Biamp COLUMBIA SERIES User manual

_______________________________________________________________________________________
_
Biamp Systems, 14130 N.W. Science Park, Portland, Oregon 97229 U.S.A. (503) 641-7287
an affiliate of Rauland-Borg Corp.
COLUMBIA SERIES
Professional Mixing Console
Owner's Manual

1
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COLUMBIA SERIES
___________________________________________________________________________

2
gain
freq
low mid
solo
aux 8
trim
aux 1
aux 2
aux 3,5
aux 4,6
aux 7
high
low
mic
line
post
pre
aux 3,4
aux 5,6
1-2
3-4
5-6
7-8
L-R
mute
--15
+15
pan
600
100 5k
high mid
1.2k
200 10k
pad
(1)
(2)
(5)
(14)
(15)
(21)
(22)
(19)
(18)
(20)
(17)
(16)
(13)
(12)
(11)
(10)
(9)
(8)
(7)
(6)
(3)
(4)
(23)
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<
STANDARD INPUT CHANNEL CONTROLS
___________________________________________________________________________

3
gain
freq
low mid
solo
aux 8
trim
aux 1
aux 2
aux 3,5
aux 4,6
aux 7
high
low
mic
line
post
pre
aux 3,4
aux 5,6
1-2
3-4
5-6
7-8
L-R
mute
--15
+15
pan
600
100 5k
high mid
1.2k
200 10k
pad
(1)
(2)
(5)
(14)
(15)
(21)
(22)
(19)
(18)
(20)
(17)
(16)
(13)
(12)
(11)
(10)
(9)
(8)
(7)
(6)
(3)
(4)
(23)
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STANDARD INPUT CHANNEL CONTROLS
___________________________________________________________________________

4
balance
solo
aux 8
trim
aux 1
aux 2
aux 3,5
aux 4,6
aux 7
treble
bass
A
B
post
pre
aux 3,4
aux 5,6
1-2
3-4
5-6
7-8
L-R
mute
--15
+15
source
stereo
stereo
(2)
(1)
(4)
(11)
(12)
(15)
(16)
(18)
(19)
(20)
(3)
(5)
(6)
(7)
(8)
(9)
(10)
(13)
(14)
(17)
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$ "
STEREO INPUT CHANNEL CONTROLS
___________________________________________________________________________

5
balance
solo
aux 8
trim
aux 1
aux 2
aux 3,5
aux 4,6
aux 7
treble
bass
A
B
post
pre
aux 3,4
aux 5,6
1-2
3-4
5-6
7-8
L-R
mute
--15
+15
source
stereo
stereo
(2)
(1)
(4)
(11)
(12)
(15)
(16)
(18)
(19)
(20)
(3)
(5)
(6)
(7)
(8)
(9)
(10)
(13)
(14)
(17)
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A '
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< @$ *"$ $ 1% " & 9" '
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STEREO INPUT CHANNEL CONTROLS
___________________________________________________________________________

6
aux 1
return 1
pan
sub 1
aux 1
solo
L-R
1-2
3-4
5-6
7-8
sub 1
meter
calibrate
pan
solo
L-R
mute
+8
+5
+3
+1
0
--1
--3
--5
--7
--10
--15
--20
(3)
(1)
(5)
(8)
(9)
(10)
(12)
(13)
(14)
(2)
(4)
(6)
(7)
(11)
'() ,
!" *%2' / " ,@7 "( " % &
$"% )# ' " "" &
$ *"$ 9< " & C C ""$ % & 0. A
C0C ""$ &' . & " & $"" ? " $
( . * $ 9 $ <
'-) !,
!" $ %" $*"% ; & C C &$
% & $"% " " &$( & 0.' (
; ( &$ % & 2. 0.
'/) (.619 (.6 ' !4),
A ' " *"$
" A " *"$ " ' )# "
" 9 $ <
'0) 9 (.6,
!" $ ; % % & " & $"%
$ # $" )# 9 $
< )# &&$ " $ *"$ 9< 9< >
&$' ("$ " & $ # % $ $
D$$/ ""
'+) ,
A ' " *"$ $"% )# "
( & "" 9 < ! ;$ ,@7
""$ * " " " &&$ ( )# $ 9<
'2) (.6,
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" & #""( " % "' $ &&$' $/' "#' $
'5) ,
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A ' " *"$ 3 "
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$"% ( ,& 3" " " " ( : $ 9< ! "$"
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<
'7) (.-; /.0; +.2; 5.6 '% !$ !4),
A ' *"$
3 " $"% @$ *"$ $ 1%
" & 9" ''$< ! & 3 " $"% (
% " " ( : $ 9< ! "$" &
$ " 9
<
SUBMASTER CONTROLS
___________________________________________________________________________

