tony's 6LU8 push-pull power amp build

[n0th1n6]

6000+ na agad . Next year na ako sir tony hahaha. Pero pag may time po tawagan ko kayo para ma audition ko naman ang mga tube amps na iyan. Maraming salmat sa pagsi share...

[kulit06]

sir tony may nakita akong mga tubes sa ware house namin kanina,mga bnew,siguro matagal na doon yun kasi nahukay ko na sa alikbok,yung ilang units ay EL36 at EL34,yung iba ay GE at RCA.Bukas check ko lahat ng numbers.Pwede ba sa amp ang mga tubes na yun?

[boging]

malinis na pagkagawa. expert ka talaga sir tony. sana ako din may time ako gumawa ng tube amp.

[Mayalin22]

to all interested to build this amp....

these are the major parts i can provide:

1. 4 x 6LU8 tubes, 400@ = 1600
2. power transformer = 1500
3. 2 x output transformers = 1500@ = 3000
4. sockets for the 12pin compactron is purchased from china, not available locally.
5. chassis, you need to provide for yourself.....i can assist you with Peng at Unity Metals at T. Alonzo st...in binondo
6. the resistors and capacitors are available at Deeco....

if you are not yet turned off yet by the cost, i suggest that we do a group buy, the more members, maybe i can lower the cost even more....

count me in sis tony sa group buy

[jimsky143]

sir tony pwede ba iyan sa guitar?diba tube din gamit sa vintage amp like marshall?

[tony]

^pwede.....

[odie1427]

sir tony, Bka nman may circuit kau for EL-34 tube, gusto ko rin mag assemble. thanks:)

[tony]

sir tony, Bka nman may circuit kau for EL-34 tube, gusto ko rin mag assemble. thanks:)

here you go: http://www.google.com.ph/search?q=el34+schematics&hl=tl&biw=1280&bih=685&prmd=ivnsfd&source=lnms&tbm=isch&ei=yNBJTvKBD-nJmAWm7ZSSCA&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CBAQ_AUoAQ





http://www.alphalink.com.au/~cambie/EL34_cct.gif

[odie1427]

Thanks po sir Tony

[lovehack]

ah sir.. ano po ang impedance ng primary coil ng output transformer....?

[tony]

EL34's used 4.4K......

[lovehack]

ah ok salamat... sa info sir... your the man....

[Tukkar]

Sir tony nice compactrons.....pwede ba post schematics?

[tony]

Sir tony nice compactrons.....pwede ba post schematics?

[Tukkar]

Thanks sir tony....nakita ko na rin pala ito sa post mo sa kabila...me available ka png tubes nito? di ka ba nagbebenta ng tube at sockets nito?

[efren]

hmmmm, mas simple itong regulated screen grid supply instead implementing a series pass bjt regulator since naka cap multiplier naman ang main B+ it will provide more than enough (Pseudo) regulation, pwede na to sa 6p15p, a 140 or 150 V zener will do, what do you think sir tony? 

[tony]

Thanks sir tony....nakita ko na rin pala ito sa post mo sa kabila...me available ka png tubes nito? di ka ba nagbebenta ng tube at sockets nito?

merong tubes, kaya lang yung sockets paubos na....pwede ka mag order sa ebay kay zhangsheng sa china....

pasobrahan mo na para swap tayo ng tubes, marami akong stocks nung 6lu8...

[tony]

hmmmm, mas simple itong regulated screen grid supply instead implementing a series pass bjt regulator since naka cap multiplier naman ang main B+ it will provide more than enough (Pseudo) regulation, pwede na to sa 6p15p, a 140 or 150 V zener will do, what do you think sir tony? 

zener diodes nga ang ginamit ko para sa screens.....yung cap multipliers pang classA...sa classAB merong issues yan....

[Tukkar]

merong tubes, kaya lang yung sockets paubos na....pwede ka mag order sa ebay kay zhangsheng sa china....

pasobrahan mo na para swap tayo ng tubes, marami akong stocks nung 6lu8...

Sige sir on my next order ng isasama ko ito...12 pins sockets. inform kita once na nakakuha ako. awaiting pa ako sa mga inorder kungs 6P3s at 6p1P from russian store.

[Tukkar]

Sir tony meron pala akong 6F5P russian tube, 9 pins, triode pentode with 0.5w/9w anode dissipation... pwede ko ba magamit ito sa schema mo....

Ito yung specs:
Limited operating values:
Part                      Triode               Pentode
Filament voltage, V          5.7 to 7
Cathode – heater voltage, V              100
Bulb temperature, OC              220
Anode voltage, V                     250                  300
Pulse anode voltage, V                     2000
2nd grid voltage, V                                   250
Cathode current, mA         15                    75
Pulse cathode current, mA        200   
Anode dissipation, W         0.5                     9
2nd grid dissipation, W                        2
Resistance in grid circuit, MΩ  1 – fixed bias     3.3 - self-bias   
                                          1 – fixed bias     2.2 - self-bias