13
Figure 4: Frequency Response of High-pass REAR Operation Mode:
Operation Mode: Lowpass REAR
KW 4V8
This mode of operation is used exclusively when the amplifier is assigned to subwoofer mode. The internal active
crossover allows only frequencies under the cut-off frequency of 24 dB slope
per octave to pass. A low decoupling
frequency of <100 Hz has the advantage that a subwoofer, which is usually installed in the trunk, no longer stands
out, but rather blends into the complete sound picture.
•
Set switch „LPF“ (
13
) to „x1“ (1 time) or „x10“ (10 times ) and, using the potentiometer, adjust the cut off
frequency
„LPF“ (
18
) to between 50 Hz – 500 Hz and/or 500 Hz – 5 kHz for the REAR channels.
Adjust level of subwoofer with controller „GAIN“ (
20
).
The phase position of the subwoofers should be checked against the basis system after start-up of the complete
system. The phase position is correct when the deep bass rendition is short and dry. Spongey and weak deep bass
rendition indicates phase errors. The phase position of the subwoofers can be changed by adjusting the
potentiometer „PHASE“ (
19
). Adjust settings on the „PHASE“-controller (
19
) until the bass rendition is optimal.
Caution:
The phase shifter functions only when the „MONO“ switch (
14
) is in the „ON“ position and affects
only the REAR channels.
TIP: Insert the included remote control for „GAIN“ and „PHASE“ in the „REMOTE“ (5) socket and,
from the driver’s seat, adjust „GAIN“ and „PHASE“ until the bass rendition is optimal. The remote
affects only the REAR channels.
Содержание KW 4V8
Страница 7: ...7 Front View and Controls KW 4V8 Figure 1 Controls...
Страница 18: ...18 Figure 7 Principal Cable Diagram...
