ButtKicker BK-LFE Low Frequency Effect Transducer

ButtKicker BK-LFE Low Frequency Effect Transducer for Home Theaters

Brand:| Model: BK-LFE
Overview
Feel what you've been missing from movies, music, and games, with ButtKicker's BK-LFE tactile transducer! The patented magnetically suspended piston design provides the lowest frequency response of nearly any transducer made, and the virtually indestructible design will provide years of enjoyment.
Highlights
  • Patented magnetically suspended piston design
  • Lower frequency response than nearly any other tactile transducer
  • Nearly indestructible design, with thermal cutoff switch
  • Incredible power handling
  • Mounts to floors or furniture, transforming them into a Silent Subwoofer
Part # 
300-9400
Weight: 10.6 lbs.  
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Product Details

ButtKicker BK-LFE Low Frequency Effect Transducer for Home Theaters

ButtKicker® brand BK-LFE low frequency effect audio transducers have been received with rave reviews around the world since they were introduced in late 1999, and for good reason! Instead of using the traditional voice coil design of most tactile transducers, ButtKicker transducers are built using a revolutionary, patented magnetically suspended piston design. Not only does this design create more accurate low frequency effects (drummers swear by them for monitoring), it also lasts longer!

The magnetically suspended piston design pushes the resonant frequency of each ButtKicker transducer down to an ultra-low 9 Hz, allowing for a truly infrasonic, and usable, frequency range of 5 to 200 Hz! While other transducers produce their peak output at 60 to 80 Hz, ButtKickers are still going strong up to three octaves lower. A 3-1/4 pound piston is used within the BK-LFE for superior transduction force. 

One BK-LFE ButtKicker transducer can easily replace two to four bass shakers from other companies, and delivers the 4th dimension of sound with realistic tactile and sound effects such as earthquakes, thunderstorms, rocket launches, tidal waves, explosions, tornadoes, volcanoes, dinosaurs...  and high quality musical bass playback that you never knew existed on your music, movies, and video games. The ButtKicker BK-LFE is designed to be mounted directly to suspended floors, chair and couch frames (kinetic isolators are recommended and sold separately in the Related Items section), as well as platforms and risers. 

Each ButtKicker transducer piston is built using large gauge coil wire, and is surrounded by a large metal housing that acts as a heatsink. Should the coil wire exceed 150°F (75°C), an internal thermal switch disconnects the ButtKicker from the amplifier for cooling. This allows for years of maintenance-free use! Five-way binding posts offer nearly endless amplifier connection options, and all ButtKicker transducers are proudly made in the U.S.A.

Note: ButtKicker transducers are able to operate at any angle. For the best possible output, with the lowest possible distortion, it is recommended that ButtKicker transducers be mounted in their vertical, upright position. 

Specifications: • Power handling: 400 watts minimum, 1,500 watts max • Impedance: 4 ohms • Frequency response: 5-200 Hz • Fs: 9 Hz • Overall dimensions (H x W x D): 5.37" x 5.60" x 5.00" • Weight: 11 lbs.




Product Specifications
  • ApplicationLow Frequency Bass Shaker
  • Impedance4 ohms
  • Power Handling (RMS)400 Watts
ButtKicker BK-LFE Low Frequency Effect Transducer for Home Theaters
  • BrandButtKicker
  • ModelBK-LFE
  • Part Number300-9400
  • UPC898114000012
  • Product CategoryTactile Transducers, Exciters & Bass Shakers
  • Unit of MeasureEA
  • Weight10.6 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Reviews

