pinkfloydcramer Posted July 4, 2020 Share Posted July 4, 2020 I had the TREK but replaced it with one from Speakeasy. Works great. I think you could still find one on Reverb or eBay. One becomes available about every 6 months or so, and then they're usually paired with a Leslie. Quote Link to comment Share on other sites More sharing options...
elif Posted July 5, 2020 Share Posted July 5, 2020 While I have your attention, I understand that the leslie slow/fast control is done by applying a DC voltage to the audio signal. How does that work?The stock 122 (6-pin) uses a DC-controlled relay to switch Leslie motors. The switching voltage needs to change from 0V to at least 35V to switch from tremolo to chorale (or vice versa, I forget which). The balanced audio rides the switching voltage. Does your metal box do that? I only see a foot switch in the white box which I assume is the preamp?It switches the DC, controlled by the momentary foot switch (fast/slow/stop). There is no preamp per se. It uses a transformer. Quote Link to comment Share on other sites More sharing options...
U.Honey Posted July 6, 2020 Share Posted July 6, 2020 While I have your attention, I understand that the leslie slow/fast control is done by applying a DC voltage to the audio signal. How does that work?The stock 122 (6-pin) uses a DC-controlled relay to switch Leslie motors. The switching voltage needs to change from 0V to at least 35V to switch from tremolo to chorale (or vice versa, I forget which). The balanced audio rides the switching voltage. Does your metal box do that? I only see a foot switch in the white box which I assume is the preamp?It switches the DC, controlled by the momentary foot switch (fast/slow/stop). There is no preamp per se. It uses a transformer. Thank you for all the information. I think I'm going to try to make a connector box myself. And, I might even build a tube preamp now that the 300V comes for free from the Leslie. There appears to be tube preamp schemas available in the internets. I'm not sure if the preamp is really necessary, though because the clonewheel puts out line level signal. Quote Link to comment Share on other sites More sharing options...
mate stubb Posted July 6, 2020 Share Posted July 6, 2020 I'm not sure if the preamp is really necessary, though because the clonewheel puts out line level signal. Yes, it's necessary. The output of a Hammond preamp is many times hotter than line level, and the leslie amp needs that level in order to deliver full power and creamy overdrive. Quote Moe --- Link to comment Share on other sites More sharing options...
Outkaster Posted July 7, 2020 Share Posted July 7, 2020 TREK UC1A it's not even close. Quote "Danny, ci manchi a tutti. La E-Street Band non e' la stessa senza di te. Riposa in pace, fratello" noblevibes.com Link to comment Share on other sites More sharing options...
Tonysounds Posted July 7, 2020 Share Posted July 7, 2020 Vintage Vibe isn't making those leslie pedals presently. I tried to order one back in November, and the boxes were no longer on the website. A phone call confirmed same. Quote Hitting "Play" does NOT constitute live performance. -Me. Link to comment Share on other sites More sharing options...
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