This can also be used to convert passive subwoofers to active. Designing your own subwoofer?. This is the perfect bolt in module. Low Pass Filter. This Class D power module for 18" subwoofers is suitable for replacing modules in most active subwoofers.
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200W+200W Professional Home Amplifiers HiFi Stereo Audio Power Amplifier Subwoofer Amplifier Car Home Theater Sound System
Aliexpress UK
When using the High-level signal inputs, the amplifier automatically turns on once a DC offset is detected (>2.5 volts). When using the Line-level signal inputs, the amplifier will also turn on once a +12V signal is detected from the remote turn-on wire.
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SW500W high power Active monaural bass amplifier subwoofer amplifier board with Volume knob
Aliexpress UK
Quiescent current draw <1.0A. Total peak power 280W. Maximum line input signal level 5V. Maximum high input signal level 12V. RMS power @ 4 ohms 60W. RMS power @ 2 ohms 70W. RMS bridged power @ 4 ohms 140W.
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G919H AK45 Bluetooth 5.0 Sound amplifier 2.0CH Power Amplifiers Subwoofer Hi-Fi Audio Amplifier Stereo Amplifier Receiver FM USB
Aliexpress UK
2-Channel Class AB Car Amplifier. Gross weight: 2.15kg. Frequency Response (-3dB): 10Hz – 45kHz. SN Ratio (1W @ 4 ohms): >75dB.
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12V Cable 500W Audio Amplifier 2 Channels Mini Stereo Amplifier Amp Subwoofer USB Port Mp3 20Hz~20KHz Car Amplifier
Aliexpress UK
Channel: 2.1 power amplifier, can connect 2 speakers and a subwoofer. - Two main channel output.can connect 2 speakers and a subwoofer. Power amplifier type: HIFI power amplifier. -Mini HIFI digital bluetooth audio power amplifier.
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ST-838 HiFi 2.1 Channel Power Amplifier Stereo Bass Sound Amplifier with Subwoofer Output 20Wx2+40W 12V Digital Power Amplifier
Aliexpress UK
Give into your deepest desire for power. Just consider the consequences whatever you do: pure and clean, distortion-free power. A combination of great design and massive power, the GM-A6704 amplifier gives you total installation freedom and no distortion.
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Farctory Wholesale New 2000W Trapezoid Car Super Bass 10 Inch Active Car Subwoofer 10" Car Active Amplifier Subwoofer
Aliexpress UK
OD1-3500D 3,500 Watt Class D Monoblock Amplifier. 1-ohm Stable Monoblock Operation for MAX Power. MAX Power 3,500 Watts. Bridge 2 Monoblocks Together for Double Power! High/Speaker Level & Low Level/RCA Input.
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O-NOORUS D4 TPA3255 PFFB Amplifier with HDMI ARC Bluetooth 5.3 USB Optical Multi-Input Amp Subwoofer for 2.1 Channel
Aliexpress UK
1500w Audio Subwoofer Sub AMP RCA Car Amplifier Wiring Kit Power Cable AGU FUSE. Power : 1500W. 28Pcs Press and Pull Sleeve Kit Bush Bearing Removal and Installation Tool Kit. 2Pcs Brake Shoe Spring Pliers For Installation Removal Drum Shoe Handle Tools UK.
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Auto-partner ST-838 2.1CH Audio Power Amplifier, RMS 20Wx2+40W Class D Stereo Digital Audio Amp with Subwoofer Output
Aliexpress UK