Author Topic: My Tube Journey  (Read 210380 times)

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Offline Tsnad

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Re: My Tube Journey
« Reply #180 on: May 02, 2014 at 05:18 PM »
merun pala special guest, yung bigtime andyan pala si Boss Randy... >:D >:D

Offline remington

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Re: My Tube Journey
« Reply #181 on: May 03, 2014 at 02:33 PM »
merun pala special guest, yung bigtime andyan pala si Boss Randy... >:D >:D
ganda nung dynaco st70 at pre amp nyang dala sir swabe ang tunog bagay sa AN hehe!
tube + audio nirvana = beyond...

Offline tony

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Re: My Tube Journey
« Reply #182 on: May 03, 2014 at 09:03 PM »
more pics of the May 1 Labor day mini EB to check out the  Audio Nirvana FR's..







how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline remington

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Re: My Tube Journey
« Reply #183 on: Jun 11, 2014 at 08:13 PM »
bagong luto....mainit-init pa from master tony's kitchen ;D

12J5 tube buffer ;)



in action...

« Last Edit: Jun 11, 2014 at 08:14 PM by remington »
tube + audio nirvana = beyond...

Offline tony

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Re: My Tube Journey
« Reply #184 on: Jun 12, 2014 at 01:48 PM »
Jun, naka move on ka na ba dito? :D



how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline remington

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Re: My Tube Journey
« Reply #185 on: Jun 12, 2014 at 03:53 PM »
ang ganda nyang 10Y pre amp ni sir larry (camotque) hinahanap ng tenga ko SQ nyan! Next project natin yan master hehe...congrats sir larry and nice meeting you! lalo sigurong maganda sa mga horns mo yan sir! ^-^
« Last Edit: Jun 13, 2014 at 09:33 AM by remington »
tube + audio nirvana = beyond...

Offline tony

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Re: My Tube Journey
« Reply #186 on: Jun 15, 2014 at 06:50 PM »
ang ganda nyang 10Y pre amp ni sir larry (camotque) hinahanap ng tenga ko SQ nyan! Next project natin yan master hehe...congrats sir larry and nice meeting you! lalo sigurong maganda sa mga horns mo yan sir! ^-^

i have the 1624, 30, 3Q5GT and other peanut tubes that are directly heated cathodes to try in a line amp, looking for a 26 tube....
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #187 on: Jun 19, 2014 at 07:57 AM »
now playing.....amp can still  use some tweaks...
EF86 buffered by 6N1P driving the 829b paralleled sections in triode mode






« Last Edit: Jun 19, 2014 at 08:03 AM by tony »
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline remington

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Re: My Tube Journey
« Reply #188 on: Jun 19, 2014 at 08:30 AM »
nice!!! ayan na :o :o :o!!!maririnig ko na din ;D ;D ;D
« Last Edit: Jun 19, 2014 at 08:30 AM by remington »
tube + audio nirvana = beyond...

Offline tony

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Re: My Tube Journey
« Reply #189 on: Jun 19, 2014 at 09:19 AM »
nice!!! ayan na :o :o :o!!!maririnig ko na din ;D ;D ;D

kailangan lang kaunting sunog-sunog pa.....by sunday siguro....pagtripan ko muna... >:D >:D >:D
pero yung can drop by to have a listen... ;)
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #190 on: Jul 03, 2014 at 05:11 PM »
12j5 tube rectified buffer....

those who want to build this, here is the schematic, took me 5 minutes to design...
i can say that the plate characteristics curve were spot on....
operating point is about 6mA at 150 volts plate..
the cathode resistor used 820 ohms, but values from 560 to 1k can be used...
btw, you can ask Edrel to make the power traffo for you, i will give him details
or if you want to wind it yourself, pm me for details...


« Last Edit: Jul 03, 2014 at 05:21 PM by tony »
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline CoolTOYZPH

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Re: My Tube Journey
« Reply #191 on: Jul 03, 2014 at 05:12 PM »
I hope someone can provide a youtube or illustrated link on how tubes make or produce sound. It is amazing how tube rolling can make a system sound completely different.
Where is the Love? BEP

Offline rochie

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Re: My Tube Journey
« Reply #192 on: Jul 03, 2014 at 05:59 PM »
12j5 tube rectified buffer....

those who want to build this, here is the schematic, took me 5 minutes to design...
i can say that the plate characteristics curve were spot on....
operating point is about 6mA at 150 volts plate..
the cathode resistor used 820 ohms, but values from 560 to 1k can be used...
btw, you can ask Edrel to make the power traffo for you, i will give him details
or if you want to wind it yourself, pm me for details...




ayos sir Tony, magandang project to interesado ako dito,mga magkano kaya aabutin ng transformer nito kay sir Edrel?baka pwedeng maka purchase sa inyo sir Tony ng mga tubes nito tsaka pati yung case na din?

Offline tony

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Re: My Tube Journey
« Reply #193 on: Jul 03, 2014 at 06:04 PM »
merong 12J5 kay Gerry Sta. Maria...
pm mo na lang si Edrel for the traffo...
kung hindi after sa looks, meron akong isang traffo dito...
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline rochie

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Re: My Tube Journey
« Reply #194 on: Jul 03, 2014 at 06:22 PM »
merong 12J5 kay Gerry Sta. Maria...
pm mo na lang si Edrel for the traffo...
kung hindi after sa looks, meron akong isang traffo dito...
not after the looks sir Tony, importante is function muna :) pabulong ako sir kung magkano yung traffo.

