I hooked it up to a speaker but the speaker just makes some noise, flexes up and stays up, then shutters a little and repeats, no sound wave it seems. It should be at 900hz I have a dual + - 9 volt battery supply. Pin 1 is empty as it is just offset. Pin 2 has incoming from pin 6 and is bridged over the OP amp to pin 6 also. Pin 3 is grounded. Pin 4 has - input. Pin 5 is empty. Pin 6 is the output going to res cap res cap res cap res then back to pin 2, 3 resistors are grounded. Pin 7 has the + input. Pin 8 is empty. I wired the speaker after the end resistor before it goes to pin 2 from pin 6, so it should have a full phase shift. Any ideas?