Subwoofers - crazy upgrade!

@gdaddy1 

Could you elaborate why the 6dB boost?

I could understand 3dB "boost" just because you are doubling the cone surface. Acoustically, both cones will act as one device. But can't understand what would drive the additional 3dB boost.

I did add a REL sub years ago and enjoyed the improvement. Later I replaced that sub with two Rythmiks F12 and it was even better. Later added another two F12 and was better again. The last improvement was implementing Mukti Sub Optimizer (MSO) for the 4 subs (placed in the 4 corners) with  MiniDSP 2x4HD and it was an improvement again. It has been a journey for me.

@asmithkash 

I'd suggest with small room you'd do better with monitor speakers and dual smaller subs. Try to keep them pulled out into your room still, and definitely playbaround with room treatments and listening position. My room is 12wx10d and I have my speaker front baffle 45" from front wall. Subs are out 36" and just inside main speakers.

@buellrider97 

I can enthusiastically recommend the Audio kinesis swarm. I’ve been using it for the past five or six years and it does brilliantly with the Dayton SA 1000 amp. I bought a second amp to have stereo. You can’t go wrong for the money. I posted a link to thread above that gives my impression and some data for the impact four subwoofers have

Subs rock...glad you found them useful.

I implemented two Martin Logan Dynamo 10 subs in my main system (Paradigm Persona 3F speakers).  I specifically wanted their built-in Anthem Room Correction (ARC) and the remote app.

Between those two capabiities and using a UMIK-1 and REW,  I’ve gotten great results in my small-med room with the subs both leveling the lower end and providing a very nice lower end extension.  (60Hz low pass).

I may splurge for the Paradigm XR11 subs down the line, but no hurry, as these little M-L's are working nicely.

I also use two SVS subs in my a/v system which has an Anthem MRX controlling them (and all channels) with ARC with great results in that room, as well.

@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.