Hi Bill, I am not using this piezo. I'm using a double horn piezo on top of a 98dB 2 way monitor (reinforcement) that is short on highs. (I found two nice and blue, equal Philips MKP caps -- of the 5dB attenuator -- on a small TV set from garbage.) I will be pleased to help you (is anything you want to ask?) if I can. What are your 5" speaker parameters (brand & model)?, you don't have a tweeter besides the piezo I guess.