East BTBM-01 Manual

The BTBM-01 is divided into two separate sections:
* Dual concentric Bass/Treble stack with Bright function.
* Two Input Mixer stage which allows electronic mixing of two individual signals, such as
those from a piezo preamp andmagnetic pickups circuit.
BASS & TREBLE Stack
!
TREBLE (+12dB @ 3 kHz, -12dB @ 1kHz)
!
The upper knob is the Treble control with boost and cut. The central 'flat' position is indented. The cut
settings work on lower frequencies compared to boost to give a deeper sound when the top is rolled off.
BRIGHT (+8dB @ 7kHz)
!
Pull the Treble knob for the Bright setting.
BASS (+15dB @ 50Hz)
!
The lower outer knob is the boost only Bass control. The frequency band of boost gets progressively
lower as the boost is increased. An indent midway is included to aid the setting of this control.
TWO INPUT MIXER STAGE
!
Consists of a low noise unity gain mixer stage with a low impedance output.
POWER
!
This unit can powered from 9 - 18 Volts DC.
Hot Cold
INPUT TO EQ
'Cold'
NOTE: All pins are linked to each other, and the
is made from the 'EQ OUTPUT'
necessary to connect the
Hot
EQ OUTPUT
to a 'MIXER INPUT'
'Cold' pins in this instance.
BTBM-01
LINKED
ON
PCB
Cold Hot Cold Hot Cold
MIXER INPUTS
'0 Volts/GROUND'
, for example, connect just the
+9-18 Volts
O Volts/GROUND
MIXER
Cold
OUTPUT
Hot
pins. Therefore if a connection
'Hot' pins. It is not