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Upgrading SVS 4000 Subwoofers to SB16 Ultras

CO Guy Stuff

I upgraded from an SVS PB4000 and PC4000 combo that I was running in sealed mode, to a dual SB16Ultra pair. I both wanted to see how much more headroom I could get and what the differences, if any, there were to be heard between 'sealed mode' of the ported drivers, and a true sealed sub.
Equipment Used:
iPhone X
Shure MV88+ Mic:
Polk Audio LSiM707 Speakers:
Polk Audio R50 Speakers:
Yamaha RXV2085 Receiver:
Monolith 3x200 watt Amplifier:
Monolith Interconnects:
Custom Speaker Wires:
Various Acoustimac & GIK Acoustics absorption and diffusion panels:
Synology 1019+ NAS:
Seagate IronWolf Drives:

Recorded in Pure Direct, straight to and from camera. Source, Amazon Music HD over Airplay at CD Quality. YouTube does not support more.
Sound Demo videos are not monetized by me, all proceeds go direct to the respective copyright holders.

How To Place Speakers:
Polk LSiM707 Unboxing:
Polk LSiM706 Unboxing:
Polk LSiM702 Unboxing:
Polk LSiM707 Review:
Monolith 3x200 Amplifier Review:
Streaming Services Comparison:
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posted by sufiraswi