Lectrosonics TH3, Operating Instructions Manual

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7
Digital Telephone Hybrid
Rio Rancho, NM – USA
Example 3: TWO AM8 MIXERS
In this example, the TH3 is connected to a
pair of AM8 mixers. Both local and remote
signals are amplified. The single LecNet
cable passes signals both to and from the
AM8.
Note the interconnection of the mixers, with
the last mixer in the chain set as the master.
This technique may be used to add mixers to
any of the other examples.
PWR
IN
(CH40)
OUT IN
20 VAC
LecNet
(RS232)
EXPANSION
TELEPHONE CODEC
– +
OUTPUT
LEVEL
– +
IN OUT
AUX
REMOTE CONTROLS
AM8
Switch in SLAVE position
INPUT
Sound Reinforcement Amplifier
PWR
IN
(CH40)
OUT IN
MAIN OUT
+ –
CH8 IN
EXPANSION
REMOTE LEVEL
CONTROL
1 2 3 4
M
A
S
T
E
R
S
L
A
V
E
20 VAC
LECTROSONICS, INC.
LecNet
(RS232)
DIR
OUT
+ –
TH3
AM8
Switch in MASTER position
PWR
IN
(CH40)
OUT
IN
MAIN OUT
+ –
CH8 IN
EXPANSION
REMOTE LEVEL
CONTROL
1 2 3 4
M
A
S
T
E
R
S
L
A
V
E
20 VAC
LECTROSONICS, INC.
LecNet
(RS232)
DIR
OUT
+ –
PWR
IN
(CH40)
OUT
IN
20 VAC
LecNet
(RS232)
EXPANSION
TELEPHONE CODEC
– +
OUTPUT
LEVEL
– +
IN OUT
AUX
REMOTE CONTROLS
INPUT
Sound Reinforcement Amplifier
TH3
AUDIO EXPANSIO
PWR
IN
(PS60)
OUT IN
EXPANSION
M
A
S
T
E
R
S
L
A
V
E
16.5 VAC
LecNet
(RS232)
+
– – +
2 1
+
– – +
+
– – +
+
– – +
+
– – +
LINE
0dB GAIN (LINE) +30dB GAIN (ELECTRET) +50dB GAIN (DYNAMIC)
UTPUTS LINE OUTPUTS
4 3 6 5 8 7 10 9
+
– – +
6 5
GAIN
6 5
+
– – +
4 3
GAIN
4 3
+
– – +
2 1
GAIN
2 1
C
AUDIO EXPANSIO
MADE IN U.S.A.
1 10 9
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
PHANTOM POWER ON OFF
AM16
Example 4: AM16 MIXER
In this example, the TH3 is connected to an
AM16 mixer. Due to the flexibility of the
AM16, the same wiring configuration may be
used whether or not local sound reinforce-
ment is required. The single LecNet cable
passes signals both to and from the AM16.
In the AM16 software setup, Misc Settings
tab, be sure the Expansion In port is linked
to the NOM bus associated with the micro-
phones (usually NOM 1). This ensures that
the LecNet anti-echo feature will work
correctly.
AM16 NOM settings
The Matrix Setup tab must assign “Exp In”
to the amplified output, so the remote signals can be heard. The matrix may be further manipulated to route the
microphone signals to the amplifier, or not, as desired.
AM16 Matrix Settings