Ashdown AA-100R User Manual - Page 7

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Ashdown AA-100R User Manual
AA-50R & AA-100R
PHASE SWITCH
The AA100R has a speaker PHASE switch located on the rear panel.
Switched to its IN PHASE position this facility has no effect on the sound
of the amplifier. However, when switched to OUT of PHASE it causes
phase cancellation to occur at various frequencies that give enhanced
clarity and extra projection to the sound. Phase cancellation also tends to
reduce further the chances of feedback occurring.
MASTER LEVEL
The MASTER LEVEL control sets the overall output level of the amplifier
and, providing the INPUT GAIN controls have been correctly set this
control should not have to be on a very high setting.
Having the MASTER LEVEL control on a high setting and the INPUT GAIN
on a low setting will only result in unnecessary noise being added to the
amplifier and will tend to degrade the signal purity. Please check that you
have adjusted the INPUT GAIN control to its optimum setting.
BACK PANEL FACILITIES
The AA100R has a speaker PHASE switch located on the rear panel.
Switched to its IN PHASE position this facility has no effect on the sound
of the amplifier. However, when switched to OUT of PHASE it causes
phase cancellation to occur at various frequencies that give enhanced
clarity and extra projection to the sound. Phase cancellation also tends to
reduce further the chances of feedback occurring.
USER GUIDE
AA-50R & AA-100R
REVERB FOOT SWITCH & MUTE
The REVERB F/S jack socket allows an external footswitch (not supplied)
to be plugged into the unit to turn the internal digital effects on and off.
The internal effects will be muted when the switch is shorted.
EFFECTS SEND and RETURN
The preamp provided with a serial effects loop and the sockets for this
are located on the rear panel. The EFFECTS SEND socket is for linking the
preamp sound into your effects unit and the EFFECTS RETURN socket for
returning the signal back to the preamp. As this is a SERIAL effects loop
then you will need to adjust the balance of direct to effect sound within
your external effects unit ( i.e. dry/wet mix ). The signal path through the
preamp is only broken when a jack plug is inserted into the EFFECTS RE-
TURN socket. The EFFECTS SEND signal may therefore be used as a pre
master volume LINE OUT socket or connected to a tuner. This will allow
silent tuning by turning the MASTER LEVEL CONTROL to zero, tuning up
and returning the MASTER LEVEL control back to its original setting. The
EFFECTS LOOP is located after the graphic and shape facilities and is in
parallel with the internal effects.
The circuit configuration for this effects loop has been changed from the
previous generation of amplifiers so that the overall gain of the amplifier
is not affected by the impedance of the external effects unit.
USER GUIDE