Meyer Sound Users Community | Hi all, wondering if anyone might have a suggestion on how to diagnose a problem with a pair of UPM-1 that I purchased used about 10 years
![Meyer Sound ULTRA-X40 Loudspeaker and 750-LFC Subwoofer Power Couple | Loudspeaker, Speaker design, Subwoofer Meyer Sound ULTRA-X40 Loudspeaker and 750-LFC Subwoofer Power Couple | Loudspeaker, Speaker design, Subwoofer](https://i.pinimg.com/originals/78/e9/44/78e94407cca9bc139c9082c5198d7e37.jpg)
Meyer Sound ULTRA-X40 Loudspeaker and 750-LFC Subwoofer Power Couple | Loudspeaker, Speaker design, Subwoofer
![Meyer Sound LYON-WXT-RMS-RIG-WP 2 X 12" Active Array Speaker, Weather Resist, Ext. Coverage | Full Compass Systems Meyer Sound LYON-WXT-RMS-RIG-WP 2 X 12" Active Array Speaker, Weather Resist, Ext. Coverage | Full Compass Systems](https://www.fullcompass.com/common/products/original/413536.jpg?og-canvas)