Manual-
GE 30
GRAPHIC EQUALIZER
OPERATORS MANUAL
GE 30 CONNECTION
When connecting the GE 30 to other components in your
system for the first time,
leave the power supply for last
. This will
give you a chance to make mistakes and correct them before any
damage is done.
INPUTS
on the GE 30 are balanced. They may be con-
nected for either balanced or unbalanced operation. This product
offers the choice between going in and out of it using either the
3-pin connectors or the handsome black #6 terminal strips with
the finely plated screws. We will describe here the use of the 3-
pin connectors. The terminal strips are connected in parallel and
are used in the same way. Only the names have been changed.
Pin 2 is hot “+”, pin 3 is return “–”, and pin 1 is chassis ground.
Balanced inputs require the use of pins 2 and 3. Pin 1 is unnec-
essary unless you are using it for shield ground. For unbalanced
operation, pins 1 and 3 must be shorted together to prevent 6 dB
of gain reduction. Drive pin 2 as hot and the combination of 1
and 3 as ground.
OUTPUTS
are balanced as well and follow the same con-
vention as the inputs. There are some tricky things to be careful
of at the output. If active balanced operation is your preference,
hot “+” and return “–” should be all that is required. It does
not take three wires to conduct a signal from one unit to the
next. Connect the shield to case or chassis ground. Transformer
balanced outputs are connected in the same manner. Active un-
balanced output requires “+” and ground only. Use pins 2 and 1
respectively. In this mode, do not short pins 1 and 3. If, however,
you are using the transformer coupled mode and are running
unbalanced,
do
short pins 1 and 3 or you will get little or no
output. In case you haven’t noticed, if you plan on throwing the
selector switch very often it’s a good idea to connect everything
in a balanced configuration.
QUICK START
If you are one of those people who think owner’s manuals are included with a product to help absorb shock and vibration during
shipment, you are a lot like we are. This section is for you. You want to fire up your equalizer without wading through a bunch of
stuff in manuals. Great. Read on. We’ll keep it short.
Set the input
LEVEL
control to about
6
. This is approximately unity gain in the
BOOST/CUT
mode. (In the
CUT-ONLY
mode the level control should be set to
2
for unity gain.) Your sound system should be set up such that gain or loss is not required in
the equalizer(s). Set the
EQ MODE
switch on the rear for the desired operating mode,
CUT-ONLY
or
BOOST/CUT
. The LEDs on
the front illuminate, telling you which mode you are in. Set the
OUTPUT MODE
switch on the rear for the desired output coupling
mode (
ACTIVE
or
TRANSFORMER COUPLED
). Adjust the
LOW CUT
and
HIGH CUT FILTER
controls on the front for
the desired low and high cut frequencies. Full counterclockwise on the
LOW CUT
control and full clockwise on the
HIGH CUT
control essentially defeats these functions.
If you read only this section, we assume you know how to set up an equalizer. So set the sliders where you want them and you’re
outta here.
Never connect anything except an RS 1 or other approved Rane AC power supply to the thing that looks like a telephone
jack on the rear of the GE 30.
This is an AC input and requires some special attention if you do not have an operational power
supply
EXACTLY
like the one that was originally packed with your unit. See the full explanation of the power supply requirements
elsewhere in this manual.
WEAR PARTS:
This product contains no wear parts.
