LoPro8

Sound Storm Laboratories LoPro8 Installation April 2014 – I installed this subwoofer in a 2014 Honda Accord Plug In using the stock radio and navigation system that came with the car. The subwoofer was placed under the passenger seat with a little room to spare as I wanted to keep everything as stealth as possible. This subwoofer has a built in amplifier and various controls for great bass and gives the music the extra punch it needs. I’m amazed this subwoofer doesn’t have a port but can still produce deep and strong bass levels for its size. I bought mine new from Amazon at $113. It’s near impossible to get to the back of the car radio without dismantling the entire dash so I chose not to do that and created an alternative to share. Before you get started, safety first. Be sure you put electrical tap on all exposed speaker and power wires. Be sure you put electrical tape in any area where they might touch another wire or connector. Wrap electrical tape around wires where they might rub anything and expose bare wire later on. Don’t add power to the subwoofer until you’ve double checked your connections and ready to test. For subwoofer power, I bought a 20 amp buss fuse holder at Home Depot and attached one end to the positive battery post. Use the battery in the engine, not in the trunk. Then open the passenger front door and there’s a plastic vertical panel next to the door hinge covering access to the quarter panel wheel well. I pushed a red 8 gauge wire through there to above the front right light assembly, then well above the radiator around the left light assembly to the battery. I attached the other side of the fuse holder to this wire. NO FUSE INSTALLED AT THIS TIME. Passenger front seat – foot area. There is one horizontal panel just above where the feet would be. That pulls down. The kick panel is that horizontal panel you step over when you enter into the car. That pulls up. There’s a vertical panel just right of the feet and that pulls off. The passenger door has a black rubber boot that feeds wires from the cabin. I made a small cut in the boot on the cabin side and fed the red power wire through the boot. I followed the existing wire harness along the kick panel and the wire comes up under the passenger seat. I patched the cut in the boot with some caulking. For the ground wire, I used black 8 gauge wire and attached it to the passenger seat mounting screws. This subwoofer has a third connection that tells the subwoofer to turn on when the car is turned on. Otherwise the subwoofer would have power all the time and drain the battery. I took a 12 Volt cigarette lighter charge adapter and cut the end off the cord. I ran the 12 volt power side to the subwoofer Remote connection. Do not connect this to the Remote Level Control on the other side. For speaker input, the subwoofer can use low end RCA cable input or high end speaker input. I chose the high end. At the passenger kick panel noted above, is a wire assembly. You’ll find a solid blue wire and solid orange wire, the rear right speaker. Splice in a 10 gauge speaker wire to these and route the rest under the passenger seat. I could not locate the left speaker wires so here’s my fix. I ran 10 gauge speaker wire from under the seat, to the back seat of the car, through one of the top child car seat anchor points to the left speaker. There, I put female spade connectors on the ends. About 2 inches back, I stripped the insulation off, and attached 3 inch leads with male connectors. I pulled the speaker connector off the speaker. I put the female connectors on the speaker and male connectors on the speaker connector. At this time, from under the passenger seat, you should have a red power, black ground, 2 speaker wires, and a cigarette adapter line. At the subwoofer… connect the speaker lines to the supplied connector. Be sure your polarity is correct. There is an extra ground wire on the connector, be sure to connect it to ground. Attach the red wire to power. Attach the black wire to ground. Be sure your polarity is correct here too. Go to the battery and install the fuse. Install the Remote Level power adjust cable and control. DO NOT CONNECT THE 12 VOLT CIGARETTE ADAPTER yet. HINT: Be sure your speaker polarity is correct. Using a spare speaker, you can attach one line to the speaker and ground the other side. Turn on your car radio with low volume. If you hear speaker sound, then that is the positive line. No sound, and the speaker hook up is the negative side. Turn off the car power. On the LoPro8, set the controls like gain, boost, etc to very low. Be gentle when turning. Turn full clockwise. Then turn full counter clockwise. Then turn clockwise about a quarter turn, about a 3 o’clock position. Do this to all 4. Do the same for the Remote Level Control. Power on the car. Power on the radio. Turn the radio volume to low. Now connect the cigarette adapter and look for a green light to show on the subwoofer. Look and smell for smoke and sparks and shut down immediately if you see these. Put on your favorite song on the radio and turn the volume up to just above where you can hear it. Adjust the Remote Level Control, volume of the radio, and the Gain first in small steps. Then fine tune using the other adjustments. For a few days, I placed my subwoofer on a box and kept in on the floor in the back seat until I could adjust the subwoofer settings just right for me. Before putting the unit under the seat, double check that your connections are tight but don’t overtighten where you’ll break something. Be sure to use electrical tape where you see exposed wires. There is a vent under the seat. I used a curved strip of aluminum foil to deflect the air around the subwoofer. When you push the subwoofer under the seat, don’t bind or pinch the wires. If the music still sounds good, and you don’t see or smell sparks or smoke in the car or engine, you can put back the panels you removed. The LoPro8 packs some good bass and extra punch to the Honda radio. I can see the rear view mirror vibrate when I have the volume up about 25; it goes to 40. Sometimes I like to play the music loudly and the LoPro8 is a great unit for the size and I am very pleased. Problems… The Honda radio has 2 microphones that listen to the noise in the car as it goes faster. At around 40 mph, rough roads, or windows down and cars rushing by, it causes the subwoofer to sound off on its own. I haven’t tried disconnecting the microphones yet. Secondly, the cigarette lighter adapter used to power on the subwoofer may need to be adjusted to something under 12 volts as it causes a slight pop on the subwoofer when the power is turned off. An easy fix with an in line resistor.

