220V 300W 150W Heavy Subwoofer Digital Power Amplifier Board Active Power Amplifier Board Pure Bass 4ohm 8ohm Diy Speaker

Main Specifications:

Rated power:300W4Ω/150W8Ω

Size:210*173*49mm

Box opening dimensions Recommend(mm): length (175-183) * width (135-145) * inner depth 50

(1) Dual power supply design, truly micro-current automatic standby function (independent power supply in standby)

(2) Pre-stage voltage-limiting circuit reduces distortion, safer to use and more effective

(3) Amplifier circuit uses a digital amplifier, does not overheat regardless of high or low power output, output uses large inductor coils

(4) High-power switching power supply with voltage stabilisation provides adequate voltage and current

(5) Added high-level input RCA socket, convenient for connecting directly to an amplifier's speaker output when some amplifiers lack subwoofer output

(6) Integrated high-current power socket with built-in fuse function, safe and convenient

(7) Dual-line input, either can be used as input or line output

(8) 0-180 degree phase adjustment, suitable for any amplifier output, no need to worry about mismatch, 25Hz~250Hz low-pass/high-cut (frequency adjustment) allows easy tuning of the desired frequency, optimising the speaker response, bass frequency adjustable regardless of room structure, strong bass achievable

(9) Master volume control, making it more convenient for clients to adjust the bass level

(10)FUSE: Power fuse holder (plug-in type for easy replacement).

(11)POWER: Power switch: LED lights up when the power is on.