10" Marine Subwoofer 400W Waterproof Quick-Mount for UTVs & Boats

How does the pssub101 hook up

To hook up the PSSUB101, you run speaker wires from your home theater receiver's front left and right channel outputs directly into the "From Receiver" speaker terminals on the back of the subwoofer. Then, you run another set of speaker wires from the subwoofer's "To Speakers" terminals out to your actual left and right bookshelf or tower speakers. The subwoofer intercepts the bass frequencies it needs and passes the rest of the sound safely to your speakers.

Does this need a amp

Yes, the Pyle PSSUB101 does need an external amplifier.

The PSSUB101 is a passive powersports subwoofer system designed for UTVs, ATVs, and marine setups. It does not have a built-in amplifier or a power cord plug. Instead, it features raw quick-connect speaker terminals coming from the enclosure.

To get sound out of it, you must run speaker wire from this subwoofer to a dedicated external amplifier or a high-powered marine head unit that can supply the necessary wattage.

Does it have a built in amplifier

Yes, the PSSUB101 has a built-in amplifier, so it’s an active subwoofer and can be connected directly to a receiver or audio source with a line-level output.

WTH? Where are the rest of the wires.... or the "Line In" port? Your technical spec. page said 400 Watt "Output" which would mean it's self-powered. Was this incorrect information?

The PSSUB101 is a passive subwoofer, so it does not have built-in power or a “Line In” port. That’s why you don’t see extra wires.
The “400 Watt” in the specs is the power handling—it tells you how much power the sub can take when you connect it to an external amp. It isn’t a built-in output.
So yes, it does need an amplifier to work.