Depusheng DX7 UHF Portable Dual Wireless Karaoke Microphone System

Instructions for Use

Product Overview

The Depusheng DX7 is a portable dual wireless karaoke microphone system designed for use with various audio devices. It features echo, bass, and treble adjustments for enhanced vocal performance.

Device Compatibility

This product requires connection to devices with 3.5mm, RCA, or Bluetooth audio input/output capabilities. Compatible devices include Smart TVs, phones, set-top boxes (STBs), and video players.

Important Note: Many smart TVs have AV audio/video input ports but may not export audio signals, rendering them incompatible with this product. Ensure your device has an audio output port.

Connection Limitations: Digital audio output interfaces (e.g., COAXIAL, S/PDIF, OPTICAL) without analog audio output are not compatible.

Specifications

Receiver Specifications

Frequency: UHF
Frequency Stability: <0.002%
Sensitivity: 2mV
Interference Frequency Ratio: > 90dB
Image Interference Ratio: > 88dB
Signal to Noise Ratio: > 95dB
Audio Output: 800mV-1.4V (AUDIO OUT ?)
Headset/Phone Output: (Headset/PHONE ?)
AUX Output: (AUX OUTPUT ?)
Bluetooth: Supports A2DP (Bluetooth ? device with A2DP)
Working Range: Stable signal transmission up to 328FT (100m)
Power Consumption: 3W
Supply Voltage: 5V
Antenna: Universal antenna

Handheld Microphone Specifications

Carrier Frequency: U Band
Frequency Stability: <0.002%
Transmit Power: 10mV
Current Consumption: <25mA
Harmonic: <Main wave 40dB
Standard: Fixed frequency
Pickup: 600Ω single directivity
Power Source: 18650 Lithium-ion batteries (?)
Antenna: Built-in

General Specifications

Dynamic Range: > 95dB
System Distortion: (<1%, 1K Hertz modulation)
Frequency Response: 50Hz-18KHz (±3dB)

Package Contents

1x Receiver (?)
2x Handheld Microphone (?)
2 x Anti-slip Ring (⭕)
1 x 6.35mm Audio Cable (?)
1 x 3.5mm Audio Cable (?)
1 x 3.5mm to RCA Cable (?)
2 x Rechargeable Batteries (?)
1 x Charger (?)
1 x Manual (?)

Input Connections

Connect your audio source devices to the receiver. The receiver supports multiple input types:

RCA Input

For devices with RCA audio outputs (e.g., Smart TV, Video player, DVD, Set top box, Other audio devices). Connect the RCA cable from the device's audio output to the receiver's RCA input.

3.5mm Input

For devices with 3.5mm audio outputs (e.g., Smart TV, Video player, DVD, Set top box, Other audio devices). Connect the 3.5mm audio cable from the device's audio output to the receiver's 3.5mm input.

Optical/Coaxial/S/PDIF (Not Directly Supported for Analog Output)

Note: The receiver does not directly support Optical, COAXIAL, or S/PDIF digital audio inputs for analog output. These ports are typically for digital audio output only.

Output Connections

Connect the receiver's audio output to amplification equipment such as multimedia speakers, soundbars, mixers, or power amplifiers. The receiver offers several output options:

3.5mm to RCA Output

Connect the receiver's 3.5mm audio output (?) to the RCA input (?) of soundboxes, sound equipment, or power amplifiers.

3.5mm to 3.5mm Output

Connect the receiver's 3.5mm audio output (?) to the 3.5mm input (?) of soundboxes, sound equipment, or power amplifiers.

6.35mm Output

Connect the receiver's 6.35mm audio output (?) to the 6.35mm input (?) of soundboxes, sound equipment, or power amplifiers. Note that some amplifier equipment may label this input as LINE IN or MIC.

Basic Functions

Receiver Functions

Power Input: Supply DC 5V 1A via the USB interface using the provided power adapter (?).
Power On/Off: Long press the power button for 2 seconds (⚡).
Bluetooth On/Off: Short press the power button to toggle Bluetooth (?). The BT light indicates status.
Power Indicator (PW): Red light indicates power is on.
Microphone Connection Indicator (RF): Green light solid means microphone A is connected normally. Flashing means not connected. RF indicates microphone B.
Bluetooth Status Indicator (BT): Double press the power button to turn Bluetooth on/off. Flashing indicates pairing mode or no connection. Solid light indicates a successful connection. Smart devices can search for the Bluetooth name "Bluetooth".
3.5mm Input Jack: Host 3.5mm stereo audio signal input (⬅️).
3.5mm Signal Output Jack: Host 3.5mm stereo audio signal output, for connecting to amplifying equipment (➡️).

