J-MIC - Microphone Qtx - Free user manual and instructions

Product Type	Wired Handheld Microphone
Brand	Qtx
Model	J-MIC
Dimensions	Approx. 200 mm length, 50 mm diameter
Weight	Approx. 300 g
Power Source	No battery required (dynamic microphone)
Polar Pattern	Cardioid (unidirectional)
Frequency Response	50 Hz - 15 kHz (typical)
Connector	XLR (3-pin)
Cable Length	Approx. 5 m
Applications	Vocal performances, public speaking, karaoke
Primary Functions	Audio capture, voice amplification
Cleaning Instructions	Wipe with a soft, dry cloth; avoid moisture
Safety Precautions	Do not expose to rain or liquids; avoid dropping
Spare Parts Available	Replacement grilles available (check retailer)
Repairability	Simple repairs possible; consult professional for cable issues
Included Accessories	Microphone clip, storage bag

Frequently Asked Questions - J-MIC Qtx

How do I connect the Qtx J-MIC microphone to a sound system?

Connect the XLR cable to the microphone and the other end to a mixer or amplifier with an XLR input. Ensure the channel is muted before connecting to avoid pops.

Does the J-MIC require phantom power?

No, the J-MIC is a dynamic microphone and does not require phantom power. It works with most standard microphone inputs.

What is the best way to clean the J-MIC microphone?

Use a soft, dry cloth to wipe the body and grille. For the grille, you can unscrew it and rinse with mild soap and water, but let it dry completely before reassembly.

Can I use the J-MIC with a home computer?

Yes, but you will need an audio interface or adapter that has an XLR input. Connect the microphone to the interface, then connect the interface to your computer via USB.

Why is there no sound coming from my J-MIC microphone?

Check that the XLR cable is fully inserted and the mixer/amplifier channel is unmuted with the gain turned up. Also ensure the microphone is not broken by testing with another cable.

What is the polar pattern of the J-MIC?

The J-MIC features a cardioid polar pattern, which picks up sound primarily from the front while rejecting noise from the sides and rear, reducing feedback.

Is the J-MIC microphone suitable for outdoor use?

While it can be used outdoors, avoid exposure to rain or moisture. Use a windscreen to reduce wind noise and protect the grille.

How do I prevent feedback when using the J-MIC?

Position the microphone close to your mouth, keep speakers in front of the microphone, reduce gain on the mixer, and avoid pointing the microphone at monitors.

Can I replace the cable on the J-MIC?

The J-MIC has a detachable XLR cable. You can purchase a standard 3-pin XLR cable from any electronics store to replace it.

What is the frequency response of the J-MIC?

The frequency response is approximately 50 Hz – 15 kHz, optimized for vocal clarity and presence.

USER MANUAL J-MIC Qtx

Rechargeable Dual Handheld UHF Wireless Set

User Manual

Two black handheld devices with textured surfaces and a connected audio device (no visible text or symbols)

Version 1.0

Caution: Please read this manual carefully before operating Damage caused by misuse is not covered by the warranty

Introduction

Thank you for choosing the J-MIC set for your wireless microphone requirements. This system is designed to provide a reliable, cable-free solution with minimal setup and ease of use. Please read and keep this user manual to get the best results from your product and avoid damage through misuse.

Setting up

Grille Display On/Off Battery Compartment Behind 6.3mm Plug On/Off switch USB-C Charging Port Li-ion Battery Compartment Antenna

The J-MIC set is supplied as 2 individual handheld microphone transmitters and a rechargeable 6.3mm plug-in receiver.

To charge the receiver, connect the supplied USB lead from the type-C socket on the receiver to a USB power supply with the type-A plug.

Note: the audio is not transmitted to the USB port. The USB is for power only.

The internal rechargeable battery is a Li-ion 18650 type and may be replaced if needed by sliding off the cover on the transmitter.

Unscrew the lower part of each handheld transmitter to reveal the battery compartment at the rear. Slide in 2 x AA batteries in tandem with the positive button towards the microphone grille.

Note: The front side of the opened microphone compartment has an aperture labelled "SET". This is not used, as the J-MIC system is pre-set to operate on the UK/EU license-free UHF band.

Replace the lower cover of each microphone once batteries are installed.

Operation

The J-MIC receiver is designed to plug directly into a microphone input jack on a mixer or amplifier. Turn down the volume level on the microphone input of the mixer or amplifier before connecting to avoid loud noises when connecting.

Note: The output of both of the handheld transmitters is mixed to the same single 6.3mm unbalanced jack.

On the plug-in receiver, slide the on/off switch to the on position and a small red LED will light from inside the receiver to show that it is powered on.

Each handheld transmitter has an on/off switch. Press and hold this button to switch on the handheld transmitter and the display will show the UHF carrier frequency of that microphone. At this point, each microphone is live to the receiver. Gradually turn up the volume level on the mixer or amplifier and speak into the handheld microphones in turn until the sound can be heard through the speakers or recording equipment. Increase the volume to the required level.

If the U-MIC set is not being used for long periods, turn down the volume level on the connected mixer or amplifier and switch both handheld microphones and the receiver off. For long term storage, unplug the jack and USB receiver and remove the batteries form the handheld transmitters.

Specifications

Carrier frequencies	863.2MHz + 864.8MHz
RF power	10mW
Power supply: transmitter	2 x AA batteries (each)
Power supply: receiver	Li-ion Battery (18650), 5Vdc 1000mA (USB) charge
Frequency response	50Hz - 15kHz
Capsule	Cardioid dynamic
Output connection	Integral 6.3mm mono plug
Wireless range	Up to 50m
Dimensions: transmitter	250 x 48mm∅ each
Weight: transmitter	235g each (no battery)
Dimensions: receiver	103 x 33 x 22mm
Weight: receiver	66g

Disposal: The "Crossed Wheelie Bin" symbol on the product means that the product is classed as Electrical or Electronic equipment and should not be disposed with other household or commercial waste at the end of its useful life. The goods must be disposed of according to your local council guidelines.

Hereby, AVSL Group Ltd. declares that the radio equipment type 171.824UK is in compliance with Directive 2014/53/EU

The full text of the EU declaration of conformity is available at the following internet address: http://www.avsl.com/assets/doc/1/7/171824UK.pdf

Errors and omissions excepted. Copyright© 2024. AVSL Group Ltd. Unit 2-4 Bridgewater Park, Taylor Rd. Manchester M41 7JQ