Operator`s manual

MODEL CS 208

M/S Decode Option

See layout B.

Standard setting: J4 is jumpered & J3, J5 are open, U2, S3 etc. are not installed.

One or more channels may be set up to decode an M/S mic configuration.

For example: To set up channel 2 - Install components on board B as below:

S3 BB26AH

U2 TL071 / OP176

C13,15 47µ - 25v (electro) (SU)

C14 10PF NPO ceramic

X3, X4 .1µ ceramic (general purpose)

R20 120k 1% MF 1/4w

R21,22 100k 1% MF 1/4w

R23 47k 5% / 1% 1/8w

J3 Jumper .4”

J5 Jumper .1”

J4 N/C

Switch ‘s’ (side)

Up = Normal phase (no decode).

Down = Reverse phase (M/S decode).

Use channel 1 for the mid mic (cardiod/omni) & channel 2 for the side mic (figure of eight). With both pan pots centered

& equal gain for both channels, the M/S mic will be decoded to L/R stereo at 50%.

Mid = L + R (channel 1) (bus A + B or C + D)

Side = L - R (channel 2) ( bus A - B or C - D)

Any number of ‘

even’ channels may be set up for this option.

Also see stereo channel CSST-208 for a dedicated 1 channel M/S decoder.

AN 2E - INPUT CHANNEL OPTIONS

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