7
aux 1
return 1
pan
sub 1
aux 1
solo
L-R
1-2
3-4
5-6
7-8
sub 1
meter
calibrate
pan
solo
L-R
mute
+8
+5
+3
+1
0
--1
--3
--5
--7
--10
--15
--20
(3)
(1)
(5)
(8)
(9)
(10)
(12)
(13)
(14)
(2)
(4)
(6)
(7)
(11)
'(8) . '! !$ !4),
A ' " *"$ 2& "
& $"% ,& 3" " 9
< ! & " $"% ( ,& 3" " " " (
: $ 9< ! "$" & $ "
9 <
) " $
" ( " 9" < ' *"$ " ( "
9" < ,& 3" " ,"/*"' " " ( " 9"
< * ' *"$ " ( " 9" < ,& 3"
"
& " $ " " " " '
' "$ " % *" $$
'(() ,
!" $ " & " $"% ( ,&
3" "' * $ *" " )" *"$ 9 <
'(-) ,
A ' " *"$ && "
$"% ' ,& 3" "' $ *"$ 9<'
9< &&$ :$ 9 $
<
'(/) ,
A ' " *"$ 2& "
( & "" 9 < ! ;$ ,@7
""$ * " " " &&$ ( 9< > 9<
'(0) ' 4),
!" " $ ; % & "
$"% ' ,& 3" "' $ *"$
9<' 9< > " *" %( & ' "
" "# ?*%' & &$' " > "
$ C C / 9"( "<
SUBMASTER CONTROLS
___________________________________________________________________________

8
left
stereo 1
balance
left
aux left
L-R
left
right
stereo 2
right
aux right
right
auxiliary left & right
outputs
stereo returns
balance
L-R
solo solo
meter
calibrate
+8
+5
+3
+1
0
--1
--3
--5
--7
--10
--15
--20
+8
+5
+3
+1
0
--1
--3
--5
--7
--10
--15
--20
(1)
(3)
(5)
(8)
(2)
(4)
(6)
(7)
(9)
'() ,
! *%2' / " ,@7 "( " % &
,& 3" " )#""( ,& 3" ' "
"" & $ *"$ 9< " & C C ""$ %
&
0 A C0C ""$ &' . & " & $""
? " $ ( . * $ 9
$ <
'-) !,
! $ %" $*"% ; & C C &$
% & $ " " &$( & 0.' ( ;
( &$ % & 2. 0.
'/) "19 " : !$419 !$4 ' !4),
A ' $
*"$ $"% ,& 3" " " A "
*"$ " ' $"% )#""( ,& 3" " "
9 $ <
'0) " : !$4 '9!! " : !$4 ),
! $ $ ;
% & 2& ,& 3" " " $"% )#""( ,& 3"
9 $ < ! $ &&$ "
$ *"$ 9< 9< )#""( ,& 3" + %"
"( $ & & $' $"' $ ""'
(' $ 9 "&"$" <
'+) ,
A ' $ *"$ $"% )#""( ,& 3"
" ( & "" 9 < !
;$ ,@7 ""$ * " " &&$ ( )#""(
,& 3" + $ 9<
'2) ( : - ' ),
! $ $ ; %
&
" & $"% 3 " 9
$ < ,& 3" "' * $ *" " )"
*"$ 9< ! $ &&$ & " 3 " 8(
3 & #""( " % "' $ &&$' $/' "#' $
'5) ,
! $ $ " & & 3 "
$"% ( ,& "' % & " 3 " $"% (
3" "' * $ *" " )" *"$ 9< .$ (
" "& &1" """ & $"% 3 " *""
"#' "( & " 3 "
'6) . '! !$ !4),
A ' $ *"$ $"%
3 " ,& 3" " ! ,& " $"% & 3
" ( ! 3" " $"% " 3 " ( !
&
& " 3 " $"% ( ,& 3" " " " (
.$ $ 9< ! "$" & $ "
9 <
'7) " : !$4 ' 4),
! " $ $ ;
% & $"% ,& 3" " " $" " ' *
"' $ *"$ 9< $" !
9 $ < ! > &&$ )#""( ,&
3" + 9< 9 "&"$" <
MASTER CONTROLS
___________________________________________________________________________

