Alpine F1 Status Mode D'emploi page 19

Network Jumper Setting
Type-1C: Even if close proximity of the two
drivers can be achieved, it may not be possi-
ble to build out the mounting angles for on-
axis or equidistant positioning relative to the
listening position. In this particular case, both
drivers are considered to be mounted basically
flat to the panel, with the tweeter located over
the woofer. This situation results in a relative
delay of the woofer by approx. 10cm. For phase
linkage in the crossover region, it is then de-
sirable to minimize the phase shift on the
woofer, and then match that to a somewhat
moderate phase shift on the tweeter. This is
achieved by applying a very shallow semi-1
order low pass on the woofer, and a relatively
rd
low Q 3 Order high-pass with inverted con-
nection on the tweeter. The resultant acoustic
crossover point between the two drivers is
2.15kHz.
Notes:
• Highlighted tweeter level jumpers are the recommended settings for each configura-
tion, but some 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 mode), the appropriate signal
link jumpers must be removed.
10
0
–10
–20
–30
–40
–50
2.0Hz 3.0Hz
st
TW HP
WF LP
SPX—Z15M
SIGNAL
LINK
+
—
100Hz 300Hz 1.0kHz 3.0kHz
TW PHASE
TW LEVEL
10kHz 30kHz
17