Infinity Crescendo Series User Manual

CONNECTION
USING
A
STEREO
AMPLIFIER
Always
turn
off
the
power
of
your
entire
system
before
making
connections
to
your
speakers.
Connect each speaker to your amplifiers output
terminals using the heaviest gauge wire you can
obtain. The choice of speaker connecting wire
is extremely important, especially when using
speakers
as
sonically
revealing
as
the
Infinity
.
Crescendo Series. If inferior wire is used, sonic
quality will suffer and the degradation of sound
will be readily audible. For best results, do not use
wire that is thinner than 16 gauge. NOTE: The
lower the gauge number (16, 14, 12, etc.), the
heavier the wire. *
Although gauge alone does not reveal the
ultimate sonic quality of wire, it represents a good
starting point especially if you are not using a
name brand speaker connecting cable. Consult
your dealer if you are not certain which type of
wire will make your Infinity speaker sound best.
When using regular lamp cord, look for ridges
or different colored insulation to differentiate
polarity. If there is a ridge on the outer insulation,
use the ridge for positive (+) and the wire without
the ridge for negative (-). If the insulation wrapped
around one wire is red, use it for positive. Use
white (or whatever the other color may be) for
negative. See Figure 1.
ROUGH OR COLORED
INSULATION, ONE LEAD
DIFFERENT COLOR
CONDUCTORS
RIDGE, STRIPE, OR
PRINTING, ONE LEAD
FIGURE 1 - Some examples of polarity coding on speaker cables
CONNECTION FOR BI-AMP OPERATION
Your Infinity Crescendo Series speakers permit
you to employ two power amplifiers in a bi-amp
configuration. One amplifier feeds the woofer
(the signal passes through the speaker's crossover
network to feed the woofer) and the other
amplifier drives the remainder of the speaker
system, This arrangement generally results in
the purest and most open sound obtainable from
the speaker.
Ic is important to connect your speaker in phase
(which means that all individual drivers are moving
in
and
out
in
the
same
direction
and
at
the
same
time) in order to obtain the best localization of
instruments and voice as well as the deepest, most
natural
bass.
If
a
speaker
is
out
of
phase,
the
drivers
in one channel will move in while the other
channel
will
move
out.
This
condition
invariably
results in sonic problems and must be avoided.
Using one length of speaker connecting wire,
connect the RIGHT speaker to your amplifier’s
(or
receiver's)
RIGHT
channel
output
terminals.
Be
sure
that
strands
of
the
wire
do
not
touch
the
ground
terminal
(and
be
sure
to
observe
polarity).
Even
a
thin
stray
wire
can
cause
distortion
in
the
system which would be very difficult to trace.
Speaker Positive should be connected to amplifier
Positive and speaker Negative to amplifier
Negative. Connect the LEFT speaker to your
amplifier’s LEFT channel output terminals in
a similar manner. See Figure 2.
LEFT SPEAKER
_l_ SHORTING STRAPS
(FROM FACTORY)
AMPLIFIER
FIGURE 2 — Speaker connection
To connect your speaker to two amplifiers,
merely remove the two gold-plated straps (which
connect the bass and higher frequency section of
the crossover network together for use with a single
power amplifier) and connect one amplifier to
the bass terminal and the other amplifier to the
tweeter/midrange terminals. Observe polarity
as detailed in the previous section. See Figure 3.

Infinity Crescendo Series Specifications

General

Nominal Impedance	6 Ohms
Sensitivity	90dB
Crossover Frequency	3kHz
Midrange	4"
Tweeter	1"