1. Úvod
The BOYA BY-WM8 Pro-K2 is a UHF Dual-Channel Wireless Lavalier Microphone System designed for capturing audio with dual subjects. It is suitable for a wide range of wireless applications including interviews, electronic news gathering (ENG), electronic field productions (EFP), film production, business, and educational applications. This system provides reliable and high-quality audio transmission for professional use.

Figure 1.1: BOYA BY-WM8 Pro-K2 System in a typical smartphone recording setup.
2. Obsah balení
The BOYA BY-WM8 Pro-K2 system includes the following components:
- Two (2) Bodypack Transmitters
- One (1) Camera-Mount Receiver
- Two (2) Omnidirectional Lavalier Microphones
- One (1) Shoe-Mount Adapter
- One (1) 1/8" (3.5mm) TRS to XLR Output Cable
- One (1) 1/8" (3.5mm) TRS to 1/8" (3.5mm) TRS Output Cable
- Jedno (1) pouzdro
- Six (6) AA Batteries (required for operation)
- Záruční list

Figure 2.1: Complete package contents of the BY-WM8 Pro-K2 system.
Rozbalení a konecview Video
Video 2.1: Rozbalení a konecview of the BOYA BY-WM8 Pro-K2 system, demonstrating its components and initial setup.
3. Komponenta přesview
3.1. Vysílače (TX)
The system includes two bodypack transmitters. Each transmitter features an LCD screen for displaying channel information, battery status, and other settings. They are equipped with a 3.5mm input for connecting the lavalier microphone.
3.2. Přijímač (RX)
The camera-mount receiver is designed to attach to your camera's hot shoe or cold shoe via the included adapter. It has a dual-channel capability, allowing it to receive signals from both transmitters simultaneously. The receiver also features an LCD screen for monitoring and a 3.5mm headphone output for real-time audio monitoring.

Figure 3.1: Easy-to-read LCD display on a BOYA BY-WM8 Pro unit.

Figure 3.2: Detail of the 3.5mm monitor/earphone connector on the receiver.
4. Průvodce nastavením
4.1. Instalace baterie
- Open the battery compartment cover on each transmitter and the receiver.
- Vložte dvě (2) baterie typu AA do každé jednotky a dbejte na správnou polaritu.
- Bezpečně zavřete kryt bateriového prostoru.
4.2. Connecting Lavalier Microphones
Connect the 3.5mm plug of the omnidirectional lavalier microphone into the 'MIC IN' port on each transmitter. Secure the microphone to the subject's clothing using the included clip.
4.3. Connecting to Recording Devices
The BY-WM8 Pro-K2 offers versatile connectivity:
- Pro digitální zrcadlovky/videokamery: Use the supplied 1/8" (3.5mm) TRS to 1/8" (3.5mm) TRS output cable. Connect one end to the 'LINE OUT' port on the receiver and the other end to the microphone input of your camera.
- Pro chytré telefony (iPhone/Android): Use a 1/8" (3.5mm) TRRS output cable (sold separately or included in some kits) to connect the receiver's 'LINE OUT' to your smartphone's headphone/microphone jack. For iPhones without a 3.5mm jack, an official Lightning to 3.5mm adapter is required.
- For Professional Audio Recorders: Use the supplied 1/8" (3.5mm) TRS to XLR output cable. Connect the 3.5mm end to the 'LINE OUT' of the receiver and the XLR end to an XLR input on your audio recorder.

Figure 4.1: Device compatibility with the BY-WM8 Pro system.
Setup and Features Video
Video 4.1: A detailed look at the setup and features of the WM8 PRO-K2 Microphone system.
5. Návod k obsluze
5.1. Zapnutí/vypnutí
To power on each unit (transmitter or receiver), press and hold the power button until the LCD screen illuminates. To power off, press and hold the power button again until the screen turns off.
5.2. Výběr kanálu
The system offers 48 channels. To change the channel on a transmitter or receiver:
- Press the 'SET' button to enter the channel selection mode.
- Use the '+' or '-' buttons to navigate through the available channels.
- Press 'SET' again to confirm your selection. Ensure the transmitter and receiver are set to the same channel for proper operation.
5.3. Funkce ztlumení
On the transmitter, a dedicated mute function allows you to temporarily silence the microphone input without powering off the unit. Refer to the LCD display for mute status.
5.4. LCD Lock Function
The LCD will automatically lock after 30 seconds of inactivity to prevent accidental changes. To unlock, long press the '+' and '-' buttons simultaneously.

Figure 5.1: Automatic LCD-locked function and unlocking instructions.
5.5. Monitorování zvuku
Connect headphones to the 3.5mm 'PHONE' output on the receiver to monitor the audio in real-time. This allows you to ensure optimal sound quality and detect any potential issues during recording.

Figure 5.2: Monitoring audio via the receiver's headphone output.
6. Řešení problémů
- Žádný zvuk:
- Ensure all units (transmitters, receiver, recording device) are powered on.
- Ověřte, zda jsou vysílač a přijímač nastaveny na stejný kanál.
- Zkontrolujte stav baterie a v případě nízkého nabití ji vyměňte.
- Confirm all cables are securely connected and are the correct type (TRS for camera, TRRS for smartphone).
- Adjust volume levels on both the receiver and your recording device.
- Špatná kvalita zvuku/rušení:
- Change to a different channel to avoid interference from other wireless devices.
- Ensure the operating range (up to 100m/300ft without obstacle) is not exceeded.
- Minimize obstacles between the transmitter and receiver.
- Check microphone placement and ensure it is not rubbing against clothing.
- Receiver Auto Shut-Off:
- To může znamenat nízký stav baterie. Vyměňte baterie.
- Ensure the unit is not in a power-saving mode that might be causing unexpected shutdowns.
7. Specifikace
| Funkce | Specifikace |
|---|---|
| Tvarový faktor mikrofonu | Lavalier |
| Rozměry položky (D x Š x V) | 8.27 x 3.15 x 1.18 palce |
| Zdroj napájení | Napájení bateriemi (vyžadují 6 baterie AA) |
| Materiál | Acrylonitrile Butadiene Styrene, Aluminum, PVC |
| Odstup signálu od šumu | 80 dB |
| Hardwarová platforma | Camcorder, Camera, IPHONE |
| Počet kanálů | 48 |
| Frekvenční odezva | 18 kHz |
| Hmotnost položky | 7.1 unce (200 gramů) |
| Polární vzor | Všesměrový |
| Audio Citlivost | 30 decibelů |
| Technologie připojení | Pomocný, XLR |
| Kompatibilní zařízení | Videokamera, fotoaparát, smartphone |
8. Údržba
To ensure the longevity and optimal performance of your BOYA BY-WM8 Pro-K2 system, follow these maintenance guidelines:
- Keep the units clean by wiping them with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Store the system in its protective carrying case when not in use to prevent dust and physical damage.
- Pokud nebudete jednotky delší dobu používat, vyjměte je z nich, abyste zabránili jejich vytečení a poškození.
- Nevystavujte jednotky extrémním teplotám, vlhkosti nebo přímému slunečnímu záření.
9. Záruka a podpora
The BOYA BY-WM8 Pro-K2 system comes with a One Year BOYA Warranty. For warranty claims, technical support, or service inquiries, please refer to the contact information provided on your warranty card or visit the official BOYA webmísto.





