19
z-match
-15 dB
RF
trap
phantom
power
4-Band EQ
trim
low
high
mid high
patch
out/in
mic input
(low z)
line input
(high z)
pan
aux 1
aux 2
fader
+48V
signal
detect
-15 dBu
+15 dBu
left
right
sub 1
sub 2
sub 3
sub 4
sub 5
sub 6
sub 7
sub 8
aux 1
aux 2
aux 3
aux 4
aux 5
aux 6
aux 7
aux 8
solo
relay
left
right
sub 1
sub 2
sub 3
sub 4
sub 5
sub 6
sub 7
sub 8
aux 1
aux 2
aux 3
aux 4
aux 5
aux 6
aux 7
aux 8
solo
relay
RF
trap
input
xfmr
(opt.)
-20dB
1
L-R
assign
sub-
master
assign
solo
aux 3/5
aux 4/6
aux 7
aux 8
post
pre
mute
mute
pad
low
mid
high mid
freq
low mid
freq
mic/line
mic
preamp
Left
solo
mute
fader
EQ
treble
bass
trim
A / B select
switch
Right
Stereo Input A
Left
Right
Stereo Input B
patch
out/in
fader
pan
L-R
assign
solo
sub
aux
mute
sub
output
(balanced)
aux send
level
solo
aux send
output
(balanced)
+6
+6
LED meter
left
right
solo
relay
return
level
mono
return
balance
L-R
assign
return
level
(stereo)
stereo
return
talkback
level
talkback
mic input
(low z)
mic
preamp
aux 5
aux 6
aux 7
aux 8
L-R
assign
aux send
assigns
push-to-talk
right
output
(balanced)
+6
left
aux left
LED meters
mono
patch
out/in
mono
fader
mono
output
(balanced)
+6
mono
solo
LED meter
right
tape output
solo relay
& LED
headphones
(600 ohms min)
headphones
level
solo
level
right
aux right
Input Channels
Stereo Input Channel
Returns 1 thru 8
Stereo Returns 1 & 2
Talkback Microphone
Submasters 1 thru 8
Aux Sends 1 thru 8
Mono
Solo
direct
output
2
3
4
5
6
7
8
3
5
4
6
balance
1
L-R
assign
sub-
master
assign
2
3
4
5
6
7
8
aux 1
aux 2
aux 3/5
aux 4/6
aux 7
aux 8
post
pre
3
5
4
6
pan
1
L-R
assign
sub-
master
assign
2
3
4
5
6
7
8
auxiliary right
output
(balanced)
+6
left
output
(balanced)
+6
left
tape output
auxiliary left
output
(balanced)
+6
signal
detect
-15 dBu
+15 dBu
Aux Send jumper
options not shown
Aux Send jumper
options not shown
right
patch
out/in
right
fader
Right
aux right
level
left
patch
out/in
left
fader
Left
aux left
level
solo
solo
COLUMBIA BLOCK DIAGRAM