RockvilleSS10P 800W Slim Under-Seat Active Car/Truck Subwoofer, Deep Bass, Built-in Amplifier, Remote Control, Perfect for Car Audio Enthusiasts

I recently purchased a 2020 Elantra GT hatchback for a daily commute ride. I need room for tools and luggage. Radio and screen features are pretty nice, but speakers had nowhere enough bass response for this old head. As storage space is key, i looked into under seat options. Being a long time Kicker fan, I looked there first. I decided to wing it, spend less for 2 of these than 1 Kicker, and put them under both front seats.Install was easy. Fused #4 down the drivers side, picked up high signal just before boot to back door. The auto remote signal feature works just fine and made the install a lot faster.The remote gain is nice and fits snug between center console and passenger seat, so I won't have to mount them. Pretty sweet to have separate control over each seat. I'm even going to experiment with tuning each differently.These puppies aren't gonna blow you away, but they are impressive in tone and power, considering the size and price. They hit lower than I expected and have really clean bass drum pop.I hooked up the first under drivers seat and messed with it for about an hour. I liked the sound, but was glad I was about to double down. The second was just what I needed.After a few weeks of enjoying these, my only complaint would be the lack of cover over the wire terminals. If it were left to slide around under seat at all, it could easily ground out on seat rails.Overall, I'm very happy with these and hope they last.

Firstly, I used 4 gauge wire for the power and ground on this unit. I could have used 8 gauge but i didn't want any possibility of voltage drop or heat to be generated. Also, since my 2013 Kia Optima stock radio had no RCA hookups in the back, I installed a "Kicker 46KISLOC2 Speaker Wire-to-RCA Line-Out Converter w/LOC+12v Turn on Lead" to make the install easier, although the package does include connections for a radio with no RCA output. I ran an aftermarket wiring kit's supplied speaker wire (I mention which kit in a moment) all the way to under my seat to connect to the RCA Converter because in case a set of RCA cables go bad, it's easier to replace instead of taking the radio back out. Plus, the distance from plugging the RCA's from the Converter to the amp was a matter of inches. To connect to the factory speaker wiring, I used Scotchloks and tapped into the rear speaker wires. I bought the wiring kit with everything needed, including speaker wire, power wire, connections and RCA cables."DS18 AK4 Complete 4 Gauge CCA Amplifier Installation Wiring Kit"Once everything was connected, I turned it on and immediate noticed the bass volume increase. The Subwoofer seemed to be distorted at low volume and I was unimpressed initially.I then took the time to set my "LPF" low pass frequency cutoff to as high as it would go..(I wanted the highest frequencies to be audible through the sub initially and it ended up being a good choice for my install. I've since adjusted the LPF to about 120hz. All reproduced frequencies sounded clear. The LPF is tunable from 40hz - 150hz max.) My gain is set to about 1/4 of the way up (3-4db) to match my stock components volume at near max volume. Bass Boost is something that made a big difference. Too much and it "farts". I set mine to a little less than half way. Also, I played with the phase button. Acoustically in my car, 180° activated seemed to make a big difference.Let me tell you..I am thoroughly impressed with the volume and sound of the Sub. I play every music style you can imagine from 90's hip hop, to Hard Rock, 80's, Jazz, Reggae, Metal and Classical. I spent a lot of time FINE tuning the "built in" amp and Small adjustments go a long way. Take your time and make those adjustments and you will be very happy.Just to note, I'm in my mid 40's and grew up installing stereo systems in my own jeeps, friends cars and trucks too. I have had systems with Orion XTR DVC 12" subs in a bandpass box to my most recent (2) 12" JL AUDIO 12w3 d4s in a ported box with Kenwood Excelon component speakers. No, this doesn't sound like those. It might not make your rear view mirror rattle but I didn't want that. Don't get me wrong, it is Loud but I simply wanted good bass in a small package to retain my trunk space. This Subwoofer far surpassed my expectations, especially since some of the reviews were so poor. Also, I installed it under my passenger seat "sideways" meaning the long way going left to right..connections facing the drivers seat, since it wouldn't fit under the driver side due to the electric motor. Again, i placed the amp sideways without any brackets and it stays put just fine.My only complaint is that the sub does not reproduce extremely low frequencies. If I had to guess, I would say 50hz and below..not a big deal. To me, this speaker sounds just as good as a quality (not top tier though) 10" Subwoofer installed in a sealed box with a dedicated amp. BTW, the way that I tuned this amp was with the supplied "remote" gain knob turned all the way up. This way I would know the max level before distortion and could manage my small adjustments from there. Installation, including removal of my factory radio took about 2.5 - 3 hours. Don't forget to take your time to tune it with small adjustments. Would buy again.

This is under the driver seat of my son's Civic as part of a small amplified system with the 4 auxiliary speakers on a 100-watt 4 channel amplifier (25w/channel) and this thing had to be turned way down so it didn't over-power the rest of the stereo system!The bass response is nice and "tight" and is getting even better as the subwoofer continues to break in. The unit allows you to set the frequency response and gain so tuning it to match your system is simplistic. The remote is mounted on the dash just below the fog-light switch and is another excellent addition as no 2 songs are the same and he is able to adjust the sub accordingly with ease.I've installed several of the Rockville compact subwoofers starting in '19. To date, all still function exactly as they did when new. I have never had a single issue with ANY of their products. For the price these are, that is AMAZING!I can honestly say I recommend these to ANYONE who is looking to add a subwoofer to their system but doesn't have the room or doesn't want to spend the $$$ for a full-sized subwoofer, amplifier, wiring, circuit breaker etc. as you will NOT regret it! I've installed hundreds of amplifiers and over 100 subwoofers. I'm pleasantly surprised with the quality, durability, sound quality etc. Granted, this is never going to rattle windows like a high-powered stand-alone subwoofer can, but it will definitely add the missing bottom end of the music you listen to in your vehicle and sound excellent in doing so!I HIGHLY recommend these! This install brings my usage of these subs up to 20 and every single person who has one is completely satisfied with it. INCREDIBLE value for the money compared to a stand-alone sub with all of the trimmings and best of all this takes up NO usable space like a standalone sub does. Truthfully impressive for what they are.Kirk