ButtKicker Advance BK4-4 4-Ohms Low Frequency Transducer

This is great as-is, but would definitely benefit from EQ fine-tuning based on case-by-case usage. Meaning, you might want a different gaming profile from your music/movie listening profile. The amp I use this with has a LPF, so I just adjust that for my preferences, and that's enough for me. More discerning ears might want to get (probably already have) a quality EQ program to dial in the performance. On a technical note, it's worth mentioning that the claimed frequency response for this goes down to 5hz, and while that's below hearing range, you will feel the difference with this device. Most amps (including the one I'm using) only go down to 20hz, which is probably enough for most people, but again, discerning ears might want to spend a little more on an amp that accommodates the extended frequency response. An example where this difference would be felt would be in explosions/action scenes, engine notes, and gaming impacts.

This brought my home theater from great to EXCELLENT, the rumble in this thing is insane, I use it with a subwoofer so I get the full range of sound, it feels like I’m in a Dolby cinema or IMAX, love this, it really elevates movies and music

This is my first review for Amazon. I purchased these because I upgraded the seating in my HT. I was previously using Bass Shaker Pro's for my seating. The old unit simply would not fit in the new chairs. The new seats were specifically designed to accommodate the BK4's. I have many years experience with tactile transducers. The BK4s do a fine job of transferring the LFE signal into earth shattering vibration. They were simple to install and fairly well documented. The only issue I have is the price. They are a lot more expensive than the Bass shakers I am replacing but I don't "feel" any difference. I do have 1 unit mounted in each chair. Perhaps they can produce higher levels than the Bass shakers but it is not needed for a single chair application. There comes a point where the effect is distracting from the movie experience rather than a cool addition.

I bought this years ago and it's been working great ever since. I used it for a custom bass-player platform along with a $40 mono audio amp (from Amazon). Basically, the volume control on the amp controls the level of vibration on the platform. I love it!

I just did a comprehensive test on BK transducers for a sim rig setup. I tested the Gamer 2, mini LFE, Advance, and full size LFE. The gamer and minis give good feedback and add a lot of immersion, and the LFE really puts out the low end, but these are by far my overall favorite for feedback. These just give more of everything than the minis, and the larger LFE actually struggled with providing detail over 50hz. I ended up going with these for a 4-corners setup, plus an LFE for filling out the low end. Nothing compares to the LFE at 45hz and under, it's like comparing an 8 inch subwoofer to an 18 inch one. These did have a 5db peak in the 55-60hz range on my rig, and removing it with eq made them so much better. I used quite a bit of eq evening out the low end below 30hz as well, but fixing that 55-60hz peak was a game changer. I'd highly recommend getting a miniDSP unit for the parametric eq, it's *very* worthwhile to smooth out frequency response. I got the 10x10 HD since I needed 5 outs, but a miniDSP 2x4 HD should work for a single or dual transducer setup and runs around $200. 100% worth it. I'm pretty sure you could use the digital ins to get a 4 channel setup working on the 2x4 HD as well since it has 4 analog outs, but am not sure on that. Their manuals are good so it should be easy to figure out. These are power-hungry. I needed to use class D amps since I only have a single 20AMP breaker feeding electricity to the room where they are installed, and ended up needing 500 watts RMS per channel to get the most out of them. I started with 350 watts and it wasn't enough for what I wanted out of them. I'm guessing you could get by with less power with a class AB amp though. Update: I had some important findings with mounts that are worth mentioning. I found a lot of advice online saying that a mount that has some flex adds efficiency, but found the complete opposite to be the case with an 80/20 rig. The firmer the better. I used 3/8” aluminum plate to mount these and 1” plate for the LFE. With a rock-solid mount I could really turn up the volume without clipping. I tried cantilevering one end of mounts to leave some flex as an experiment. It makes them bottom out at low volume and not perform well at all. Even with a firm mount some locations just didn’t work great. If the performance doesn’t impress, then make sure to experiment with mounting. Also make sure they are in a vertical orientation (so the top of the unit is either facing directly up or down). I’m convinced that most people who complain about these bottoming out and/or feeling underwhelming have them mounted incorrectly. One more update on integrating an LFE with these. Running the LFE in parallel led to some phase problems where it would cancel out the feedback at times. It was really inconsistent, sometimes ok and sometimes a problem. Running the LFE at half the frequency of the corners worked like a charm. So for example if tire slide was at 50hz on the corners and at 25hz on the LFE it made everything come together.

Horrible experience with seller. Speaker did not put out a deep bass and the return process is trash. 50% re- stocking fee. Do not buy from this seller.

It works as expected, but I wish I could crank it up to around 400W sustained without overheating protection kicking in. Bolted it to my IKEA Markus chair with a thin wooden board. I use it mostly for flight sims in VR, really adds a lot to the experience especially with software that works seperatly from the game's audio using the game's telemetry and allows you to customise the gain and sound file of each effect. I've used it for music with headphones as well and it does the job well enough for the low end. In flight sims it does overheat especially with sustained engine rpm effects and the like which takes around 10min wait for the transducer to be usable again with active cooling. It took me a while to find a compromise that works between setting the gain for certain effects and lowering my amp's gain to around 200W. With a fan it can be pushed higher. It is plenty powerful at around 200W, but I do love the tactile feedback at higher gains and wish I could push it higher without overheating after 30min of playtime.

this is my second device that is now combining with the other under my couch which is wired in series.Which now gives full range when they both work together. Its nice effect.Subs give airborne flow in the air while buttkicker gives the sense of feeling whats going to happen with very low frequencies. Its like someone is standing waiting for a train coming and your body is sensing with that emotion that its coming. I can see how these products came about ,with now theres motion code.But this product is a nice start for something opitional to have . Its worth buying.

Livraison très rapide et produit super dans la boite d'origine. Super vendeur !