So, this could be (probably is) my receiver, but I was wondering if anyone has any insight.

I've got a pair of HTM-200 SEs powered by a Panasonic SA-HE75 receiver. The receiver was a hand-me-down from my parents when they upgraded, and previously powered a very large pair of speakers (three-ways with 12" woofers) and then eventually a full 5.0 setup for around a decade with no issues.

Anyway, the malfunction is thus: the HTM-200 SEs output no sound whatsoever every time the receiver is powered up, until I exceed a certain volume level on the receiver. After that point, the speakers play fine at all volume levels until the unit is restarted. I don't have other passive speakers to test with, but this occurs no matter which channel the speakers are connected to and no matter the settings (high-pass filter cutoff or "speaker size").

Any idea what's going on? I'm planning to upgrade to a modern AVR when I have the funds anyway, but I'm just curious.