Increasing the filter capacitance of the Schiit Midgard
Jan 9, 2024 at 3:17 PM Thread Starter Post #1 of 10

anorphirith

Head-Fier
Joined
Sep 18, 2012
Posts
96
Likes
74
I noticed the difference between the Midgard and other Schiit products is the ratio of filter capacitance to the power.
Jotunheim : 6w @32ohm | 65,000uF | 10,833uF per watt
Mjolnir : 2w @32ohm | 20,000uF | 10,000uF per watt
Lyr : 6w @32ohm | 55,000uF | 9166uF per watt
Asgard : 3.5w @32ohm | 20,000uF | 5714uF per watt
Magni : 2.5w @32ohm | 8,000uF | 3200uF per watt
Midgard : 4.8w @32ohm | 10,000uF | 2083uF per watt
They released the Midgard mostly as a proof of concept and kept it at a low price while using high grade components so it makes total sense.
I think the only thing the amp is missing is extra filter capacitance, 2 Midgard reviewers also mentioned it's missing oomf in the bass.
Any experts here have an idea of a direct replacement for the 2500uF capacitors without overloading the diodes, if it would also stress the 2A power-supply I'm guessing a 4A 14-16VAC upgrade could also go well with the upgrade ?
Cheers
 
Jan 20, 2024 at 1:29 AM Post #2 of 10
I ended up increasing the filter capacitors.
I kinda went overboard and quadrupled the capacitance to 44,000uF so 9166uF per watt
The amp sounds like it was “lazy” before. It’s now fuller, more distance between the instruments, and since everything extends the clarify has also improved. I’d say more articulate overall.
The only thing is that i can’t close the top case anymore 😂. I might have it laser cut so the caps stick out of it.
 
Jan 20, 2024 at 1:35 AM Post #3 of 10
IMG_1277.jpeg
IMG_1283.jpeg
 
Jan 20, 2024 at 11:11 AM Post #4 of 10
Very good!!
Did you do power supply heating tests and see if anything changed?

This mod could have been even better if it had used the Nichicon FW caps that are generally used to upgrade audio sources in DIY audio groups.

Congratulations on your project, I love those who make it happen and don't just sit idly by imagining what it would be like, you went there and did it, congratulations.

1705766682437.png
1705766896171.png
 
Jan 20, 2024 at 1:27 PM Post #6 of 10
Very good!!
Did you do power supply heating tests and see if anything changed?

This mod could have been even better if it had used the Nichicon FW caps that are generally used to upgrade audio sources in DIY audio groups.
Thank you!
I upgraded the power supply from 1.5 to 2.4amps.
the caps I chose have better specs and happened to be more expensive than the “audiophile” grade Nichicon
 
Last edited:
Jan 20, 2024 at 1:30 PM Post #7 of 10
Could they be laid down taking advantage of the long welding legs?
Normally, the long legs of the caps are used to weld them lying down when there is little space at the top.
they would not fit in the case laying down to the left, they could be raised and laid down to the right, but im afraid the length of the legs would add too much resistance in a circuit that wouldn’t account for that
 
Jan 20, 2024 at 2:29 PM Post #8 of 10
they would not fit in the case laying down to the left, they could be raised and laid down to the right, but im afraid the length of the legs would add too much resistance in a circuit that wouldn’t account for that
In any case, your work was very good, I like to see solutions like this, with little expense and good improvements without having to change the entire device.

Then post photos of the DIY solution you are going to do to close it, are you thinking of making holes on top, laser cut or something like the Xduoo, okay?

1705778931330.png
 

Users who are viewing this thread

Back
Top