9
headphones
level
mono
solo
aux 5
mono
aux 6
aux 7
aux 8
L-R
push
to talk
power
on
solo
level
600 ohms
minimum
talkback
solo
system
meter
calibrate
+8
+5
+3
+1
0
--1
--3
--5
--7
--10
--15
--20
(1)
(2)
(4)
(10)
(11)
(3)
(5)
(6)
(7)
(8)
(9)
(12)
'() ,
!" *%2' / " ,@7 "( " % &
" (' " "" & $
*"$ 9< " & C C ""$ % & 0 A C0C
""$ &' . & " & $"" ? " $ (
. * $ 9 $ <
'-) !,
!" $ %" $*"% ; & C C &$
% & " " &$( & 0.' ( ; (
&$ % & 2. 0.
'/) 1 ' !4),
A ' " *"$
" " 9 $ < A " *"$
" ' ( " "
'0) < '##),
!" $ %" . & " ; & "
& !/$/ "$ " 9 $ < ,& 3"
" )# 2' *"$ % $ *" !/$/ )"
*"$ 9< 9< !/$/ * $"$"1" & "#" $
"' $/' " (' $
'+) . '! !$ !4),
A ' " *"$ !/$/ "
8( ,& 3" "
'2) 9 +; 9 2; 9 5; : 9 6 '9 !$ !4),
A '
*"$ !/$/ " $"% )#
'5) 4..#,
A ' " *"$ !/$/ " ,&
3" " )# 2' *"$ % $ *" )" *"$
9< 9<
'6) ,
!" ,@7 ""$ * * " " "#" $
9 :* ( <
'7) '3 4 ),
!" 2$$ 1C ;$/ " & "" ,&
3" " ( " ! ? " " & *"
?*%' ( " $" C:$C $' " ( "
& ( & $ "" 9
<
'(8) 3 4,
!" $ ; % % & "
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& & "$ " & ""%" $ "
'(-) ,
!" " $ ; % & "
" 9 $ <' * $ *"$
9< ! " " " & ,& 3" " "
MASTER CONTROLS
___________________________________________________________________________

