Ashdown Design & Marketing Electric Blue Amplifier manual Front Panel Facilities

Front Panel Facilities

MAG300

MAG600

Electric Blue

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.