i would go w GR research dual open baffle servo subs either a DIY kit if you have build skills or already made
would be far better for the $ than ANY you mentioned ! Vandersteen? OMG those are crap !
if you want to go more old school watch some of the audioholics YT videos about subs they suggest combining sealed and ported subs one of each
multiple subwoofer home theaters. The benefits include:
► more even bass distribution across the seating area
► better seat to seat consistency for more effective EQ
► more output and LF coupling factor for deep extended bass response
Ever wonder why some AV receivers have only one subwoofer output while others have two or more? How do you determine if the dual subwoofer outputs are independent or parallel and why does that matter? We discuss all of this in this video and show you with measurements why it’s so important to get the proper time alignment in a multi-sub system.
Multi-Subwoofer Set Up & Calibration
•Choose your subs wisely-preferably all identical subs or subs with near equal f3 (3dB rolloff) points
•Place your subs wisely-in home theater rooms, nothing is more important for achieving good bass than proper placement of your subwoofers and listening seats
Multi-Subwoofer Set Up & Calibration
•Make sure all your subs are playing the identical signal -all of your subs should be playing a mono signal that consists of summed bass from all speakers set to "Small" plus LFE info
•Setup bass management-in your A/V processor/receiver, set all speakers to small, use 80Hz crossover setting as a start, and defeat the internal LPF of all of your subwoofers
the common question of whether or not you can mix sealed and ported subs into your home theater system and get good bass. I discuss the problems in doing this and how to overcome them to ensure you get good bass integration and avoid losing very low frequency response due to phase cancellations.
Many good YT videos on the topic!
https://youtu.be/xo2xkjJ_-zk?si=iiUQTqK81djMtHaB
https://youtu.be/w1LG1m1tR8w?si=a2vvxTyS46b6vxQk
https://youtu.be/ypQu4FncAjk?si=t7sXlonDb-dLpBrY
https://youtu.be/8XE1JsfqKtA?si=pjR9cPiF-RJXvXBz
https://youtu.be/CbAO4-F5Ejo?si=erIyC3pXTW-ea0TP
https://www.youtube.com/live/qxKRinIaGnc?si=w6fHQrNid6jkI8D9
https://youtu.be/7ieX40Ktaxs?si=ZSNaLN4w_m8vdChN
GR research subs :
https://gr-research.com/product/sub-series-double-trouble-with-flatpacks-copy/
https://youtu.be/1Q3QQPO7y04?si=pKYBmMzxtmBFkrU_
World Class Subwoofer Kits
Our Open Baffle Subwoofers use Direct Servo Technology and offer the quickest, cleanest bass that money can buy. There is no other subwoofer system that will give you this level of control and customization.
yea, go GR research for subs i am .