10
lamp
stereo
right
left
B
right
left
A
line
patch
direct
out
mic mic
line
patch
direct
out
48V
mic
line
patch
direct
out
mic
line
patch
direct
out
(1)
(2)
(3)
(4)
(5) (7)
(6)
3
'() !,
! 2" E,3 ;$/ & $$" & "'
& *2"$ "$ "$ #'
$"% $ " "$ " %" $
& " *" 7F ' *" " " 90<'
" * 92<' " $ 9< 9
< & %" & ." (
" " 9 "&"$" <
'-) 06= '4% !4),
A ' "
*"$ " 0 % 7 "&
$" "$ ;$/ : :* * " &
$ "$ $"% "$ # F
("$ "$ *" &&$ ( :
:* % : :* *"$ %" & $
& & "$ " ! ;$ ,@7 ""$ *
: :* " 9 :* ( <
! %" " ('
! "
'/) !,
! 2$$ 1C ;$/ &
$$" & "' & " % %"$' $"%
$ " ," % %"$ "$ &&$ "'
$/' *" "$' ("4' $"'
"#' $ ," " ;$/ %" & $$"
& " $ 92$$< $ 92$$<
"' *" !" " 90<' 3" * 92<' % $
9< 9 <
'0) 4,
! 2$$ 1C ;$/ 2
@G12& " "' & $$" & "
$" %"$ $"% $ :$ ;$/
*" *" !" 9<' 3" 9"<' %
$ 9< $" C:$C $ 8"' *"$
* " % $' $'
$ :$ ;$/ ( 2&
"$ & %"$' $ "2$/
$ ! $$" "' *" "" $
"' $$ :$ *" !" 3" " 90< %
$ 9< ) 2$$ 1C $
( #$ " & :$' *%' " *"
" $ " & " $ > 9
< :$ " &&$ (
> 9 <
'+) ! ,
! 2$$ 1C ;$/ %"
$ 2& " & $"%
$ 7"$ + ( & & $$" ""%"
$ " & &&$ %"$' "2$/
$' "#' $ 7"$ + " *" *" !" "
90< % $ 9< 7"$ + "
&&$ ( $"% > 9
< 9 "&"$" <
3
'2) " : !$41 " : !$4 ' ),
! 2
$$ 3) ;$/ & $$" & "'
& " % %"$' $ " ," %
%"$ "$ &&$ "' $/' ("4'
$"' "#' $ ;$/ %" &
$$" & " $ 92$$<
$ 92$$< "' *" !" " 90< %
* 92<
A $$" $ "'
#$% #&%
& $$" &
$ 9< " $(' "$ "' $$
" $" $"$" 9 :* (
<
'5) %,
!" 2$$ .F $$ " %
7 9 ) #< & *" "$$
, $$ "" " "%
$$ ) , +1+&& *"$ 9
$ < , 7" $ 9
:* ( < %"
INPUT CHANNEL CONNECTORS
___________________________________________________________________________

11
sub 1 sub 2 sub 3 sub 4 sub 5 sub 6 sub 7 sub 8
return 1
aux 1 (bal)
sub 1 patch
return 2
aux 2 (bal)
sub 2 patch
return 3
aux 3
sub 3 patch
return 4
aux 4
sub 4 patch
return 5
aux 5
sub 5 patch
return 6
aux 6
sub 6 patch
return 7
aux 7
sub 7 patch
return 8
aux 8
sub 8 patch
(1)
(2)
(3)
(5)
(4)
'() (.6 '% ),
! 2$$ E,3
;$/ & $$" & $"%
" " & ( "&"' "2$/
$' &&$ %"$' $ +
$"$( $ *" 7F ' *" "
" 90<' " * 92<' " $ 9< 9
< > $ ' *" $ *" " "
90< " $ 9< @$
+ $" ( $ " *"$ %
" ' * ( "
$" " $"% :$ ;$/ 9< !
( "( ""%"
" " * "#"
""( " ' + (
! &$" & " " ( *
" " 9
< + " &&$ (
$"% > &$" 9
<
'-) (.6 4,
! 2$$ 1C ;$/
2& " "' & $$" & "
$" %"$ $"% :$
;$/ *" *" !" 9<' 3" 9"<'
% $ 9< $" C:$C $ 8"'
*"$ * " % ' $'
:$ ;$/ (
2& ! $$" "' *"
"" "' $$ :$ *" !"
3" " 90< % $ 9< ) 2
$$ 1C $ ( #$ " &
:$' *%' " *" " "
& " $ > 9 <
:$ " &&$ ( > 9
<
'/) 9(:-'),
! 2$$ 1C ;$/
& $$" & $"% )# )# "
" & &&$ %"$' $/' "'
(' $ )# )# %"
$$" & " $ 92$$< $ 92
$$< "' *" !" " 90<' 3" * 92<' %
$ 9< 9 < )# )#
$" ( " & $"% $ #
)# )# " &&$ (
$"% )# $ 9 <
'0) 9 /.6,
! 2$$ E,3 ;$/ & $$"
& $"% )# 2 " " & &&$
%"$' $/' "' (' $
)# $"$( $ *" 7F
' *" " " 90<' " * 92<' " $
9< 9 < > $ ' *"
$ *" " " 90< "$ 9<
)# )# $" ( " & $"%
$ # )# 2 $" ( " &
$"% $ # !/$/ " *"$
% " )# " &&$ (
$"% )# $ 9
<
'+) (.6,
! 2$$ 1C $$
& $$" & $ "' & " % %"$'
$"% 3 " ," % %"$ "$ &&$
"' $/' *" "$' ("4'
$"' "#' $ 3 " *" *" !"
" 90< % $ 9< 3 " " &&$
( $"% 3 $ 9
<
SUBMASTER CONNECTORS
___________________________________________________________________________

