A simple resistive divider network to dampen the output of an audio amplifier 16db.
See that spike at 6KHz? It was always there no matter what volume my Logitech Z-5500 Digital was set to. Very annoying.
The solution was this attenuator circuit that was fitted to each of the 5 channels of the amplifier. That peak at 6KHz is now 16db less annoying. Problem solved.
With instructions on how to tune the final resistor values.
Print 2, they fit together. There are slots in which the pcb's fit.
With 2 years of collected dust, but hey, it works :-)