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EL34 Baby Huey Amplifier
EL34 Baby Huey Amplifier
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Old 16th July 2019, 02:18 PM   #521
bandol83 is offline bandol83  France
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Join Date: Nov 2004
Location: near Bandol, French Riviera
Hello Prasi,

This is a good remark

Yes, the Power Supply MK2 could be a nice addition to the Group Buy, but 1 module is enough for a stereo set. It does not need to be produced in 2.4 mm thick and it is only 10 x 10 cm, therefor it should not cost a lot if people want to buy it at PCBWay or JLCPCB but to get everything together may be simpler

I will make a diagram of the wiring, this PCB has been optimized for the Toroidy 250 VA transformer...

Cheers,
Marc
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Old 16th July 2019, 03:33 PM   #522
bandol83 is offline bandol83  France
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Hi,

I made the wiring diagram (I am not a specialist of computer drawing ) and you will see that the wiring is straight forward compared to the previous version

Ciao,
Marc
Attached Images
File Type: png PCB Baby Huey MK2 power supply Rev 1.3.png (152.1 KB, 396 views)
File Type: jpg Power Supply Baby Huey MK2-3.JPG (426.9 KB, 350 views)
Attached Files
File Type: pdf Schema Baby Huey MK2 power supply Rev 1.3.pdf (153.1 KB, 80 views)
File Type: pdf Wiring diagram EL34 Baby Huey MK2.pdf (488.5 KB, 86 views)
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Old 16th July 2019, 09:17 PM   #523
potepuh is online now potepuh  Slovenia
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This is my first tube amp ever and I love it. Need to finish some minor details... Many thanks to Bandol83, gingertube, prasi...for their work and devotion

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Old 16th July 2019, 10:33 PM   #524
bbqrooster is offline bbqrooster  United States
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Hi Prasi,

My requirement for one set of EL34 BH Mk2 would include the PSU PCB as well. If you include 2 PSU PCB, that's fine too. I can use the extra one for the previous version of BH EL34. So please include that into the GB. Thanks.
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Old 17th July 2019, 01:56 AM   #525
prasi is offline prasi  India
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EL34 Baby Huey Amplifier
Quote:
Originally Posted by potepuh View Post
This is my first tube amp ever and I love it. Need to finish some minor details... Many thanks to Bandol83, gingertube, prasi...for their work and devotion

Photo Gallery
That's a terrific build, love the front panel and metal work... Congratulations potepuh!

Quote:
Originally Posted by bandol83 View Post
Hello Prasi,

This is a good remark <snip>
Hello Marc,
Ok. If you are ordering through pcbway, you can share the design there and create an order link so that with just a click, it would be possible for people to place the order for PSU PCBs

OR else

If all GB subscribers are agreeing , then I will produce the PSU PCBs also. I will then consider every GB subscription as 2 PCBs of MK2 and 1 PCB of PSU.

Regards
Prasi
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Old 17th July 2019, 09:07 AM   #526
bandol83 is offline bandol83  France
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Hi Ian,

I am a little surprised by your remark about the fact that no one offered you a set of boards for the EL34 Baby Huey ! About one year ago, I offered you a set of boards from the first GB and told you that the following GB were done by Prasi, but I didn't hear from you since that time ? I can still send you one spare set of the first GB if you want, or may be Prasi will be pleased to send you a set of the MK2 version offered by all DIYer's who are building this nice amplifier based on your design and thanks you for your good help

I have already send boards to several members who helped me on DIYaudio forum including Hugh Dean (AKSA), Prasi, Eric Fortier, Olivier (Project16), Philippe (pvphil), etc... I have no problem to do that, please send me your address by mail.

I send you also the latest revision of the Quad TENA / Baby Huey schematic since you helped me to make corrections on it. I have continued to check it since that time and will be testing it when I will have more free time. You can find the actual version in this post. I will probably replace the ECC82 by an ECC99 as suggested in your April 30, 2018 mail...

Cheers,
Marc
Attached Images
File Type: png PCB Quad EL34 TENA autobias.png (364.8 KB, 309 views)
Attached Files
File Type: pdf Schema Quad EL34 TENA autobias reversed.pdf (196.3 KB, 26 views)
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Old 17th July 2019, 09:16 AM   #527
bandol83 is offline bandol83  France
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Sorry, here are the latest version

Marc
Attached Images
File Type: jpg PCB Quad EL34 TENA autobias.jpg (975.0 KB, 320 views)
Attached Files
File Type: pdf Schema Quad EL34 TENA autobias reversed.pdf (197.8 KB, 58 views)
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Old 17th July 2019, 10:18 AM   #528
prasi is offline prasi  India
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EL34 Baby Huey Amplifier
Hello Ian,
Sorry, it never crossed my mind to include you in the GB as I thought you had the amp already done.
I do not have any PCBs from the earlier GB's.
I would be happy to gift you a pair of MK2 and PSU as posted by Marc. You will love the PCBs from India I am sure.
I am sure, everyone here is grateful for the contributions you made and the smiles it brought once they had it singing.
Regards
Prasi

P.S. Done! added your name in the list.
GB for Baby Huey PCB
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Last edited by prasi; 17th July 2019 at 10:27 AM.
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Old 20th July 2019, 06:53 AM   #529
gingertube is offline gingertube  Australia
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Marc,
Will try to make time to take another look the quad TENA autobias scheme.
Prasi,
Thanks, PM sent.
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Old 20th July 2019, 08:09 AM   #530
pvphil is offline pvphil  France
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Hello,

This little word just to say that my PP equipped with 6CA7 works perfectly for several months. It's totally silent, there is no hum, the dynamics at low volume is excellent.

When I turn up the volume it animates without difficulty the 30 cms of my JBL-L65 Jubal and the music is very beautiful. Many thanks to Marc, Ginger and Prasi for this great amp. The evolutions of the MK2 proposed by Marc will simplify the wiring and integrate the filtering modification of the HT (see my post # 291). It's a very good thing.

This Baby amplifier is a total success. It will stay in my main set surely for a long time.

Have a good day,
Attached Images
File Type: jpg Ampli et pré Phil 1.jpg (203.1 KB, 239 views)
File Type: jpg ampli phil 2.jpg (142.4 KB, 95 views)
File Type: jpg ampli phil 1.jpg (171.3 KB, 93 views)

Last edited by pvphil; 20th July 2019 at 08:24 AM.
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