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MAG300, MAG600 and Electric Blue
amplifiers share the same front panel
facilities.
INPUTS - There are two choices of
instrument input, these are marked PASSIVE
and ACTIVE. The PASSIVE input is high
sensitivity and high impedance to suit
PASSIVE bass instruments. The ACTIVE input
is much lower sensitivity and impedance to
accurately match the signal from ACTIVE bass
instruments i.e. those with a built in battery
powered pre-amp.
INPUT CONTROL - The INPUT control sets
the signal level through the preamp in
conjunction with the INPUT LEVEL VU Meter.
This is adjusted to give a reading of 0VU on
the meter for average playing dynamics with
occasional peaks into the red region. Please
note that the setting of this may have to be
re-adjusted after modification of the EQ
controls.
DEEP - With this button IN a fixed E.Q. is
superimposed on the pre-amp to give a BASS
boost to the sound. This gives +8dB at 50Hz.
BRIGHT - With this button IN a fixed E.Q. is
superimposed on the pre-amp to give a
TREBLE boost to the sound. This gives +10dB
at 10kHz.
E.Q. - This button switches the Equalisation
section IN or OUT i.e. the Bass, Middle and
Treble controls and the two rotary controls
placed between these.
Front Panel Facilities
MAG300
MAG600
Electric Blue