I have a gale 4070 sub. I was wondering if i would gain much more control and quality if i bought a more expensive sub. Dont really require anymore volume/power. I was thinking maybe MS309i to complement my MS 902i's and MS centre. Its all being driven by my CA640R
You may not need more volume, but you'd certainly notice the jump in quality more power will deliver. You can never have too much, but you don't need to use it.
I would imagine the MS 309 to be a solid upgrade over the Gale. At the same volume it will give less distortion, go deeper and with it's notch filter, you can sort out the worst peak in it's frequency response. You'd be amazed how much difference that makes.