12
left right mono
stereo ret 1
left aux
left patch
stereo ret 2
right aux
right patch
left
tape out
mono patch
right
tape out
talkback
mic
lamp on/off
MADE IN U.S.A.
(1)
(2)
(5)
(4)
(7)(6)
(3)
'() "; !$4; : '! ),
! 2$$
E,3 ;$/ & $$" & $"% "
" " & ( "&"' $'
$ " + $"$( $ *"
7F ' *" " " 90<' " * 92<' "
$ 9< 9 < > $
' *" $ *" " " 90< "$
9< ! ,& 3" " + $" (
$' ' ' !/$/ " *"$ %
" ' * ( " $" "
$"% :$ ;$/ 9< ! " +
$" & ,& 3" " + "' *
( " $" " $"% :$ ;$/
9< !("$(' ,& 3" " + &
"$" 9$"<' " + " &
"$" 9"% "&$< ?*%'
&$" & " " ( * "
" 9
< " + " &&$ ( > 9
<
'-) " 4; !$4 4; : 4 '! 4),
! 2$$ 1C ;$/ 2& " "'
& $$" & " $" $"%
" + " :$ ;$/ *" *" !"
9<' 3" 9"<' % $ 9<
$" C:$C $ 8"' *"$ * " %
$"% "' $' "
" :$ ;$/ ( 2& !
$$" "' *" "" " "' $$
" :$ *" !" 3" " 90< % $
9< ) 2$$ 1C $ (
#$ " & " :$' *%' " *"
" " " & " $ > 9
< " :$ " &&$ (
> 9 <
'/) " 9 : !$4 9,
! 2$$ E,3 ;$/
& $$" & $"% ,& )# 3" )#
" " & ( "&"' $'
$ ,& )# 3" )# $"$( $
*" 7F ' *" " " 90<' " * 92<'
" $ 9< 9 < >
$ ' *" $ *" " " 90< "
$ 9< @$ ,& )# 3" )#
$" ( 2& " & $"% ,& 3"
" 9 "&"$" < ! "(
$ !&' ( ( & &
$' $"' (' *" ,&
3" " + $" & " (
,& )# 3" )# " &&$ ( )#""(
,& 3" + $ 9 <
'0) ( : -,
! 2$$
1C ;$/ & $$" & $
"' & " % %"$' $"% 3
" ," % %"$ "$ &&$ "' $/'
("4' $"' "#' $ 3
" *" *" !" & " 90<' 3" " " 90<'
% $ 9< $" C:$C $ 8"'
*"$ * & " " " $$
;$/ > ' *" $ *" !"
3" " 90< % $ 9<
' (& )*+, - --
9 <
3 " &&$ ( 3 $
9 <
'+) ## !,
!" 2$$ E,3 ;$/ " & $$"
& "' & *2"$ ("$ "$'
!/$/ " !/$/ "$ %" $
& " *" 7F ' *" " " 90<'
" * 92<' " $ 9< 9
< !/$/ "$ * $"$" "
)# 2 !&' "# (
$"$ *" %" " (/
$ " (
$ $" !/$/ " " &&$ (
!/$/ $ 9 <
'2) " : !$4 ,
! 2$$ 3)
;$/ %" $ 2& " &
$"% ,& 3" "' *" *" !" "
90< % $ 9< ,& 3" ! +
" % " % & 2 .' " & $
$/ $ 8"
'5) % 1"",
A ' " *"$ "
% 90=7 H ) #< , $$ 9
$ < , % "
&&$ ( , 7" 9 :* ( <
MASTER CONNECTORS
___________________________________________________________________________

