Ashdown LB-30 DROPHEAD 15H - Handbuch (Seite 3)

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VU
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USER MANUAL
VALVE
CTM-300 CTM-100
FACILITIES AND CONTROLS ( NOTE THAT THESE vARy ACCORDINg TO THE mODEL )
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. On models with a single input this will be suitable for both Passive and Active basses.
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 Note that the signal level is at instrument level so this loop is suitable for effects pedals.
EQ CONTROLS
Use the mIDDLE, BASS and TREBLE controls to effect the overall tone of the sound.
mID SHIFT
Causes the mIDDLE control to operate at different points in the frequency spectrum dependant on the button being
either in or out.
BASS SHIFT
Causes the Bass control to operate at different points in the frequency spectrum dependant on the button being
either in or out.
BRIgHT
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).
mELLOW
Softens the overall tone slightly
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 volume of the amplifier.
mUTE
In the in position, this switch mutes the out put of the amplifier (useful for tuning, etc.).
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, ( not on
CTm15 ) please see the following page for more details.