Anyone know how to calibrate a Transducer (Buttkicker, Clark Synthesis)

[jay21112]

So I'm moving around my theater room in preparation of adding 2 new subs, and I spend 2 hours calibrating it last night with a tape measure and an SPL meter, making sure everything is perfect.

Then I go to calibrate the 2 buttkickers I have hooked up to the LFE and the 2 Clark Synthesis Transducers I have hooked up to the rest of the speakers, and my only way of calibrating them is with my butt. ...seriously, I sit on the couch, put in a movie and go..."yup, that feels right."

For someone as "type A" as me, this drives me nuts. Do you know of any equipment or methods for calibrating transducers. As long as it wasn't insanely expensive, I would definitely deem it worth it to by some calibration equipment if it meant I could actually get some measurable, repeatable, accurate results.

[Grador]

It's your butt, the reason it's so difficult to calibrate by feel is the same reason it's not that important. Do you have any solid issues with them, or just general worrying?

[jay21112]

General Worrying. The fact that I have no idea what it's supposed to be. It's like changing speaker levels by listening to your favorite song, saying "That sounds right." Or calibrating the picture just from your favorite movie, saying "That looks right."

There is no neutral point to strive for. Just a shot in the dark saying "That feels right." I mean I spent so much time and money to make everything sound and look right, to just randomly stab in the dark at the transducer calibration kills me. I feel like getting it wrong takes away from the audio and visual aspect that's been dialed in perfectly.

There has to be some test equipment out there somehow. Maybe a motion sensor that's somehow calibrated to the equivalent of the 75 db audio level?

[Grador]

There really isn't a correct level. It just really depends upon how strong you want it to be.

[jay21112]

Unfortunately that's the only answer I've found, and I don't accept it. I think it's the only answer out there "right now." But one day, if transducers become more common, there will be a standard for them, and a way to measure and calibrate them to that standard. Guess I'm calibrating from my butt for now.

[TLS Guy]

Unfortunately that's the only answer I've found, and I don't accept it. I think it's the only answer out there "right now." But one day, if transducers become more common, there will be a standard for them, and a way to measure and calibrate them to that standard. Guess I'm calibrating from my butt for now.

If you had a sub properly calibrated you would not need a dumb *** butt kicker!

[jay21112]

If you had a sub properly calibrated you would not need a dumb *** butt kicker!

False. You are trying to use a sub for something other than what it was intended to do. Subs are not made to reproduce the "Feeling" of an explosion. They were made to reproduce the "Sound" of the explosion. Yes, high enough, they also produce tactile sensation, but that is a by product, and not something the piece of equipment was made to do. It's like trying to use a surround speaker for a front speaker. You could do it, but it wasn't made to do it, so the results will never be what they should be.

A tactile transducer is a completely separate piece of equipment made for a specific purpose and "should" be able to be calibrated to a standard just like every other.

[TLS Guy]

False. You are trying to use a sub for something other than what it was intended to do. Subs are not made to reproduce the "Feeling" of an explosion. They were made to reproduce the "Sound" of the explosion. Yes, high enough, they also produce tactile sensation, but that is a by product, and not something the piece of equipment was made to do. It's like trying to use a surround speaker for a front speaker. You could do it, but it wasn't made to do it, so the results will never be what they should be.

A tactile transducer is a completely separate piece of equipment made for a specific purpose and "should" be able to be calibrated to a standard just like every other.

If you get your sorry backside too close to a real explosion, it will blow it off.

What would blow it off. It's a pressure wave of course, and that's what a sound wave is.

Of course a good sub and speaker will produce a sound (pressure) wave big enough to shake you in your pants.

My rig rumbles the whole floor and chair without even breaking a sweat or sounding in any way boomy.

I can assure your bottom shaker should be superfluous.

Just dial it in to get whatever rumble effect you want in your derriere. In any case you could only calibrate your device with a transducer implanted in you. Everybody's anatomy is different.



I was just trying to calibrate my Butt kicker, honest doc!

[jay21112]

If you get your sorry backside too close to a real explosion, it will blow it off.

What would blow it off. It's a pressure wave of course, and that's what a sound wave is.

Of course a good sub and speaker will produce a sound (pressure) wave big enough to shake you in your pants.

My rig rumbles the whole floor and chair without even breaking a sweat or sounding in any way boomy.

I still don't believe that a good sub does the same as a transducer, but I won't argue the fact. What about the transducer setup to the rest of the speakers. How loud would the surrounds have to be to actually impart vibration to you? So in this case (surrounds) you must be able to see that a transducer and a speaker are very different and can't possibly be one in the same.

...but ok, ok, ok...I'll go sit in my chair and guess...

[TLS Guy]

I still don't believe that a good sub does the same as a transducer, but I won't argue the fact. What about the transducer setup to the rest of the speakers. How loud would the surrounds have to be to actually impart vibration to you? So in this case (surrounds) you must be able to see that a transducer and a speaker are very different and can't possibly be one in the same.

...but ok, ok, ok...I'll go sit in my chair and guess...

Actually the speaker at a distance will be the most realistic, as it vibrates everything else as well.

What the butt kicker has to do is convert a gas pressure wave (sound) into a fluid pressure wave. Why a fluid wave? Because our bodies are 90% water. So the butt kicker sets up a fluid waves in the tissues of your backside which sets of sensory pressure receptors in the tissues and transmits them to your brain. So you could only calibrate with a transducer in your tissues. So you will have to use natures transducers, which responders told you to do in the first place.

Now in an actual event the shock wave transmits through your body to set up the fluid waves. Fortunately this is inefficient, otherwise terrorists could blow a lot more people apart than they do now.