Recent content by Boston Chris

:)

Well, to be fair, I can only (barely) hear the hum when the subwoofer amplifier is turned up all the way, there is no input into Line Magnetic amp, and I’m kneeling with my ear 6 inches from the subwoofer driver. So maybe I’ll just stop doing that, stop looking for any ground loops, and listen...

Try: 1: subwoofer with RCA cable but not connected to amp. NO HUM 2: subwoofer with RCA cable and the RCA cable at the amp shorted with aluminium foil so pin and shield are connected. NO HUM 3: same as 2 but now hold the RCA connector with aluminium foil against the shield of the RCA out of the...

Given that the powered subwoofer hum requires RCA connection with the amplifier, and powering both the subwoofer and the integrated amplifier from the same multiple outlet, heavy duty extension cord has no effect on the hum, is a subwoofer isolation transformer still a possibility for hum...