I have similar set up.I have EFE passive decoder.The sub woofer out put from the passive decoder does not work very well.
I tried to connect the sub woofer to the 2 additional out puts of pre amplifier.Still no usefull bass.
Now I have 2 dvd players ONKYO and Panasonic with addl sub woofer out puts.They work well with 2 channel sound.
That is what I am using now for CD and DVD movies. It works very well.The T 36 speakers have good bass output.
I tried to connect the sub woofer to the 2 additional out puts of pre amplifier.Still no usefull bass.
Now I have 2 dvd players ONKYO and Panasonic with addl sub woofer out puts.They work well with 2 channel sound.
That is what I am using now for CD and DVD movies. It works very well.The T 36 speakers have good bass output.