I am impressed with this little guy! I honestly didn't have too high of hopes, based on the price and some negative reviews, but I was quite pleasantly surprised. First, let's talk about its performance. This thing puts out an incredible amount of bass, in spite of its small package. Way more bass, in fact, than I need; I had to turn the gain and bass boost down. I wasn't looking for something to boom my way through the 'hood, just needed some bass to round out my system. This fit the bill perfectly; no more 'hollow' stereo sound! I've only had it in for a day, so I'm still tweaking the settings. I expect that it'll be even better once I find the sweet spot. Next, aesthetics, size, and functionality. I bought this for me Wrangler TJ (which I'm doing a full restore on), so size was super important. For those of you who have Jeeps, you know there isn't much extra room inside. **Note to TJ owners: this does not fit under either of the front seats (on mine, at least). That is where I planned to put it, but no such luck.*** I ended up putting it under the rear seat, and it fits quite nicely; you can't even see it (which is good for theft deterrent). I needed to keep it hidden because I have a soft top, but if that isn't a concern for you, don't fear; this is a sharp looking unit. If you mounted it somewhere visible, it definitely won't be an eye sore. Hooking it up was simple and straight forward. You will need your own power, ground, RCA, and speaker wires, though. It does come with two options for mounting: Velcro (which is what I used), and brackets; what you use will depend on where you put it. Overall, this was a great purchase. I was considering getting two units, because I didn't think an 8 inch would have enough umph, but it certainly does. I would have wasted my money if I'd have purchased a second one; it just isn't needed. Obviously, I can't attest to its durability or longevity yet, so I'll update if it craps out on me. EDIT: The unit died in 2018. So, it worked well, and sounded nice, for a little less than 3 years. Do what you will with that information.

