GENERAL OVERVIEW
The SM7EQ pedal provides a range of the equalisation facilities as found in the GP12SM preamplifier in a convenient effects pedal
format. It is more than just a graphic equaliser designed specifically for bass as it includes 2 x PRE SHAPED equalisations that are
ideal for achieving instant and usable bass sounds. See BLOCK DIAGRAM below:-
The SM7EQ PEDAL can provide a wide range of EQ that is easily and instantly adjustable from a graphic equaliser specifically
designed to suit bass instruments, provide two pre shaped instant good bass sounds, provide any combination of the graphic and
pre shapes, provide a switchable volume boost, and can function in the effects loop or on the front end of any amplification system.
We at TRACE ELLIOT consider that one battery of 9 volts does not give sufficient headroom in the circuitry for the peaks in the signal
from your instrument especially with the massive boost and cut available in the equalisation section, so as not to compromise the
signal integrity the SM7EQ PEDAL uses two 9 volt batteries to give an internal power supply of 18 volts.
CONNECTIONS AND CONTROLS
Power to the unit is supplied from the two internal 9 volt batteries or from the D.C SUPPLY socket on the back of the unit (this
requires a regulated 18 volt mains adaptor available from TRACE ELLIOT as an optional extra).
Power to the unit is turned on when a jack plug is inserted into the OUTPUT socket.
Two LED’s indicate the ACTIVE status of the unit, these are PRE SHAPE and GRAPHIC to indicate when the effects are switched into
circuit.
If either of these LED’s should start to become dim then it is time to replace the batteries.
INPUT CONTROL
The INPUT GAIN control is to allow you to set the input sensitivity of the unit to your instrument, if this is not set to the optimum
level then you will not have full use of the equalisation range available.
With your instrument plugged into the SM7EQ input and its own level control turned up full, play a few loud notes. Gradually increase
the setting of the INPUT control, the INPUT LEVEL LED should start off showing GREEN as you play and eventually turn to RED as
the INPUT control is increased. The optimum setting for this control is when the LED shows GREEN for every note played with an
occasional flick into the RED on loud peaks.
It will be necessary to readjust this INPUT GAIN control after adjustment of the graphic equaliser to ensure that the signal is not
clipping.
INPUT
PRE SHAPE 1
7 BAND GRAPHIC
PRE SHAPE 2
SHAPE IN/OUT GRAPHIC IN/OUT
SHAPE
SELECT
INPUT
LEVEL
OUTPUT
OUTPUT
LEVEL
LEVEL
LED
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