Laney LA65D - Manual (Page 11)

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ANTI-FEEDBACK: Narrow notch filter operating on frequencies between 25Hz to 500Hz. Use the push switch to turn
on. To eliminate "body resonance" feedback, switch the filter in with the push switch and adjust the control until the body
resonation reduces, you should find a sweet spot on the control where it disappears. Turning further out of the sweet spot
will bring the resonation back up again. This setting will be the optimum for that particular guitar but may need to be altered
if you plug in another guitar.
PHASE: Switches the phase of the signal from the amplifier. When you play any acoustic guitar the sound it produces is a
waveform, the same applies to an acoustic guitar plugged into an acoustic amplifier. It is not uncommon for these two
waveforms - which occur simultaneously be out of phase with each other. To a player who is sat close to an amplifier this
poses a small problem if the wave forms are out of phase as they are destructive to each other and cancel each other out.
This would cause the guitar to sound a little thin and lack-lustre. Engaging the phase switch switches the phase of the
amplified signal removing the problem of destructive interference. However sometimes the low frequencies being in phase
can cause acoustic feed back problems, to avoid this try operating the phase reversal switch. Most times this will cure the
problem. One thing to point out is that the audience does not hear any phase problems as by the time the sound wave
reaches them any phase differences have been cancelled out naturally.
PEAK LED: This LED illuminates when the preamp is over driven and approaches distortion, in this instance either push in
the PAD switch, decrease the instrument gain or cut the EQ levels, then increase the master volume.
CHORUS CONTROLS: Use the push switch to turn on the digital chorus, then with the rotary controls, the rate &
depth of the chorus sweep can be determined.
Removes the bottom end from the chorus and emphasises the top for a sparkly bright sound.
REVERB: Controls the level of the digital reverb applied to channel 2.
AUX IN: Fancy playing along to a backing track? Connect your CD/MP3 player here. Use the volume control on your
CD/MP3 player to set the volume level of the signal. The amplifier controls the instrument volume level.
POWER LED: hen ‘on’ Indicates that power is connected to the unit and it is ready to go.
VOLUME: Controls the overall volume level of the amplifier.
SHIMMER:
The led, w
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