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Connection Options for the BS-200                              Link to a helpful Video
BS-200 with A- 400 to A-407
The connection posts of the BS-200 are of adequate size and will accept twin 2x2.5 mm diameter cables.
Optionally separate cables can be run from the amplifier. As shown, a parallel hook-up will result in 2x BS-200 each at 4 Ohm = 2 Ohm Amplifier load = ok for the amplifier or any other 2 Ohm compatible power amplifier.
This provides the following advantages: parallel series
1. The amplifier output is the highest at 2 Ohm
2. 2x BS-200 share the vibration intensity in a more effective manner than by using only one unit.
3. One unit each will be required for each separate seat.
If seats or seating furniture are placed on a sub frame, they are best driven by 2x BS-200 positioned at different locations.  (Diagram  would be of advantage)
4. The load input is doubled and vibrator coils will not overheat.
5. The vibrations gain in depth and impulses remain tight with good presentation being maintained.
Amplifier Adjustments
Most practical is the utilization of the variable "SUBSONIC."  Turn the control clockwise until the vibrations become slightly weaker; therefore, the ineffective frequency range (waste output) will be filtered out.  This reduces the load of the Body Shaker and Amplifier, but in turn it provides more usable power aiding in the effectiveness of the system.
With "PHASE" the corelation and relationship of the Body Shaker and the Subwoofer is optimized. This is accomplished by operating both at approximately 150 Hz. and by turning the Phase Control clockwise until the loudest/strongest signal is realized.  Both are now in phase.
Finally, the limit of the desired high frequencies should be set. We recommend 50-70 Hz. However, for games and car racing programmes, etc. it might be of advantage to operate the BS-200 up to 150 Hz.

Tuning the Body Shaker and associated equipment in a different manner will invariably produce unsatisfactory results. A more pliable/looser magnet mount = lower resonance frequency and lower compliance, resulting in a muddied response. Greater weight of the vibrating parts will produce ringing and overhang, resulting in unprecise reproduction. A longer coil for greater excursion results in increased decay.
As it is the case with bass speakers, two small chassis are better than one speaker with a large membrane. The lesser the weight of the smaller membrane and mass of the motor is, the likelier it is that the result will be in better performance.