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Old 21st May 2010, 02:37 AM   #21
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Default Salas shunt (SSHV) for HQ-DHT amli

Hi all!
This image I was measure V-in and v-out SSHV for my amli.
My amli need 330V and 89 mA. I fix SSHV 110mA at 330v- Vout, V-in at 340V.
Use Mje 350!
You can see int the image!
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File Type: jpg Salas-and-HQ-DHT.jpg (264.5 KB, 780 views)
File Type: jpg In-side-QH-DHT.jpg (261.2 KB, 725 views)
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Last edited by quanghao; 21st May 2010 at 02:40 AM.
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Old 21st May 2010, 02:42 AM   #22
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and Rod Filament!
I use some fan chip for Heatsink
If use Heatsink 8-10W, no need fan!
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Old 18th July 2011, 06:42 PM   #23
suwaned is offline suwaned  Indonesia
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Hi,
I have made ​​Cleo 4.0 triodedick's preamp with tubes and D3A B406,
to run a power like that you created. (new planned and was gathering parts for it)
oh thank you for your information, I've ordered with Rod Coleman to supply filaments.
and I have difficulty in making the preamp Cleo 4.0 and I'm posting tube B 406 triode dick's cleo 4
how do you think the preamp cleo4.0. to drive the amp "amli"?
thank you
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Old 20th July 2011, 08:16 PM   #24
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Here is a rough schematic of my current amp - just tweaking it so values may change a little. Uses 26 > 46 > 300B. 10 watt resistor on 26 cathode needs to be the best wirewound and 40 to 50 watts. Very clean and clear - lots of low level detail. Comments most welcome!! Andy
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Old 21st July 2011, 11:41 AM   #25
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Here's a slightly clearer version. The grid stoppers should probably be less than 1K. Note there are two 156C Hammond plate chokes in series, wired out of phase. Both the 10 ohm cathode resistor and the negative side of the filament supply on the 26 go to ground. This is filament bias, for those unfamiliar with it. It needs a very clean supply, hence the choke input which is 280mH. The Lundahl LL1692A can be swapped for the much cheaper Hammond 126C with very good results. This makes the amp good value to build. The O-netics OPTs are level 1, and are strongly recommended over other alternatives. Again, good value. All the 47uF caps should be polypropylene, not electrolytics - motor run caps are a good value option.

Andy
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Last edited by andyjevans; 21st July 2011 at 11:49 AM.
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Old 9th November 2011, 02:23 AM   #26
suwaned is offline suwaned  Indonesia
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Thank you Quang hao , I'm trying to made like your scheme, this voice is amazing.
I have yet to encounter a hum.

Coleman thanks, I use your the filament supply for 26.( transformator Parmeko 6,3volt 5A)for others not yet because i have not transformator

Audio Bella thanks for support. (Vicor DC to DC and parts) Bella-Audio

This is still experimental but at the trial: this voice complete
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Last edited by suwaned; 9th November 2011 at 02:27 AM.
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Old 9th November 2011, 02:31 AM   #27
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Hi suwaned!

great, you have succeeded, congratulations!
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Old 9th November 2011, 02:41 AM   #28
suwaned is offline suwaned  Indonesia
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your the best
You really, really hot filament supply. I have not been able to use the Coleman DHT, because I do not have a transformer for 45-300B, due to large 5A.
I suggested with Bella audio for use Vicor "dc to dc" to 45. This is amazing. recommended
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Old 9th November 2011, 02:49 AM   #29
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Quote:
Originally Posted by suwaned View Post
your the best
You really, really hot filament supply. I have not been able to use the Coleman DHT, because I do not have a transformer for 45-300B, due to large 5A.
I suggested with Bella audio for use Vicor "dc to dc" to 45. This is amazing. recommended
oH!

And tube 26, what Filament did you use?

your Amplifier The gain is Ok??
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Old 9th November 2011, 02:54 AM   #30
suwaned is offline suwaned  Indonesia
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Quote:
Originally Posted by quanghao View Post
oH!

And tube 26, what Filament did you use?

your Amplifier The gain is Ok??
the filament supply for 26. i used coleman DHT. it is verry good, no hum and clear and silent.
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