Since we are on the subject of speakers maybe this is relevant. I am working on a couple of KA-7002's. I disconnected the 224k/50v capacitors in series with 0.47 ohm resistors that connected two pins on the driver board socket to ground so I could rotate the socket and thereby gain access to the board.
It worked great. Fixed the drivers then hooked up dummy loads. Again, worked great. Then hooked up speakers. Not so good. the amp went into overload/oscillation very quickly and at about a 1 Watt load. Lots of head scratching and reading threads on this forum until it dawned on me that the r/c components were the solution.
A couple short clip leads confirmed my suspicions about the network's purpose.