Operating instructions

16
System Type 1
Type-1B: In some cases it may be possible
or desirable to mount both drivers close to-
gether with on-axis positioning, but not quite
at same distance to the listening position.
In general, it is assumed that the tweeter is
the closer of the two, as would be the case
if it is mounted over the woofer. While there
will obviously be some tolerance associated
with different vehicles and installation meth-
ods, this difference is considered to be
approx. 12cm. Phase linkage is accom-
plished by inverting the tweeter and using a
slightly lower Q 3
rd
Order high-pass than in
Type-1A, combined with a low Q quasi-2
nd
Order low-pass on the woofer. This results
in an acoustic crossover point of 2.2kHz.
10
0
–10
–20
–30
–40
–50
2.0Hz 3.0Hz 100Hz 300Hz 1.0kHz 3.0kHz 10kHz 30kHz
HP-1
IN
OUT
IN
OUT
HP-2 HP-3 HP-4 HP-5
BYPASS
TW HP
LP-1
BYPASS
+
—
SIGNAL
LINK
SPX—Z15M
TW LEVEL
TW PHASE
+6dB/45° +4dB/30° +2dB/15°
0dB/0°
–2dB
–4dB
LP-2
WF LP
Network Jumper Setting
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.