This project is cross between a Neve 33609 and the Chandler TG12413. the problem with the Neve is it uses germanium diodes with very small forward voltage and the signal has to be attenuated down to -40db to keep from having the diodes rectifying the signal. In my latest version I used Zener diodes with a higher forward voltage and didn't to attenuate as much. Zener diodes are tricky to work with so in a future version i might try using LED's....stay tuned
While down with sinus surgery, took the time to upgrade a piece of gear I built in 1995. The LA2 was the first piece of outboard gear I built for Lamont Audio. I will be up grading the the opto isolators from United Audio to Kenetek fast and slow units. While its on the bench i''m making a few modifications. In the original design I direct coupled the White follower. While that saved some parts and might have sounded marginally better I found the circuit was very particular about the brand of tube that would work in it, so I am putting it back to the classic circuit [AC coupled]. I am also getting rid of the high frequency pre emphasis [which I never use] and the stereo tie [which never tracked very well]. This allowed me to get rid of a lot of extra wire making the unit a lot more stable. When the new opto come in I will recalibrate the unit and reinstall.
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