I am the proud new owner of a pair of mint SDA-1A's and a new member to this site - good site it is.
My problem is that these speakers didn't come with a interconnect cable so just to test that the SDA system is working I jammed some wires into the jacks making sure the the same wire went to both large blade sockets and the same thing with the smaller socket jacks. I know this is crude but I just wanted to make sure the system is working before fitting new sockets and making a new cable.
All went well for a couple of minutes then all of a sudden a very loud beeping sound was coming out of the speakers, I then quickly switched off the amplifier and am now waiting for some feedback on what would cause this. The amplifier I am using is a VTL Stereo 90. Before I go I must mention that after this happened I pull out the wires to the interconnect sockets and play the speakers as normal. The speakers played flawlessly, no probems at all.