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"WHAMMY" Pass DIY headphone amp guide
"WHAMMY" Pass DIY headphone amp guide
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Old 25th January 2019, 10:33 PM   #1031
gwolfman is offline gwolfman
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When measuring the PSU voltages in steps 10 and 11, are the regulators installed and soldered already? Some photos show with, some without, the description suggests theyíre there (inaccurate voltages at this point in time), but the regulators arenít noted for install until step 20. Iím trying to put a build video of this together and want to make sure I get it right. Thanks!
Well, looking over the schematic I'd have to assume they're there since the recommendation is to use C9's positive terminal to measure and that would appear to only work with the regulator in place. I'll give it a go and see if it blows up or not, j/k. Maybe a note should be made in the guide to install the regulators before step 20.
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Old 26th January 2019, 03:30 AM   #1032
6L6 is offline 6L6  United States
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"WHAMMY" Pass DIY headphone amp guide
Hmmm... I see that I never actually said to install the regulators in the PSU section and did say it in the MOSFET section... Yup. That’s not particularly clear. I’ll change that right away.


EDIT: Ok, I changed it. Should be in a bit better order, and a few things were added/revised for more clarity.

Last edited by 6L6; 26th January 2019 at 04:23 AM.
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Old 26th January 2019, 05:21 AM   #1033
gwolfman is offline gwolfman
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Hmmm... I see that I never actually said to install the regulators in the PSU section and did say it in the MOSFET section... Yup. That’s not particularly clear. I’ll change that right away.


EDIT: Ok, I changed it. Should be in a bit better order, and a few things were added/revised for more clarity.
Sweet, thanks. My PSU tests worked as hoped, and I've got some video up to this point. I'm going to try and finish up the amp tomorrow (minus the enclosure) and upload the video for perusal (I hope for feedback and corrections).
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Old 26th January 2019, 06:07 PM   #1034
AllanMarcus is offline AllanMarcus  United States
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Default AM Radio?

Hello,

When I touch the volume knob (which is milled aluminum), I can hear AM radio. Any idea why, or is this just an added bonus feature?
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Old 26th January 2019, 06:13 PM   #1035
6L6 is offline 6L6  United States
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"WHAMMY" Pass DIY headphone amp guide
You're an antenna!

First thing to try is disassemble the chassis and make sure you've got bare metal touching bare metal at all the various pieces. Scratch/sand through the anodizing and rough up the interfaces.
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Old 26th January 2019, 07:47 PM   #1036
rock12 is offline rock12  United States
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Tried to use the whammy as a preamp for my pass f6 and one channel is much louder, but with headphones it sounds centered any ideas?
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Old 26th January 2019, 11:01 PM   #1037
6L6 is offline 6L6  United States
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How are you connecting the Whammy to the F6?
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Old 27th January 2019, 10:23 AM   #1038
rock12 is offline rock12  United States
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I connect to the whammy at the headphone jack that splits to 2 rca jacks. I have switched chords several times to make sure it is not the chords
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Old 27th January 2019, 10:27 AM   #1039
rock12 is offline rock12  United States
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Also the whammy is not in a case yet so the ground from the power inlet is not connected
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Old 27th January 2019, 12:24 PM   #1040
mjf is offline mjf  Austria
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I connect to the whammy at the headphone jack that splits to 2 rca jacks. I have switched chords several times to make sure it is not the chords
.......and have you tried to switch the channels R - L ?
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