[Peter Wieck[_2_]]

On Tuesday, May 14, 2019 at 5:46:10 AM UTC-4, Howard Stone wrote:
Thanks for all these interesting , stimulating.

The «Â*really annoyingÂ*» thing is just that the speakers cant be hidden away in corners or low down or flat against a wall in some unintrusive position without effecting the sound negatively,

Ive just had a brief opportunity to think about the AR ideas, but placing the speaker one woofer diameter from the floor leaves them pretty low. Wont there be a lot of boom from the floor?

Howard:

The initial placement is the minimum point of departure, not the final resting place. And, it is a function of woofer size, room size & shape and a number of other factors such that the final result is unlikely to be the first-look.

Example: I keep a pair of AR3a speakers in the "wife friendly" system. They are in a room with plaster walls, hardwood floors, two French doors and a bow window, that is 17 x 14 x 10. They wound up 6.5 feet apart, 18" above the floor, ~7' from one wall and ~4 feet from the the opposite wall. Horizontal distances are ~Center-Line, vertical are to the base of the speaker. I used Kiri Te Kanawa Exultate Jubilate for the horizontal placement, and Jeremiah Clarke Trumpet Voluntary (Kettle Drums) for the vertical placement. They are being driven by a fully rebuilt vintage AR receiver making a measured 80 watts into the 4-ohm load.

Note also that room furnishings make a difference. There is a Turkish carpet in this room and Afghans in the other. But they are not under the speakers and therefore have no immediate effect. They do serve to dampen the room overall, but that is a good thing given all the hard finishes.

Peter Wieck
Melrose Park, PA