You are correct Gibsonian, no dc protection. I should probably do that, but this is a new occurrence, although I have made some changes in configuration and connections. I'll look for offset problems Don, could be from the preamp as well I guess.
Old 400 WOPL Rev. A control board. It used to be silent on power up or down. Now it has a pretty loud pop on power up. Seems to be equal on both channels. What should I be looking for? I'm thinking a cap has possibly failed, but a little direction from the knowledgeable could save me a lot of...
I have 1 1/2 amp fuses on my ESS Heil drivers in my Rock Monitors. Maybe a bit conservative, I blow them when I get a little to "into" the music, but I'd much rather replace a fuse than a driver diaphragm. They reach well over 100 dB before blowing so that's more than enough.
He was actually instrumental in the recording/engineering of the original as well as some effects and recruiting the female singer Clare Torry in the "Great Gig in the Sky"
Alan Parsons Story of Pink Floyd Album The Dark Side Of The Moon | Premium | Professor of Rock - YouTube
We saw The Guess Who in Cadott Wisconsin at the summer rock festival several years back. They played quite a few BTO songs, which would be led in by saying, "A little something from another band I'm familiar with". Fabulous show on a hillside in rural Wisconsin.
Great frame of mind. This one really rings true as well.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwj3iubD0NT-AhXAkokEHYcyCYAQwqsBegQICBAB&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D5JAHAFvcr2o&usg=AOvVaw1Og1IWKq24UvFcEZzIBHCM
Gene,
I have a DH220 in great shape if you are interested. It's just sitting on the shelf currently. Was planning on recapping it at some time, but you know how time is.
PM if you would like more info or pictures.
I seem to remember reading that the water also absorbed the sound energy as well, which was enough to shatter concrete alone.
EDIT: Acoustical damage to the launch vehicle not the concrete. Definitely protects the concrete from the heat though.