Bass shakers just won't work...

You need an outboard amplifier ( not a separate receiver ) to drive the bass shakers. Parts express sells inexpensive amps that will do the job (figure 100 watts per shaker should do the job). Btw hooking up your subs preout to your CD input won't work.

Are the bass shakers mounted or just sitting there on a table or something? Also, are you listening to 2 channel music or 5.1 movies?

Plug the cd player to the sony and connect the shalers to the speaker outputs and see what happens. Bypass the Onkyo altogether just to test.


Keep cranking,

Robert

if you are using a receiver to power the buttkickers you need to set the receiver channels for full range output on the channels used for the buttkickers

you also need a low pass / high cut filter in there for about 45hz which is around the recommended crossover

anything above that will come out as sounds etc and not shaking as it should be.

so for the sony receiver, you want to make sure to set the channels to full range. but you still need the low pass /high cut filter

It is RECOMMENDED to get a external amplifier though.