Loading ...
Loading ...
Loading ...
JD250/1 • JD500/1 • JD1000/1 9
“BASS BOOST” CONTROL
JD monoblock amplifiers feature a single band,
boost-only bass equalizer controlled by a rotary
knob marked “Bass Boost (dB)”. This control has
a boost range of 0 dB (full-counterclockwise) to
+12 dB (full-clockwise) and is centered at 45 Hz.
REMOTE LEVEL CONTROL OPTIONAL
With the addition of the optional Remote
Level Control (RBC-1), you can control the
subwoofer volume from the front of the vehicle.
The RBC-1 connects to the jack labeled
“Remote Level Control (RBC-1)” on the
Connection Panel of the amplifier using a
standard telephone cable (supplied with the
RBC-1). If desired, multiple JD monoblock
amplifiers can be controlled from a single RBC-1
controller using a single-line, four-wire phone
line splitter and multiple phone cables.
When connected to the amplifier, the RBC-1
operates as follows: At full counter-clockwise
rotation, the audio will mute completely. At full
clockwise rotation the level will be the same as
if the RBC-1 was not connected at all. In other
words, it operates strictly as a level attenuator.
PREOUTS
JD monoblock amplifiers include a buffered,
pass-through preamp output section, so that
additional amplifiers can be easily added to the
system. The preamp output delivers the same
signal that is connected to the amplifier’s inputs.
Note: The preamp output signal is not affected by
the amplifier’s filter controls. If the input signal is
full-range, the preamp output will be full-range.
Note: When the “Input Voltage” switch is in its
“Low” position, the level of the “Preouts” signals
matches the input signal levels (unity gain).
When the “Input Level” switch is in the “High”
position, the level of the input signal is attenuated
–12 dB to produce a line level signal at the
“Preouts”. This ensures a proper line level signal
output under both conditions.
If you plan to use the “Preouts” to feed a stereo
amplifier, you must connect a stereo signal to
the inputs of the amplifier. A mono signal into
the amplifier will result in a mono signal out of
the preamp output.
Loading ...
Loading ...
Loading ...