Installed in my 2012 Nissan Versa sedan under the front passenger seat. The amp is sturdily built and looks to be good quality. Was happy to see that the amp came with two good size strips of Velcro tape. I taped just the plastic hook side of the Velcro to the bottom of the woofer and the hooks grab right into the carpet upholstery and doesn't budge a bit. The manual says to use 8 gauge power wire. I found an 8 gauge amp kit at wally world for $25 bucks that had a 50 amp inline fuse and all the other wiring accessories. Everything hooked up with any issue and powered up the first time. Perfect amp/sub for Rock/Metal/Country that handles the notes of the bass guitar perfectly and also gives a good punch to drums recorded off a clean microphone. Hard to believe how they can cram so my sound into such a small box. The did bottom out on some DMX that had a lot of bass with a heavy punch. I understand that this is because the slim profile physically limits how far the woofer can throw the coil. I don't listen to much rap so I haven't fiddled with the subsonic filter any to deal with this. So, I just turn the bass boost down when a song does happen to come on that causes this. This sub definitely rattles the mirrors in my car but it's not so loud that I'm knocking stuff of my neighbors shelves. But it does turn heads when you roll into a parking lot. It sounded nice with the built amp on my head unit. But then I installed a second 60 watt 2 channel amp for the four 6.5" door speakers and now my little Nissan Versa suddenly has one of the most awesome sound systems I've ever had. And I even drove around in a Lexus RX350 with the 8 way Bose system before. Would definitely recommend for full, rich, deep bass sound that won't break the bank. Update 11/8/2017: So, I've been using this sub for a while now and thought I'd give an update. It's still trucking along and working fairly well. Though, I have gotten it to go into protection mode trying to be overzealous and pump up the gain too much. Seems like the most it'll take is when the bass knob is about halfway, the gain is set to around 55-60% and the bass boost is set to around 15%. At this setting you can turn the bass up boost knob up to full when you want to jiggle things around a bit for a song or two but best to turn it back down or it'll trip into protection mode. I still think this is a good speaker to use to help fill out the low end of some 6.5" door speakers but this is not really a subwoofer as it's more of a mid-bass speaker. It really only starts to get loud at around 90 Hz and gets loudest up to around 120 Hz. Definitely not something that'll rumble at 40 Hz. Also after learning a bit more about amps I've come to realize that the claimed power ratings are a joke for this thing. The manual states it's a 400 RMS amp but that's laughable. This thing has a 15 amp fuse which makes it impossible to handle 400 watts. 1 amp of fused powerhandling generally equals about 10 watts of speaker power. So, a 15 amp fuse on this LOPRO8 means it's probably more like a 125-150 watts at most. I guess once my ear got trained to listen to things and having a chance to compare to other sounds systems out there my initial rosey assessments have lost their gleam a little.

***Latest update - 2019 - this is almost 4 years later. It's STILL kickin', STILL sounds great, and just had another friend compliment me on it and now is going to buy one for his Impala. Don't overdrive it, set the levels properly and forget 'em, control it from your head unit and the remote knob, mount it so it gets some airflow around it to keep it from overheating, and you should have no problem with it. Yup, I love it, and yup, I'd buy another one in a heartbeat.*** ***Ok, it's now a couple of months after the installation and I'm upgrading this little unit to 5 stars. It's dialed in, set to my preferences, and now all I have to do is the occasional tweak to the remote knob on the dash depending on the track / genre that's playing through the head unit. There's a respectable amount of bass, it's clean, it's got a good punch and I'm not abusing it at all, just using it to fill in the bottom end. I'd buy another one in a heartbeat if I needed a sub for another vehicle, and I've recommended it to several friends / family that are upgrading their systems as well. Still haven't covered up the blue LED, but it's situated on the dash so when I'm driving, the steering wheel blocks that LED from my eyes... I'm ok with that.** Had it professionally installed in a '94 Chevy C1500 regular cab under the passenger seat, out of sight. It's paired up to a Pioneer head unit using RCA plugs, and filling in the bottom end for the Pioneer 2 way 4x6 dash speakers and factory 4x6 pillar speakers (pillar speakers soon to be replaced). First, I bought this on the strength of the reviews I read here on Amazon. I'm happy to say, this sub seems to live up to those reviews. It's only been in the truck for 2 days now, so I'm still dialing it in, but it rocks. Even the installer (who had never seen the LOPRO8 before) was surprised in a very good way as to how nice it sounds and has said he'll be recommending it to his customers looking for something to fit in a small space. No, it won't rattle neighbor's windows 3 doors down the street, and no, it won't vibrate the mirrors on the car next to me at the stoplight, but I'm 53 years old and WAY past that stage. It fills my truck cab VERY nicely without overpowering the rest of the music, which is all I need or want. I spend an hour each way in my truck back and forth to work, and this will make the trip quite enjoyable. I predominately listen to rock, blues, classical and jazz, and so far from Rimsky-Korsakov to Metallica to Al DiMeola to BB King, this sub seems to perform extremely well and I am VERY happy with it. My only issue is the brightness of the blue LED for the remote knob. Yeah, that'll be covered with something very soon - it's WAY too bright and very distracting.

