Alpine SPX-Z18T - Manuel (Page 20)

18
10
0
–10
–20
–30
–40
–50
20Hz 30Hz 100Hz 1.0KHz 3.0KHz 10KHz 30KHz 300Hz
Type-2B: Tweeter and midrange positioning
are the same as in Type-2A, but the woofer
is located farther forward. This results in a
more extreme woofer listening angle of ap-
proximately 70
°, with a delay of 28cm rela-
tive to the mid. Subsequently, level attenua-
tion is applied to both the tweeter and mid
while also adjusting filter characteristics
appropriatly for the mid/woofer transition. In
this case, changing the midrange high-pass
to a low Q 3rd order and the woofer low-
pass to very high Q 2nd order results in an
acoustic crossover point of 500Hz.
Network Jumper Setting
HP-2 HP-1 LP-2 LP-1 +2dB
MID HP/LP
–3dB –1.5dB 0dB/0
°
+1.5dB/15
°
+4dB/30
°
HP-1
HP-2
HP-3
BYPASS
BYP
ASS
LP-1 LP-2 LP-3
LP-BYP
ASS
HP-BYP
ASS
TW LEVEL
WF LP MID HP/LP
WF/MID
SIGNAL LINK
SPX–Z18T
TW HP
MID/TW
SIGNAL LINK
+
—
+
—
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.
System Type 2