AURORA AUDIO INTERNATIONAL
1520 North Cahuenga Boulevard
Hollywood CA90028
Phone: 323 462 6136 Fax: 323 462 6137
Aurora Audio 8 Channel, 4 Band, Equalizer
Congratulations on purchasing the new, all discrete transistor
Class A circuitry, four band equalizer.
This unit is designed to normally work with the unbalanced
insertions on the rear of the GTP8, eight channel, microphone
preamplifier. This way, the equalizer uses the transformer
coupled, Class A, circuitry of the GTP8’s input and output
stages.
The equalizer is also available, at extra cost, with the
transformers and amplifiers included as a stand-alone unit.
The equalizers are nominally unity gain and the equalizer
section is engaged by pressing the red switch. The high pass
and low pass filters will only work with the EQ button selected.
The low and high frequency controls can be switched out by
putting their toggle switch in the center position. The two mid
frequency controls are switched out by rotating the knobs
fully clockwise.
The toggle switch on the high and low frequency sections of
the equalizer provide two degrees of boost and cut, a narrow
range on the left provides around 8dB cut and boost while a
coarse range provides around 18dB cut and boost. This enables
delicate adjustments of the controls.
The toggle switches on the two mid frequency sections of the
equalizer provide three degrees of Q adjustment… from a very
broad bell in the left position to a narrow one with the switch to
the right.
