"Stealth" Behind the Seat Subwoofer Plug & Play System Upgrade (All Factory Systems including B&O Unleashed)

Ordered mine in early February and they gave an ETA of mid April so it arrived today even a little early.

The attention to detail is really nice. Even the packaging was done really well. The enclosure fits perfect and sounds great. They don’t market this as an SPL enclosure but it definitely moves some air.

My only complaint, as it is with any behind rear seat enclosure, is the way the seat folds up now. It will fold up and latch but you really have to He-Man it into place. Not a huge deal since there is no forward facing woofer to damage. Not sure if there is something on the seat back I can trim. I will have to investigate.

I highly recommend.

Recently installed the Stealth Focal Flax Evo 9 channel in my 2022 F-150. Highly recommend getting this package with the custom pillar speaker upgrade if you’re in between on deciding which package to get. The sound from these things is incredible. Definitely notice a major upgrade on the vocals in songs with these.
The quality of bass from the stealth sub enclosure is phenomenal. It’s extremely responsive and hits hard. The package is set up extremely well to allow that while still having the quality and sound of the door/pillar speakers come through.
The sound treatment was the biggest bear to install for me but the most worth it. It was pretty wild to hear the sub hit with pure bass and no rattling or random noises from the truck.
Highly recommend this package. If installing your self, set aside a good amount of time for install (took me about 4 days total). Watch the videos and there’s a couple good threads on forums of guys who have installed themselves.

Like most, I was skeptical of how efficient and effective the two 6.5” subs would be. But, the factory sub wasn’t cutting it and I wanted to retain the factory under the seat storage. I’m powering this and my front stage with a Mosconi Pro 5/30 and these little fellas take everything you throw at them. My goal was SQ, and this was the perfect addition. Truly blown away at how low and how clean they play. If you’re building a system for SQ, you can’t go wrong with this enclosure.

My 2024 Raptor was lacking in sound, but I also didn't want to give up the storage compartment under my seat since I actually use my truck for truck things. After A LOT of research and a few estimates from local stereo experts that cost an arm and a leg, I found SGS on a couple forums with a solution that fit behind the seat.

I purchased the V2 stealth behind the seat option that has the two 6.5" subs and sound treatment. I put this together over the course of 3 days to hear the differences in sound.

Day one: Installed the behind the seat subs with sound treatment and block off, very easy process. The subs cleaned up the muddy bass the factory sub provided. For my preference I maxed out the provided controller and turned the bass down on the factory EQ. While the bass was now sorted, the rest of the sound wasn't.

Day two: Installed sound treatment on both front doors with block off plates. To my surprise this REALLY cleaned up the stock mids and highs. So much so that I had to adjust my EQ from just doing the front speakers.

Day three: Installed sound treatment on both rear doors with block off plates. This completed the sound for me. I had no idea the factory system could sound this good. This sounds just as good as my Audi S6 that has the B&O upgraded system.. but it turns up higher, has more bass, and sounds cleaner!! The air noise I usually hear in the truck has been reduced quite a bit now and the doors shut with a premium sound (I know that sounds weird). I also have no rattling at all now, no matter the bass level.

No more tinny sound and all of the small nuances in music can now be clearly noticed when before it just sounded like garbage through a tin can. The bass is clear and punchy. Since I listen to all sorts of music and genres, I put the truck to the test for a couple hours in my driveway, smiling the entire time. From rap to rock, the 6.5" subs sound awesome! You can max this out to 30 on the factory head unit and it still sounds clean! This system doesn't skip a beat. Anyone looking for a solution that keeps the stock speakers and head unit, this is it!! Now you won't hear this thing pounding from down the street but it's plenty loud in the truck.

Don't cheap out, get the V2 that has the sound treatment. It'll be 100% worth the extra money spent. I'm extremely happy with this upgrade and can no finally drive my truck for hours while listening to quality music. Thanks, SGS!! Please make some stuff for cars so I can upgrade mine!

