You need quite a bit of CV to hit the audible range, so if you land on 7-9 kHz odds are there’s some problem with the oscillator section. I’d start by checking the oscillator cap (pin 11 to ground), then the pins next to it (pin 12 goes directly to ground, pin 13 to +12V via 1.5M, and pin 14 to ground via 1.8k).
If that all checks out, turn it on and measure the CV components, on the other side of the summing resistors (or across them). See here: