Re: TDC vs. Triad, part II

[P3D Michael Kersenbrock <michaelk@xxxxxxxxxxxxxxxxxx>]

> The TDC fan is definitely stronger and keeps
> the projector cooler.  The TDC polarizers can be easily replaced and Reel

An old reel-3D writeup reprint also says the fan is stronger in the TDC,
but it also goes on to say that the Triad's the quiet most of the projectors.
Two ways of looking at it.  :-)

As I recall the TDC has a smaller air "exit" so perhaps the volume of air
is the same, but needs less velocity with the larger exit in the Triad ?

> My TDC 116 came with a slide carrier wide enough to project 7p slides.  I
> have modified a 716 carrier to project 7p slides.  Has anybody modified a
> Triad carrier to project 7p slides?  Is the little slide preview

Good point.  Something I've wanted and definitely a weakness in the Triad.  
One of the negatives for having a steel carriage!  But then (back to 
practicalities) how many people actually use 7P ?

> illuminated table of the Triad of use to anyone?  Does anyone know of

Yes.  I like and use it.  Not a biggie, but handy sometimes.

> any stereo club that uses a Triad for their meetings? (I know at least
> 3 clubs that use a TDC).

Without doubt, TDC's are the more popular unit.  It sold for $170 while
the Triad went for $230  "back then".  TDC's also came out first by 
quite a bit.  The Triad was the TDC's first competitor.

It's for club use where the NEED for a triad is strongest.  That's where
one gets a mix of different slide mount types (to cause jamming).  That's
also where one may be "forced" to focus "real-time" (the rear-mounted focus
control of the Triad is much more accessable to the projectionist, and
for that matter, the side mounted vert/horiz control is more accessable
as well).

The most significant advantage for the home user is that he/she who uses metal
masks for mounting can preview it projected still naked-in-the-mask when
thinking about whether to put glass on it.  With metal masks going away, this
may be less and less significant.   I still like it's kid-gloves approach
to slide handling though.  :-)

Not that I'd really mind replacing my Triad with a Brackett dissolver projector.... :-)

Mike K.


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