Rockville RBG18S 2000W Active PA Subwoofer 18-Inch, DSP + Limiter, Adjustable Crossover, Portable, Rugged, for DJs and Live Events

Ok let me tell you that The RGB15S Active Subwoofer is an amazing little package. I ordered two of these to pair with my RPG12 Active speakers for use at an outdoor festival. The Subwoofers are built very well, the carpeting of the cabinets seemed a little lacking in QA/QC but none the less was effective and clean. The input section is very user friendly and marked in such a way that it’s nearly impossible to not connect these properly. The sound quality is also impressive, I have seen various videos on Youtube that show muffled or distorted subwoofers I am assuming this is because the RGB15S units were not set up property or had signal going to them that was distorted. The playback from the sub at my events was tight and accurate. Much better than I was expecting. On a scale of 1 – 10 I would give the RGB152 an 8-8.5 rating. Definitely enough quality sound and volume for any mobile DJ indoor or outdoor venue.The RGB15S subwoofer has an onboard DPS that is pretty user friendly. Pick a disposition and slide the selector switch to the setting and you’re in business. There is also a onboard crossover with 3 crossover points, again very easy to use, pick your desired Xover point and slide the switch. I have seen many user videos & reviews of these subs that really do not do them justice. The key to setting these subwoofers (or any speaker for that matter) up correctly is having your signal source or controller set up property. Poor signal source = Poor sound.Start with the DSP set to OFF and the Xover point set to 80hz. turn the gain pot on the RGB15S to “zero” (all the way to the left) Assuming your Controller is set up and “zeroed to no more than +3db” (your digital meters are not constantly in the red, only bouncing in the orange and peaking in the red from time to time) connect your sub to the controller and play a track with reasonable bass and at full program volume. (NOTE: YOUR TOP SPEAKERS ARE OFF AT THIS POINT NO SOUND AT ALL FROM THEM). Once music is playing, slowly increase the gain (turn to the right) on your RGB15S until you hear sound coming from your sub. Continue to increase the Gain pot until you begin to hear distortion and see the clip light flash vigorously, slowly turn the gain pot back to the left until the CLIP light only quickly FLASHES on bass notes. Then Turn it a tiny bit to the left more. This should give you a good “live play back” setting on the sub. At this point connect your TOP speakers and adjust their volume accordingly. If the low end sound is not quite right, at this point you can adjust the Xover frequency on the sub, I would recommend lowering the volume when doing this. I have found that when using the RPG12 powered system (input gain set to 5 and unit volume set to 6), the 100hz setting blends the best for most music types. You can also adjust the DSP if you are looking to boost the bottom end but I have found that the DSP seems to distort the sound coming from the subwoofer and 99.9% of the time leave that set to off.I have used TWO RPG12 tops and TWO RBG15S bottoms at outdoor events in 90* Full sun conditions and ran them nonstop at peak volume for over 5 hours with no problems. The amp on the RGB15S was not even hot when the event was over. The NON POWERED pass though outputs provide for easy connection to my RPG12 tops. For the price point I am extremely impressed with the RGB15S subwoofer. The only thing I would like to see on these for the future are “recessed wheels” so you can tip and roll the subs when needed.out of the box I did have one RGB15S arrive DOA. However the Team at Rockville was quick to help resolve my issues. The initially sent me a replacement amp, when that did not fix the issue, they issued a replacement RGB15S for me and set up an RMA and return shipping label for the DOA unit. The whole return/swap took about 5 days.In closing, the RGB15S is a lot of bang for your buck. When set up properly you’ll get good sound quality with tons of volume. On board Xovers and DSP settings add value to the package. Priced at approximately $250each with free shipping (amazon or rockville site) you really cant go wrong.

All I can say is getting 2 of these subs have made my gigs sound SO much better. I don't know what took me so long to purchase them,I have seen other reviews of the RBG15S sub here in amazon where some people where "underwhelmed" by the sub. I have NO IDEA what they were listening to, but this sub will pull your house down, IF you know anything about subs in general and the fundamentals of gain/volume/crossover/boost. You might think, "well you have TWO subs, so of course they'll sound better and hit harder". While this IS true, I did my testing prior running only one sub (paired to a set of Rockville RPG 12's and it hit HARD. With both hooked up, EVERY and I do mean EVERY wall, window and fixture in my house were flexing and vibrating like crazy. It was so bad, even my garage doors were vibrating and squeaking, lol.Sub Construction - This is a very large and heavy sub, considering it is only a 15", weighing in at about 90lbs! I can't imagine getting the 18"s like I was initially planning The box is covered in carpet and has 2 slotted ports on the bottom front. There is also a blue LED on the front, so you can tell if the speaker is on (when in front of it, with no music playing). This light can be turned off. The box does not flex or creek and all the joints seem to be connected well. In order to move the sub around, I had to put them on my little mini trolly/dolly. The sub has 2 handles and these are also, like the sub, super solid. I never once was concerned about them coming off or anything. When I picked the subs up, likewise, I was never concerned about them flexing or falling apart.The sound - Like I've already mentioned, the sub is pretty powerful and if you know a thing or 2 about sub audio, you can get it sounding tight and fairly accurate. The sub has 2 ways for LINE IN/THRU being a combination XLR/1/4" port. The OUT is 2 XLR connections. For BEST sound I'd suggest using XLR from the Sub to your Tops, IF they are XLR. If your speakers are RCA only, you could do a cable with an XLR side and RCA on the other and run that form the sub to your tops. On the back is Level (aka Volume/Gain), a Crossover and Boost selector. I have my subs in the 11 O'Clock positions (-3) without any Boost options and the crossover at about 100hz. With this setting, the music my clients ask for [Reggae, House, Hip Hop, R&B, Soul and Jazz] sound GREAT. I did play with the Boost options (power and extended) for a few minutes, but these seemed gimmicky at best and fell off at higher levels, and to me sounded artificial. If you find the Bass to be over or underwhelming, you can cut that back or add it through your DJ Controller itself. I find myself adjusting it through the night depending on what I'm playing and at what time (Lounge, Dinner, Dancing). Again, I cannot over stress the importance of understanding Sub-Bass, Gains and Volumes and would suggest doing a little research on the net. If you don't have time for that, you can do as I did: 1) Avoid turning the sub ALL THE WAY up when testing. 2) run the tops first, then slowly turn the sub up until it fills out the bottom end, right to the point before it begins to play the same bass as the 12"'s. 3) Allow for a break-in period by playing your initial practice set at lower levels to give the speakers a chance to get going for the task.[SET UP NOTES]If you are using one sub with two separate speakers - simply run the left and right XLR out of your controller into the subs left and right Input/Thru and then run the left OUT to your left Top and the right OUT to your right Top. Nice and simple. For best sound, place the sub somewhere between the 2 speakers.If you are running 2 subs - run the left XLR cable from your Controller to the left sub Input/THRU and then run from the left OUT to your left Top. Run the right XLR cable from your Controller to the right sub Input/THRU and then run from the right OUT to your right Top. I know this seems like it shouldn't work, however, subs can work on a Mono channel, so having one signal to the sub is just fine. NOTE: if you run yours system like this, you will need to purchase On Stage SS7745 Adjustable Subwoofer Attachment or something similar so that you have one top over each sub, and then place the complete set to the left and right.All I can say is I love my subs and they sound incredible at an inside venue...