13
T
S
R
T
S
T
S
B
C
A
4 ,
!" ( & $ !"13"1% 1C $$ !"1% 1C 9 3) <
$$ * " *" *" !" ) !" .' 3" ) !" ' % ) %.9< A
$$ $ :$ ;$/' !" . " 9< !" " 9"< & $ A %"
" & ? ;$/' !" . " ,& !" " 3" A %" " "
" 3 ;$/ 3 ;$/' !" . " ,& " !" " 3" "
1
2
2
1
3
> ,
!" ( & $ E,3 $$ & E,3 $$ "
*" *" :" :" 90<' :" :" 92<' :" :" 9< - $ * $$"
" $
"$ " ' "' )# 2 A $$"
"' *" $ *" :" 90< :"
9< > $$" 8"' " ( $( !"13"1% 1C $$ &
$' *" *" :" !" 90<' :" 3" 92<' :" % 9< >
"' !"1% $$
*" *" :" !" 90< :"% 9<
T
S
RS
TR
(10? 4 ,
!" ( & $ !"13"1% $$ $ " *" *" !" !" 90<' 3"
3" 92<' % % 9< - $ * $$"
" $ ," " )#
> $$" 8"' " ( $( E,3 $$ & $' *" *" !" :"
90<' 3" :" 92<' % :" 9<
S
T
S
T
(10? 4 ,
!" ( & $ !"1% $$ $ " *" *" !" !" 90< %
% 9< - $ * $$"
" $ ," "' $ 7"$ +' )#'
3 2 " !" ( & $ ( #$ " & ( :$ ;$/' *%'
-
> $$" 8"' " ( $( 3) $$ &
$ 9*"" " < 3) $$ ( & " ( & $' & $$" &
"
$ " ! + ,& 3"
S
T & R
S
T
!1!$1< !1< (10? 4 ,
!" ( & $ !"13"1% 1C $$
!"1% 1C $$ " *" *" !" 3" !" 90< % % 9< - " $
#$ " & ( :$ ;$/'
-
!" * :$ ;$/ 2& "$ >
$$" 8"' " ( $( 3) $$ & $
CABLES
___________________________________________________________________________

14
dimmer
lamp +15V -15V +10V +48V
on/off
Mixer Power Supply
PS/2
output voltage status
(1) (2) (3) (4)
'() !%%,
!" $ ; & %
, $$ 9 $
< A" 7" $ &( $$/*"' #"
% 90 % 7 H )< " ' & &
" A " $ " $2$$/*"'
% " & $ 90 % "<
! ;$ , ,@7 " % " $ !"
% * & "$$ ,
% " &&$ ( , +1+&& *"$ 9
$ <
'-) =$ !,
! &"% ,@7
""$ & $"% % ! ,
,@7 ""$ * , % " "' *"
$ " , % " $ *" 7"
$ ! 0= 2= ,@7 ""$ *
$"% % *"" 012 I & " 9012 % 7
H ) #< ! % " " $"$"(
*"" "#" $ ! 0 = ,@7 ""$ *
$"% % " " 90 % 7 H )
#< !" % ,@7 $"$"( *"" "#"
$ ! 0= ,@7 ""$ * :
:* % " " 90 % 7 H ) #<
! 0= ,@7 " &&$ ( $"% +1+&& *"$ 9<
*" $ && (' C"C
1&& &$" & " %
-
. ' /
/ -
/ " -
! / / -
/ - -- * " 0
'/) *06= 1"" !4 '4% ),
A '
" *"$ 0 % : :* %
: :* % " $ "$ " &
" & $ "$ "$ # 9
$ < !" %
1&& &$" $ $" 8" &
"
! %" "
('
! "
'0) !4,
!" *"$ :* (
" * "#" $
POWER SUPPLY
___________________________________________________________________________

