BOYA BY-WM8 UHF Dual-Channel Wireless Microphone System

Introduction

Thanks for choosing BOYA! The BOYA BY-WM8 is an UHF Dual-Channel wireless microphone system, designed for ENG, EFP, DSLR video, and dual-Channel can work with two transmitters, perfect for interviews as well. The receiver and the transmitters are lightweight and simple menu to operate.

The BY-WM8 consists of two body-pack transmitters, a portable receiver, and their accessories as following:

Included Accessories:

• Omni-directional lavalier microphone (x2)
• Stereo 3.5mm mini plug cable
• XLR output cable
• Microphone Holder clip (x2)
• Wind screen (x2)
• Belt clip (x2)
• Shoe mount adapter

Transmitter A / Transmitter B

Diagram Description:

Diagram showing the body-pack transmitter. Labeled components include: 1. Antenna, 2. Line In port, 3. Microphone input (3.5mm jack), 4. Power/Mute button (long press for ON/OFF, short press for mute), 5. Power LED indicator (blue when on, red for low power).

Power LED Indicator Table:

Channel (CH) Indication:

Shows the transmission channel. Both transmitters can be used for Transmitter A or Transmitter B. Refer to page 15 for exchange instructions.

Battery Indication:

Shows the battery condition. A blinking battery icon indicates batteries are low and need immediate replacement. Note: Battery condition may not be accurate if batteries are not new. Replace with new batteries for long-term use.

Receiver

Diagram Description:

Diagram showing the receiver unit. Labeled components include: 1. Power OFF/ON button, 2. Battery compartment (holds two AA batteries), 3. Antenna, 4. Power LED (ANT-A) indicator, 5. Power LED (ANT-B) indicator, 6. Power LED (POWER) indicator (blue when on, red for low power). 7. CH (Channel) indication, 8. Battery indication.

Power LED Indicator Table:

Channel (CH) Indication:

Shows the transmission channel.

Battery Indication:

Shows the battery condition. A blinking battery icon indicates batteries are low and need immediate replacement. Note: Battery condition may not be accurate if batteries are not new. Replace with new batteries for long-term use.

Monitor Connector:

9. Monitor Connector (3.5mm diameter stereo mini jack): Connect headphones here to monitor receiver output. Do not use monaural mini jack headphones to avoid short-circuiting and distorted sound.

LINE OUT Connector:

10. LINE OUT (audio output) connector (3.5mm diameter stereo mini jack): Connect the supplied cable to this port and then to your camera, mixer, or amplifier's microphone input.

Buttons:

11. + (+ selection)/ (- selection) buttons: Used to set transmission channel, attenuation level, or STEREO/MONO mode. Refer to page 14 for details.

12. SET button: Press to change and enter display parameters. Refer to page 14 for details.

Shoe Mount Adapter:

13. Shoe mount adapter: For details, see "To attach the shoe mount adapter" on page 13.

Installing Batteries

Procedure:

The transmitters and receiver are powered by two AA batteries each. Follow these steps:

1. Turn OFF the units. Slide the battery-compartment catches inward (in the direction of the arrows [inward-arrow]).

2. Take out the battery holder.

3. Insert the batteries into the battery compartment, matching their polarities to the indications inside the compartment. Then, set the battery holder in the original position.

Notes on Battery Installation:

NOTE: Please make sure the units are turned OFF, as removing the battery compartment during signal transmission may cause high noise.

Battery Indication:

When you turn the power on, the battery condition is shown by the BATT indication in the display section. Check the expiration date on new batteries before use.

Notes on Battery Usage:

NOTE: The indicated battery condition may not be correct if the batteries were not new when installed. If you plan to use the units for a long period, it is recommended that you replace the batteries with brand new ones. Insufficient battery power can decrease the ability of transmitters and receiver. Therefore, make sure your batteries start out with a full charge when using this system, and always carry spare batteries.

