I'll be building a Sunvalley 300B amp (their SV-S1616-D with Hashimoto output transformers). This is a new amp that will be released early September of 2021.
I'm going to build my own chassis and can make the width larger so I can then mount a choke on the exterior of the top plate along with the other transformers. The kit has a small choke mounted inside the amp. I'll be using a Hashimoto choke instead of the small choke that comes with the kit and now need to choose which Hashimoto choke. I found a schematic that shows this amp's circuit (attached in link below) and the only info for the choke value used is 4H.
I also own a Triode Labs EVO21 300B amp and found that they use the Hashimoto C-10-200W. That choke has an inductance value of 10H/2.5H.
The choke that I'm also considering for replacement of the kit's choke is the C-16-150W. That has an inductance of 16H/4H. The DC resistance is lower for the Triode choke and I'm trying to pick the best one for this Sunvalley circuit. I don't have the amp yet so can't measure the choke in their kit. However, the Hashimoto choke will probably be a better choice.
Would you choose the Hashimoto C-10-200W the same as Triode uses or the C-16-150W?
Here are the specs:
C-10-200W
Inductance: 10H / 2.5H
Rated DC Current: 200mA / 400mA
Max. DC Current: 250mA / 500mA
DC Resistance 140 / 35 Ohms
C-16-150W
Inductance: 16H / 4H
Rated DC Current: 150mA / 300mA
Max. DC Current: 180mA / 360mA
DC Resistance 200 / 50 Ohms
Which one would you pick?
Thanks for any help,
Richard
Here's the link to the schematic of this amp:
Sunvalley SV-S1616-D 300B Schematic
I'm going to build my own chassis and can make the width larger so I can then mount a choke on the exterior of the top plate along with the other transformers. The kit has a small choke mounted inside the amp. I'll be using a Hashimoto choke instead of the small choke that comes with the kit and now need to choose which Hashimoto choke. I found a schematic that shows this amp's circuit (attached in link below) and the only info for the choke value used is 4H.
I also own a Triode Labs EVO21 300B amp and found that they use the Hashimoto C-10-200W. That choke has an inductance value of 10H/2.5H.
The choke that I'm also considering for replacement of the kit's choke is the C-16-150W. That has an inductance of 16H/4H. The DC resistance is lower for the Triode choke and I'm trying to pick the best one for this Sunvalley circuit. I don't have the amp yet so can't measure the choke in their kit. However, the Hashimoto choke will probably be a better choice.
Would you choose the Hashimoto C-10-200W the same as Triode uses or the C-16-150W?
Here are the specs:
C-10-200W
Inductance: 10H / 2.5H
Rated DC Current: 200mA / 400mA
Max. DC Current: 250mA / 500mA
DC Resistance 140 / 35 Ohms
C-16-150W
Inductance: 16H / 4H
Rated DC Current: 150mA / 300mA
Max. DC Current: 180mA / 360mA
DC Resistance 200 / 50 Ohms
Which one would you pick?
Thanks for any help,
Richard
Here's the link to the schematic of this amp:
Sunvalley SV-S1616-D 300B Schematic
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Depends. How many milliamps are these circuits drawing under various loading conditions? Or is this really your question? I looked at the schematic and it appears to be a mono block, is that correct?
What is the VA tube? I don’t see it marked. But we could guess the 300B will probably draw <80 ma and the two front tubes <20ma. In a stereo amp, which is probably what you plan to build, I would pick the C-10-200W and wire it for 10H. Ideally I would use a more sophisticated power supply on my “ultimate” build, something like RCLCLC.
What is the VA tube? I don’t see it marked. But we could guess the 300B will probably draw <80 ma and the two front tubes <20ma. In a stereo amp, which is probably what you plan to build, I would pick the C-10-200W and wire it for 10H. Ideally I would use a more sophisticated power supply on my “ultimate” build, something like RCLCLC.
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