Alpine SPX-Z18T - Manuel (Page 17)

15
English
10
0
–10
–20
–30
–40
–50
20Hz 30Hz 100Hz 1.0KHz 3.0KHz 10KHz 30KHz 300Hz
Type-1B: While the mounting configuration
is the same as Type-1A, this network set-
ting provides a variation for when personal
taste, positioning or vehicle acoustics neces-
sitates more high frequency output from the
midrange and tweeter. Rear deck installa-
tion is one particular example where the
extreme off-axis positioning will require such
level compensation due to the natural roll-
off. Although this will also result in some
additional delay of the woofer, it does not
exert significant influence in this case. The
resultant acoustic crossover points are the
same as indicated above.
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.