Ashdown Engineering CTM-200-RACK Manual Del Usuario página 3

ASHDOWN ENGINEERING - CTM-200-RACK
FRONT PANEL FACILITIES
INPUTS - There are two instrument inputs marked LOW and HIGH. The LOW input
is highly sensitivity and also high impedance to suit the output from PASSIVE (Low
Output) basses - The HIGH input is low sensitivity and lower impedance to suit the
output from ACTIVE (High Output) basses. Plugging an active (High Output) bass
into the LOW input will overload the input, creating a fatter, warmer and more
distorted sound. Experiment by plugging your bass into either input to achieve the
desired sound.
EFFECTS SEND AND RETURN - These 1/4" jack sockets should be used to connect
to an external effects device or pedal board. The EFFECTS SEND output should
connect to the INPUT of the effects unit, and the output of the effects unit should be
connected to the EFFECTS RETURN input.
EQ CONTROLS - Use the MIDDLE, BASS and TREBLE controls to effect the overall
tone of the sound. The MID SHIFT switch causes the MIDDLE control to operate on
higher frequencies in the up position, and lower frequencies in the down position.
The BASS SHIFT switch causes the BASS control to operate on deeper frequencies
in the up position, and less deep frequencies in the down position. The BRIGHT
switch adds an overall brightness to the sound when in the up position. (Note: The
BRIGHT switch is not effective when the GAIN control is set to full).
GAIN - This controls the level of the signal sent to the MASTER section. To achieve a
cleaner sound, turn the GAIN control down and the MASTER up. To achieve a richer,
more distorted sound, turn the GAIN control up and the MASTER down.
MASTER - This controls the overall output of the amplifier.
MUTE - In the up position, this switch mutes the out put of the amplifier (useful for
tuning, etc.).
USER GUIDE
CTM-200-RACK
PRE/POST - This switch determines whether the signal from the DI OUTPUT (see
Rear Panel Facilities) is taken before/PRE the EQ section (down position) or after/
POST (up position).
VU METER - The VU meter provides a visual indication of the output level of the
amplifier. It also acts as a bias meter, please see the following page for more details.
REAR PANEL FACILITIES
DI OUTPUT - This 1/4" stereo jack socket is used to connect the amplifier to a low
impedance, balanced input on a PA system or recording mixer. The signal can be
taken PRE or POST EQ (see above), ie with or without the tone shaping added by
the EQ section of the amplifier.
LINE INPUT - This 1/4" jack socket is used to connect the output of line level devices
such as samplers and sound modules.
SPEAKER OUTPUTS - There are dedicated Speakon connectors for 2, 4 and 8! load
speaker cabinet configurations. It is important that the correct output or outputs are
used to match the impedance load of your cabinets. Please refer to the diagrams
later in this manual.
OFF/PREHEAT - Use this switch to pre-heat the valves, bringing them up to the
correct operating temperature before performing.
STANDBY/FULL - No signal is sent to the speakers when this switch is in the
STANDBY position. Switch to FULL when you are ready to perform.
USER GUIDE