Re: Advent (sunfire) AV550S Sub?
It's not uncommon to have a grounding issue that causes hum. Tighten all the internal & external nuts on the connectors & see if that reduces your hum.
BillD had a similar issue & found it to be an internal connector nut loose, if I remember correctly....
and WELCOME to the forum~
BillD had a similar issue & found it to be an internal connector nut loose, if I remember correctly....
and WELCOME to the forum~
TNRabbit

From FrankieD's lips to your ears: Sunfire: a quiet box of endless power.
Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)
RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.

From FrankieD's lips to your ears: Sunfire: a quiet box of endless power.
Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)
OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"
RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
