I'm using a MiniDSP 2x4HD as equalizer, electronic crossover, and volume control to an amplifier and speaker arrangement. The MiniDSP gets its signal via TOSLINK fiber out of a recent model Sony Bravia TV. The power amplifiers are class D with signal sensing and shutdown and I leave the amplifiers otherwise turned on all the time. It all works great, I get the sound from the good speakers and big amplifiers and the TV does the picture, with its internal speakers turned off.
BUT when the TV is turned off, and after some random number of hours go by, the system will start to make a horrifiicly loud hashy SCREECH sound! Either the Sony TV is emitting random garbage IR onto the TOSLINK cable (seems doubtful, but who knows?) or the 2x4HD's optical input's signal threshold is drifting down to where it is responding to noise and translating it into ghastly audio blasting (seems more likely).
I've been dealing with it for the past year by just remembering to mute the MiniDSP (via remote) after turning the TV off. But when I forget, like last night, I'm afraid the problem could burn out my speakers, possibly even be a fire hazard, if I'm not around?? And in my soon-to-be new living arrangement the TV will likely be operated by others including a child, so I need a simple solution for this.
Is there some sort of box that will switch AC power of external equipment, responding the HDMI CEC as if it were an HDMI sound bar for power on/off? I've tried googling for this and all I've come up with are "HDMI switches", which I don't need -- and I certainly don't need more remote controls!
Or some other way around this problem? Hard to believe no one else has had need to auto-switch power to the stereo when TV is turned off...
Thanks
Bill
BUT when the TV is turned off, and after some random number of hours go by, the system will start to make a horrifiicly loud hashy SCREECH sound! Either the Sony TV is emitting random garbage IR onto the TOSLINK cable (seems doubtful, but who knows?) or the 2x4HD's optical input's signal threshold is drifting down to where it is responding to noise and translating it into ghastly audio blasting (seems more likely).
I've been dealing with it for the past year by just remembering to mute the MiniDSP (via remote) after turning the TV off. But when I forget, like last night, I'm afraid the problem could burn out my speakers, possibly even be a fire hazard, if I'm not around?? And in my soon-to-be new living arrangement the TV will likely be operated by others including a child, so I need a simple solution for this.
Is there some sort of box that will switch AC power of external equipment, responding the HDMI CEC as if it were an HDMI sound bar for power on/off? I've tried googling for this and all I've come up with are "HDMI switches", which I don't need -- and I certainly don't need more remote controls!
Or some other way around this problem? Hard to believe no one else has had need to auto-switch power to the stereo when TV is turned off...
Thanks
Bill
I think I may have found a fix. Ordered a "master/slave" power outlet. TV plugs into the master outlet, when the strip sees much power being delivered (TV ON), the five slave outlets turn on for the amplifiers. Hope this works.'
Still open to other solutions if anyone has any.
Still open to other solutions if anyone has any.