The only downside to this entire unit is the tiny grub screws you need to tighten down your 8ga wire down with. Mine stripped out and I ended up having to fabricate my terminals by using a tap and making threads where the actual wire is suppose to go in and insulating the bolts with shrink wrap accordingly so they wouldn't short to ground. Other than that, you won't be blowing any windows out with the bass production it makes but solid all around bass. I used this and tuned it for HIGH bass notes and let my 10" ALPINE 'R' with a ported box take up the low bass notes. All in all my system sounds superb with the 2 working together to give me all around great bass. **If you plan on mounting under your seats be sure to measure before you buy. Most cars run ventilation ducks for rear passengers. ** also be sure to have a 6mm gap in between the bottom of the unit and your flooring in order to allow proper venting to pass under it so it doesn't over heat. And shut off ( as a built insafety feature they have)

This is not necessarily a great subwoofer, but it is a great value. As others have said, this is not going to put out enough bass to hear outside the car. In fact, I would be hesitant to buy this if I were installing it in a trunk. However, I was looking for something small to fit under the passenger's seat in my 2015 WRX that would fill in the lower frequencies of my factory system and this worked perfectly. It took me about 2 weeks of tweaking the levels to get it setup correctly. Once I had it dialed in, it blended with the rest of my audio system very well and now sounds like I have a much more expensive audio system than I actually have. I did end up hiding the remote in my glove box so I would not have to look at the absurdly bright blue light, but that's not a big deal because I rarely need to adjust it. When I first ordered this subwoofer, I was a little concerned about quality from other people's reviews, specifically it overheating easily. But I have been using it for about 3 months now, during the peak of Florida summer heat, and I have not had a single issue. I do have the gain set around 30% of its max level and the bass boost turned way down as well, so I'm not pushing the amplifier as hard as others may. But at this point, I would be surprised if it failed on me for any reason. I have installed aftermarket sound systems in every car I have owned over the past 15 years so I have a lot of experience with car audio equipment. I don't think there is a better compact subwoofer/amp on the market at this price point. I'm sure there are better options, but I would expect to pay 3x-4x as much for one of them. If you want to fill your car with the type of bass that drowns out all other frequencies, this is not the subwoofer for you. But if you are looking for something that will provide balanced bass at louder volume levels and hit lower frequencies than your door speakers can support, you will be hard pressed to find a better value. For anyone considering installing this in a 2015+ WRX, it is a perfect fit under either seat. There are pre-existing cutouts in the carpet to run the wires through, as this is where the premium factory system places their amplifier. You will have less than 1/4" clearance between the seat rails, so the 10" subwoofer will not fit. The seat heaters are a few inches away and would likely have no effect on the subwoofer's performance. I recommend pointing the speaker towards the floor to insulate the seat from excessive vibration. I used an 8 ga amp kit, but only because I already had one. A 10 ga kit will supply enough power. You will need a line-out converter if you have the stock head unit. I used the PAC SNI-35 and it has been great. The sound quality is better than most and it fit behind the radio so I could leave the RCA cables there for when I do upgrade my head unit.

Purchased: May 2020. UPDATED 2-14-22 * I thought I blew this but it was a bad connection, still runs great with new wire. After installing a new head unit & door speakers in my '02 Dodge Dakota quad cab, I felt the system need something more, but I didn't want to give up the back seat for a full woofer/box amp setup. Also really didn't want to shell out much more $$$. I got this wired up in about 30 min (still had most of the HU and dash apart at the time*... running the power line direct from the battery and I installed an extra 20a inline fuse on the power line in the engine compartment for safety. Then getting the rest thought the firewall is the hardest part. ) Once it was live, I had to turn the "loudness" setting on the HU off! Laugh Out Loud This little 8'' throws out a very nice loud sound and combined with the new HU and door speakers, brought some life back to my truck. Fits under either driver or passenger seat ( I set my just behind the driver on the floor, but can slide it under if needed) After tuning the HU and the LOPRO8 settings I am really blown away at the sound quality. I was nervous, with some bad reviews but this was worth the money so far. Plan to get a second for the passenger side to make to SToopid loud! I will update this if any issues happen.

