Table of Contents
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Table 4 below lists the function/descritption of each connector
or control on the rear panel on the mixer/power amplifier.
Table 4. Rear-Panel Control and Connectors for the 1707C
N
a
m
e
B
a l
n
k
C
v o
r e
P
a
n
l e
C
o
e v
s r
c
o
n i
e t
n r
a
v l
l o
L
N I
K
O
U
T
C
o
n
n
e
t c
r o
C
o
m
b
n i
e
s
s y
e t
m
o
n
y t
p
e
p
h
o
n
L
N I
K
N I
C
o
n
n
e
t c
r o
r P
v o
d i
e
s
a
y t
p
e
p
h
o
n
P
R
E
A
M
P
O
U
T
U
s
e
o t
p
a
C
o
n
n
e
t c
r o
a
n
d
p
o
w
r e
t s
a r
p
p
e
d
p
e r
c
e
d
e
s
a
n
R
C
- A
A
M
P
N I
C
o
n
n
e
t c
r o
r P
v o
d i
e
s
a
y t
p
e
p
h
o
n
A
U
X
O
U
T
C
o
n
n
e
t c
r o
a
p
p
e
r a
n i
g
p
h
o
n
o
c
o
n
S
e
e v
n
L -
u
g
S
c
e r
w
P
r e
m
s t i
c
o
T
r e
m
n i
l a
C
o
n
n
e
t c
r o
s
s y
e t
m
s '
O
U
T
P
U
T
L
E
V
E
L
C
o
n
r t
l o
n I
y b
r
t o
t a
n i
g
c
o l
k c
w
s i
. e
c
o
u
n
e t
c r
o l
S
e
e v
n
T -
r e
m
n i
l a
P
r e
m
s t i
c
o
B
a
i r r
r e
S
r t
p i
C
o
n
n
e
t c
r o
1 (
7
0
7
C
1 /
7
1
5
C
0
l n
) y
U
S
h
o
t r
n i
g
S
r t
p i
C
o
n
n
e
c
s t
t
a r
n
f s
r o
m
o
u
p t
u
. s t
O
U
T
P
U
T
F
U
S
E
P
o r
e t
c
s t
o l
R
e
p
a l
c
e
o
B
t a
e t
y r
n I
p
t u
U
s
e
o t
p
o
C
o
n
n
e
t c
r o
o
p
r e
t a
o i
n
D
C
b
t a
e t
y r
1
7
0
7
C
a
n
A
C
F
U
S
E
P
o r
e t
c
s t
a
l a
e t
n r
t a
n i
g
y t
p
e
a
n
d
G
N
D
T
h
e
g
o r
u
n
e
q
u
p i
m
e
t n
2. Once the gain is set for each input module channel, rotate
the front-panel input-level channel controls (CH 1-6) on
the mixer/ power amplifier to their 12:00 o'clock (MID)
position. Slowly increase the MASTER output level control
on the front of the mainframe until you hear a normal
operating level through the loudspeaker system. Then
readjust the input-level channel controls slightly for the
desired mix or blend of signals.
3. Adjust the high-cut (HF) and low-cut (LF) filters on the
input module as needed for the desired response. The
widest possible bandwidth occurs when you rotate both
of these controls to the FLAT position. This is the best
setting for music. However, in speech-only channels, you
should limit the bandwidth to help reduce noise and
system feedback.
4. To use the mixer/power amplifier's output tone-control
section, move the two-position EQ IN/DEFEAT slide
switch to the EQ IN position. Then adjust the BASS and
F
u
n
t c
o i
n
D /
e
s
c
i r
t p
o i
n
n
n
e
t c
r o
m
o
u
t n
n i
g
h
o
e l
. s
P
o r
e t
c
s t
a t
g
e
s
w
h
e
n
n
t o
u
s
n i
g
p
o
t r
a
n
d
c
w t
o
u
n
s t i
o t
g
e
h t
r e
y b
c
o
n
n
e
t c
n i
g
e
o t
L
N I
K
N I
f o
s
s y
e t
m
w t
. o
T
h
s i
o
c
o
n
n
e
c
o t
. r
i d
e r
t c
n i
p
t u
o t
h t
e
a
m
p
f i l
e i
. r
T
h
s i
o
c
o
n
n
e
c
o t
( r
e r
. f
1
k
H
, z
1
0
0
m
r v
m
c t
h
a
u
i x
a i l
y r
e
q
u
p i
m
e
t n
b
e
w t
e
e
n
a
m
p
f i l
e i
. r
P
R
E
A
M
P
O
U
T
s i
n
r o
m
o t
A
M
P
I
. N
T
h
e
P
R
E
A
M
P
O
U
T
c
o
h t
e
f
o r
t n
p -
a
n
l e
M
A
S
T
E
R
e l
e v
c l
o
y t
p
e
p
h
o
n
o
c
o
n
n
e
c
o t
. r
i d
e r
t c
n i
p
t u
o t
h t
e
a
m
p
f i l
e i
. r
T
h
s i
o
c
o
n
n
e
c
o t
( r
e r
. f
1
k
H
, z
7 .
