Honestly I am surprised that with all the subs people have these are required.
I find that even at very modest volume low notes vibrate the suspensions in my chairs and rumble the floor. I can't imagine needing more. I suppose this may be my TL designs, as pipes couple to the room in a unique way.
Anyhow these discussions about Butt Kickers always conjure up nostalgic memories for me.
For Christmas in 1957 when I was 10 years old I received this mono LP (pre-stereo) from my Godfather Peter Hambury.
I still have it, in fact it is playing on one of my turntables as I write this.
Anyhow I was sent it because of one of my preoccupations was sound reproduction. He sent it to me, because of the "Song of Reproduction." This song poked fun at the rapidly emerging interest in audio reproduction. I contains a reference to "Flutter on your Bottom!"
The disc is a live recording from their long running show "At the Drop of a Hat" at the old Drury Lane Fortune theater.
They had caught on the sound reproduction and especially DIY systems were becoming very popular. That is why turntables of that era were sold without PU arms or plinths. In fact plinths at that time were unknown as far as I remember. People mounted there own turntables and PU arms. DIY speakers were more prevalent than finished ones. The speakers companies pretty much always had plans on offer of their speakers and were only too glad to sell you their drivers. Both Gilbert Briggs of Wharfedale and Raymond Cooke of KEF published books on the subject. Many built their electronics form kits. I certainly did back then. Brenell even offered their reel to reel tape machines in kit form.
The decline of DIY I am certain has actually resulted in a decline in the hobby.
My Godfather Peter was a great guy. He became the CEO of the drug firm Allen and Hambury, now part of Glaxo. In those days he was the Far Eastern representative out of Singapore. I used to look forward to his visits. I remember him turning up in a pre war MG. My father asked him what the brakes were like. He replied: - "Dunno, never touch 'em!"
A year or two later the turned up in a new bright red Triumph TR 2 sports car. He took me out for a spin and we reached just over 100 mph on a straight stretch on the old Gravesend road. My mother was not amused.