ButtKicker BK-LFE Low Frequency Effect Transducer for Home Theaters
ButtKicker BK-LFE Low Frequency Effect Transducer for Home Theaters is rated 4.6667 out of 5 by 3.
Rated 5 out of 5 by from Cool!This is a GREAT addition to your LFE channel. I have a DIY TC Sounds LMS-R 15" that I simply LOVE. It's powered by a Behringer EPX-4000 into 4ohms. The sub is mesmerizing, but I have a difficult room in that it's open to the rest of the house so it sounds is fantastic but in order to "feel" the sub, which is entirely possible, it needs to be loud, like really really LOUD. The sub and the amp don't break a sweat but my wife and little girl can't sleep with all the windows in the house shaking, as you can imagine. So, with this addition I still have the fantastic sound quality of my sub with the added benefit of the visceral experience usually only attainable at really high volume or with a whole lot of displacement (i.e. two, three, four subs). This particular model needs a LOT of power. They're saying min 400 watts but I can assure you you'll need something north of 1000 to achieve it's potential. I tried powering it off one side of the Behringer EPX-4000 at 4ohms which is good for about 600rms and it was not sufficient. It worked, but when I bridged the amp I was able to realize the full potential of this ingenious little device. So, if you go this route plan to spend the money on a 1000+ watt amp (that does not have a sub 20hz roll off) and bear in mind that it will suck up a lot of power at peak, so try to keep it off the same line as your other amps. This really is worth the cost of admission (about $500 for the BK-LFE and the amp). It allows you to get response way below 20hz without requiring silly volume. I love it and highly recommend it to anyone who can't always listen at reference level.Also, mounting is CRUCIAL. Don't buy the mounting kit. Read the other review on here about direct mounting. It's informative and RIGHT! You can mount this to a 2"x6" and attach it to the frame of your couch and the results are dramatically superior to attaching it to a leg. I have a very large sectional so I sued at five foot 2"x6" and mounted the Butkicker in it's vertical orientation (as recommended) and then attached the 2"x6" three separate parts of the sectional's frame from underneath with screws. You'll then want to isolate all the feet of your coach from the floor (I have hardwood) with rubber furniture feet. This will allow the entire couch to transfer the energy of the Buttkicker. I have one Buttkicker and a 6'x9' couch and it's plenty such that all seven seating positions have prodigious tactile transfer.So, worth every penny. Highly recommended. But direct mount it and be sure to isolate all the feet of your furniture from the floor.
Date published: 2014-04-24
Rated 5 out of 5 by from Cool!This is a GREAT addition to your LFE channel. I have a DIY TC Sounds LMS-R 15" that I simply LOVE. It's powered by a Behringer EPX-4000 into 4ohms. The sub is mesmerizing, but I have a difficult room in that it's open to the rest of the house so it sounds is fantastic but in order to "feel" the sub, which is entirely possible, it needs to be loud, like really really LOUD. The sub and the amp don't break a sweat but my wife and little girl can't sleep with all the windows in the house shaking, as you can imagine. So, with this addition I still have the fantastic sound quality of my sub with the added benefit of the visceral experience usually only attainable at really high volume or with a whole lot of displacement (i.e. two, three, four subs). This particular model needs a LOT of power. They're saying min 400 watts but I can assure you you'll need something north of 1000 to achieve it's potential. I tried powering it off one side of the Behringer EPX-4000 at 4ohms which is good for about 600rms and it was not sufficient. It worked, but when I bridged the amp I was able to realize the full potential of this ingenious little device. So, if you go this route plan to spend the money on a 1000+ watt amp (that does not have a sub 20hz roll off) and bear in mind that it will suck up a lot of power at peak, so try to keep it off the same line as your other amps. This really is worth the cost of admission (about $500 for the BK-LFE and the amp). It allows you to get response way below 20hz without requiring silly volume. I love it and highly recommend it to anyone who can't always listen at reference level.Also, mounting is CRUCIAL. Don't buy the mounting kit. Read the other review on here about direct mounting. It's informative and RIGHT! You can mount this to a 2"x6" and attach it to the frame of your couch and the results are dramatically superior to attaching it to a leg. I have a very large sectional so I sued at five foot 2"x6" and mounted the Butkicker in it's vertical orientation (as recommended) and then attached the 2"x6" three separate parts of the sectional's frame from underneath with screws. You'll then want to isolate all the feet of your coach from the floor (I have hardwood) with rubber furniture feet. This will allow the entire couch to transfer the energy of the Buttkicker. I have one Buttkicker and a 6'x9' couch and it's plenty such that all seven seating positions have prodigious tactile transfer.So, worth every penny. Highly recommended. But direct mount it and be sure to isolate all the feet of your furniture from the floor.
