These shakers and TST’s are great for home theater, car audio, gamers, and drummers, if you want to “feel” the bass without the usual attendant high sound levels.  This creates a much more “realistic”, exciting experience, without booming the bass into your neighbor’s home, a nearby driver’s car, etc.  They can also work very well when used in conjunction with headphones

Aura Pro Bass Shaker

(Aura part number AST-2B-4)

This is a very good entry level unit.  It’s great for gamers, and also works well mounted on the botttom of a chair, if you watch movies on your computer.  Pairs or sets of 4 can also work well in home theater installations, such as in sofas, and in autos.  These are a very inexpensive way to experiment around to get an idea of the additional effect / realism these types of transducers can provide. 

Specifications: 
Power handling: 50 watts RMS/100 watts max. 
Impedance: 4 ohms. 
Usable frequency response: 20 to 80 Hz. 
Fs: 40 Hz. 
Peak force output: 30 lb.-ft.
Dimensions: 6.2″ Dia. x 2.5″ High. 

List Price:  $119.99;  Special Price:  $44.00

For additional Ordering Information please click here.

Notes: 

1)  Large qty’s are a special order item.  Please check with us for lead time (usually 3-5 days for us to receive them.)

2)  This is the same item as the Alpine SWS-BE45 BASS ENGINE.

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Clark Synthesis TST239 Silver Transducer

The Clark TST239 Silver Transducer is a good choice for driving chairs, recliners, or small sections of theater seating with improved realism, compared to “shakers”.  It will give “closer to the original” reproduction of different types of low frequency effects, than lower cost shakers, with more force.  This is probably the best choice at moderate cost, for most listeners looking for very realistic effects.

Specifications:
Power handling: 100 watts RMS/350 watts max; 
Tactile frequency range: 15-800 Hz; 
Audible frequency range: 35-17,0000 Hz; 
Impedance: 4 ohms; 
Transduction force: 2.2 lb-ft/watt;
Tactile force peak: 297 lb-ft; 
Dimensions: 8″ Dia. x 2.25″ High. (Ht. includes the mounting nut.)

Clark spec. sheet:  TST239-Silver-01.05.09.pdf 
Clark installation manual:  TST-20-Manual-for-Web.pdf
Clark White Sheet:  CS-Tactile.Sound.White.Paper-090223.pdf
(The white sheet is slightly biased in favor of their products, of course, but there is some very good information in this document.)
 
List Price: $149.95* ea.; Special Price: $99.00, any qty.**
(This is a limited time, limited quantity offer.)
 
*Note:  We have seen some websites showing list prices of $179-$194.00.  (Feel free to Google it!)  Who knows where they came up with that – Clark’s Retail Price Sheet*** clearly shows a list price of $149.95.  These are really NOT a high markup item – thanks, Clark Synthesis!

For additional Ordering Information please click here.
 
**Large qty’s are a special order item.  Please check with us for lead time (usually 3-5 days for us to receive them.)
 
***Accessed Feb. 23, 2009.

For REALLY exciting, knock-your-socks-off effects, even more powerful transducers are available.  Click here for more information

Other Information: 

1) Medium cost shakers and TST’s are effective primarily at moderate sound levels.  In fact, that is the whole idea:  To be able to “feel” the bass without turning the volume all the way up.  A setting for a good effect at moderate levels will overwhelm the shaker at very high levels… unless you have a lot of them or really expensive ones.  (The solution is to “turn down” the shaker(s) at high levels.)

2)  Your results will vary greatly with installation.  One important trick is to isolate the chair, sofa, etc., being “shaken”, from a floor that is very solid.  We can obtain special isolation “feet”, or, you are welcome to experiment on your own — in fact, we strongly encourage it!