I just bought a Peavey 1516 bass cabinet and while moving it around heard a noise inside the cabinet. I opened it to find a capacitor not connected as well as one of the wires to the 8" speaker. Does anyone know where I can find a wiring diagram for just a cabinet? better yet does anyone have a photo of where this "blue" capacitor goes. It is a 76uf 110v NP K 85 degree C
Welcome to TalkBass! If I had to guess I would say it's part of the crossover. That's what divides your signal and sends lower frequencies to the big speaker and higher ones to the smaller soeakers. It's likely on the inside of the jack plate.
Chances are it goes between the loose wire and the input jack, acting as a basic crossover filter. The two 8 inch speakers are probably connected together in series and run in parallel to the fifteen. A heavy but nice sounding cab. I used ti have one way back in the eighties.
I had a 1516 up until the beginning of this decade (purchased in '95). I contacted Peavey regarding speaker replacement and they were quite helpful. If you haven't already, try contacting them. As two fingers said - welcome to talkbass.
Historically speaking if you do call Peavey, might as well source replacement 8" while you're at it. It's only a matter of time, lol.