🔥250/400W Audio Speaker Crossover Module Treble Medium Bass 3 Ways Speakers Filter Frequency Divider 5200Hz-5500Hz Adjustable Enhance Sound Quality for Home Theater Speaker/Karaoke

Specifications:Material: ABS+PCBProduct Model: ZK-MT21Bluetooth Version: 5.0 (Unobstructed, 15 meters)Input Sensitivity: 500mVInput Method: AUX + BluetoothNumber of Channels: 2.1 ChannelsAmplifier Chip: Domestic Amplifier Chip CS8673EPower Supply: DC12~24V/5A or higher (Cannot be connected to a 24V battery pack)Speaker Compatibility: 20~100W, 4~8QOutput Power: Left and Right Channels <50W; Subwoofer <100WProtection Mechanism: Reverse Connection Protection, Overheat Protection, Overcurrent Protection, Short Circuit ProtectionProduct Dimensions: 93mm90mm22mmProduct Weight: Approx. 130gNote: External antenna is compatible, but antenna and antenna mount are not included and must be purchased separately. Note: Sufficient output power will only be achieved if the audio input and power supply voltage/current are adequate! Higher power supply voltage results in higher output power, and lower speaker impedance also increases output power! Please ensure the power supply rating is greater than the amplifier's actual operating power!Description:Bluetooth audio amplifier module, 2.1 channel, maximum output power 2x50W + 100W.Features both AUX and Bluetooth audio inputs in a single amplifier board. Bluetooth 5.0 offers higher transmission efficiency and longer transmission distance.Equipped with short-circuit protection, overcurrent, overheat, and reverse connection protection to prevent total failure. In case of overload, the device reports the fault to the processor to protect itself from damage.Uses copper DC connectors and barrier terminals. Capable of withstanding high current without overheating or damaging wiring.Classic design with a multi-functional main knob. The main knob uses a rotary encoder typically found in high-end amplifiers, achieving 360-degree stepless tuning with a smooth feel. One-button start/stop and long-press power on/off operation are simple and convenient.Features bass, treble, subwoofer frequency, and volume control for easy volume adjustment and to enjoy your desired sound. Widely used in shopping malls, home theaters, and speaker systems.