Subwoofers - crazy upgrade!

Primarily for home theater? Definitely a good thing. Especially if there’s tanks.

I have an ASW 2000 from b&w, 12 inch woofer, no DSP, very complicated connection opportunities in the back, that’s 25 years old. It’s a monster and can shake entire house.  

seems to work equally well wherever I put it, which is now 4 feet behind a sofa which doesn’t sound ideal. Achieves its purpose for home theater. I got it before the marketing initiatives basically require subwoofers for all newly designed main speakers that have limited bass driver dimensions - I got it because it also was a good table at the time.

@tcutter , Wow ! That’s an impressive system and the room even more so. I can’t imagine how many hours you’ve put into your system and room, thank you for sharing. BTW I love your faux German sign, I’m Volga German and can appreciate the humor. Respectfully, Mike B. 

There is a swarm for sale on USAudioMart for a good price.https://www.usaudiomart.com/details/650338553-audiokinesis-swarm-subwoofer-system/?utm_source=USAudioMart+list&utm_medium=email&utm_content=email+featured+ad&utm_campaign=email-featured-ad-click&utm_term=650338553

I’ve seen posts about low level listening.

It is amazing how much lower of a volume / gain

to get dynamic sound with a sub in the mix. 

@gdaddy1, I've not got any comment on 6 db vs 3 db gain but one thing is clear for multi subs improving bass.  Multiple subs create multiple room node patterns.  The idea is to have "more" of them but in differing locations.  This will reduce the extremity of the summed nodes at any one location.  Less "sweet spot" and "suck out" locations.  Fidelity of each sub notwithstanding. There have been many threads based on DBA and this topic.  @deep_333 that looks awesome.  But since room nodes occur at even fractions of room dimensions (1, 1/2, 1/4) it might be optimal to have 2 of the 4 at odd ratios like 1/3 of the wall lengths.  But if one has a dedicated space and sitting location (most here do that), maybe this isnt a worthy consideration. That was my takeaway from my reading and understanding of the virtues of multi subs.  Personally haven't gotten past 2 subs, lol.