Brand : PreSonus

PreSonus StudioLive 18sAI Active Integration Stage Subwoofer

Skins & pies |

Very good powered sub!

I purchased this sub from another source and am writing this review since there are no others. in fact, there are very few reviews for these fine speakers on the web...not sure why. my back ground: a part time armature musician, some time dj and regular home theater enthusiast. my quest last year started when i initiated a search for a sub-woofer that would be a perfect balance for all my applications. the first part of this review was copied from an earlier post on another site, followed by an update. well i got the 18sai and calibrated it to my receiver and room with audyssey. much to my surprise, the unbalanced direct connection via 40 feet of shielded coax is producing a very clean signal throughout the full range of the level adjustment. i needed no ground lift. i have this plugged into a wireless controlled outlet, and there is absolutely no pops or clicks when i power it up or down. the first movie i put in was the lord of the rings (return of the king) bluray. the 18sai did a very good job of reproducing the lfe channel once i made a small adjustment (1.5db lfe increase) after audyssey. it does a good job with deep bass, but i am still not quite sure yet how low it will go. i will run some test tones through it when i get a chance. i do know it was rocking the sofa pretty good :d concert blurays sounded quite good as well. i think a an adjustment with the delay settings on the receiver will bring it all together quite nicely, as the music sounded a little "loose" on some discs. i haven't had this out in a live venue yet, but i am confident that it will be a performer. all in all, i am real happy with this unit thus far, and i am looking forward to getting it zero'd in over the next few weeks. since that last review i have had the opportunity to dj with this sub a couple times now. i teamed the 18sai up with a pair of mackie srm450's (original version) in a hall with 75 to 100 people. the mackeis were on the stage and the presonus was centered on the floor at the base of the stage. i had the delay setting set at 2 meters to compensate for the distance offset with the mains. i did not engage the high pass filter on the mains, as i did not seem to have cancellation issues in this particular setup and venue. it did not take long to get everything zeroed in, as i was able to get a good sound right off the bat. i started off with the input gain on both, the makies and the presonus set at the 12:00 position. i ended up with the mackies at 1:00 and the presonus at 3:00. the music sounded great at a medium volume. i was really happy that the 18sai really dug deep with some clean bass. i did not have the volume up loud enough to get that chest thumping bass, but i am pretty sure i had the capability to get there. at the end of the night, the mackies were very warm to the touch, whereas the presonus was lukewarm. i will note a little anomaly (perhaps) i had before my first dj gig. while at home doing a test on the rig at high volume, i noticed that i was clipping the presonus pretty good. i immediately turned it down and it wasn't long after that i had that familiar electrical burnt smell. i was concerned that i may have started to burn the voice coil, but if that was the case, i'm not sure why the over-temperature protection did not kick in. i have not pushed it to that level again and it is performing great ever since. since this sub was still a virgin at any type of high levels, i'm hoping that it was just breaking in, or, if the voice coil did start to over heat that i stopped it before any real damage was done. at any rate, i have had it at some moderate levels since, with a good clean sound and no problems. i really wish i had some experience with some of the other manufacturers subs in this class, but unfortunately i don't. if you are reading this i'm sure you know there are some good units out there. i'm sure i would be satisfied with a qsc kw1801, jbl prx718xlf or an electro voice etx 18sp. for me, this 18sai fits the bill for use in my home theater as well as live gig setups. i'm not sure if some of the others would be able to reach quite as deep. next on my wish list to complement this presonus would be a pair of presonus 328ai tops and a soundcraft ui16 digital mixer that would allow me to walk around the venue and eq with an ipad. hey, what the heck...since i'm filling out my wish list, i might as well include another 18sai.

Computers friend ltd |

The quality of the sound the how loud it is without actually causing any discomfort

i was first introduced to the presonus brand back in 2012 when a friend of mind bought a 24.4.2 no ai classic mixer the sound was so good and when i asked about the board he told me that this is digital mixer .i was like what??? the mixer has such a analog feel to it but with all the features and dsp of a digital mixer i checked out the website and learned more about this awesome company and even though they are serious people with when it comes to there gear they always know how to have fun with the webinar's and conferences. on to the review, i bought a pair of these boxes after hearing them in a dealers store and man are they clear really clear i guy stood next to me and said that they weren't loud enough and he played some other brand to tell you the truth my teeth started hurting when the speaker started playing when that mid range was being so loud and started to distort , anyways i knew what i heard and since i have had these boxes i have no complaints and everyone who hears them likes how they sound for larger venues u may need a subwoofer which i plan to buy the same brand of course as well as two of the 315ai which will go along with my 16.4.2 ai mixing console the perfect active integration eco-system have a listen to the videos and let me know what you think as well

Michael s. stephens |

They sound like giant studio monitors!

These sound like giant studio monitors! crisp, clear sound. i've been running sound for 15 years now, and i used to do it professionally. i heard these for the first time when my passive jbl's horn went out right before a pretty well-known musician came into town. luckily, his band brought these as a backup. since he was doing a mostly acoustic set, we didn't even need the subs i had hooked up! these have great low end, which can be shelfed if you already have subs. the wireless control is pretty intuitive and easy to do. running these in front of a presonus studiolive 24.4.2, i did run into slight distortion as i cranked the output. i've heard these speakers put out more volume than it was giving before the distortion, so i think it was a problem with the board's output (though the meters nor the main stereo output knob were maxed out at the time). while these give you a lot of power, don't expect to blow anybody away. two of these work well for a full rock band with about 250-300 people in many venues, but you'll want more if you plan to go crazy.