10. Finally, put the knobs back on and tighten the set screws.
11. Enjoy the applause and
go
buy your Fearless Assistant a beer, Pepsi, Yoohoo or
diet Ginseng soda.
D.
ESP-3
AUDIO
WIRING
Center
Channel Speaker Considerations.
Key
to the ESP-3's Image Amplification
process is an additional center channel speaker. Your choice
of
speaker should be a
function
of
the following considerations (does that sound official or what?). It should be:
•In
the center. This may sound like we're stating the obvious, but the center channel
MUST
be
placed in between the left and right front speakers.
It
"anchors" the stereo image
and
if
you skew center channel
to
either side, the whole gigantic Spatially Restored, Image
Amplified sound will be out
of
whack.
• As large as possible. Center channel information is definitely FULL range. So,
within reason, you should use a full-range center speaker. The absolute smallest would
be
a
4 incher (some claim
to
go
down
to
90 Hz but
we
don't believe it). 5-inch
or
6x9 coaxial is
far
better. We've made things easier by including a PFM filter which acts as a low-cut
filter, but the speaker should be capable
of
strong output right down
to
the cut-off fre-
quency.
We
said "largest within reason" because another factor enters in.
..
• Placed as up front as possible. Because the center channel is full range it contains
treble which doesn't fare too well
if
its playing at the listeners' knees. Obviously larger
speakers are harder
to
mount high
up
in the center.
• Finally, the speaker should have the same sonic signature as the left and right
speakers.
In
other words, its frequency response should resemble that
of
the main speakers.
If
you have carbon fiber tri-axials with titanium tweeters on the sides,
don't
use a cheap,.
mushy cardboard cone "full range" in the center -it won't have the same mid and high
response.
If
you have separate mid/woofers and tweeters on the sides, consider
*e
same for
the center
if
there's room.
Amplifier Considerations. The ESP-3 creates the need for an extra amplifier charmel.
If
you had two before you'll need three.
If
you're running the ESP-3 with a really compli-
cated multi-amp system, we'll leave you
to
your own mad-scientist plans. But
if
the ESP-3
is part
of
a smaller system (one with just front left, front right and subwoofer,
for
example)
you might consider taking advantage
of
a 4-channel amp.
If
the
.lfVOOfe
r isn't too big, you
can run left, right, center and subwoofer offone channel each. The other option is
of
course
to
devote a whole amp
to
the center channel.
If
this
is
the case, just size it so it is driven by
about the same power as the left and right front channels. For example,
if
the left and right
speakers are being driven by 50 watts, select a 50 watt amp.
Or
use a 25-watt amp and
bridge it.
The
ESP-3's
THRU
Connections. Along with the regular INPUT's and OUTPUT's,
there are left and right THRU sockets. These are really
two
more OUTPUT's except that
the ESP-3's circuitry doesn't affect their sound. This is so you can drive other sets
of
speakers where you
don't
want the spatial restoration effect without resorting
to
"Y"
cords.
Center
Channel Outputs. They're both the same output and are mono, so
don't
entertain ideas about trying
to
get a stereo center channel or anything like that. We
provided two to give you additional flexibility in sophisticated, multi-channel installations
like the example below.
Planning
Your
Hook-up Strategy. Okay, time
to
trot out the flow charts and
diagrams. Naturally, there are lotsa ways
to
hook up the ESP-3, depending on what the rest
of
your system is like and whether you choose
to
use the THRU connections.
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