Page 1
654321
15k
1
Pin #1/Sleeve
Pin #2/Tip
D
Pin #3/Ring
XLR or TRS Jack
CW
5k Log (audio) Taper
Chassis Ground
Pin #1/Sleeve
Pin #2/Tip
Pin #3/Ring
XLR or TRS Jack
C
Chassis Ground
Pin #1/Sleeve
Pin #2/Tip
Pin #3/Ring
XLR or TRS Jack
B
Chassis Ground
Pin #1/Sleeve Pin #1/Sleeve
Pin #2/Tip
Pin #3/Ring Pin #3/Ring
XLR or TRS Jack
CW
5k Log (audio) Taper
CW
5k Log (audio) Taper
CW
5k Log (audio) Taper
Chassis Ground
A
1 2 3 4 5 6
25k Dual Linear
A
CW
3
6
25k Dual Linear
B
CW
4
1
25k Dual Linear
A
CW
3
6
25k Dual Linear
B
CW
4
1
25k Dual Linear
A
CW
3
6
25k Dual Linear
B
CW
4
1
25k Dual Linear
A
CW
3
6
25k Dual Linear
B
CW
4
2
5
15k
15k
2
5
15k
15k
2
5
15k
15k
2
5
15k
22k
Pin #1/Sleeve
Pin #2/Tip
Pin #3/Ring
XLR or TRS Jack
CW
5k Log (audio) Taper
Chassis Ground
22k
22k
Pin #1/Sleeve
Pin #2/Tip
Pin #3/Ring
XLR or TRS Jack
CW
5k Log (audio) Taper
Chassis Ground
22k
22k
Pin #1/Sleeve
Pin #2/Tip
Pin #3/Ring
XLR or TRS Jack
CW
5k Log (audio) Taper
Chassis Ground
22k
22k
Pin #2/Tip
XLR or TRS Jack
CW
5k Log (audio) Taper
Chassis Ground
22k
1
25k Dual Linear
A
CW
3
6
25k Dual Linear
B
CW
4
1
25k Dual Linear
A
CW
3
6
25k Dual Linear
B
CW
4
1
25k Dual Linear
A
CW
3
6
25k Dual Linear
B
CW
4
1
25k Dual Linear
A
CW
3
6
25k Dual Linear
B
CW
4
15k
2
5
15k
15k
2
5
15k
15k
2
5
15k
15k
2
5
15k
22k
D
22k
22k
3
50k Log Taper Dual
A
2
1
22k
4
50k Log Taper Dual
B
5
22k
22k
22k
22k
6
Title
B
Date: 29-Jun-2003 Sheet of
File: C:\Website\protel database\website.ddb Drawn By:
A
3
2
A
3
2
OPA604
OPA604
6
49.9 Ohm
10k
1k
6
49.9 Ohm
10k
1k
Passive Mixer with Line Driver Output
Number RevisionSize
10k
10k
Left Output
Right Output
C
B
A
Page 2
654321
connector) is appox 600 ohms with the values shown.
D
Input #1
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
5k
Input #1
5k
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
5k
D
Chassis Ground
Input #2
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Input #3
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
C
Input #4
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Input #5
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Input #6
B
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
5k
Input #2
5k
5k
Input #3
5k
5k
5k
5k
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Summed Output
Input #4
Input #5
5k
5k
Input #6
5k
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
5k
5k
5k
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
Summed Output
XLR or TRS Jack
C
5k
5k
B
Input #7
Input #8
A
1 2 3 4 5 6
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Balanced Input Summing Un-Balanced Input Summing
5k
5k
5k
5k
Note....
To prevent ground loops, you can use a 0.1mfd
ceramic cap from pin #1/Sleeve to chassis ground,
instead of a hardwire connection.
The Source impedance (looking back into the output
The Input impedance for each input is appox 5.7k
ohms.
Load impedance (the input impedance of the device
to which the output of the summing buss is attached)
should be 10k ohms or higher.
Input #7
Input #8
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
Pin 1/Sleeve
Pin 2/Tip
Pin 3/Ring
XLR or TRS Jack
5k
5k
Title
Date: 29-Jun-2003 Sheet of
File: C:\Website\protel database\website.ddb Drawn By:
8 Channel Passive Summing Busses
Number RevisionSize
B
A
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