Author Topic: Vacuum tube amplifiers (Read 55806 times)

fantom_mayonaise · « **Reply #1700 on:** June 22, 2012, 01:03:36 PM »

Sana may ganyan din ako. Pero di ko masyadong gagamitin. Conversation piece lang sya

Tapos papakinggan once in a while

Philippine Electronics Forum · « **Reply #1700 on:** June 22, 2012, 01:03:36 PM »

AT ALPHA · « **Reply #1701 on:** June 22, 2012, 04:31:50 PM »

ask and it shall be given to you, seek and you shall find...

Philippine Electronics Forum · « **Reply #1701 on:** June 22, 2012, 04:31:50 PM »

ricdelros · « **Reply #1702 on:** June 22, 2012, 05:31:13 PM »

Quote from: AT ALPHA on June 22, 2012, 04:31:50 PM

ask and it shall be given to you, seek and you shall find...

Yes, that's true...Just found transformer cores in junk shop..no space for the choke.

Philippine Electronics Forum · « **Reply #1702 on:** June 22, 2012, 05:31:13 PM »

mund24 · « **Reply #1703 on:** June 22, 2012, 07:02:39 PM »

Quote from: AT ALPHA on June 22, 2012, 04:31:50 PM

ask and it shall be given to you, seek and you shall find...

i concur too

@ricdelros

sir looks CD/DVD player ata yang tube amp case mo ah?

Philippine Electronics Forum · « **Reply #1703 on:** June 22, 2012, 07:02:39 PM »

badongsky · « **Reply #1704 on:** June 22, 2012, 07:16:28 PM »

ang gaganda ng mga projects

subscribed!

plus 1 sa inyo

Philippine Electronics Forum · « **Reply #1704 on:** June 22, 2012, 07:16:28 PM »

efren · « **Reply #1705 on:** June 22, 2012, 07:51:40 PM »

Quote from: fantom_mayonaise on June 22, 2012, 01:03:36 PM

Sana may ganyan din ako. Pero di ko masyadong gagamitin. Conversation piece lang sya Tapos papakinggan once in a while

i doubt it, ganyan din katwiran ko noon, it tuns out i listened to the tube amp more often...

looking straight out of a sci-fi movie

Single ended amp from planet X, awesome! +1

efren · « **Reply #1706 on:** June 22, 2012, 08:01:07 PM »

Quote from: AT ALPHA on June 22, 2012, 04:31:50 PM

ask and it shall be given to you, seek and you shall find...

Amen

ricdelros · « **Reply #1707 on:** June 22, 2012, 08:28:26 PM »

I'm trying to immitate Audio Note's Evergreen model "ONGAKU" ...The Ongaku is the Most Famous ,Best-reviewed amplifier in history and has been declared the "Best amplifier in the world" and it's the World's most expensive Stereo Components (P3.4million)...The only non-perfect aspect of the ONGAKU is that, we could not afford it!..This is the amplifier that inspired the worldwide Single-Ended Movement.

A legendary 27-watt power amplifier uses a single-ended triode, hand crafted by Hiroyasu Kondo,who uses 20 pounds of silver throughout the amp, including silver wire in the windings of the hand-made transformers.

At least kahit man lamang sa pangarap makita mo na it appears like, or it resembles the style..Kondo uses 211 Transmitter Tube pero wala ako nun. Maybe a little tweak will do for EIMAC 3-500z tube ang using all local parts from my workshop...I made it on the hard bottom chassis of HUG DVD.

mund24 · « **Reply #1708 on:** June 22, 2012, 08:56:51 PM »

Quote from: ricdelros on June 22, 2012, 08:28:26 PM

I'm trying to immitate Audio Note's Evergreen model "ONGAKU" ...The Ongaku is the Most Famous ,Best-reviewed amplifier in history and has been declared the "Best amplifier in the world" and it's the World's most expensive Stereo Components (P3.4million)...The only non-perfect aspect of the ONGAKU is that, we could not afford it!..This is the amplifier that inspired the worldwide Single-Ended Movement.

A legendary 27-watt power amplifier uses a single-ended triode, hand crafted by Hiroyasu Kondo,who uses 20 pounds of silver throughout the amp, including silver wire in the windings of the hand-made transformers.

