Will this work with powered subwoofer? Passive suboofer?

A Passive subwoofer would be my recommendation, the passive subwoofer depends on an external amplifier and this would be the external amp. If you use an Active subwoofer; it contains a built-in amplifier and the result would be overpowering the subwoofer and you will get adverse effects

Does the amp have a fuse?

Your question does Not specify your concern for a fuse on the Power input or on the Speaker Output section ? Answer: No fuse at all, the circuit with a 12 VDC 2 amp or above 18~24 VDC Power supply adapter does not get warm at all; it has a very good Audio quality response as well as the Output Power volume for its size. It is an excellent amplifier. with 12VDC supply - 15Watt Output Power up to 24VDC supply - 50Watt Output Speakers Power and the Subwoofer power Output ranges from 20W ~ 100W output Power depending on the Power supply input.

how high does the subwoofer lowpass go? Can i push it up to around 500hz, or does it stop at, say, 150hz?

It can't 500hz, only be used in the range of 20-200hz.

Are the main L&R speakers full-range or high-passed? If they are high passed what is the cutoff frequency?

Both channels are full range, with separate bass/treble controls. I don't know what frequency the controls are biased at.

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🎧 Elevate your sound game — don’t just listen, experience every beat!

BUILT TO LAST - Copper connectors and advanced protection circuits guard against shorts, overheating, and voltage spikes.
NEXT GEN CONNECTIVITY - Bluetooth 5.0 ensures stable, long-range wireless streaming with minimal latency.
POWERHOUSE PERFORMANCE - 2x50W + 100W delivers immersive, room-filling sound for your home theater or store.
PLUG PLAY VERSATILITY - Dual AUX and Bluetooth inputs plus easy wiring mean instant upgrade for any speaker setup.
PRECISION SOUND CONTROL - Adjust bass, treble, and volume effortlessly to tailor your perfect audio vibe.

The MakerHawk Copper Bluetooth Amplifier Board is a high-performance 2.1 channel Class D amplifier delivering 200W total power with advanced TPA3116D2 IC technology. Featuring Bluetooth 5.0 and AUX inputs, it offers flexible connectivity and precise bass/treble control. Built with durable copper connectors and comprehensive protection mechanisms, it’s ideal for home theaters, retail spaces, and custom audio projects.

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Item dimensions L x W x H	11.8 x 10 x 2.2 Centimeters
Voltage	24 Volts
Manufacturer	hawkbill
Maximum Supply Voltage	24 Volts
Mounting Type	Surface Mount
Brand	MakerHawk
Number of Channels	2
Output Power	1.5E+2 Watts
Specification Met	Meets certain specifications
Material	copper
UPC	738582506800
Model	ZK-TB21
Product Dimensions	11.8 x 10 x 2.2 cm; 195 g
Item model number	ZK-TB21
Mounting Hardware	1 electronic component amplifier
Number of items	1
Audio Wattage	200 Watts
Batteries Included	No
Batteries Required	No
Item Weight	195 g

MakerHawk copper Bluetooth Amplifier Board Hifi Stereo 2.1 Tpa3116D2 2X50W+100W 12V-24V Audio Power Amplifier Module Bass And Treble Control For Store Home Theater Speakers

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