L I N E
I N P U T S 16-9
L I N E I N P U T S 8-1
O
U
T
P
U
T
S
111
R
I
G
H
T
L
E
F
T
2
5
1
3
4
RMS216 FOLCROM REAR PANEL FEATURES
1. Balanced analog 8-channel input (channels 1-8)
Standard DB25 connector
2. Balanced analog 8-channel input (channels 9-16)
Standard DB25 connector
3. Balanced stereo microphone-level outputs
(Left and Right)
Standard XLR-M connectors (Pin 2 Hot)
Connect these outputs to your favorite microphone preamplifier to
provide the Folcromʼs make-up gain. 36-42dB of gain is typical.
CAUTION:
Do not apply phantom power to the outputs of the Folcrom.
Because it has no capacitors, transformers, or active circuitry in its
signal path, the Folcrom will pass signal all the way down to and
including DC. It is therefore advised that you do not connect the
Folcrom to microphone preamplifiers which have 48V phantom
power active. While the Folcrom itself will not be harmed and indeed
will not even notice phantom power, it will pass this voltage straight
back out through its inputs where it is theoretically possible to
damage your DAC or other devices you may have connected.
4. 32-channel link switch
Two Folcroms can be connected together for a total of 32 inputs
feeding a single stereo pair of microphone-level outputs by using
two XLR “Y” cables (each cable should have two XLR-F connectors
feeding one XLR-M connector). When this is done, the internal
summing impedances of both Folcrii must be re-optimized for 32-
channel operation. This is accomplished by engaging a switch
accessible through a small hole in the rear panel. Leave the switch
disengaged (out) for 16-channel operation.
5. Chassis ground lift switch
In the rare event that the input and output cable shields need to be
isolated from the Folcrom chassis ground, simply engage the switch
accessible through this small hole. If the cable shields need to be
isolated from one another, it should be done in the cable assemblies.
Note: Units manufactured before May 2005 do not have these two holes. If your Folcrom has a serial
number below 216103, please contact Roll Music for link optimization and chassis ground-lift instructions.
+ = HOT
- = COLD
0
= SHIELD
INPUT CONNECTOR
CONNECTION DIAGRAM
8 | 7 | 6 | 5 | 4 | 3 | 2 | 1
1 6 | 1 5 | 1 4 | 1 3 | 1 2 | 1 1 | 1 0 | 0 9
“Hot” (+) input pins correspond to pin 2 of the output XLR connectors.
1
2
