1. Įvadas
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. Saugos priemonės
- Saugokite įrenginį nuo drėgmės, lietaus ar ekstremalių temperatūrų.
- Nestatykite prietaiso šalia šilumos šaltinių arba tiesioginiuose saulės spinduliuose.
- Naudokite tik pateiktą maitinimo adapterį.
- Nebandykite patys atidaryti ar taisyti įrenginio. Visus techninės priežiūros darbus patikėkite kvalifikuotiems specialistams.
- Užtikrinkite tinkamą vėdinimą aplink įrenginį.
3. Pakuotės turinys
Išpakuodami patikrinkite pakuotės turinį. Jei trūksta kokių nors daiktų arba jie pažeisti, susisiekite su pardavėju.
- 1 x Sound Decoder Unit
- 1x nuotolinio valdymo pultas
- 1 x Optical Sound Cable
- „1 x“ antena
- 1x maitinimo adapteris
- 1 x Coaxial Sound Cable
- 1x USB laidas
- 1 x naudojimo instrukcija

3.1 pav.: Produkto pakuotės turinys.
4. Produktas baigtasview
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 Priekinio skydelio valdikliai ir indikatoriai

Image 4.1: Front panel layout with controls and indicators.
- Maitinimo rankenėlė: Įjungia / išjungia įrenginį ir reguliuoja garsumą.
- USB2.0 Input Port: Skirta USB atmintinėms prijungti.
- Infrared Receiving Port: Nuotolinio valdymo signalams.
- Įvesties indikatoriai: LEDs for ARC, Coaxial, Optical, PC-USB, USB modes.
- 5.1 Mode Indicator: Lights up when 5.1CH output is active.
- Sumažinti garsumą / ankstesnė daina: Sumažina garsumą arba peršoka prie ankstesnio takelio.
- Padidinti garsumą / kita daina: Padidina garsumą arba peršoka prie kito takelio.
- Input Source Switch Button/Standby Button: Cycles through input sources or puts the device in standby.
4.2 Galinio skydelio jungtys

Image 4.2: Rear panel layout with input and output ports.
- DC 7-40V Power Inlet: Jungiamas prie maitinimo adapterio.
- 5.1CH Analog Outputs (FL, FR, SL, SR, CEN, SW): Connect to a 5.1 channel ampkeltuvai arba aktyvūs garsiakalbiai.
- Koaksialinė įvestis: Skaitmeniniams koaksialiniams garso šaltiniams.
- Optinė įvestis: Skaitmeniniams optiniams garso šaltiniams.
- Kompiuterio USB įvestis: Connects to a computer for audio input.
- HDMI Input (ARC): For HDMI audio input with Audio Return Channel support.
- Antenos prievadas: For Bluetooth antenna connection.
5. Sąranka
Follow these steps to connect your Dpofirs 5.1CH HDMI Audio Extractor to your audio system.
5.1 Sujungimo schema

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 ampgyvesnis.
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 Maitinimo jungtis
- Connect the provided power adapter to the DC 7-40V power inlet on the rear panel of the decoder.
- Įkiškite maitinimo adapterį į tinkamą maitinimo lizdą.
6. Naudojimo instrukcijos
This section details how to use the Dpofirs 5.1CH HDMI Audio Extractor with various input sources.
6.1 Bendras veikimas
- 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 USB Flash Drive Playback
- 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. Priežiūra
- Prietaisą valykite minkštu, sausu skudurėliu. Nenaudokite skystų ar aerozolinių valiklių.
- Saugokite įrenginį nuo dulkių ir šiukšlių.
- Laikykite prietaisą vėsioje, sausoje vietoje, kai jo ilgesnį laiką nenaudojate.
8. Problemų sprendimas
| Problema | Galima priežastis | Sprendimas |
|---|---|---|
| Nėra galios | Maitinimo adapteris neprijungtas arba sugedęs. | Ensure the power adapter is securely connected and plugged into a working outlet. Test with another adapter if available. |
| Nėra garso išvesties | 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. |
| Nuotolinio valdymo pultas neveikia | 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. Specifikacijos
| Funkcija | Detalė |
|---|---|
| Modelis | RH 688X |
| Medžiaga | Metalas |
| HDMI versijų palaikymas | 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 | 6 Gbps |
| Palaikomi garso formatai | DTS, DTS ES, AC3, FLAC, APE, WAV, HDCD, AAC, WMV, MP3, M4A, etc. |
| Samplingo norma | 24 bitų 192KHz |
| 5.1 Analoginė išvestis | ≥ 2V RMS (1KHz at 0dB) |
| Signalo ir triukšmo santykis | ≥90dB |
| Iškraipymas | ≤0.03 % |
| Dažnio atsakas | 20Hz ~ 20KHz |
| Bluetooth priėmimo atstumas | ≤15m / 49.2 feet |
| Nuotolinio valdymo pulto baterija | 2 x AAA alkaline batteries (sold separately) |
| Spalva | Juoda |
| Uostai | 7 (HDMI, USB, Optical, Coaxial, 5.1 Analog Out) |
10. Garantija ir palaikymas
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official Dpofirs websvetainėje. Išsaugokite pirkimo įrodymą garantiniams reikalavimams.