While a decent deal for the price you pay this unit didn't come without issues. First thing I noticed was the remote level control knob functioned like an on/off switch where turned all the way down was no bass and then about 10% past that was full bass leaving the rest of the knob's range completely worthless. Another issue I have with the unit is the gain response seems iffy at times. I had this speaker hooked up to three different decks, all using the low inputs and it would seem the bass would spike up at a low level and then remain at that volume to the point when you turned the stereo up the mids and highs would end up over powering it. Turn the volume down and you get to a point where all you hear is bass. Over all, for the price, this thing does hit pretty hard and I liked it even more in my wife's JK Wrangler up under the passenger seat. It fills that space with bass a lot better than it did my 2-door Tahoe. Bass seems to be pretty tight while still able to achieve the low rumbles. You probably won't get a better deal for less than $100, but with the volume/gain issues I had I wouldn't buy another one. I am assuming that this may just have been a defect of my unit, but after a couple months of use the $100 isn't even worth returning it.

I wanted to upgrade the low end of my stock car stereo. The stock stereo was actually quite good and capable of vibrating my rear view mirror, but once it got to that territory, any more bass added would clip the mid range speakers. My goal was to compliment my stock stereo with this sub; this was also my first foyer into DIY subs. I didn't want to have a complicated setup with an Amp + Sub Box + Wiring so this was a great alternative. I purchased a 4AWG wiring kit as to over engineer my solution but I will say now, unless you want to do 2 of these, stick with 8AWG as it's smaller and the terminals for the 12V/Grnd are designed for 8AWG and I had to trim the 4AWG down to make it fit. After all was said and done, I don't even listen to my stereo at half volume and it is loud enough for me. The sub is perfect for complimenting the stock stereo but the RMS values are grossly overstated; I can't imagine it's more than 200W. If you want to feel this sub more than just a general vibration in your seat, I would suggest buying two or jumping to a higher powered one; I plan on doing just that in the future. I'm giving it 5 stars as I planned this build out for a month and knew exactly what I wanted and what I would be getting out of this sub. I only wish I could get some overhead in the bass to play with so I could further tune. My sub has the Gain at full and it is just at the right spot for bass but I would love more.

Its not working and a cable is missing

Ordered this one to boost up my system , I just renewed all the speakers and brought a 75 pound head unit from JVC ( because I wanted a USB socket and a CD player.... This is a budget system in my car but now with the ad on of the sub woofer it sounds fantastic ! Oh and boys ... dont forget to hook the remote to the head unit...

Worth your money and must say a quality product any day.I rounded this one based on online reviews of underseat 8inch subs. Its performance is top class even better than a pioneer underseat one when you compare prices. If your system has a sub out with controls its top notch.If its undistorted bass for those ears in the car (hatch back) its more than enough.More over its got all the controls on the sub that one needs and you also get a bass control to fit close to you to adjust for every song should you need to. The seller is prompt n responsive and i had no issues. In fact i got it nearly a week earlier than the expected date and neatly packed too.

Tenia mis dudas por la opiniones negativas pero el resultado fue excelente. Lo instale en el asiento trasero de una ford lobo doble cabina y transmite un sonido fuerte, nítido y suficiente para escuchar música dentro del vehículo, de hecho te sorprende lo potente del bajo a pesar de las dimensiones del cajón. La calidad de los materiales es de primera y su precio es también de lo mejor; opciones de la competencia como db drive o cervin vega son el doble de costosas. Finalmente decir que si buscas un sonido fuerte y justo para sentir un bajo dentro del vehículo, esta marca es una excelente opción. Lo recomiendo ampliamente.