15
115V:
2A SB Fuse
230V:
1A SB Fuse
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
-15V
+15V
gnd 15/48
gnd 15/48
gnd 15/48
gnd 15/48
+15V
-15V
gnd Lamp
gnd 10
+10V unreg
+48V
+Lamp
chassis
n.c.
n.c.
Mixer Power Supply
PS/2
115/230 VAC 50/60 Hz 200 Watts max
AC
Fuse
+/-15VDC Out+/-15VDC Out
chassis
gnd circuit
gnd
*
E
S
U
F
*
E
S
U
F
*
E
S
U
F
MADE IN U.S.A.
15 16
11 12 13 14
7 8 9 10
3 4 5 6
1 2
(4) (5) (6)
115V
(1) (2) (3)
'() =$ !4,
!" *"$ " &$(
C=C & " *" " % & 2 =) >
" *" " % & 2 =)' " *"$
C =C $ ) > 9< *" ) . &
9$$( " "$ *" * (<
'-) 4! @ 1!! @ ,
!" '
$" * "' $$ " J "$"
J & $"$" &$ " %" (
8" " (' % & " (
% C C ! " (
" " & 8" " ('
$
-
9
$ <
'/) ,
!" "2" $$
" & $$" & :* ( $ ) ""
$$ " %" " " & "#" $
! $ "% " 7 % & :*
( "#" $ ! $$
$" $ " $$ *( ('
%" ( "2$$"
'0) ,
!" $ " & $$"
)
1
- -/ !
2
'+) ,
3$ ) > ( *" %
( 9) . & = " ) . & =
"< & ) > $" *' * (
1 "#" $ ( 8" %"$
'2) ,
@$ & ;$/ %" 012 %
7 9 ) #< * # %"$ $ ."
( & $"$ ' " ""' "&"
$" $
POWER SUPPLY
___________________________________________________________________________

16
W2
W1
MIC/LINE
T1
AUX 2
PRE
POST
PRE/POST
AUX 1
W24
W25
AUX 5/6
AUX 3/4
AUX 7
PRE
POST
AUX 8
PCH
PREAMP
OUT
EQ OUT
POST
PRE
PRE
POST
POST
PRE
D
PAD
TRIM
HIGH
HIGH-MID
LOW-MID
LOW
MUTE
SOLO
PAN
MIC
Diagram A
Input Transformer
Diagram B
POST
PRE
AUX
RETURN
SOLO
METER
L/R
BALANCE
MODIFICATIONS
___________________________________________________________________________