Battery Care:

Notes on battery: Batteries may leak or explode if mistreated. Follow these instructions:

• Make sure to install batteries with correct polarity.
• Always replace two batteries together.
• Do not use different types of batteries or old and new ones together.
• When not using the components for a long period, remove the batteries to avoid leakage. If batteries leak, clean all leakage from the battery compartment and the component.

Leakage left in the compartment may cause poor battery contact. If there seems to be poor battery contact, consult your local dealer.

CAUTION:

Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by manufacturer. When disposing of batteries, obey local laws.

Attachment and Installation Procedures

Attaching the supplied accessories to the body-pack transmitter:

To attach the microphone:

Diagram showing microphone connection: Insert the microphone's 3.5mm plug into the microphone input port. Ensure it clicks into place and lock the connector cover. To remove, release the locking mechanism and pull the plug out.

To attach the wind screen to the microphone:

Diagram showing windscreen attachment: Place the wind screen over the microphone head.

To attach the holder clip to the microphone:

Diagram showing holder clip attachment: Push the holder clip against the bottom of the microphone until it clicks into place.

To remove the belt clip:

Diagram showing belt clip removal: Insert a pointed object (e.g., ballpoint pen) between the belt clip and the transmitter to create space, then remove the end of the clip from the hole on the side of the transmitter.

Reorienting the belt clip:

The BY-WM8's belt clip can be removed and reattached upside down. Follow these steps:

1. Push outward on one hinge of the belt clip to pop one side out.
2. Push the clip out from the other hinge to remove it completely.
3. Realign the belt clip with the body pack, facing the desired direction.
4. Insert the two-way belt clip into the body pack, one hinge at a time.

Attaching the supplied accessories to the body-pack transmitter:

Diagram showing connection to OUTPUT connector: Connect the supplied conversion cable to the OUTPUT connector.

To attach the shoe mount adapter:

Diagram showing shoe mount adapter attachment: Before attaching the shoe mount adapter, attach the belt clip. Then, slide the shoe mount adapter onto the transmitter/receiver.

Connecting the Transmitters and the Receiver

Procedure:

1. Connect lavalier microphones to transmitters' microphone inputs or plug a line-level source into line inputs. If connecting to a sound system, mute it. Do not monitor with headphones during setup. Mute sound systems and remove headphones when changing channels to avoid RF noise bursts.
2. Turn on the transmitters and the receiver.
3. Set transmitters and receiver to the same channel. If experiencing interference, try a different channel. (Note: Use different channels for multiple BY-WM8 systems to reduce intermodulation. If the receiver power indicator is blue, transmitters are connected; if red/off, they are disconnected. Refer to page 3 for details. Settings are stored automatically.)
4. With headphone volume low, plug headphones into the receiver and gradually raise the level for comfortable monitoring.

Initial Settings:

The default channel is "CH-1" and volume is "VOL-24" on both transmitters and receiver upon first use.

• Adjust channel as needed.
• Adjust volume to ensure the highest level without distortion for optimal signal-to-noise ratio.

5. Once transmission quality and level are good, mount the transmitter and receiver.

Important Notes for Channel Setup:

• When setting the transmission channel, the transmitter cannot be used to transmit signals.
• Do not remove batteries while setting the transmission channel.
• Ensure the selected channel is the same on all components of the system.

Setting up Channel, Volume, STEREO/MONO:

Set up Channel:

Turn on units. Display shows "CH". Press + to increase, to decrease channel. Long press +/- to auto-scroll.

Set up Volume:

Press "SET" button, display shows "VOL". Press + to increase, to decrease volume. Long press +/- to auto-scroll.

Volume Adjustment Details:

How to set "STEREO" and "MONO":

Press "SET" button, display shows "STEREO". Press + to change to "MONO". Press + again to return to "STEREO". Factory default is "STEREO". Changes are stored and applied upon next power-on.

How to change Transmitters A and B:

Both transmitters can be used as A or B.

