This is a direct quote from you on your post from 2/24/20: " There is space to the left, as I can move the tower that holds my CDs and the record albums. I wish I had Bluetooth capability for the subwoofers, as I could place one further to the right out of the line of foot traffic, and then I have space for one on the left. I could cover the cable with a small throw rug I suppose.
Bob, the Syzygy subs are exactly what you wished for; Bluetooth capable subs that are wireless and let you use an IOS or Android smart phone as a remote. You can place one to the left of your rack and the other anywhere in your room without running any wires. No throw rug to cover the cables is needed since there are no wires or cables connecting the subs except a power cord for each to the nearest a/c outlet..
They’re made in the U.S.and there are 2 versions which have either 10 or 12" drivers:
The Syzygy SLF850 utilize 10" drivers, have a rated bass extension down to 24 Hz and are priced at $799 +$60 shipping=$860 each on Amazon.
The Syxygy SLF870 utilize 12" drivers, have a rated deep bass extension down to 20 Hz and are priced at $999 +$50 shipping=$1,050 each on Amazon.
Here’s a link to both on Amazon: https://www.amazon.com/Syzygy-Acoustics-SLF-870-Subwoofer/dp/B01KBTWAL6?th=1
I f you’re serious about your wish for Bluetooth capable subs and attaining very good bass performance in your system, I suggest you begin with a pair of 12" SLF870 subs, which will provide very good bass at your designated listening seat down to 20 Hz.
Then in the future when you’re ready, you could add a third 10" SLF850 sub, which will provide even higher quality bass quality not only at your designated listening seat down to 20 Hz but throughout your entire room. Even though only 2 of the 3 subs are reproducing deep bass down to 20 Hz and 1 sub just to 24 Hz, the overall bass will sound like it extends to 20 Hz in the room.
This results because adding the third sub creates the necessary minimal number of subs in any given room to qualify as a distributed bass array (DBA) system. The 3-4 sub DBA system concept has been scientifically proven to modify the bass sound wave behavior in any given room in a specific manner that creates a bass sound wave environment that our brains process and perceive as the overall bass being fast, smooth, extended, powerful, dynamic, detailed, natural and seamlessly integrated with the main speakers.
I realize this all likely sounds a bit confusing to you. In general, the 2 sub solution works well at a single designated listening position while the 3-4 sub DBA concept solution works significantly better, as in about twice as well, throughout the entire room and like a charm. An Audio Kinesis Debra 4-sub DBA system has been providing near state of the art bass performance, for both music and HT in my room and system, for over 5 years now and I see no reason it wouldn’t do the same for music in your room and system with a custom 3-sub DBA system provided the subs are properly positioned and configured (configured meaning the volume, crossover frequency and phase controls are all properly set on each sub, which I can assist you with).
However, I think you need to decide whether you want to utilize and run line level cables to traditional self-amplified subs like the HSU or utilize the newer technology Bluetooth wireless subs like the Syzygy.
There’s also a third option available, which is to buy a Dayton SA1000 1K watt class AB sub amp/control unit for $300-400 from Parts Express (which the AK Swarm and Debra 4-sub DBA kit systems utilize) and use 2-4 less expensive good quality new or used passive subs connected via speaker wires. You’d also be able to progress with this amp from using 2 passive subs in your room to using 3 or even 4 subs. The main downside is running and concealing the speaker wires to them.
All 3 solutions will produce equally very good results with a pair of subs and will produce near state of the art bass results with 3-4 subs. I’m willing to assist you with any option you choose.
It seems like the wireless Syzygy subs may be a bit more expensive, mainly due to the shipping charges, but they’re also a lot more convenient, especially in your room. Are you willing and able to run speaker wire or line level rca cables to other areas of your room to save some dough? Or, do you prefer convenience? Let me know.