Note:
Specifications are subject to change without notice.
Specifications
10Hz - 250Hz
5Hz - 400Hz
180
Ω
20k
Ω
2 - 20Vrms
0.5 - 5Vrms
Spk Input
<5sec
40Vrms
RCA Input
<60sec
15Vrms
Output Impedance
<50
Ω
Max Output Voltage
>10Vrms
50Hz - 400Hz
5Hz - 40Hz
at 1V output
>99dBA
at 4V output
>110dBA
at 10V output
>118dBA
at 1V output
>110dBA
at 4V output
>120dBA
at 10V output
>128dBA
Remote
via REM IN
>10.5V
DC-offset
via Spk Input
>1.3V
via Spk Input
<100mV
via RCA input
<10mV
Turn-off Delay
up to 60sec
>500mA
Within 3% of B+
<300mA
<2.5mA
10.5V-18V
<8.5V
1.1”x3.5”x5.2”
29x90x133mm
Product Dimensions
Chassis (not incl. terminals)
Power Off
Max Draw (w/o REM OUT)
Sleep Current
Power On
Max Flat (+0/-1dB)
Extended (+0/-3dB)
Spk Input
RCA Input
Spk Input (max-min gain)
RCA Input (max-min gain)
Current Draw
Operating Voltage (B+)
Audio Signal
Turn-On Trigger
RCA Input
Spk Input
S/N (signal-to-noise)
Remote Output
at 1% THD+N
Frequency (F
3
)
Slope
Current Capacity
Voltage
Input Impedance
Input Sensitivity
Max Input Voltage (peak)
Low-Pass Filter
Frequency response
1.5 to 5
30Hz - 80Hz
Width (Q)
Frequency (F
c
)
Parametric EQ
Boost
0dB to +12dB
-24dB/Oct.
Frequency (F
3
)
Slope
Subsonic Filter
-24dB/Oct.
Spk Input at 10V output
RCA Input at 10V output
THD+N
<0.1%
<0.1%
5
’
Crossover: This section is for selecting the cut-off frequencies for the low-pass filter (LPF) and
subsonic filter (a.k.a. infrasonic or high-pass).
“
Subsonic: Provides adjustment of the lower cut-off point, below which all frequencies are filtered
out at -24dB/Oct. Very low freqencies can waste amplifier power and damage subwoofers. This
adjustment is especially important for ported enclosures to prevent over-excursion below the
tuning frequency.
”
LPF: This low-pass filter adjustment sets the upper cut-off point, above which all freqencies are
filtered out at -24dB/Oct. Unwanted high frequencies allowed to come through subwoofers can
cause boomy, buzzy bass that is easy to localize. With a steep -24dB per octave slope, the cut-off
frequency can be set higher, allowing more punch with less distortion and optimum integration
with main full-range speakers for up-front bass.
Notes:
The subsonic and low-pass filter stages are at the end of the internal circuit signal chain so that any
overlapping frequencies from the parametric EQ will still be filtered at the set crossover points.
Setting the subsonic and low-pass filter cut-off points too close together will allow only a very narrow
frequency range to pass and will result in reduced output.
