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ARC-15 Electronic Block Diagram
MIC CHANNELS
MIC INPUT
balanced
(-50dBu, XLR)
48V PHANTOM
POWER
(2mm PLUG)
LINE CHANNELS
I
STEREO LINE
N
Balanced, +4 dBu,
stereo inputs
P
(RJ45)
U
T
CHANNEL 14
C
LOGIC
RS232 serial
H
connection to PC
(9 pin D-SUB)
A
N
PC PLAY / RECORD
USB connection
N
to WINDOWS PC
(USB connector)
E
NOTE #1
L
if this option is installed but not
being used, internal jumpers can
S
convert the input into a stan-
dard unbalanced, stereo, -10dBu,
line input channel (RCA phono)
CHANNEL 15
HYBRID LOGIC
On-off
(RJ45)
INPUT FROM
PHONE HYBRID
balanced, mono
(+4 dBu XLR)
Talk to
ON
PGM
AUD
TALK
Studio
Logic
Logic
Logic
PGM
Trim
F
A
SW
D
E
AUD
R
SW
TALK
SW
ON
PGM
AUD
CUE
Logic
Logic
Logic
F
PGM
Trim
L/R
A
SW
D
E
AUD
R
SW
CUE
SW
Stt/Stp
D
B
ON
PGM
AUD
CUE
9
Logic
Logic
Logic
F
PGM
C
A
O
SW
D
Play
D
E
E
AUD
R
C
SW
CUE
SW
Record
Stt/Stp
ON
PGM
AUD
CUE
Logic
Logic
Logic
Trim
F
PGM
A
SW
D
E
AUD
R
SW
CUE
NOTE #2
SW
if a phone hybrid is not used, this channel can be
used as a standard mono channel with a balanced
+4dBu source
VU meter
PL-PR-AL-AR-Q-TB
LEFT
Trim
VU meter
RIGHT
Trim
FET
Cue Sum
SW
Cue Logic ->
SW
Monitor
out
Selector
Air in
AIR
L
O
Pgm in
FET
PGM
G
SW
I
C
Aud in
AUD
PGM
Sum
Phone
Mix
AUD
Sum
FET
Talk to
TALK
Caller
SW
PL-PR-AL-AR-Q-TB
F
M
CONTROL ROOM
L
A
U
MONITOR OUTPUT
D
T
to powered speakers
E
E
R
(-10dBu RCA phono)
R
F
M
A
INTERNAL CUE SPEAKER
U
D
Pwr
T
in VU meter bridge
E
E
R
F
Pwr
HEADPHONE OUTPUT
A
D
L/R
for 8 ohm or Hi-Z headphones
E
(1/4" Headphone Jack)
Pwr
R
CUE INPUT
L/R
for Cueing a PC or Talkback
(-10dBu, 1/8" Headphone Jack)
L
AIR MONITOR INPUT
(-10 dBu RCA phono)
R
LOGIC OUTPUT (15 pin D-sub)
1)
Control Room Mute Logic
(for On Air light)
2-7)
Ch 2,3,4,5,13,15 On-off logic
8)
Talkback audio to Studio
9)
Talkback audio from Studio
D
(into Cue bus)
B
10)
Autocue logic (for TB)
1
11)
Ch 2 Cue logic for TB
5
12)
Studio Monitor L out
13)
Studio Monitor R out
14)
+12VDC
Trim
15)
Ground
L
PROGRAM OUTPUT- BALANCED
(+4 dBu XLR)
R
Trim
L
PROGRAM OUTPUT- UNBALANCED
(-10dBu RCA phono)
R
PROGRAM MONO MIX OUTPUT
L + R
(unbalanced, -10dBu, RCA phono)
AUDITION MONO MIX OUTPUT
L + R
(unbalanced, -10dBu, RCA phono)
L
AUDITION OUTPUT- UNBALANCED
(-10dBu RCA phono)
R
Trim
OUTPUT TO PHONE HYBRID
(balanced, +4 dBu XLR)
1.16
O
U
T
P
U
T
S
/
M
O
N
I
T
O
R
I
N
G
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