Almost definitely, you blew one channel. You normally set it to stereo, and lost one side. When you switch to mono, you are hearing half the power, divided into two speakers.

Any fuses you can check?


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.