Can I run a subwoofer off this one

Don't understand the question. This is a subwoofer. If you mean can you connect it to another, I don't think so, but that's a question for the vendor.

If you connect with RCA cable, is wi-fi connection necessary?

It isn't connected that way. It uses an RCA to 3.5mm cable to connect the subwoofer to the main speakers. After that, if your main speakers are multi-hookup type, then you can attach your playing device to your main speakers. Keep in mind, the subwoofer is only a sub, it has to slave off the master speakers. Wi-Fi only involves your player device and main speakers.

Will this work with a bose soundbar?

It depends on what kind of Bose sound bar you have. If it’s a newer genre Bose it will not work with it. Look on the Bose website to see subwoofer capabilities.

can i use this sub for karaoke amplifier that can also play music

Thanks for your question. Pls send the ports‘ photo of your amplifier to support@bestisan.com. We'll have a check and give you a reply.

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Description

🎶 Compact power, colossal bass — your home theater’s secret weapon!

TAILORED BASS CONTROL - Fine-tune your bass intensity independently from overall volume for perfect sound balance.
SEAMLESS COMPATIBILITY - Plug-and-play with most receivers, soundbars, and bookshelf speakers via LFE & line inputs.
ROOM SHAKING 400 W POWER - Unleash deep, immersive bass that fills your space without distortion.
COMPACT DESIGN COLOSSAL IMPACT - Sleek 9.3-inch footprint fits effortlessly under furniture or alongside your setup.
SPACE SAVVY DOWNWARD FIRING WOOFER - Maximize floor coupling for rich bass while saving precious room real estate.

The BESTISAN 6.5’’ Powered Subwoofer delivers 400 watts of deep, precise bass through a space-efficient downward-firing design. With independent bass and master volume controls, it offers customizable sound enhancement for small to mid-sized rooms. Compatible with most home theater receivers and speakers via LFE and line inputs, this compact subwoofer (9.3x9.3x13 inches) fits discreetly into any setup, transforming your audio experience with rich, room-filling low frequencies.

Specifications

Is Electric	No
Power Source	Corded Electric
Speaker Maximum Output Power	400 Watts
Subwoofer Connectivity Technology	Wired
Connectivity Technology	RCA, Auxiliary
Audio Driver Size	6.5 Inches
Item Weight	10.5 Pounds
Item Dimensions D x W x H	9.3"D x 9.3"W x 13"H
Frequency Response	35200 Hz
Compatible with Vehicle Type	Car
Compatible Devices	Television
Speaker Size	6.5 Inches
Woofer Diameter	6.5 Inches
Water Resistance Level	Not Water Resistant
MP3 player	No
Specific Uses For Product	home theater setup, watching movies, and listening to music
Controller Type	Corded electric
Color	Black
Is Waterproof	FALSE
Warranty Type	Limited
Control Method	Remote
Audio Output Mode	Stereo
Mounting Type	Shelf Mount
Speaker Type	Subwoofer, Bookshelf, Woofer
Additional Features	bass_boost
Recommended Uses For Product	For Surround Sound Systems, For Televisions
Subwoofer Diameter	10 Inches

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