Bare in mind that using a sub takes a huge load off the amplifier . No movie i ever watched drove all channels to full power at the same time ever. JC is correct that your amp is still going to be underpowered depending on room size and listening levels and whether it is capable of driving multiple 4 ohm loads. If you have pre outs get an outboard amp for the front 3 .

Not a real slouch , specs as measure sound and vision.
https://www.soundandvision.com/content/marantz-sr6006-av-receiver-ht-labs-measures

Only rate 6 or 8 ohm

DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry