Ken Nelson's Phase Linear 3300 ser II Pre-amp

Ken.nelson0317

Ken.nelson0317

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#122
laatsch55 said:
Damn Kenny, 3 posts in in less than two weeks!!! You OK Bud???
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lol. Had a couple easy weeks with more time at the house. Doing pretty good. How you doing. This pre-amp gonna kick butt! Probably going to let ya go through these Marantz pieces. Ya up for the challenge.
 
laatsch55

laatsch55

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Yep, great thing about that, THE MARANTZ GURU is only 4 hours away in Billings, Catrafter, Tom Williams is GOOD. So if I get hung up and can get my ass unhung fairly cheaply. I am waiting on 2 tiny 10PF caps that Mouser back ordered on me. Another couple weeks yet. Tell your wife your pusher is putting the squeeze on ya!!!!!!!!!!!!
 
NavLinear

NavLinear

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It's looking very good Lee. Will you be putting in on the AP? Are you double nutting the pots? I found for aligning them that a nut on the inside and one on the outside stabilized the pot and provided the most flexibility for alignment before soldering the pots back on the motherboard. Those new push buttons from ED look very nice. I haven't given up on a new design of this - my first push button design is on paper but I do need to get the design programmed in our CAD system and then grow one. My thought is to have the button and the housing made from ABS and the shaft made from a threaded metal screw. The component that would mate to the actuator would also be made from ABS. The threaded shaft would allow for some adjustments between the button throw and the actuator allowing for positive engagement - at least that's the plan.
 
laatsch55

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Sounds like an excellent plan there FaboNav. Yep double nuts on the pots, only way you can get them square, especially with the board wavin all over the place.
 
NavLinear

NavLinear

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Is the power indicator light ok - I do have something to replace if not. I think that I have another housing or two that we grew and an butt ton of LEDs.
 
laatsch55

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Ya know he just might. He said at one time there wasn't an ugly one in the bunch----ALL HOTTIES..
 
laatsch55

laatsch55

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But not much else.

Got a problem. Something is pulling the -15 volt power supply down to -1.38 volts. Still eliminating components....
 
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