1. Wprowadzenie
The Douk Audio VU22 is a dual analog VU meter designed for precise sound level monitoring. It features multiple audio input options, adjustable display settings, and a robust all-metal construction. This manual provides essential information for setting up, operating, and maintaining your VU22 unit.
2. Informacje dotyczące bezpieczeństwa
- Ensure the unit is powered by a separate DC 5V (≥1A) USB power supply. Do not use USB ports from computers or share power with audio sources to avoid common ground noise.
- Avoid connecting RCA and 3.5mm AUX inputs simultaneously, as they are in parallel and will work concurrently, potentially causing audio mixing issues.
- Trzymaj urządzenie z dala od wody i nadmiernej wilgoci.
- Nie próbuj samodzielnie demontować ani naprawiać urządzenia. Skontaktuj się z wykwalifikowanym personelem serwisowym.
- Należy używać wyłącznie wskazanego zasilacza i kabli.
3. Zawartość opakowania
- 1x Douk Audio VU22 VU Meter
- 1x USB Cable (Power adapter not included)
- 4x gumowe nóżki
- 1x Instrukcja obsługi
4. Koniec produktuview
Panel przedni

Obraz: Przód view of the Douk Audio VU22, showing the dual analog VU meters, Power button, Color button, Gain button, and Light button.
- Przycisk zasilania: Włącza/wyłącza urządzenie.
- Kolorowy przycisk: Cycles through various backlight colors for the VU meters.
- Gain Button: Adjusts the sensitivity of the VU meter pointers.
- Przycisk światła: Dostosowuje poziom jasności podświetlenia.
- Podwójne analogowe mierniki VU: Displays real-time audio levels.
Panel tylny

Obraz: Tył view of the Douk Audio VU22, showing RCA and 3.5mm AUX input/output ports, a microphone input, a Mode knob, and a DC 5V Type-C power input.
- Audio Input (RCA / 3.5mm AUX / Microphone): Connect your audio source here. Note that RCA and 3.5mm AUX inputs are in parallel.
- Audio Output (RCA / 3.5mm AUX): Połącz się ze swoim amplifier or active speakers, or other audio receiving device.
- Pokrętło trybu: Selects between Line input and Microphone input.
- Wejście DC 5V (typ C): Moc wejściowa urządzenia.
5. Konfiguracja
- Podłączenie zasilania: Connect the provided USB cable to the DC 5V Type-C input on the rear panel. Connect the other end to a dedicated DC 5V (≥1A) USB power adapter (not included). Avoid using computer USB ports or shared power supplies to prevent noise.
- Wejście audio:
- For line-level audio sources (e.g., CD player, computer, phone), connect using either the stereo RCA or 3.5mm AUX input.
- For microphone pickup, ensure the Mode knob is set to MIC.
Important: Do not connect RCA and 3.5mm AUX inputs simultaneously.
- Wyjście audio: Connect the stereo RCA or 3.5mm AUX output to your amplifier, głośniki aktywne lub inne urządzenie odbierające dźwięk.
- Umieszczenie: Place the VU22 on a stable, flat surface. Attach the included rubber feet to the bottom of the unit to prevent slipping and protect surfaces.

Image: The Douk Audio VU22 connected to a laptop and speakers, demonstrating wired audio input and output connections.
6. Instrukcja obsługi
- Włączanie/wyłączanie: Press the Power button on the front panel to turn the unit on or off.
- Wybór wejścia: Use the Mode knob on the rear panel to select between Line input (for RCA/AUX) or Microphone input.
- Adjusting Display Color: Press the Color button on the front panel to cycle through different backlight colors for the VU meters.
- Regulacja jasności: Press the Light button on the front panel to adjust the brightness level of the backlight.
- Adjusting Gain (Sensitivity): Use the Gain button on the front panel to adjust the sensitivity of the VU meter pointers. This allows you to fine-tune the swing range of the pointers to match your audio signal levels for optimal visual effect.

Image: The Douk Audio VU22 displaying various backlight colors and brightness levels, illustrating customization options.
7. Funkcje
- Wired and Wireless Audio Inputs: Supports stereo RCA, 3.5mm AUX audio input, and microphone pickup. Compatible with various audio devices like phones, computers, CD players, and speakers.
- High-Impedance Input Circuit: Features a 100K high-impedance input circuit to ensure clean sound without audio rendering when using line inputs.
- Możliwość dostosowania wyświetlacza: Adjustable backlight color and light level to match different audio setups and environments.
- Advanced AGC Algorithm: Automatic Gain Control (AGC) ensures optimal visual effects across a wide range of input signal levels, preventing no display with low signals and full-screen display with high signals.
- Regulacja wzmocnienia: Allows users to set the swing range of the pointer for better beating effects and control over various input signals.
- Trwała konstrukcja: All-metal case with a CNC machined panel, solid stepless adjustment knob, and gold-plated interfaces for tight connections and smooth, lossless audio signal transmission.

Image: The Douk Audio VU22 in an audio setup, highlighting the AGC mode for optimal display across varying signal strengths.
8. Rozwiązywanie Problemów
- Common Ground Noise: If you experience humming or noise, ensure the VU22 is powered by a separate USB power supply and not sharing power with the audio source or connected to a computer's USB port.
- No Display/Incorrect Display:
- Check all audio connections to ensure they are secure.
- Verify the Mode knob is set correctly (Line for RCA/AUX, MIC for microphone).
- Adjust the Gain button to increase sensitivity if the signal is too low.
- Miksowanie dźwięku: Ensure only one line-level input (RCA or 3.5mm AUX) is connected at a time, as they operate in parallel.
9. Specyfikacje
| Parametr | Wartość |
|---|---|
| Wejście audio | Stereo RCA / 3.5mm AUX / Microphone |
| Wyjście audio | Stereo RCA / 3.5mm AUX |
| Impedancja wejściowa | 100 tys. |
| Wejście Voltage | 0.1-2 Vrms |
| Odpowiedź częstotliwościowa | 5Hz-20KHz |
| Objętość roboczatage | DC 5V (≥1A) |
| Interfejs zasilania | USB (typ C) |
| Średnica miernika VU | 45mm |
| Wymiary (szer.*gł.*wys.) | 177*115*59mm / 6.97*4.53*2.32in |
| Masa netto | 661g / 1.46 funta |
| Producent | Douk Audio |
| Numer modelu | VU22 |
| Data pierwszej dostępności | 22 lipca 2022 r. |
10. Konserwacja
- Czyść urządzenie miękką, suchą ściereczką. Nie używaj płynnych środków czyszczących ani aerozoli.
- Unikaj wystawiania urządzenia na działanie ekstremalnych temperatur i bezpośredniego światła słonecznego.
- Przechowywać w chłodnym i suchym miejscu, jeżeli produkt nie będzie używany przez dłuższy czas.
11. Gwarancja i wsparcie
For warranty information and technical support, please refer to the Douk Audio official webOdwiedź witrynę lub skontaktuj się ze sprzedawcą. Zachowaj paragon zakupu na wypadek reklamacji.
12. Powiązane filmy o produktach
Below are official product videos from the seller demonstrating various features and uses of Douk Audio products, including the VU22.
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Upgraded EQ5 Tone 5-Band Bluetooth EQ Equalizer with VU Meter
An updated version of the EQ5 Tone 5-Band Bluetooth EQ Equalizer with a VU meter is shown, highlighting its enhanced features and performance in an audio setup.
Douk Audio VU102 Speaker Amplifier Switch with VU Meter
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T5c Tube Preamp Słuchawki Amp Selector with Vu Meter
Pokaz wideoasing the T5c Tube Preamp, which also functions as a headphone amplifier selector with an integrated VU meter, demonstrating its audio processing and visual feedback.





