HQ-DHT (All tube DHT amli) 26-45-2A3

[quanghao]

Hi all!
When i finis some my pre use tube 6h30, i like some tube DHT for pre.
So i like design HQ-DHT use tube 26-45-2A3 or 300B.

1. I use filament design by Rod Rod Coleman I was success it.
Thank Rod Rod Coleman
http://www.diyaudio.com/forums/tubes-valves/151421-26-pre-amp-44.html
My am li was not hum not noise.

2. And supply HV design by janneman
Thank Jannemen
http://www.linearaudio.nl/t-reg-1.htm

3. Cricuit HQ-DHT (I thank the consultants of Andrea)
I have some reference in the following websites:
26 Menu
kennedy

I see although the circuit i use incorrect data tube, but it sounds fascinating. I love it.
the sound is magic

Hi all, with experience and use tube 26 and tube 45, you can suggest or share my experiences and run modes of tube! thanks

 

[quanghao]

some image of my amli

 

[quanghao]

and image in side

 

[quanghao]

and here is the schematic design by Andrea

 

[m461c14n]

very nice Quanghao......
How is the sound....

 

[quanghao]

very nice Quanghao......
How is the sound....

the soud is very very like, i love it,!
Thank you helping by Andrea !

 

[quanghao]

The special, my amli is not hum, not noise!

 

[quanghao]

and filament for my amli

 

[quanghao]

This is cricuit i use for filamentm design by Rod Coleman.

I spend 2 moths for some tube
I use for tube:
1. Tube 26 1.5V, 1.05 A
2. Tube 45 2.5 V 1.5A
3. Tube 6C4C 6.3V 1.05A.
4. Tube 300B 5V

the special it is no have noise and hum, i put may hand phone on the head tube 26, i can head some noise to speak!

I say it is wonderful, thank many many Rod Coleman!
Quanghao

 

[quanghao]

i use HV supply for hi voltage design by Jan Didden:
http://www.linearaudio.nl/t-reg-2.htm

 

[nicoch58]

very nice ,

for the filament you have some board ?

 

[neskor]

maybe some group buy for filament pcb?

 

[quanghao]

maybe some group buy for filament pcb?

i think it depend your like this design and the sound when you use this design for all DHT.

 

[neskor]

i think it depend your like this design and the sound when you use this design for all DHT.

we trust you

 

[nicoch58]

at last Rod

 

[Rod Coleman]

at last Rod

The group buy really needs the transistors as well as the PCB. Amp builders are having trouble getting the low-Vce Japanese transistors, and the MJ150xx are nowhere near as good.

Maybe it is time I offered a board & transistor kit, or maybe a basic module (no heatsink for easy shipping), tested.

Is there a need for something like this?

 

[mach1]

Rod,

I think a lot of members would be interested.

 

[quanghao]

tonight, i use Salas shunt for drive HQ-DHT, its is very good
V-in 340 v vout 320V, I = 76 mA, Load 26+45 = 55mA. the sound is very detail.
It is better, when i not use Salas.
Thank Salas again!
Quanghao

 

[nicoch58]

We know very well that Salas shunt sound good but the heat vs Rod ?
I need to power four 10Y .....

 

[quanghao]

We know very well that Salas shunt sound good but the heat vs Rod ?
I need to power four 10Y .....

This circuit is unique advantages:

1. great for all kinds of DHT tube (EX. tube 26 - no noise)

2. Better than AC filament

3. Special design ever

disadvantages:

1. Components not available

2. Heat, heat 2 to 8-10W for a burning heart