The pressure pad problem was part of my idea about the external iso-loop. I envision a system that 
takes the cassette housing out of the equation as long as tape can fed out of it and back into it.

-- Tom Fine

----- Original Message ----- 
From: "Steve Greene" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, June 27, 2012 12:51 PM
Subject: Re: [ARSCLIST] Cassette Tape Playback issues (was Free - Cassette tapes)

I always liked the Nakamichi decks with the closed-loop dual capstans. One point of caution: closely 
examine the felt pressure pad that should fall directly over the tape and head.  In some cassettes, 
the glue may fail, causing the pad to wander off-center or fall out entirely.  In a case like that, 
put the tape in a new shell, because the misplacement or absence of the pressure pad will cause the 
tape to mistrack.

Steve Greene
Office of Presidential Libraries
National Archives and Records Administration
(301) 837-1772
>>> Lou Judson <[log in to unmask]> 6/27/2012 11:31 AM >>>
Tom, do you think that standard double capstan deks are not adequate for the job? I have Sony and 
Nakamichi decks that have closed loop dual capstan drives that seem to do a fairly good job, though 
I haven't had severely warped tapes that are problematic - so far!

Lou Judson
Intuitive Audio

On Jun 26, 2012, at 6:55 AM, Tom Fine wrote:

> An interesting machine would be a cassette mechanism up top but instead of a capstan drive, the 
> tape would be pulled out the middle of the shell and put in a little isolated-loop drive, Technics 
> style, with the heads inside the loop. I would think, if you had really good guidance on top of 
> the loop, you could keep the tape very stable in the loop. Better still would be a way to adjust 
> the two pinchrollers so you could vary the tension/wrap on the heads. Cassette tape is so thin, 
> that should be a way to guarantee good head contact.
> Probably not worth rigging up such a beast for lowly cassettes.
> -- Tom Fine