Soundstream Rubicon 1002 Owner's Manual And Installation Manual page 12

SONIC
HAWKINS
BASS
CONTROL
HAWKINS 1
BOOST
FREQ
110
XOVE R
SUBSONIC 9 13-30Hz
FIG. 1 BASS CONTROL
The frequency control (Hz) adjusts
the starting point of the subsonic fil-
ter. On the RUBICON and 1002, dB -5
the high pass filter has two frequency
ranges. When the bass control
switch is set to "SUB SONIC", the
high pass filter frequency can be ad-
of 30 Hz. In this setting, no boost "Q"
control is available. This control is
useful for setting the lowest frequency
that your subwoofer will see (see fig-
ure 1). When the bass control switch
is set to "HAWKINS BASS CON-
can be adjusted from 30 Hz to a maxi-
mum of 70 Hz. In this setting, there
is an available boost control of 0 to
-10
-15
-20
-25
-30
FIG. 4 VARIABLE BOOST
Use (502
and
Hawkins Bass Control (parametric) is a unique
subwoofer control circuit included with the
Soundstream RUBICON and 1002 amplifiers.
It is capable of removing subsonic energy in pro-
gram material while boosting subwoofer frequen-
cies. The circuit consists of two controls. One
adjusts the frequency of operation and the other
adjusts the range of boost. With both controls
adjusted fully counter-clockwise, no boost is ap-
plied and the amplifier is flat in response down to
20 Hz.
10
-10
-15
-20
-25
-30
-10
-15
-20
- 3 0 ,
The Boost control adjusts the amount
of level applied at the set frequency.
This is adjustable from flat (OdB) to +9
When the Boost is set to 0, Hawkins
acts as a sub-sonic filter only. (See
figure 3) The simple act of removing
potentially harmful low frequencies
can improve system output by as
much as 3 dB. (see figure 4)
12
FIG. 2 VARIABLE "Q"
FIG. 3 VARIABLE HIGH PASS