Legacy Whisper Steradian DSP

I know this is a very long shot, but want to see if anyone has the original Steradian DSP for the Legacy Whisper speaker in working condition for sale? My Steradian DSP has problems as it intermittently turns on and off at random; sometimes it would work for days and sometimes it won't turn on, I have to unplug the power for a few mins before it works again. The Whisper really sounds terrible without the DSP...
Thank you,
BT