7
5
m
r v
m
r P
v o
d i
e
s
a
n
a
u
i x
a i l
y r
o
u
p t
t u
f o
h t
t a
h t
e
a
m
p
i f i l
r e
s '
n i
p
u
. t
T
h
s i
s i
a
n
n
e
c
o t
. r
n
n
e
t c
o i
n
f o
x e
e t
n r
a
s l
w
c t i
h
e
s
o t
m
u
e t
a
n
d
o t
n
e
g
e
n
r e
t a
r o
i c
c r
i u
. s t
c
e r
a
s
e
h t
e
o
u
p t
u
l t
v e
l e
f o
h t
e
o t
n
h t
e
c s
e r
w
d
i r
e v
- r
l s
t o
e t
d
c
o
t n
o r
s l
h
T
o
d
e
c
e r
a
s
e
h t
e
o
u
p t
t u
e l
e v
, l
o r
a t
k c
w
s i
. e
n
n
e
t c
o i
n
f o
v
r a
o i
u
s
o l
a
d
s
o t
h t
e
o
u
p t
t u
f o
a
m
p
i f i l
r e
o t
n i
p
t u
f o
o
u
p t
e
. r
W
h
e
n
n i
p
a l
c
, e
u
s
e
o
n
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h t
e
t
a r
a
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a
g
a
n i
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e
c x
e
s
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c
r u
e r
n
f t
o r
m
n
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i w
h t
h t
e
s
a
m
e
u f
s
e
y t
p
e
a
n
d
p
w
r e
s
s y
e t
m
f
o r
m
b
t a
e t
y r
s
u
p
p
y l
f
r o
r o
s
a t
n
d
y b
s
w
c t i
h
o
e v
. r
R
e
q
i u
e r
s
o
p
o
w
r e
s
o
u
c r
, e
1
5 .
a
m
p
s
m
a
i x
m
u
d
3
a
m
p
s
f
r o
h t
e
1
7
1
5
. C
g
a
n i
t s
e
c x
e
s
i s
e v
c
r u
e r
t n
d
a r
n i
f
o r
c
r u
e r
t n
s
o
u
c r
. e
R
e
p
a l
c
e
o
n
y l
i w
h t
p
o
w
e
r r
t a
n i
. g
d
t
r e
m
n i
l a
e l
s t
o y
u
c
o
n
n
e
t c
a
u
i x
a i l
o t
h t
e
m
i a
f n
a r
m
. e
TREBLE controls for the desired response. From a center
or 12 o'clock (MID) position, rotate either control clockwise
to boost response or counterclockwise to cut response.
If using the tone-control section is inappropriate for current
applications, such as Acousta-Voicing, move the EQ IN/
DEFEAT slide switch to the DEFEAT position. This
disconnects the BASS and TREBLE controls.
a
g
a
n i
t s
o
n
n
e
c
o t
. r
5. To use the compressor/limiter section, follow this
L
N I
K
O
U
T
f o
procedure:
s i
a
n
R
C
- A
Move the slide ON/OFF switch to the ON position.
s i
a
n
R
C
- A
Rotate the RELEASE TIME control to its maximum
s
. )
position (full clockwise).
u
i n
s ' t
m
x i
r e
Rotate the COMPRESSION RATIO control to minimum
a
y l l
position (full counterclockwise).
n
n
e
t c
r o
t n
o r
. l
T
h
s i
s i
Rotate the THRESHOLD control to its 12 o'clock (MID)
position.
s i
a
n
R
C
- A
Begin increasing the compressor/limiter by rotating the
s
. )
COMPRESSION RATIO control clockwise until you
e
s
g i
n
l a
achieve the desired amount of compression or limiting.
R
C
- A
y t
p
e
Since the amount of compression or limiting depends on
o
p
e
a r
e t
h t
e
the incoming signal level, you may need to readjust the
THRESHOLD control. To lower the triggering threshold,
e
g
e
n
r e
t a
r o
rotate the THRESHOLD control counterclockwise. If the
a
t f
system requires a higher incoming signal level to trigger
e t
t i
the compressor/limiter, raise the threshold by rotating the
a
m
p
f i l
e i
. r
THRESHOLD control clockwise.
NOTE:
A high compression ratio and a low threshold
t u
setting may decrease the system's apparent
n
f s
r o
m
r e
loudness since peak signals and parts of the
nominal signal may be above the threshold. You can
a
m
p
f i l
e i
. r
correct this by raising the threshold level; just rotate
o
w
e
r r
t a
n i
. g
the THRESHOLD control clockwise.
a
u
i x
a i l
y r
n
e
±
4
8
V
6. If you installed the 1783 line output module, adjust the
m
f
r o
h t
e
output level control on the 1783 for the desired output
m
a
n
level. The higher the output level, the better the
s
a
m
e
u f
s
e
signal-to-noise ratio. However. too high a level reduces
the available headroom and may cause premature
y r
clipping.
NOTE:
If you set the 1783's output level control at its MAX
(full clockwise) level, the output level is +8dBm.
However. this level only applies if you use a 100
mvrms reference level on the input of the output
module from the mix output bus. It also only applies
if you have a balanced 600 S2 load.
9
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