Offline tony

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Re: My Tube Journey
« Reply #195 on: Jul 03, 2014 at 06:47 PM »
not after the looks sir Tony, importante is function muna :) pabulong ako sir kung magkano yung traffo.

had another look, but the spare one has no filament winding for tube rect, so pwede sya sa ss rect only, pm'ed you anyway...
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #196 on: Jul 03, 2014 at 06:58 PM »
the 12J5/6J5 btw is one half of 6SN7....
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Offline rochie

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Re: My Tube Journey
« Reply #197 on: Jul 03, 2014 at 09:25 PM »
had another look, but the spare one has no filament winding for tube rect, so pwede sya sa ss rect only, pm'ed you anyway...


cool so instead of tube rect papalitan ko lang sya ng solid state/bridge rectifier? so hindi na gagamit nung 5Y3 tube? sige Sir Tony reserve the traffo for me will schedule a pickup again sa inyo.

Offline tony

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Re: My Tube Journey
« Reply #198 on: Jul 04, 2014 at 07:09 AM »

cool so instead of tube rect papalitan ko lang sya ng solid state/bridge rectifier? so hindi na gagamit nung 5Y3 tube? sige Sir Tony reserve the traffo for me will schedule a pickup again sa inyo.

okidoki.... :D
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Offline tony

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Re: My Tube Journey
« Reply #199 on: Jul 19, 2014 at 11:03 AM »
Quote from: tony
now playing.....amp can still  use some tweaks...
EF86 buffered by 6N1P driving the 829b paralleled sections in triode mode



sad to say, this is a failed design, i can't find tubes that have sections that are equally matched,
and since the cathodes are common to both sections, they do not conduct equally so that
the resulting distortion is audible....i suppose i can tweak this by manipulating filament
voltage to get the transconductance equal on either side, but that will be too much hard work...
so i ditched the septar socket and put in an octal socket instead....
in came the 6AV5 horizontal output tube rated for 11 watts....but in this
amp it is running about 16 watts plate dissipation, 250volts plate at 60mA cathode,
does this ring a bell? yes, it does, it is the operating point for the 2A3....





the power factor of almost 90% and a power draw of about 80watts...
the power traffo is rated for 180VA, so that the power traffo will be
very cool to touch and will last a long long time....
the high power factor is indicative of a very good power supply...




for those interested to design their own SET,
this is how i sized the cathode bias resistor:
for triode mode, grid 1 bias is calculated as follows:
Vg = -(Vpx0.6)/mu
mu equals 4.5 and Vp is 250 volts,
so that Vg is 40volts,
looking for 60mA. Rk, the cathode resistor then becomes,
40/60 = 600ohms, this is achieved with a parallel combination of
1k and 1.5k 5 watt resistors, making for a 600 ohm 10 watt
cathode bias resistor....this resistor dissipates 2.4 watt
so that use of a 10 watt resistor is very much justified...

it would interest you to note the in the actual amplifier,
bias was at 39.5 volts, am i lucky or what?  ;)
« Last Edit: Jul 19, 2014 at 11:06 AM by tony »
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline dana

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Re: My Tube Journey
« Reply #200 on: Jul 19, 2014 at 08:23 PM »
papa tony,

6av5=12av5=2A3...same sonics? ;D

Offline tony

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Re: My Tube Journey
« Reply #201 on: Jul 20, 2014 at 07:48 AM »
papa tony,

6av5=12av5=2A3...same sonics? ;D


it's been a long time since is heard a 2A3 so kinda hard to say,
a side by side listening will tell since they have the same operating points,
therefore same power output....

btw, 4D32 tube was also considered since no change of sockets was needed,
but then the power traffo needed to be change due to higher
filament draw so i ditched that one too..
the 6AV5 was the best tube to use under the situation...

the 6AV5 can be rolled with the 6FW5 for stronger plate, or the 6AU5gt...
the compactron 6GV5 is the same tube except for the plate or anode cap...
« Last Edit: Jul 20, 2014 at 08:01 AM by tony »
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline CoolTOYZPH

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Re: My Tube Journey
« Reply #202 on: Jul 26, 2014 at 08:17 AM »
« Last Edit: Jul 26, 2014 at 08:30 AM by CoolTOYZ »
Where is the Love? BEP

Offline tony

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Re: My Tube Journey
« Reply #203 on: Jul 26, 2014 at 03:55 PM »
no tube journey can proceed without transformers,
this is an educational video about making transformers...

http://www.youtube.com/watch?v=s6NyTprQCBI

output and power transformer for a 4P1L parallel SET....



output and power transformer for 832b amp....




« Last Edit: Jul 26, 2014 at 03:55 PM by tony »
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Offline oweidah

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Re: My Tube Journey
« Reply #204 on: Aug 01, 2014 at 12:17 PM »
HBD idol !

Offline tony

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Re: My Tube Journey
« Reply #205 on: Aug 01, 2014 at 01:19 PM »
ssshhh......thanks, :D
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Offline dana

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Re: My Tube Journey
« Reply #206 on: Aug 01, 2014 at 02:25 PM »
HBD rin PAPY! :)

Offline tony

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Re: My Tube Journey
« Reply #207 on: Aug 01, 2014 at 06:00 PM »
thanks Don, parang nagka idea ako sa 5998 mo... :)
meron akong 6AS7 ST bottle tubes pwede kong ipalit sa 6AV5...
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Offline tony

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Re: My Tube Journey
« Reply #208 on: Aug 02, 2014 at 08:16 AM »
Don, you are welcome to have a listen at my 6AV5 SET, like the 2A3,
the 3 watt power can mislead you, sounds as loud as my 12EN6 14 watter pp amp and then some....:)
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Offline xbase

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Re: Re: My Tube Journey
« Reply #209 on: Aug 02, 2014 at 04:11 PM »


Don, you are welcome to have a listen at my 6AV5 SET, like the 2A3,
the 3 watt power can mislead you, sounds as loud as my 12EN6 14 watter pp amp and then some....:)

nakaka intriga ang 6AV5 na yan master tony...