Tactile transducers work best with their own separate amplifier. Now the question is where to “tee” the line level signal from?
• You could use the tape outs of your receiver/preamp, but I would recommend a variable level output. It is nice having one volume control adjust both the speaker SPL levels and the transducer volume levels. Having two different gain knobs that require constant adjustment is a pain. • They need to have a sharp LPF (low pass filter) / crossover setting of about -12 to -24dB/octave at around 80 to 100Hz. Otherwise you will hear the higher frequencies emanating from them. It is not cool to here voices coming from your couch. So you either need a separate crossover or just use a Y connector and send the transducers a line level tap off of the subwoofer output from your receiver/preamp. Using the subwoofer line level output has the additional benefit with AC3/DTS systems in that you will also be feeding the LFE (Low Frequency Effects) channel to the tactile transducers. • Using the subwoofer line level out of an AC3 receiver/preamp is ideal.
