Heres a neat book with the specifications of many rectifier subs. http://www.asahi-eng.co.jp/pdf/rdb2k/section4.pdf Tony Saracco TCS ELECTRONICS 406 Andra Ct. Gilberts, IL 60136 tcselectronics@xxxxxxxxx ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/