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Old 6th June 2021, 09:55 PM   #61
tron_ic is offline tron_ic  Switzerland
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Good morning all,

My name is Tony and I am a craftsman from Switzerland. I am above all a passionate music lover and also a designer. This gives me the opportunity to express and share my design philosophy through my creations and / or my devices.

For listening with headphones I made 2 devices that I present to you here: The first one that the EC99 is part of the OTA range

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Détails : Amplificateur casque SE 99

greeting

Last edited by tron_ic; 6th June 2021 at 10:00 PM.
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Old 12th June 2021, 09:16 PM   #62
xrk971 is offline xrk971  United States
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Nice work, Tron! Can you drive 32ohm headphones with it and what is max power?
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Old 13th June 2021, 10:09 AM   #63
tron_ic is offline tron_ic  Switzerland
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Hello,

Quote:
Originally Posted by xrk971 View Post
Nice work, Tron! Can you drive 32ohm headphones with it and what is max power?
Thank you for the compliment and for answering your question ...

Absolutely yes.

The Lundhal output transformer used has a specific winding with a 12: 1 ratio in order to connect hall standard 32R headphone to it.

This same transformer also has two other dedicated windings to connect an impedance and / or headphones of 150R or even 600R.

As you can imagine the lundhal is an important and high quality component. However, with this device I offer the possibility of using other transformers at a lower cost.

See the list of options. For info, I offer excellent Asian transformer with Amorphous core.

greetings. Tony
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Old 13th June 2021, 10:58 AM   #64
Lampie519 is offline Lampie519  Netherlands
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"I offer excellent Asian transformer with Amorphous core"

Do you offer them as spare parts for other DIY'ers?

If not then your amp should be moved to the "Commercial/trading" thread and not presented here...
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Old 13th June 2021, 04:50 PM   #65
tron_ic is offline tron_ic  Switzerland
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Hello Franck,

Quote:
Originally Posted by Lampie519 View Post
"I offer excellent Asian transformer with Amorphous core"

Do you offer them as spare parts for other DIY'ers ?
Yes I can. However, For reasons of cost and shipping costs I only do it for the European Union.

Quote:
Originally Posted by Lampie519 View Post
If not then your amp should be moved to the "Commercial/trading" thread and not presented here...
I just wanted to show what I do and how.

If you wish, you can consult and discuss in my dedicated thread here:
New e-shop for DIY and electronic tube made in Switzerland
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Old 13th June 2021, 07:17 PM   #66
Lampie519 is offline Lampie519  Netherlands
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Hello Tony,


Thanks for sharing .... very nice build i must say...

Best wishes,

Frank
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Old 16th June 2021, 09:41 PM   #67
Malvin is online now Malvin  United States
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Default My beta22

Built my beta22 years ago. Enclosure is home made with aluminum sheets and mahogany sides.
Attached Images
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File Type: jpg PXL_20210612_174655536.jpg (160.1 KB, 57 views)
File Type: jpg PXL_20210612_173917262.jpg (120.8 KB, 36 views)

Last edited by Malvin; 16th June 2021 at 09:46 PM.
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