Ver. 1.1 - ©Phædrus Audio Ltd. 2011 All rights reserved.
Controls
Instrument/ Loudspeaker switch –
LOUDSPEAKER MODE
As a general rule, guitar and bass guitar and certain electric pianos and organs rely on the
distortions in their amplifiers and loudspeaker-cabinets for the character of their sound. Ideally
of course, these instruments need to be captured with microphones, rather than applying a line-
level signal to the mixer. However, this is not always possible for a host of reasons including:
unacceptable "spill" from other sources; feedback problems; room resonance issues; cabinet
"buzz", inadequate microphone response and so on.
In this situation, it is useful to be able to DI, not the output from the instrument, but the signal
which drives the loudspeaker. This signal is not modified by the cabinet, but it does have - at least
- the character of the amplifier, its tonal modifications and distortion characteristics, imprinted
upon it. The Phædrus Audio PHI is able to provide this functionality. However, this loudspeaker
signal is of a very much larger amplitude
than this signal which leaves the instrument
- it has been
amplified
after all! It is
therefore necessary to attenuate this
signal before presenting to the DI circuitry
and this is exactly what is done when the
"LOUDSPEAKER/INSTRUMENT" switch is
moved to the "LOU DSPEAKER" position.
The attenuation is -32dB.
YOU MUST SELECT THE “LOU DSPEAKER” POSITION OF THE LOUDSPEAKER/INSTRU MENT
SWITCH WHEN CONNECTING THE Phædrus Audio PHI TO THE LOU DSPEAKER CIRCUIT OF