17
& %" & ." ( " " ! " " &' &" $ &
"" 9!< " $ $"$" 9 7" )< 3% ; 9A A< & "#
& " "# & " " " ' /" $" " B 9$/ < " " B
98< ! & " $"% & $"$"
/ - "
- / -- "
>
. . ,
)# &$( & 2& " )# &$( & 2&
" ! ( ""%"( "&" $ + $ $"$" ' "$( " $ & )#
$' * ; "" 9 7" )< + "" " C:3@C 92&< " C:+!C
92&< +( "" " $$" *" ; ! "&( "% $ )# ' $ & "
; ""' % ; " ""' ; & $"$"
. .A,
! ; "" C:3@C' $" %' %" 2& $ " ! C:3@C ;
""'
, 3, - " 4/+ 5 " 6/7 *
' ( "&" %" 2@G $ "
+ $ $"$" ' "$( " : $' * ; "" 9 7" )< + "" "
CC & "$ "&" 92@G< " C:?C & $ 92&< +( C:?C "" "
$$" *" ; 9&$( & 2&< ! "&( "% $ & 2@G' $ & "
; ""' % ; CC ""' ; & $"$"
&!!$ ,
> C*"" C %" $ $ $"$" ' & $# "&"$" @$ *"" $" &
*" " ! *"" C:3@): +-!C' C@G +-!C' C:3@C' C:+!C 9
7" )< !( %" $ & " $ " "5 KC:3@): +-!C L 2@GM KC@G +-!C L 2@G 12:$M
KC:3@C L 2&12$M KC:+!C L 2&M )( & *"" ( ( " ""%" $ )#
! $$" "' &" % ; & $"% )# ' $" % 9> )# 1
' % ; A A $"%( N A A % )# ' ' & :1: *"$< 9 7"
)< ! " & *" " " *"" ! & *" %$
; "" & " )# '
-
> ' ; $( &
" 8"( " *" + C*"" C "&"$" "$ $" " $ & $ :$ 7"$
+ ?*%' "&"$" %$ 8" $"$ " $"$ "$ & ." (
>B : @3
! )#""( ,& 3" + &$( $"% 2& " & ,& 3" " 9*"$ * " %
$< ! ( ""%"( "&"' $"% $"$" ' $"% 2& " & ,& 3"
" 9*" &$ ,& 3" " > ;< + $ ,& 3" " $"$" *
; "" + "" " "$( " *"$' " C:3@C 92&< ! "" " "
.$ $' " C:+!C 92&< 9 7" .< +( C:3@C "" ; " 9&$( & 2
&< ! "&( " )#""( + & 2&' $ & " ; ""' % ;
C:+!C ""' ; & $"$"
8 - 0 / "
MODIFICATIONS
___________________________________________________________________________

18
3 ,
>8$( 3 9 ?42 /?4' 0. < 0 12.
! ?"$ 7""
9 ?42 /?4' . "' 0. < O I
" 7"" 9:!@< O I
@8"% F"
9 ?42 /?4' ""< 2.
#" J" 9"$ "< .
#" J" 9" "< .
!" 3 .
$ 9"$1$< /
Ω
$ 9"1$< /
Ω
#" 9"$< 0.
#" 9"< 0.
: :* 0 = 7 9 ) #<
3 AC,
?" @G 012. H /?4 9%"<
?"2" @G 012. H ?42 /?4 9/"<
,*2" @G 012. H ?42/?4 9/"<
,* @G 012. H ?4 9%"<
3,
>8$( 3 9 ?42 /?4' 0 < 0 12.
! ?"$ 7""
9 ?42 /?4' . "' 0. < O I
" 7"" 9:!@< O I
$ 9"1$< /
Ω
#" J" .
!" 3 .
#" 0.
?" @G 012. H /?4
,* @G 012. H ?4
> ,
>8$( 3 9 ?42 /?4' 0. < 0 12.
! ?"$ 7""
9 ?42 /?4' "( "' 0. < O I
" 7"" 9:!@< O I
F" >
91" ' ?42 /?4' "( "< 2.
/ 9$22$ H /?4< 2.
/ 9$22$ H /?4< 2.
/ 922 H /?4< 2.
/ 922 H /?4< 2 .
$ 91$< /
Ω
$ 9$1$< /
Ω
+ $ 9' ' "1$<
Ω
+ $ 9$1$<
Ω
+ $ 91$< /
Ω
#" + 9' ' "1$< 0.
#" + 9$1$< 0.
#" + 91$< 0.
#" + 91$ "< 0.
"" , $ 9' ' "<
Ω
"" , $ 9$< /
Ω
"" , $ 9< /
Ω
"" , $ 91$ "<
Ω
& A
91 =) H 1 ?4< A
,
$ $
?" "$ "$
A" "$ "$
7 "$ "$
&@3,
$ $ $
SPECIFICATIONS
___________________________________________________________________________

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
mutefader
EQ
treblebass
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
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