Go Back   Home > Forums > >

Pass Labs This forum is dedicated to Pass Labs discussion.

"WHAMMY" Pass DIY headphone amp guide
"WHAMMY" Pass DIY headphone amp guide
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools
Old 11th April 2021, 02:50 PM   #3611
gervenja is offline gervenja  Netherlands
diyAudio Member
gervenja's Avatar
Join Date: May 2008
Location: Den Haag
Default my first whammy

It has been some time sines I have ordered the PCB, dec2019. But I have begone with the build of my whammy. The reading of the complete thread took some day's and is fun to read, but building is more fun.
I have chosen for the led configuration.
The bulk of the component are from Mouser, the rest are from DigiKey.
The transformer I bought is the Talema 22V, after reading about a lot of problems with high voltage and temperature I was doubting this choice.
First measurement's on my board 16.65V and -16.75V HAPPY day's
The regulators I used are from ON Semiconductor
Attached Images
File Type: jpg 20201219_160146.jpg (998.1 KB, 114 views)
  Reply With Quote
Old 11th April 2021, 03:24 PM   #3612
gervenja is offline gervenja  Netherlands
diyAudio Member
gervenja's Avatar
Join Date: May 2008
Location: Den Haag
First thing I noticed, it has been a while, that I need a magnifier these day's.
Last time was with melf resistors, SMD and it was obvious but now I cant do without.
I stuffed the compleet pcb and it looks all-right by me.
I did buy several OpAmps; RC4580IP, AD823ANZ
For now I will start with the RC4580IP.
For now I stop, tomorrow I'll do some controles.
And hopefully some music.
Attached Images
File Type: jpg 20210409_172120.jpg (984.4 KB, 103 views)
  Reply With Quote
Old Yesterday, 08:09 PM   #3613
funhouse61 is offline funhouse61  France
diyAudio Member
Join Date: Oct 2018
Default a helping hand for a beginner

Hello everyone. I admire all these whammys so I too would like to contribute to this big family. Only certain questions bother me.
i want to use it as headphone amplifier and preamplifier with class T power amplifier
Hifimediy T4 2x180W Class-T Tripath TK2050 Amplifier, Jantzen caps which already has a lot of horses under the hood the why of all these questions about power supply. My current installation consists of raspi + digione -} dac khadas -} buffer fx audio tube 01 -} t4 class T power amplifier and I have too much gain, the volume on the first notch is very difficult to adjust. I have already changed the potentiometer and rca attenuators with little results. So for my whammy I would like to change that and have more progressivity.
I would like to have the widest possible opamp compatibility with the power supply I would choose as I am a total beginner in DIY electronics and I don't really feel able to adjust it to suit it.
So if I have followed correctly (for now I am on page 323 of the wire and I intend to read it all the way) a 2 x 18v transformer would be best?
then with 15 v regulators and leds?
I apologize for these questions which may seem ridiculous but with the power supply for only one voltage there are a few possible variations and I don't really know which one to choose.
In addition, I received my pcb a short time ago and I can't wait to order the parts.
  Reply With Quote
Old Yesterday, 08:44 PM   #3614
gervenja is offline gervenja  Netherlands
diyAudio Member
gervenja's Avatar
Join Date: May 2008
Location: Den Haag
so I did my first listening session. And it was a pleasant surprise.
All the connections were professorial, no hum what so ever.
Just music.
I was surprised because it is not in an housing, just on an aluminium plate.
The music is from low to high nicely balanced.
Next on the list is the building of the housing.
  Reply With Quote
Old Yesterday, 09:22 PM   #3615
Swifty is offline Swifty  Netherlands
diyAudio Member
Join Date: Jun 2004
Location: Holland
Good job gervenja, enjoy your Whammy! Do post pictures of it when you've finished its enclosure! Will you build it from scratch?
  Reply to this post


"WHAMMY" Pass DIY headphone amp guideHide this!Advertise here!
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Nelson Pass "CSX1/2" "Buffered F6" Front End PCBs luvdunhill Swap Meet 9 19th October 2019 06:47 PM
Small midrange boost with conical "guide" suggestions? Phenoholic Anonymus Multi-Way 11 1st December 2014 12:00 PM
Which Pass Aleph diy board for "no-cost-object" headphone amplifier? Hammerklavier Headphone Systems 43 7th August 2010 03:35 PM
The "Dummies' Guide to getting parts/assembling CarlosFM's chipamp" Spasticteapot Chip Amps 19 18th March 2006 05:17 AM

New To Site? Need Help?

All times are GMT. The time now is 04:24 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio