I picked up a nice, used Bogen speaker and I think it would mate up nicely with my Racal RA-17 receiver. The speaker has a selector on the back for 8 ohms or line input, and outputs from 1 watt to 15 watts @ 70 volts.
The cabinet is sealed so I can't look at the line amp. I presume the 70 volts is phantom power and duplexed on the line input so I will need to build a supply but I need to ask you guys what you think or know about this.
Would this be 70 volts ac or dc? How much current would you provide for 15 watts of audio and to power the amp inside? How would I strip off the voltage at the line level input?
Here is a link to a spec sheet. Thanks in advance.
Mike
http://www.bogen.com/products/pdfs/foregroundspeakerpdfs/FG15s.pdf