Pioneer TS-WX400DA 9” x 5-1/2” Compact Active Subwoofer with Built in Amplifier, 250 Watts Max Power Sub, Deep or Dynamic Bass Mode, Easy Installation, Enhanced Car Audio

I struggled to find something that could improve the sound in a Jeep TJ. Both my seats, drivers and passenger are a lift mechanism and there is very little room underneath them. This Jeep also didn't have the location in the center console, that came on later models -not sure I would want to sacrifice that space regardless. I didn't want anything basically to interfere with my limited space in this car, underneath the driver's seat is basically unusable. I found this speaker, it was one of the few that would actually fit. As for the unit, it has it's own amp, has great documentation (connecting to the factory stereo was a breeze - I did need to add a different wiring harness) and most importantly sounds fantastic. This thing sounds GREAT. Is it as good as a giant subwoofer? No, of course not - but it does sound fantastic. I would highly recommend it, I might install another in a 4Runner because it enhances the sound so well, without taking hardly any room at all.

Installed today. Installation notes / Other things to buy:1. You will need an RCA cable splitter 2 into 1 likely2. You will need a fuse tap3. You will need to be aware of what fuse is accessory power, what cable on your head unit is power on, and where to groundInstalled in my beater buick century. I had previously installed a new head unit and updated speakers. No separate amplifier, as I picked speakers that were within power handling ranges that made sense with the HU (JVC KW-56 BT, baseline 5 1/2 infinity front, and... JBL 6x9s).Wanted a little more oomph, did not want a ton. Did not want to deal with running power to battery or pay someone to do it.This subwoofer has a low power draw of under 5 amps, and the instructions (and confirmed by crutchfield) note to fuse tap. I had no idea anything out there was made for this. It's small compared to the underseat options, but i took a chance.Honestly i'm pretty well blown away by how much it adds to the sound. It's very much a sound quality addition to your car. I mounted under the dash, inbetween the passenger and driver footwells. With the crossover set to approx. 90hz, and the gain set to approximately 2'oclock, its fantastic. Classic 90s hip hop, thrash metal, metalcore, EDM... it all sounds really, really good. I've had full systems with multiple amps before and pretty discerning ear for car audio.I can't speak for how good this would sound mounted under your seat. But pretty confident that if you put this in a car with the same goal I had, to get more sound quality on the bass and hear the lower ranges, And mount it in the passenger footwell or similar area...you're going to be very happy with this. Yes, 200 dollars is a lot of money for something this small. but the sound quality will absolutely surprise you.

Was genuinely impressed about the results.This subwoofer will easily do about 70% of music but when it comes to deep bass from electronic music, it definitely tries but obviously this wasn't its intention. If you already have a subwoofer and looking to pick up those DEEP mids then this is a perfect subwoofer 10/10

Wiring was very simple, and the sound quality is good. Can't beat the simplicity. It's advertised as responding to 60 Hz, but I don't get much below 80Hz or above 120Hz on mine and it's paired with a high-end Pioneer head unit. So the tone is a little weird and doesn't fully fill in the gap. Other than that, it's been a great addition to my system, and for my truck it's about the only option that would fit so I'm happy with it.

Buyer beware, this unit does not work with your radio when using volume controls. You have to control it via a separate volume knob...if you turn your radio down the bass will still play at original volume until you turn it down on the included remote. This is a very low quality solution, spend your money on better underseat subs. Pioneer isn't a serious company making a product this bad with today's technology.

Easy to install, fits under the seat as advertised. Sound quality is good for a compact sub. Build quality is excellent, unit is sleek and looks good. Unit is easy to operate and functions well with my aftermarket head unit. Good value.

This product has impressed me. I was doubtful of its Bass output but it has a great output. Very impressive and fits a small space. When i took the product out of its box, it was heavy and not cheap materials. Upon installation, the sound was really great with adjustment to its bass. Very impress and you will not be disappointed.

This thing is an improvement over the stock speakers in a 2023 Nissan Sentra, but just barely. If I were to do it all over again I think I would go with something with a little more size/power. It easily fits under the front seat.