Re: 70 Volt line switching

This is not practical to be done by semiconductor.  You would require
another 70 Volt line amplifier output stage to drive the load. This
would also be very involved and costly!

Jerry Greenberg

--


[EMAIL PROTECTED] (Lee Salter) wrote in message news:<[EMAIL PROTECTED]>...
> We have a switcher here selecting serveral different 70V line audio 
> signal sources for a PA speaker within a changing room behind
> backstage.
> The switcher is bulky and noisy because relays are used. Just
> wondering
> can the switching be done with electronic component, is there any 
> commercial product for such purpose, or any semiconductor IC for such 
> function ?
> 
> 
> --------------------------------------------------------------------------------
> I work for a systems integrator and I don't know of switching 70 Volt
> line level signals.  I do know that there are solid state relays for
> switching power, but I don't know if they would work for audio.
> 
> Lee Salter
> [EMAIL PROTECTED]