Date published: 2014-04-24
Rated 4 out of 5 by from Direct Mounting is a MUST!Evaluation of the ButtKicker LFE Kit by Rob ParkhurstWhen the ButtKicker LFE kit arrived, I tested it using the mounting kit included. Then mounted the transducer directly to the couch. Here are my findings:My couch has its foundation on a rectangular shape angle iron frame with 8 hard rubber feet. This foundation is about 8 inches inside the parameter of the couch making it so you cannot use the mounting kit with the transducer outside the parameter of the couch. The couch has recliners on each end of the couch and a middle seat that does not recline. This middle seat has plenty of room under it to have the Buttkicker transducer fit there. So I put the mounting kit with transducer mounted toward the center of the couch in the middle seat area with the angle iron frame resting on the mounting kit on the round rubber mat provided.First try, I set the low cut off to off and the high cut off to the on position and set it at 50 Hz. The volume I set to about 10 O’clock position and first played a CD of songs I complied that have very low frequencies on them. I first noticed that my subwoofer didn’t seem as obvious as without the Buttkicker, yet didn’t notice anything from the transducer yet. I increased the volume to 12 O’clock position. Now I could feel that something was rattling the couch. Not sure I like this with music. I need to put a movie in with plenty of LFE.U-571 chapter 15. Now we’re talking. I wanted more so dialed up the volume to about the 2 O’clock position. This seemed close to the right volume. War Of The Worlds has TONS of LFE, especially when the machines come up from underground. This really shook the couch. This is a sensation that is different than just a subwoofer rattling the walls and furniture. It provides more directional information, but I am not sure how. Star Wars The Phantom Menace at the pod races had the effects of side to side shake as the racing pods went from side to side of the screen. Very cool effect that I didn’t have with just the subwoofer. How does it do that with just one transducer? I guess it is the way the surround speakers combine to provide the directional input and the transducer adds the tactile sensation.Blackhawk Down it felt as if I could feel the downwash of the chopper blades as they passed over head. It was a very real and being there sensation. I am not clear how it does this but it is impressive and involving. Once you get the settings to match up with your surround speakers, it is just amazing how much this adds to the overall experience.I have now mounted the transducer directly to the couch by first mounting it onto a 2”X6” pressure treated pine board. I used ¼” X2 1/2” bolts with washers and ¼” nuts. I drilled four holes into the angle iron couch foundation and used ¼” X 2” bolts with lock washer/washer and ¼” nuts. This seemed very solid and should transfer the vibrations more consistently throughout the couch.The first test is again with music. A very different experience this time. The vibrations from the transducer are much more controlled and seem more accurate. I am really liking this as it adds warmth to the music that it didn’t have before. Keep in mind that my subwoofer can rattle my whole two-story house, but this at moderate listening levels is providing a gut level warmth that just my sub did not.This same CD with the standard mounting kit gave a less controlled vibration. It didn’t translate into the warmth that I am experiencing with the direct mounting. This is a major improvement! As I stated above, with just the standard mounting kit I did not like it with music. Direct mounting the transducer to the couch changes that totally. This is as much of an improvement as adding my subwoofer to my audio system. That said, this is NOT a replacement for a subwoofer, but it really adds to a system that has a subwoofer.This test CD has tones that start at 10Hz. Using the mounting kit, I didn’t notice anything until 20Hz and it really gave a rattle/uncontrolled vibration at 25Hz. Direct mounting gave a much more controlled vibration starting at the 10Hz and continued on up. The rattle/uncontrolled vibration is gone.The Sheffield Lab Drum & Track Disc revealed great tactile feel for the drums just not experienced before. Not just the bass drum, but the snare drums too. The delicate tactile feel is just great. This is a wow experience! It is making the hairs on my arms stand-up and take notice.Classical music is great with this direct mounting. The 1812 with real canon fire was very uncontrolled with the standard mounting. With the direct mounting it is controlled and adds impact at lower volumes. Without the ButtKicker, I would turn up the volume to get the subwoofer to rattle the house when