i recommend asking this question on 'The Tape Project Forum' here;
http://www.tapeproject.com/smf/index.php
http://www.tapeproject.com/smf/index.php
Reel to Reel Mods
I have an Otari MX5050 BII-2 R2R, and I am thinking about wiring a pair of rca's directly to the playback head. Then connecting the rca's to an external tape pre, and then using the tape/source switch to turn off the outputs. In the hope that the playback head will provide enough output to send the signal to the tape pre. Any thoughts?