Ashdown ABM Betriebsanleitung - Seite 7

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E.Q. IN / OUT

This button switches the Equalisation section IN or OUT, i.e., the Bass, Middle and Treble controls and the

two sets of sliders (rotary controls on Electric Blue) placed between these.This facility is footswitchable on

the ABM range via a socket on the rear panel.

EQUALISATION

This consists of BASS, MIDDLE and TREBLE controls with two sliders (rotary controls on Electric Blue &

MAG) placed in between.This can be used in a number of ways:

• Firstly as a very simple Bass, Middle and Treble tone control section as found on older traditional

amplifiers.This is done by leaving the two sets of sliders (rotary controls on Electric Blue & MAG) set in

their centre positions and using only the BASS, MIDDLE and TREBLE controls to alter the overall tone.

• Secondly, if more control is required, then the sliders (rotary controls on Electric Blue & MAG) can also

be used to tailor the E.Q. in the regions between the main tone controls.

This provides a very versatile Equalisation section that is simple to understand and operate, yet provides a

wide degree of variation. It retains the simplicity of a three-control tone section but provides the flexibility

of a graphic equaliser.

SUB HARMONICS (ABM & MAG only)

This section consists of an IN / OUT switch and a LEVEL control.When switched IN, Sub Harmonics an

octave below the notes being played are produced.The level of these Sub Harmonics relative to the

straight bass sound can be adjusted using the LEVEL control.This is very effective in thickening the sound

and you will find in use that only a small degree of this lower octave is required to really fill out the sound

and provide a character to the sound that is not possible by any other means.The degree of Sub

Harmonics is also dependant on the setting of the BASS control.

DIRECT INJECT (D.I.)

A balanced D.I. is provided on the front panel XLR socket. ABMs and MAGs feature a push button placed

below the input that allows the user to choose either a Pre E.Q. / Pre Sub signal or a Post E.Q. Post Sub

and effects signal – EBs feature a Post E.Q. Post effects signal.The output signal from this XLR socket is set

to a level and impedance suitable for connecting directly into the Microphone input of a mixing desk for

either Direct Injection into the PA system or for recording.

PUSH TO MUTE (ABM only)

When pushed IN this button mutes the output from the preamp to the power amp, mutes the output from

the D.I. socket and mutes the output from the Sub Out socket as well.This leaves the output from the TUNER

/ LINE socket still available to allow muted tuning. A blue LED is provided next to this switch to indicate when

the amplifier is Muted.This operates only from the front panel MUTE switch and not from the external foot

switch MUTE facility, i.e., pressing this button mutes all sound from the amplifier and allows a tuner connected

to the TUNER / LINE socket to operate for silent tuning. Release the button and you are back in action again.

A red LED lights on the front panel when the amp is muted.

TUNER / LINE OUT

This output socket provides a line level signal that can be used either for a permanent connection to a

tuner or a line output to slave up to other power amplifiers. (ABM & MAG - Please note that if this socket

is used as a slave output to other power amplifiers that the MUTE button will not mute the signal to the

external power amplifiers.)

SUB OUT (ABM only)

This output socket provides a Low Pass filtered output for connection to the ASHDOWN 400 Watt

1 x 15" powered sub unit for additional extra low bottom end.This may also be used to drive other power

amplifiers to provide additional low bottom end to the system.The Low Pass filter is fixed at 160Hz.

N.B.The ASHDOWN 400 Watt powered sub unit can also be used with other systems as it has its own

active Low Pass Filter already built in.

OUTPUT LEVEL

The OUTPUT control adjusts the overall level of the amplifier. Adjust this for your preferred overall stage

playing volume.