Help Needed for 0.1μF 100V Soldering on Mainline [resolved]

LouisQ · 1335

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Offline LouisQ

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Hello,

I am not sure I made the correct soldering.

On page 71&72 of the Mainline manual it says (ref. picture #1 att.) :

-"Bend the leads of a 0.1μF 100V capacitor close to the body of the capacitor. Attach and solder the leads to C4 and C5."

-"Bend the leads of a 0.1μF 100V capacitor close to the body of the capacitor. Attach and solder the leads to A4 and A5."

On both instances I soldered the two leads of the 0.1μF 100V to C4 and C5 / A4 and A5 respectively (ref. pictures #2, #3, #4, #5 #6 and #7 att.).

Was soldering all of them together the way to proceed?

Thank you in advance for the help.


Louis
« Last Edit: January 08, 2022, 02:37:19 PM by Paul Birkeland »



Offline Paul Birkeland

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Reply #1 on: December 21, 2021, 01:16:00 PM
Looks OK to me. You can power up the amp with the tubes in to be sure they glow if you'd like.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline LouisQ

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Reply #2 on: December 21, 2021, 01:42:14 PM
Thanks Paul,
I will try the tubes.
Much appreciated :)



Offline LouisQ

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Reply #3 on: January 06, 2022, 12:08:09 PM
Hey Paul,
A bit late to the party, but happy new year!
Just to inform you that my Mainline is completed and working properly: it sounds awesome!!
Quick question, there’s no noticeable gain/volume when I switch the impedance switch (HI/low), is that normal?
Thanks so much,



Offline Paul Birkeland

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Reply #4 on: January 06, 2022, 12:39:35 PM
There should be a change in volume, but it's not enormous.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline LouisQ

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Reply #5 on: January 06, 2022, 01:41:02 PM
There is no change in volume.
I tried with different headphones (HD800s, Focal Clear).
Would you have any thoughts?



Offline Paul Birkeland

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Reply #6 on: January 06, 2022, 03:35:16 PM
Can your multimeter resolve low AC voltages?  You can play a 60Hz tone into your Mainline and we can check that the output is changing a bit when you flip the switch by using your meter.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline LouisQ

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Reply #7 on: January 08, 2022, 02:36:41 PM
Hi Paul,

Indeed there's a slight difference, all good thank you.

Have a nice weekend :)