1. http://kd1jv.qrpradio.com/resonatespkr/CWSPKR.HTM
2. http://www.n5ese.com/res_spkr.htm
a. http://www.n5ese.com/res_spkr_sketch.jpg
b. http://www.n5ese.com/res_spkr_parts_med.jpg
3. http://www.qsl.net/n5iw/RESONANT.htm
4. http://www.n5ese.com/res_spkr_sketch.jpg
5. http://www.n5ese.com/res_spkr_parts_med.jpg
