The 5 inch
Sony drivers from the
Fisher model 8400 faceplates worked
better on their own then when in the faceplates
but had a hard barky sonic with piecing sharp spikes in their
sound range. Strips of tape on the cones cooled some of the spikes but
also dampened inherent broad spectrum sound ranges. The 5 inch
drivers were abandoned in favor of new tests using a 6
inch oval car stereo speaker of exceeding cheap
design which worked better than any costly
car stereo speaker in having such a
weak voice coil the 8 inch cheap
car speaker worked particularly
well in pumping resonances in re-enforcing
manner rather than creating sound waves by rigorous
force of control. A 12 inch woofer with rubbery cone, sitting
around for a decade, also turned out to have similar resonance pumping
ability. Once the two were hooked together in series and
the result heard, used of the 5 inch Sony drivers
was abandoned and into storage they went,
never to be used again.
Take it from me
that the Sony wafer thin
tweeter is standing upright in the
vice in the same position as in the previous
photo, the shadow contrasts are just too unfortunate
to make the tweeter clearly seen. In this photo
entrance to this room is behind to
the right. The ladder is in the
center of an L-shaped room.
View from the
other side looking up
the corridor outside the bedroom.
This print
came back from the
photo lab already highly contrasted
very white foreground objects (the wafer tweeter and vice)
very dark and almost black background (the wool six sided hat in multi
colors knit in mexico, leaned against the wall). Little could
be done to coax better image out of this print but
it shows the wafer thin tweeter as embodied
in the 'Fool A Guru' demo from another
angle. At one point the guru
checked out the closet
looking for any
there that
sounded.
During the
'Fool A Guru'
experiment only one
lead was live, connecting to the
wafer thin tweeter on the vice. In this next photo
the web fabric material of the wafer thin tweeter is clearly
seen. The empty plastic speaker shells are in storage in another room.
The fabric mesh is transparent.
In the original Sony Walkman circ.
1982 from which this wafer tweeter was
pilliaged the tweeter was tightly in place
impacting against built-in sound cavities inside
the Walkman to produce sound. The copper wire coil is
just being used as a support means for the bent stiff copper
wire which supports the faceplate upright in the open air, the copper
wire in the coil is not in the circuit at all, and never was.
ANOTHER VIEW OF THE
'FOOL A GURU' EXPERIMENT
The guru
in walking around
even checked the closet.
A temporary 'flow tube' is resting on
a board on boxes to the right. The center of the
tiny cone's magnet on the wafer thin tweeter is set in a
direct line through the center snowflake of each of the 'Stars'
made of snowflakes glued together with crazy glue in six-sided star
shape. In other words the success of this experiment included
alignment of the center point of the wafer thin tweeter
through the center points of the 'flow tube' the
'flow tube' being carefully placed with
excruciating care by moving the
board around discretely on
the stack of boxes as
well as focusing
each object
precisely.
A snowflake
has broken off the
lower rim of both of the starflakes,
later repaired with crazy glue. A handmade device
called 'The Ferris Wheel' and later featured in important sound
tests, is against the back wall, turned face on so its size starflakes
around a hexagon perimeter cannot be seen in naked clarity.
On the table
are what's left of the
cheap getto blaster's original
pair of plastic speaker boxes, the face
plates having been removed to hang suspended by
hooks make of bent stiff copper wire. Of the three sound
speakers in each faceplate the 5 inch driver and 2
inch tweeters are still hooked in (wired)
but the 1 inch tweeters with metal
cones have been disconnected.
Despite the leads seeming
to connect stereo pairs,
the leads are connected
to only one channel of
the getto blaster and are
wired in series as many as six
speakers linked during these tests in
'mono' hookup in series producing stereophonic sound.
It was one of these dangling faceplates (the right hand one)
that took off and sailed through the room on its own to the floor one
day when tests had suddenly opened up a symphony orchestra into
huge philharmonic sound. The sound lasted only a moment,
the orchestra built up momentum then hit a mighty
chord and the awesome power occurring right
at that moment ended the thing in an
instant as the heavy faceplate
suddenly departed the table
and sailed though the
air dragging a tangle
of speaker leads, the effect
never again to be gained, it was a
momentary by-chance success that demonstrated
such power and stereophonic mighties are possible in open
air resonation using mono sound sources. Once heard never forgotten.
Where the faceplate landed
by the foot of the ladder.
I took photos of it.
The fundamental problem
with this experiment was finding some
means to support the heavy woofer upright at just
the right angle to vibrate resonically in an exciting way. A
plumber's large hexagon washer was the only thing found that could
act as a support without snuffing sound on the other hand its
small size led to a very narrow fulcrum angle at which
the woofer could be supported off its magnet, so
small in fact, that the point exactly at which
the angle entered major conducivesness was
also that angle at which the woofer would
just topple over the moment it got hit
with impact vibrations. Hour upon
hour different means were tried
to gain support without snuffing
resonances and finally the super nova
went off in the rear corner of the brain,
it was impossible, something else at some other
time would have to be made to do the job, the experiment
ended with relief. This partictular kind of experiment was never resumed.
At various stages the plumber's hexagon washer itself was propped
in a donut made of fabric, it was set in a wooden button
box which didn't hold it, a vice was brought in as
an attempted extra support for the hexagon it
didn't work, other supports were tried
only the hexagon washer worked. It
was, to say the least, a vexing
situation because already
that mighty stupendous
chord of sound had
happened to launch the
faceplate soaring through
space but no means could be found
to get the whole thing stable enough to try
and see if the mighty philharmonic sound could be
re-engeered in the room, only glimpses of the philharmonic
came, and went, some goodstuff lasting for only moments at a time.
