REAR PANEL DESCRIPTION
1. 3-pin INPUT Connector.
Pin 2 is positive, pin 3 is negative and pin 1 is signal
ground. For unbalanced operation, use pin 2 as hot and pin 1 as return. Do not use
more than one of the INPUT connectors on the FME 15.
2. INPUT Expand Connector.
This ¼" TRS connector parallels the 3-pin connector
described in item #1. Tip is positive, Ring is negative and Sleeve is signal ground.
3. Terminal Strip INPUT and OUTPUT.
The
“+”
,
“–”
, and
COMMON GND
terminals of the #6 terminal strip parallel the respective pins in the 3-pin and ¼"
connectors. Used for primary Inputs and Outputs or additional patch connections.
Use only one INPUT connector: they do not sum. You may use more than one
OUTPUT connector to split to other devices.
4. OUTPUT Connector.
This ¼" TRS connector parallels the 3-pin connector
exposed in item #5 below. As before, Tip is hot, Ring is not and Sleeve is signal
ground.
5. 3-pin OUTPUT Connector.
Pin 2 is positive, pin 3 is negative and pin 1 is signal
ground. For unbalanced operation,
do not short any pins to any others
. Active
balanced Outputs operated in the unbalanced mode use only pin 2 driving the line
and pin 1 acting as the return. Pin 3 should be left disconnected. Grounding pin 3
will not cause any damage nor will it impair the sound. It only creates extra work
for your audio electrons and is unnecessary. You may use more than one type of
OUTPUT connector simultaneously to drive multiple devices.
6. PATCH I/O Connector.
This ¼" TRS jack provides an unbalanced
I
(Input) on
its tip and an unbalanced
O
(Output) on its ring. Designed for use with tip=send/
ring=return effect loop inserts found on many mixing consoles. This provides an
easy means for patching the FME 15 into effect loops as painlessly as possible,
using a single ¼" TRS stereo patch cable. CAUTION: USE
EITHER
THE PATCH
I/O
OR
ANY OF THE INPUT AND OUTPUT CONNECTORS—
DO NOT USE
BOTH AT THE SAME TIME.
THESE ARE NOT SUMMING INPUTS. ONLY
ONE AT A TIME MAY BE USED.
7. GROUND LIFT Switch.
This switch provides the ability to separate chassis
ground and signal ground. Normally, this switch should be in the LIFT position. In
some circumstances, moving it to the opposite position eliminates stubborn hum
and buzz problems. We realize a scientific explanation would be helpful, unfortu-
nately science doesn’t have enough to do with it. If you are tempted to try moving
this switch with your power amplifiers turned on and up,
don't be. always turn
your amplifier levels down before changing your grounds around
and then bring
them up slowly. Put a speaker re-coner out of work today!
8. Chassis Ground Point.
A 6-32 screw is used for chassis grounding purposes. See
the
CHASSIS GROUNDING
note on the last page for details.
9. Remote Power Supply Input.
The unit is supplied from the factory with a Model
RS 1 Remote Power Supply suitable for connection to this input jack. The power
requirements of the unit call for an 18-24 volt AC center-tapped transformer only.
IT IS NOT A TELEPHONE JACK. NEVER USE A POWER SUPPLY WITH
YOUR UNIT OTHER THAN THE ONE SUPPLIED OR A REPLACEMENT
APPROVED BY RANE CORPORATION. Using any other type of supply may
damage the unit and void the warranty. Two years parts and labor is worth
safeguarding, don’t you think?