Microphone Functions

Microphone (?): Picks up sound signals. Handle with care to avoid dropping.
Display Screen: Shows battery status (?), signal strength (?), frequency, and channel. A flashing display indicates the battery needs replacement.
Karaoke Function (ECHO): Provides reverberation adjustment. Recommended to set to level 5 for optimal effect.
TREBLE Adjustment: Adjusts high frequencies, with 8 levels.
BASS Adjustment: Adjusts low frequencies, with 8 levels.
Frequency Conversion (CH): Offers 16 selectable channels. Long press for 2 seconds to turn on/off.
Volume Adjustment (VOL): Controls microphone volume, with 5 levels. Short press for volume adjustment.
Battery: Uses 18650 Lithium-ion batteries (?). Replace the battery when it runs low. Remove the battery to charge and then reinstall.

Bluetooth Device Connection

To connect a Bluetooth audio device (e.g., smartphone, tablet):

Ensure Bluetooth is enabled on your smart device.
On the receiver, activate Bluetooth mode (short press power button or double press power button to enter pairing mode). The BT light will flash.
On your smart device, search for Bluetooth devices and select "Bluetooth" from the list.
Connect to the device. The BT light on the receiver will become solid when connected.

Troubleshooting

Problems and Solutions

Problem	Solution
Antenna not properly installed	Do not block around the antenna. Ensure A, B receiver antennas are properly connected.
Receiving host cannot turn on (⚡❌)	1. Check that the power adapter, wire, and host are connected properly and securely. 2. Long press the power button for 2 seconds, not a short press.
Microphone cannot turn on (⚡❌)	1. Check if the battery (?) is inserted correctly, or replace the battery. 2. Long press the power button for 2 seconds, not a short press.
No sound (?)	1. Check if volume controls on input, output, and Bluetooth devices are turned on. 2. Check whether the connection mode of signal input and output is correct. 3. The output mode of audio source on some input devices may need to be set (refer to "Device Compatibility" section). 4. Some amplification equipment may need signal input mode setup. 5. If Bluetooth is silent, check if the Bluetooth device is connected and its volume is turned on.
Sound is too low (?-)	Adjust the microphone VOL + button to increase the volume. There are 5 levels in total.
Sound cut in and out	1. Shorten the distance between the microphone and the receiving host (visual distance < 50m). Obstacles will shorten transmission distance. 2. For Bluetooth, shorten the distance between the Bluetooth device and the receiving host (visual distance < 10m). Obstacles may affect transmission.
Howling (?)	1. Decrease the volume. 2. Keep a distance between the microphone and speaker.
Button invalid (??)	Remove the battery (?) to charge, install it, and turn it on again.

FCC Compliance Information

Warning:

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, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications 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. (?‍?)

	UHF/VHF Wireless Microphone Instruction Manual Comprehensive instruction manual for the UHF/VHF Wireless Microphone, covering features, operation, troubleshooting, and technical specifications. Includes FCC compliance information.
	Depusheng DT8 Series Channel Mixer User Manual Comprehensive user manual for the Depusheng DT8 series channel mixer, detailing specifications, safety instructions, main unit features, and FCC compliance. Includes information on effects channels, inputs, and outputs.
	Depusheng Audio Equipment Model Difference Declaration An official declaration from ShenZhen Depusheng Electronics CO.,LTD clarifying that various audio equipment models, including PA8, HT7, DX6, and others, share the same internal circuit and RF module, with differences limited to product names and appearance colors. This document also lists the FCC ID 2BOYG-PA8.
	ShenZhen Depusheng Electronics Agent Authorization Letter Official letter of agent authorization from ShenZhen Depusheng Electronics CO.,LTD to Eurofins Electrical and Electronic Testing NA, Inc. for equipment authorization matters.
	Confidentiality Request for Depusheng DX8 Audio Equipment Official request for confidentiality of technical documents related to Depusheng DX8 audio equipment, including schematics and operational descriptions, submitted to Eurofins Electrical and Electronic Testing NA, Inc. for FCC ID 2BOYG-DX8.