I bought the 7 ch active system for my 23 Raptor, after soon realizing that the factory B&O Unleashed system was lacking in volume, bass, and sound quality. While researching upgrades, the forum reviews all seemed to lead to the same place - Sounds Good Stereo - as they had fully embraced Ford F-Series trucks. The system arrived exactly 12 weeks after my order. When you see all the work they put in, you’ll understand why the wait is necessary. The system was well-packed to protect the components. It took two and a half days for me to complete the installation, with the sound treatment taking the greatest amount of time. It truly is plug and play. I highly recommend watching the install videos before you begin. It absolutely brings music to life! You won’t believe the difference in sound quality, volume, and bass. One friend said it was the best system they had ever heard in a car or home…and I could only agree!. You’ll hear notes in the music that you didn’t know existed. The sound is very well-rounded with crisp highs and a deep bottom end. The subwoofer box fits nicely behind the rear seat and really bumps. I did not lose any functionality of the rear seat, but did have to relocate the jack. I primarily use Spotify as the source and listen mostly to Rock, but the system performs well with any type of music. Thank you Sounds Good Stereo for doing the research and creating systems of such quality. My recommendation…just buy it!

Phenomenal sound. I was amazed at the power of the small subs. Enough bass to bring out the lows when it’s dialed down; and hits hard enough to make you grin like a teenager when you dial it up. Debated building my own custom box… don’t do it. This fits with precision and is custom tuned for the application. The quality you pay for and expect is exactly what you get. Only complaint would be that I received a surface mount remote bass knob, but was expecting a rear mount. Had to get creative to find a lower ledge to mount on, whereas there are plenty of blanks where a rear mount would work. Turns out I like it where it is, so no real complaint.

This is one unreal sounding package that includes it all! The quality increase from the factory B&O unleashed is massive. Perfectly crisp and bright highs, deep mellow mids, and a nice chest punch of base from the stealth box with one of the most eye appealing and neatly wired amp racks I have seen. Having everything neatly labeled with plug and play connections takes all of the guess work out of the install. The sound deadening and block off plates are a must and allows the system to play without interference. The focal flax speakers have a tone that is the perfect amount of warm and rich with a fantastic range. It's like getting to hear songs for the first time again with the tone and sounds that are now coming through with perfect clarity. The two 6.5" subs are nothing short of impressive for what they are. I'm amazed at the range they have, especially some of the deep lows and heavy Kicks's. This system plays every range of music to perfection whether you want the deep low thumps from rap, the quick chest pounding double bass from some metal, or the pure warm tones of a 70s guitar solo, this system keeps a smile on my face every time I turn it up.

Purchased the Ford-specific Focal drops-ins from the outlet (well worth the outlet price) as well as the stealth behind the seat sub kit with full sound deadening and block offs. The install took a weekend because the door soundproofing is tedious (not at all hard), but the end result was VERY worth it. I may amp the Focals in the future, but they already sound quite a bit better than stock and the sound deadening / block off plates made a world of difference. The subs hit surprisingly hard for being 6.5" and they go fairly low for house, rap, etc. Country and rock have a great punch, although some rock music that has softer bass notes could use a bit more oomf... but it's a massive improvement over stock B&O system.

Had an issue with the sub box being damaged in shipping and although it's taken a while to get a new box shipped out, it was a no-hassle process. They are very good to work with.

I love it! It’s exactly what I wanted for my truck. I carry MX gear and dogs in my truck so anything other than this wouldn’t have worked. It hits hard but doesn’t alert people outside. My only wish was I would it sound better if I had just bought the whole kit instead of building my own? This was my first time building something like that.

the "Stealth" Behind the Seat Subwoofer Plug & Play System Upgrade (All Factory Systems including B&O Unleashed) has completely changed the sound and feeling inside of my raptor. I highly recommend this to anybody that feels like the factory system is under performing. This will blow you out of the water for what it is. Granite this is not a 10 inch or 12 inch subwoofer, but it is a massive upgrade to the OEM system.