Alpine F#1 Status SPX-Z18T Mode D'emploi page 23

System Type 3
Network Jumper Setting
Type-3A: Both midrange and tweeter are at
the same distance and angle, while the
woofer position is closer and fairly off-axis
to the listening position. Therefore, the
acoustic center of the woofer is considered
to be the closest driver by approximately
18.5cm. In order to minimize overlap while
maintaining phase coherence between the
mid and woofer, a 3
nd
semi-2 order low-pass are applied, result-
ing in a summation point of 600Hz. Since
the tweeter and midrange are farther away,
minimal delay and some level adjustment
are desirable, utilizing a low Q semi-2
der high-pass on the tweeter and a 1
low-pass on the mid for a resultant acoustic
crossover point of 3.8KHz.
Notes:
• Highlighted tweeter level jumpers are the recommended settings for each configura-
tion, but user adjustment may be desirable.
• Transfer function simulations only illustrate the effect of the filter upon the input sig-
nal, and therefore do not represent the actual frequency response of the system.
• If separate channels of amplification are used (bi-wire or tri-wire mode), the appro-
priate signal link jumpers must be removed.
20
rd order high-pass and
nd
st
order
MID HP/LP
WF/MID
WF LP
SIGNAL LINK
+
—
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10
0
–10
–20
–30
–40
–50
20Hz 30Hz 100Hz 300Hz
or-
SPX–Z18T
MID/TW
SIGNAL LINK
MID HP/LP
+
—
1.0KHz 3.0KHz 10KHz
TW HP
HP-1
HP-2
HP-3
BYPASS
TW LEVEL
30KHz