the canon fire hit. I can get realism of the canon fire at much lower volumes with the ButtKicker. The same with pipe organ music. Bach’s Toccata in D minor, Holst’s March First Suite in E-flat major, Verdi Requiem Dies Irae, and Beethoven’s Fur Elise are all enhanced with this direct mounting set up.Time to go to the movies with the direct mounting set up. U-571 chapter 15 rendered more controlled explosive charges. It was more subtle and realistic compared to the rattling it did with standard mounting. On War Of The Worlds I had to turn the volume down as it was bottoming out. It bottomed out before with the standard mounting but it is more noticeable now. This is not desirable. Bottoming out is a major distraction making you very aware of the transducer under you. It is far better to not know there is anything under you and think all the tactile sensation is coming from the subwoofer. It is all that much more engaging and realistic.Gyro Drums on Animusic 2 was noticeably warmer with more tactile feel resulting in a more engaging experience. Heavy Light also from Animusic 2 gained warmth and smoothness with this direct mounting.In my humble opinion, the difference in results, comparing the ButtKicker LFE using the provided standard mounting to direct mounting to the couch is like comparing a cheap $100.00 subwoofer to a well designed $1,600.00 subwoofer that is well matched to your audio system. The difference is that great, at least in my experience.Would a home theater be improved with a cheap subwoofer if it didn’t have one before? Yes, but how much more so with a really nice subwoofer that provides accurate low frequencies you can feel and blends well with your main and surround speakers.Reading on blogs how some will only use their subwoofer for movies and not for music tells me that they don’t have a subwoofer that blends well with their other speakers. It will add to the LFE in movies that the other speakers will not, but fails at adding lower frequencies found in music that blends well with the main speakers. Without direct mounting, that is how I feel about the tactile transducers.The inherent problem here is that those that would like to try a tactile transducer to see if it would benefit their audio system is most likely going to only try the standard mounting. The big plus the standard mounting has is that it only sits under one leg of the couch. Very easy and simple to place and remove for a quick test of the tactile transducer. And if that is the only way I would have tested it, I would not want it for music at all but would have found it worthwhile for augmenting the Home Theater for those movies with lots of LFE.The direct mounting makes a huge difference in the results. It is well worth the added trouble to direct mount the Buttkicker LFE to your couch. If you have the room under your couch to direct mount it, do it.The isolators provided with the kit were very soft and could not support the weight of the couch and the weight of people on the couch. They just smushed flat and the washer that was in each one came out.I ended up not using them. The couch’s hard plastic feet sunk into the carpeting. I had to have the volume at the 3 O’clock position on the amp to get the right tactile feel out of the transducer.My contact at The Guitammer Company told me to get the larger and more firm isolators for the couch. He said that they would transfer much more energy compared to the couch sunk into the carpet. The result will be the ability to turn down the volume and still get the same tactile feel.I secured 8 of the RI-4 isolators recommended and installed them onto the couch. He was totally correct on the volume issue. I had to turn the amp down from the 3 O’clock position to the 9 O’clock position to get the same tactile feel. The biggest advantage here is that I am not bottoming out now. I am getting improved dynamics at the lower volume setting. This is a significant improvement over the hard plastic feet sunk into the carpeting. The firmer and larger isolators make a significant difference that should not be over looked. I am really surprised the difference the larger isolators make, I really didn’t think that they would make that much of an improvement. I was wrong. Use the larger and firmer isolators. It is like tripling the power of the power amp and no bottoming out with more dynamics. You definitely want to use the right size isolators for your application.
Date published: 2012-11-15

Product Q&A

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ButtKicker BK-LFE Low Frequency Effect Transducer for Home Theaters

Of what material is the heat sink housing made?

I presume it is steel or iron. A quick check with a magnet will tell vs. aluminum.I'm curious if the housing also functions as a magnetic shield as is often the case with powerful Neodymium magnet speakers.
Asked by: FaraDave
The housing is aluminum. It serves no purpose other than to protect and act as a heat sink for the internal components.
Answered by: MattP
Date published: 2013-11-01

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