Topic: My DIY Tube Project

[caloy de jesus]

Mga brod, may nabibile ba maayus na tube ampli sa Raon St , Quaipo? Thnaks   mga magkano kaya?

[edrel sison]

Mga brod, may nabibile ba maayus na tube ampli sa Raon St , Quaipo? Thnaks   mga magkano kaya?

if the reason you want to look for a tube amp in raon is that cheap cost. forget it. there are many sellers and builders here who can give more value to your first tube investment.

for example tony t can build you a very good tube amp for less.
if you want branded you may look for pre-owned cayins. you may also go to makati citi square basement and you'll find a lot of 2nd hand tube amps..assorted brands.

[docrob]

correct, the sakura hybrid vacuum tube amp at Raon is not truly a hybrid tube amp but rather an SS amp with tube buffers, the two small tubes (6N2) acts as cathode followers which gives it the tube sound

sabi nga ni sir Tony "for the tubes to have an impact they must be used as "common cathode" in the circuit for the 2nd harmonics to come out...

the effects of the visible glow of the tubes of the sakura is psychological.......for the technically challenged they will see this as a tube amp because of the tubes but this is not the "classic” tube amp

the chinese designed the tubes to be "eye candy" and make people believe the sakura to be a  tube amp...

if you want a tube sound, then get a real tube amplifier...."

i have the AV-400 model, a bit different from the Sakura but still not a true tube amp but am very happy with it considering i got it dirt cheap and had sir Tony done some preventive mods to it

tanggap ko rin na hindi sya talaga "de tubo" pero maganda ang tunog sa pandinig ko at yun ang importante

if you want a real tube amp i believe sir Tony can sell  you a complete kit ikaw na lang magbubuo if you have the skills or wants DiY, contact him na lang for details

sorry sa OT mga sir and TS

[Tsnad]

 mga brader, planning to have a tube amp ano po ba dapat gawin diy o bili na lang cayin or dared mp or other brand na di masyado masakit sa bulsa, btw first tube amp po pala.... balak pa lang po at nag iipon ng konti... mas mainam po ba yari or diy ni sir tony/jdlabs any suggestion is highly appreciated... thanks po....

[s2kov]

bro,

suggest ko lng ask mo tony to audition his diy amp and decide if it meets your need.

mga brader, planning to have a tube amp ano po ba dapat gawin diy o bili na lang cayin or dared mp or other brand na di masyado masakit sa bulsa, btw first tube amp po pala.... balak pa lang po at nag iipon ng konti... mas mainam po ba yari or diy ni sir tony/jdlabs any suggestion is highly appreciated... thanks po....

[Tsnad]

sir, thanks pm ko sir tony regarding sa plano ko..... isa pa pong tanong ano po ba una speaker o tube amp....

[meat_eater]

sir, thanks pm ko sir tony regarding sa plano ko..... isa pa pong tanong ano po ba una speaker o tube amp....

kung ano wala ka

If you have both, other than an upgrade, I see no point in getting another set

[Tsnad]

kung ano wala ka

If you have both, other than an upgrade, I see no point in getting another set

correct ka sir, merun naman ako speaker kaya lang baka di match anyway plan pa lng naman at masusing
pinag aaralan pa.....

[meat_eater]

correct ka sir, merun naman ako speaker kaya lang baka di match anyway plan pa lng naman at masusing
pinag aaralan pa.....

there is only one way to find out.... Bring your speakers for an audi

The path to audio nirvana is not an easy path, nor is it cheap, but once you get what you want, that's repeatable euphoria IMO.

How you get your "nirvana" will be unique to you alone, as it is for everyone.

Experimenting is part of that journey. Good luck sir

[edwin]

there is only one way to find out.... Bring your speakers for an audi

The path to audio nirvana is not an easy path, nor is it cheap, but once you get what you want, that's repeatable euphoria IMO.

How you get your "nirvana" will be unique to you alone, as it is for everyone.

Experimenting is part of that journey. Good luck sir

I agree with you. This is a journey na along the way, marami kang matututunan until you get the system that you prefer.

My advice is to listen to as much system as you can to know the sound that you like, then listen to your system and know it by heart. By doing this, you will be able to know the weakness of your own system and slowly conquer them.

[s2kov]

Recent build for my friend in singapore based on ST-70 design..

Chassis with the template:




Driver board with all parts soldered:




Bias circuit:

[s2kov]

[s2kov]

Thanks for looking...

[edboy7]

ganda nyan Doy ha...hehehehe

[s2kov]

300B gusto mo?!

ganda nyan Doy ha...hehehehe

[rony]

ayus yan andy! Kapal ng kaha.

[ATJr.]

me kasunod pa yan......

[edboy7]

300B gusto mo?!

sige....pahiram muna para makaranas naman ng tubo hehehehehe

[s2kov]

rony,

sa susunod manipis kaha pero makapal tumunog!

ayus yan andy! Kapal ng kaha.

[s2kov]

Recent built based on JE Labs 300B deluxe edition...

Parts used for this project:
- Power Tranny (from Edrel)
- James OPT 6123HS (from an old sunaudio 2a3 diy amp)
- James Choke JS-10-250S (from an old sunaudio 2a3 diy amp)
- Shizuki Oil Filled Capacitor (for psu)
- Mundorf Silver Oil Capacitor (for coupling)
- Nichicon Muse Capacitor (for cathode bypass)
- Kiwame/Riken Resistors
- 300B Full Music Anode Mesh Plate
- RCA 6SN7 Driver Tube
- Sylvania 76 Driver Tube
- RCA 5U4G Rectifier Tube

[s2kov]

Template of chassis top plate:




Aluminum plate & L-Section:

[s2kov]

Trim the edges to correct size:




Marking for the holes:

[s2kov]

[s2kov]

Done on drilling the top plate and L-Section:

[s2kov]

First round of aluminum sanding:

[s2kov]

With mounted transformers and sockets:

[s2kov]

Under the hood:

[s2kov]

Ready for testing:




Dummy load and shorting plugs to be used:

[s2kov]

Ripple voltage measured at 3mV:

[s2kov]

Done and it's now playing good music..
















Thanks for looking...