ColSaulTigh
Headphoneus Supremus
Hello all!
I am looking for an answer to a question that Google seems to be unable to provide (unless I'm using the wrong search terms). I just now discovered that if I shine a flashlight on my tubes, I can hear a very audible hum/buzz that goes away when I move the flashlight off them.
Details:
Amp: Woo Audio WA5-LE Gen 2 w/upgraded internals
Tubes: Power tubes - Elrog 300B-Mo, Drivers - National Union 6F8G w/Woo Audio Adapters, Elrog 5U4G rectifiers
Headphone cable: Norne Audio Solvine (copper/silver combo)
Headphones: ZMF Atrium
Details:
I'm listening in a dark room (except for the monitor and the light from the tube glow). I dropped something on the floor, so I grabbed a flashlight (Harbor Freight LED Ultra-bright "penlight" style, uses 2 AAA batteries) and found what I dropped. When I moved the light up, I happen to shine it on the tubes, and I heard a very substantial hum/buzz. When I moved the light off the tubes, it went away. Flashlight was approximately 2' from the tubes (give or take a few inches). I was able to narrow it down to the sound coming when I hit the National Union driver tubes directly with the beam. Move it off them and the hum/buzz goes away instantly. I have never noticed this phenomenon before and wondered how that flashlight could be affecting the sound so dramatically. I figured I'd turn to y'all for help on this.
So, can anyone explain why a flashlight causes my system to hum/buzz when shining a light on my driver tubes? I can try to make a video of this if y'all think it'll help.
Thanks!
I am looking for an answer to a question that Google seems to be unable to provide (unless I'm using the wrong search terms). I just now discovered that if I shine a flashlight on my tubes, I can hear a very audible hum/buzz that goes away when I move the flashlight off them.
Details:
Amp: Woo Audio WA5-LE Gen 2 w/upgraded internals
Tubes: Power tubes - Elrog 300B-Mo, Drivers - National Union 6F8G w/Woo Audio Adapters, Elrog 5U4G rectifiers
Headphone cable: Norne Audio Solvine (copper/silver combo)
Headphones: ZMF Atrium
Details:
I'm listening in a dark room (except for the monitor and the light from the tube glow). I dropped something on the floor, so I grabbed a flashlight (Harbor Freight LED Ultra-bright "penlight" style, uses 2 AAA batteries) and found what I dropped. When I moved the light up, I happen to shine it on the tubes, and I heard a very substantial hum/buzz. When I moved the light off the tubes, it went away. Flashlight was approximately 2' from the tubes (give or take a few inches). I was able to narrow it down to the sound coming when I hit the National Union driver tubes directly with the beam. Move it off them and the hum/buzz goes away instantly. I have never noticed this phenomenon before and wondered how that flashlight could be affecting the sound so dramatically. I figured I'd turn to y'all for help on this.
So, can anyone explain why a flashlight causes my system to hum/buzz when shining a light on my driver tubes? I can try to make a video of this if y'all think it'll help.
Thanks!