To change Transmitter A to Transmitter B:

1. Set display to "CH-A-1".
2. Long press "SET" until display shows "CH-B-1". (This applies to any channel, e.g., CH-A-4 becomes CH-B-4).

To change Transmitter B to Transmitter A:

Repeat the same steps as above.

Troubleshooting

Troubleshooting Checklist:

If you encounter problems, use this checklist. For persistent issues, consult your local dealer or contact them directly.

Important Notes

Usage and storage:

• Operating the BY-WM8 components near electrical equipment (motors, transformers, or dimmers) may cause it to be affected by electromagnetic induction. Keep the BY-WM8 components as far from such equipment as possible.
• The presence of lighting equipment may produce electrical interference over the entire frequency range. Position the BY-WM8 components so that interference is minimized.
• To avoid degradation of the signal-to-noise ratio, DO NOT use the BY-WM8 components in noisy places or in locations subject to vibration, such as: Near electrical equipment, near air condition equipment or places subject to direct air flow, near public address loudspeakers, or where adjacent equipment might knock against the receiver. Keep BY-WM8 components as far from such equipment as possible or use buffering materials.

Cleaning:

Clean the surface and connectors of the BY-WM8 components with a dry, soft cloth. Never use thinner, benzene, alcohol, or other chemicals, as these may mar the finish.

Specifications

System:

• Oscillator type: PLL Synthesized Control Oscillator
• Carrier Frequency Range: 584 MHz-608 MHz (Transmitter A), 568.6MHz-599.9 MHz (Transmitter B)
• Channels: 48
• Frequency response: 60Hz-15 KHz+/-3 dB
• Operation range: 100m (300')(without obstacle)

Transmitter:

• RF output power: 20 mW
• Antenna: Flexible
• Spurious emission: 250 nW or less
• Audio input connector: 3.5mm mini jack
• Audio input level: 600 mV-2000 mV
• Reference deviation: 7KHz (-60 dBV, 1 KHz input)
• Input frequency range: 20 Hz-20 KHz
• Power supply: Two AA batteries
• Operation time: 6 hours
• Dimensions: (H x W x L) 7.0" x 2.6" x 1.1" (17.7 x 6.7 x 2.9 cm)
• Weight: 95g (3.4 oz) without batteries

Receiver:

• Antenna: Flexible
• Audio input connector: 3.5mm mini jack
• Signal-to-noise ratio: 80 dB
• Distortion: 0.8% (-60 dBV, 1 KHz input)
• Earphone output level: 60 mW, 32 Ohms/1KHz
• Audio output level: 120 mV
• Power supply: Two AA batteries
• Operation time: 6 hours
• Dimensions: (H x W x L) 7.7" x 3.1" x 1.1" (19.6 x 8.0 x 2.9cm)
• Weight: 130g (4.6 oz) without batteries

Lavalier Microphone:

• Transducer: Back electret Condenser
• Polar pattern: Omni-directional
• Frequency Range: 35Hz ~ 18 KHz
• Signal / Noise: 74dB SPL
• Sensitivity: -30dB +/-3dB / 0dB=1V/Pa, 1 kHz
• Connector: 3.5mm locking mini plug
• Length: 1.2m (4')

Maintenance and Declaration

Maintenance:

Website: www.boya-mic.com

1. Use caution with earphones to avoid hearing loss from excessive sound pressure.

2. Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to instructions.

3. EUT Operating temperature range: -20° C to 40° C.

4. To prevent possible hearing damage, do not listen at high volume levels for long periods.

Declaration of Conformity:

Boya Audio Equipment (Shenzhen) Co., Ltd. hereby declares that this UHF Dual-Channel Wireless Microphone System is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC. A copy of the original declaration of conformity may be found or obtained at http://www.boya-mic.com/

CE Logo Description: The CE mark indicates conformity with European Union directives.

FCC Statement:

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired operation.

Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

RF warning statement:

The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.