ANOTHER PHOTO OF THE FACEPLATE
LANDED ON THE FLOOR
In 'Virtual Stereo'
indistinguishable items
become distinguishable. The two
starflakes on horizontal stander right beside
the left hand faceplate cannot be discerned as a detailed
item in Mono, in Stereo it is clear that the item
is a flow tube made of two starflakes.
Hollow cores
from paper towel rolls and
toilet paper are always helpful as temporary
flow tubes when the sound quality is poor. When the sound is
improved during an experiment after a certain point the hollow paper
cores become destructive and are removed. To the far left is
the other dangling faceplate from the getto blaster
speaker boxes. It is mounted on a makeshift
stand similar to that in the foreground.
It was this other (the distant one)
that took off and sailed several
feet through the air onto the
floor in a gangup of mighty
symphonic resonance vibes
called philharmonic since
it was like hearing the symphony
orchestra live. You can see what kind of
physics was involved in having the philkarmonic (sic)
might overcome the inertia of the speaker support arrangement
causing the faceplate (which is heavier than the whole
rest of the plastic box), lift, then fly
like a yogi teleporting.
Streaks
near the TV and
across the floor are in the
photo, not the experiment. The floor is a
light beige carpet (the light brown mentioned already).
The beam of sunlight from the patio door shows the lighter color.
Amongst
orinments on a
glass topped coffee
table next to the red leather
chair (not seen), the orinments selected
for sonic availability in boosting the quality of sound
when placed in ultimately discrete positions as a
quickly made cluster, such a cluster able to
be assembled in any room in house, or
office to radically improve sound
from shitty sources, true, for
sure your cheap 1 speaker
clock radio. A bit of work
and a few rolled tubes of
cigarette package tinfoil
wrapped around a pencil
to create hollow flow tubes
and voila a poor TV sound can
suddenly be reverberating and booming
through the room and around corners up the corridor
in an institution environment for instance, true, it was tried
and totally mystified a self proclaimed superior accoustic engineer
without a degree who had worked for the National Research
Council world famous accoustic laboratories in Ottawa.
When the quickly make spontanteous sonic tuning
devices were suddenly swept away to see what
the effect would be on sound, the accustic
specialist (who had maniacally declared
that nothing could improve the stereo
sound of the nearby Sharp TV) put
down the daily newspaper he was
reading, and thereupon started
walking around oh boy was he ever
scratching his balding head in complete
bewilderment because the music channel's sound
he was enjoying so much had just vanished as if a solid
steel door had slammed shut, true, for several hours later the
talkative yakking specialist said not a single word. Not even one.
'What happened to the sound', was the only thing he said
when first the sound vanished. 'I swept everything
away at once to see what effect it would have',
said I, enjoying the moment immensely. It
had taken a couple of hours to get the
sound built up, and it had been
running un-tended through a
movie then music for two
more hours before
the wipe.
On the TV.
Too much
white and dark contrast
in the original to allow enhancement
to reveal background details against the livingroom wall.
That is the
nose of a Black and Decker
heat gun sticking out from beside the red
leather chair, used to remove labels from recycled computer disks.
Technique
used to hold the mobiles
together is seen in the cap at the top
made of restaurant plastic menu paper, stiff enough to
hold the mobile in shape with a piece both top and bottom. At this
point the only reason the mobile is still holding shape
is because of the hexagran cavity shape
of the turqoise bird feeder.
The birds stayed away
by the thousands
when it was
tried in
the back yard,
by the way, something
about the tourqoise color made
them deeply suspicious. A smaller red six
sided feeder in the backyard stayed busy year round.
RESULT
These didn't work.
Beginning after long distance sound tests
got wrapped up in the livingroom and the sound was nothing.
At first these mobiles, nested in pilliaged hexagon bird feeders
filled with stuff looking from the 21st century, produced
sounds of interest but could not be coaxed at all
beyond a certain minimal starting point
regards stereo and fidelity from
mono and stereo sources.
After a certain
see the miscellaneous photos collection
fuss point, the more fuss,
the worse the sound got. The devices
were dissolved and the bird feeder shells went
into storage in an upstairs room never to be used again.
Part of the reason forcing the bird feeder tests was that by
this time the art paper mobiles had soften and could no longer hold
their shape mounted upright by alligator clips on mike stands.
The bird feeder shells had the symmetry shape of the
mobiles and it was hoped that the softened
mobiles could be used anew to better
advantage but it was not to be,
a good seeming idea that
led nowhere. Accoustic
cavity six sided
shells are concidered
possible applications but the
thinking is that some form of sound generating
source has to be inside the cavity for any such cavity to work,
and even then, controls against problems of chaos with
loose lightweight objects at close quarters
in the sound stream so close to the
gnerator source may be too
much. All tests toward
to end of the experiments
(circ. fall 1995) showed that
any sonic tuning object had to be farther
away from any sound generators rather than up close.
THE CENTER FROM
WHICH ALL THINGS HAPPENED
Well, for a short time.
All of the templates for art
paper cutouts, large snowflakes,
diaphrams, pyramids, paper tripod,
stands, mobiles, were drawn with geometry
tools and handcut using professional graphic knives
using templates also drawn, sitting in this chair. A thin
pressboard (at the side of the chair) was used as the working surface
across the arms of the chair. That was all that was needed for the tasks.
SECOND PART FINISHED
see
see tympani resonator pictures
DONE
^~^~^~^~^~^~^~^~^~^~^~^~^
MAIN INDEX
~^~^~^~^~^~^~^~^~^~^~^~^~
Web site/display/designs/image enhancements - Greydon Moore
World's largest cosmic teaching site - Ottawa 2001/2004
form
A
&
O
3
3
Click google logo for site search
For the world's most comprehensive searches use
Fast crash course in astronomy
| DRUMBALLIA | ODDESSY | CLIFFR | CONTACT |