusnya: Meningkatkan kelantangan atau melangkau ke trek seterusnya.
- Input Source Switch Button/Standby Button: Cycles through input sources or puts the device in standby.
4.2 Sambungan Panel Belakang

Image 4.2: Rear panel layout with input and output ports.
- DC 7-40V Power Inlet: Menyambung kepada penyesuai kuasa.
- 5.1CH Analog Outputs (FL, FR, SL, SR, CEN, SW): Connect to a 5.1 channel amppembesar atau pembesar suara aktif.
- Input sepaksi: For digital coaxial audio sources.
- Input Optik: For digital optical audio sources.
- Input PC-USB: Connects to a computer for audio input.
- HDMI Input (ARC): For HDMI audio input with Audio Return Channel support.
- Port Antena: For Bluetooth antenna connection.
5. Persediaan
Follow these steps to connect your Dpofirs 5.1CH HDMI Audio Extractor to your audio system.
5.1 Skema Sambungan

Image 5.1: General connection diagram for the audio extractor.
5.2 Connecting to a 5.1 Amplifier (Old Amplifier Connection Method)
- Connect the 5.1CH analog outputs (FL, FR, SL, SR, CEN, SW) from the decoder to the corresponding 5.1CH analog inputs on your amplifier using 6 RCA to RCA cables.
- Ensure each channel (Front Left, Front Right, Surround Left, Surround Right, Center, Subwoofer) is correctly matched.

Image 5.2: Connecting to a 5.1 channel amplebih hidup.
5.3 Connecting to 5.1 Active Speakers
- Connect the 5.1CH analog outputs from the decoder to your 5.1 active speakers using appropriate 3.5mm to RCA cables (typically 3 cables for 6 channels).
- Match the FL/FR, SL/SR, and C/SW outputs to the corresponding inputs on your active speaker system.

Image 5.3: Connecting to 5.1 active speakers.
5.4 Sambungan Kuasa
- Connect the provided power adapter to the DC 7-40V power inlet on the rear panel of the decoder.
- Palamkan penyesuai kuasa ke dalam salur keluar kuasa yang sesuai.
6. Arahan Operasi
This section details how to use the Dpofirs 5.1CH HDMI Audio Extractor with various input sources.
6.1 Operasi Am
- Turn on the decoder by rotating the Power Knob on the front panel.
- Use the Input Source Switch Button on the front panel or the remote control to select the desired input source (HDMI, Optical, Coaxial, PC-USB, USB). The corresponding indicator LED will light up.
- Adjust the volume using the Volume Up/Down buttons on the front panel or the remote control.
6.2 Main Semula Pemacu Kilat USB
- For first-time use, it is recommended to format your USB flash drive.
- Insert the USB flash drive into the USB2.0 input port on the front panel.
- Switch to the corresponding USB input mode via the knob button or remote control. The USB indicator will light up.
- Use the Previous/Next Song buttons on the front panel or remote to navigate tracks.

Image 6.1: USB flash drive connection and operation.
6.3 PC USB Audio Input
- Connect any USB port of your computer to the PC-USB port on the rear panel of the decoder using the provided USB cable. The built-in USB sound card may require driver installation on your computer.
- On your computer, select the decoder as the sound card output device.
- Switch the decoder to the PC-USB input mode via the knob button or remote control. The PC-USB indicator will light up.

Image 6.2: PC USB audio connection and operation.
6.4 Sound Output Modes
- The decoder automatically detects and identifies the input digital sound signal format.
- If the source is 5.1CH, it performs hard decoding (real 5.1 output).
- If the source is 2.0CH or 2.1CH, it performs soft decoding (virtual 5.1 output).
- Supports both 2.0CH and 5.1CH output modes. In 2.0CH mode, only FL (Front Left) and FR (Front Right) outputs are active.
7. Penyelenggaraan
- Bersihkan peranti dengan kain lembut dan kering. Jangan gunakan pembersih cecair atau aerosol.
- Pastikan peranti bebas daripada habuk dan serpihan.
- Simpan peranti di tempat yang sejuk dan kering apabila tidak digunakan untuk tempoh yang lama.
8. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Tiada kuasa | Penyesuai kuasa tidak disambungkan atau rosak. | Ensure the power adapter is securely connected and plugged into a working outlet. Test with another adapter if available. |
| Tiada output audio | Incorrect input source selected; cables loose or faulty; amplifier/speakers off or muted; incorrect audio format. | Verify the correct input source is selected. Check all cable connections. Ensure your amplifier/speakers are powered on and not muted. Confirm the input audio format is supported. |
| No 5.1 surround sound | Input source is 2.0CH; amplifier/speakers not configured for 5.1CH; incorrect connections. | Ensure your audio source is providing a 5.1CH signal. Verify your amplifier/active speakers have 5.1 input ports and are correctly configured. Double-check all 6 analog output connections. |
| Alat kawalan jauh tidak berfungsi | Batteries low or incorrectly inserted; obstruction between remote and device. | Replace remote control batteries (2 AAA alkaline batteries). Ensure there is a clear line of sight to the infrared receiving port. |
9. Spesifikasi
| Ciri | Perincian |
|---|---|
| Model | RH 688X |
| bahan | logam |
| HDMI Version Support | HDMI 2.0b (compatible with HDMI 1.4) |
| HDCP Version Support | HDCP 2.3 (compatible with HDCP 2.2, HDCP 1.4) |
| HDMI Resolution Support | 4Kx2K, 1080p, 1080i, 720p, 576p, 576i, 480p, 480i at 24/50/60fs |
| HDMI Max Data Rate | 6Gbps |
| Format Audio yang Disokong | DTS, DTS ES, AC3, FLAC, APE, WAV, HDCD, AAC, WMV, MP3, M4A, etc. |
| SampKadar ling | 24bit 192KHz |
| 5.1 Output Analog | ≥ 2V RMS (1KHz at 0dB) |
| Nisbah Isyarat-ke-Bunyi | ≥90dB |
| herotan | ≤0.03% |
| Respons Kekerapan | 20Hz ~ 20KHz |
| Jarak Penerimaan Bluetooth | ≤15m / 49.2 feet |
| Bateri Kawalan Jauh | 2 x AAA alkaline batteries (sold separately) |
| warna | Hitam |
| Pelabuhan | 7 (HDMI, USB, Optical, Coaxial, 5.1 Analog Out) |
10. Waranti dan Sokongan
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official Dpofirs webtapak. Simpan bukti pembelian anda untuk tuntutan waranti.