The wireless microphone WM40U operates in the UHF frequency range. The wireless transmission range of the microphone is up to 40 metres.
Thanks to the included signal receiver, terminated with a universal 6.3 mm jack connector, this device can be connected to all portable speakers equipped with a microphone input or devices with a short-range wired microphone.
The supplied adapter can be used if the external audio device has a 3.5 mm standard microphone jack.
Once the signal receiver is connected to the speaker and the microphone is switched on, the devices will automatically pair with each other and be ready for use.
The microphone has a high-frequency response ranging from 65Hz to 18kHz, providing very good, detailed sound.
The Blaupunkt WM40U wireless microphone operates on a UHF frequency, which is the most suitable for this type of device. Since UHF waves propagate mainly in line of sight, the microphone can be used in open spaces, but at the same time the signal transmission remains strong enough that building walls are not an obstacle to it, which allows the microphone to be used indoors as well.
Ultra-high-frequency transmission allows very good quality of the transmitted signal with a relatively short antenna. For this reason, the receiver built into the microphone is very practical and convenient, with a maximum operating range of approximately 40 metres.
The microphone is powered by standard AA batteries. Batteries are included and allow continuous use of the microphone for about 3 hours.
The signal receiver is equipped with a 1200 mAh lithium-ion rechargeable battery, which allows continuous use for up to approximately 7 hours.
The receiver has a built-in micro USB socket for charging the battery, so it can be charged quickly with a universal charger, for example for a phone that has a charging current of 5V/1A.
The charging status and full charge are indicated by an LED light built into the receiver.
WM40U supports 16 channels in the UHF frequency band from 640 MHz to 647.5 MHz. This is the most optimal frequency band for this type of equipment.
The device automatically changes channel when it detects interference or another device transmitting on the same frequency. This allows trouble-free and continuous operation under various conditions.
WM40U is an extremely lightweight microphone weighing only 155 g, while being made of high-quality materials.
The shape and diameter of the body are appropriately designed to provide a comfortable grip and a way to hold the microphone correctly.
In the centre of the body are a sliding on/off switch for the microphone and a display showing that the device is ready for use.
The movable bottom cover of the body allows easy access to the batteries when replacement is needed.
The microphone head is made of sturdy mesh and lined with sponge on the inside, protecting the microphone from dust and moisture and providing basic wind protection.
- Frequency response: 65 Hz-18 kHz;
- Signal-to-noise ratio (S/N): >85 dBA;
- UHF frequency band: 640 MHz-647.5 MHz;
- THD: <0.3 %;
- Transmitter radiated power: <10 m W;
- Receiver input: 1/4? (6.3 mm) unbalanced;
- Maximum receiver output level: 120 dBV;
- Receiver rechargeable battery: lithium-ion 3.7 V, 1200 mAh;
- Receiver charging time: 2-3 hours at 5 V/1 A;
- Receiver battery playback time: up to 7 hours;
- Microphone battery: 2 x AA alkaline (included);
- Microphone battery playback time: up to 3 hours;
- Microphone dimensions: 230 x 49 x 49 mm;
- Receiver: 25 x 56 x 120 mm.
