Bonham’s squeaky pedal has been talked about by drummers since the early-70’s. That Ludwig Speed King pedal is referred to as the Squeak King amongst players ;-) . In the mid-to-late-70’s many drummers switched to the Camco pedal, now known as the DW.
Bonham’s Squeaky Drum Pedal
On the song Since I’ve Been Loving You, Bonzo’s pedal squeaks. How pronounced is it on your system? How loud do you have to play the song before you notice it?