Bose OC-1 AWCS-II Service Manual download pdf (Page 6)

Output is measured from U3 pin 7 or U6 pin 1. Controls are set at:: Mode 4 (Option),

Output Mode: Normal, Low Frequency Level: 0 dB, and Input Level: +4 dB.

Figure 1. High Frequency EQ

Output is measured from U5 pin 14. Controls are set as in Figure 1.

Figure 2. EQA + EQB

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Bose OC-1 AWCS-II Service Manual Page 6