Subwoofers - crazy upgrade!

@lewinskih01 

The corner placement is also a good location. I ended up moving mine out about 12". An added benifit is running the bottom sub at 40hz and the upper sub HIGHER at around 60hz to gain midbass. They MUST be stacked as close as possible to couple properly. Feet removed. Thin rubber shelf liner between them.

• Double the amplifier power = +3 dB
  • If each subwoofer has its own amplifier producing the same output as before, you've doubled the acoustic power.
  • Doubling power gives a 3 dB increase.
• Double the cone area = +3 dB
  • The cones are moving together in phase.
  • The effective radiating area doubles, so they move twice as much air.
  • That produces another 3 dB.

GET THREE MORE AND ELIMINATE STANDING WAVES.

@asmithkash 

In small rooms, does everyone still recommend subs with full-range speakers?

The definition of 'small' is an important detail. It's probably not recommended because you might have to tune it to sub-optimal levels for the money, but it's 100% possible. Room calibrated flat bass should not be an issue assuming the software can make it flat. Isolation feet will definitely help with too much bass in a small space.

I love my tight direct servo 12in Rythmik F12G subs that use GR Research servo paper woofers.  I got 2 of them.

My video:
https://www.youtube.com/watch?v=oI87QPDxKLE

@tcutter , Thank you.