[Arny Krueger]

"Sonnova" wrote in message


Then I got a Garrard AT-7 "Automatic turntable" with the
big, heavy platter, but it rumbled.

My recollection is that the AT-7 was actually based on Garrard's lighter
weight chassis of the day. The heavier chassis was used for the Type A,
A-70, and Zero-100. The AT-7 was based on the AT-6 and mainly differed by
the addition of a 12" overlay on the AT-6 10" turntable.

All of the Garrards of the day rumbled. The main bearing was the cause, and
adding a heavier platter make the cheap bearing vibrate more.

Of course my Glaser Steers was a rumble box as well.

So did the Rk*O*Kut,
(it was idler driven too) so I changed it to belt drive
(Outboard motor, belt from a belt-driven Rek*O*Kut, had a
local machinist turn the motor spindle to the correct
diameter - I even knew enough to have the shaft "crowned"
so that the center of the shaft was the correct diameter
and the shaft tapered above and below the crown to keep
the belt form "walking").

Cute.

it was obvious to me in the late 1960s that analog
record/play technology had pretty well done all that it
was going to do. I figured that sometime in the early
70s that digital would become available. I was totally
amazed when it took until the early 80s for that to
happen.

Frankly, digital, as a consumer music medium never even
occurred to me until the mid seventies.

I worked for IBM in the late 60s and was familiar with digital technology
from computers, and data conversion from working with process control
computers - such as the IBM 1801.