U-MIC-864.8-L - Microphone Qtx - Free user manual and instructions
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| Product Type | UHF Wireless Microphone System |
| Model | U-MIC-864.8-L |
| Brand | Qtx |
| Number of Channels | 8 |
| Frequency Range | 864 MHz (UHF) |
| Transmission Type | Digital / Analog |
| Microphone Type | Handheld / Lavalier (depending on variant) |
| Power Supply (Receiver) | DC 12V / 500mA (AC adapter included) |
| Power Supply (Transmitter) | 2 x AA batteries per microphone |
| Dimensions (Receiver) | 210 x 45 x 130 mm |
| Weight (Receiver) | 0.5 kg |
| Weight (Transmitter) | 0.3 kg (including batteries) |
| Audio Output | Unbalanced 6.3mm jack, balanced XLR |
| Operating Range | Up to 50 meters (line of sight) |
| Frequency Response | 80 Hz - 15 kHz |
| Signal-to-Noise Ratio | > 60 dB |
| THD | < 1% |
| Main Functions | Wireless audio transmission, multiple channel selection, volume control, AF/RF indicators |
| Care and Cleaning | Wipe with dry cloth; avoid moisture and extreme temperatures |
| Safety Instructions | Keep away from water; use only supplied power adapter; do not disassemble |
| Spare Parts and Repairability | Contact Qtx support for spare parts; do not attempt self-repair |
| General Information | Designed for karaoke, presentations, and small events |
Frequently Asked Questions - U-MIC-864.8-L Qtx
How do I pair the microphone with the receiver?
Ensure both the receiver and transmitter are powered on. The system is pre-paired from factory. If not, press the sync button on the receiver and then on the transmitter within 3 seconds. The RF indicator should light up solid.
What batteries does the microphone use?
Each handheld microphone requires 2 x AA alkaline batteries. Rechargeable NiMH batteries are also compatible but may have lower voltage. Ensure correct polarity when inserting.
Why is there no sound from the microphone?
Check that the mute switch on the microphone is off. Verify the receiver is powered and connected to your mixer/amplifier. Ensure the AF level is not set to minimum. Replace batteries if low.
Can I use multiple Qtx U-MIC-864.8-L systems together?
Yes, but you must set each system to a different frequency channel to avoid interference. The receiver has 8 selectable channels. Assign each system a unique channel.
What is the maximum operating range?
The maximum range is up to 50 meters in open line of sight. Walls and obstacles will reduce range. For best performance, ensure the receiver antenna is fully extended and positioned high.
How do I clean the microphone?
Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or submerge in water. For the mesh grille, gently brush with a soft brush to remove debris.
What is the frequency band of this system?
The system operates in the 864 MHz UHF band. Check local regulations to ensure this band is legal for wireless microphones in your country.
Can I connect the receiver directly to a computer?
Yes, using a 6.3mm to 3.5mm adapter or a USB audio interface. Plug the receiver's output into the computer's microphone input. You may need to adjust input settings on the computer.
Why does the audio have interference or noise?
Interference can come from other wireless devices, metal objects, or being too far from the receiver. Change the channel on both transmitter and receiver. Ensure the batteries are fresh and the antenna is unobstructed.
What does the AF and RF indicators mean?
RF (Radio Frequency) indicates signal strength between transmitter and receiver. Solid green means good connection. AF (Audio Frequency) indicates audio signal level; it should flicker with sound. No AF means no audio is being transmitted.
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USER MANUAL U-MIC-864.8-L Qtx
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Product information
Brand : Qtx
Model : U-MIC-864.8-L
Category : Microphone