At least kahit man lamang sa pangarap makita mo na it appears like, or it resembles the style..Kondo uses 211 Transmitter Tube pero wala ako nun. Maybe a little tweak will do for EIMAC 3-500z tube ang using all local parts from my workshop...I made it on the hard bottom chassis of HUG DVD.

goodluck sir

aabangan ko yang tube amp mo, looks ako pa ata ang naeexcite hehe

tony · « **Reply #1709 on:** June 23, 2012, 07:28:08 AM »

@ric, tubes those big will require forced air cooling....ang challenge jan besides the high plate voltages is keeping the tube pins and plate caps cool.....sockets can be found here: http://www.ebay.com/itm/NEW-SUPER-Ceramic-Tube-Sockets-3-500Z-3-500-4-400-/390332489036?pt=US_Radio_Comm_Tubes&hash=item5ae1a11d4c#ht_3592wt_1187

ricdelros · « **Reply #1710 on:** June 23, 2012, 10:27:30 AM »

Heat of the tube is above boiling point, forced air ko talaga 'to..If the big tube doesnt work, no problem, I'll look for 211 (I'm just playing)..Hindi ko na inabot yung Socket sa junk shop, isinakay na sa truck (ceramic pa naman,sayang!).. Anyway, nandyan naman si McGyver..handmade can do.

tony · « **Reply #1711 on:** June 23, 2012, 10:47:54 AM »

Quote from: ricdelros on June 23, 2012, 10:27:30 AM

Heat of the tube is above boiling point, forced air ko talaga 'to..If the big tube doesnt work, no problem, I'll look for 211 (I'm just playing)..Hindi ko na inabot yung Socket sa junk shop, isinakay na sa truck (ceramic pa naman,sayang!).. Anyway, nandyan naman si McGyver..handmade can do.

200*C for plate seals and pins.....datasheet here: http://www.hamanuals.com/MMans/3-500z.pdf

efren · « **Reply #1712 on:** June 23, 2012, 12:16:21 PM »

14.5A heater current @ 4kV max plate volts, i don't think that DVD chassis is up to the task to handle the weight alone, two tubes will require at least 30A heater windings on a traffo to warm up that monster plus 1KV @ 2A to provide the HT for "audio duty", i can't imagine the size of the traffo, perhaps the size of an average welding machine

Very interesting project, or should i say DIY to the extreme, i wouldn't go too close to that amp while in operation, hanggang 400V@ 100mA palang nagagawa kong power supply

ricdelros · « **Reply #1713 on:** June 23, 2012, 01:04:18 PM »

Here is the Original "ONGAKU" worth P3.4 million @ 27watts SE...Its Gold color but real life Silver inside..

badongsky · « **Reply #1714 on:** June 23, 2012, 06:03:42 PM »

grabe, this i wanna hear and see in person

very nice project, sir

AT ALPHA · « **Reply #1715 on:** June 24, 2012, 11:29:07 AM »

i had the chance to visit tony yesterday to bring in the 2 full carton tube stash. bouy his house is so adorned by tube amps left and right. i am pretty sure tony has something for us in the coming days or months. with those stash of tubes in his hands he probably wont be able to find a lot of rest in a very long while:D

i then went to raon and catched some old reliable alps dual log potentiometer at a very bargain price. another bonus was catching some bourns ten turns 10 and 20K trimpots.

saturday's traffic was bad but not so as my trip afterall..

tony · « **Reply #1716 on:** June 24, 2012, 11:57:33 AM »

i am still sorting out tubes per category, off hand is see at least 20pcs, 6005, 6aq5, 6ar5, and 6as5 7pin pentodes good for 5 watts pushpull or at least 1 watt single ended....then i sorted 10pcs of 6av6 single triodes for driver/preamps.....

more to come in the following days....

the tubes i liked the most were the 2 6HF5's, now my stash is around 10 i can start making power amps out of them, i also got 2 pcs 40KG6 power tubes, plate is about the same size as a kt-120...

edrel, yung bang alps pots yung sa electromark? mahal kasi sa electromark....meron pa ba akong aabutan bukas?

dapat pala nakaorder ng mga 7pin sockets kay clark ano?

AT ALPHA · « **Reply #1717 on:** June 24, 2012, 02:34:41 PM »

tony no worries i have enough 7 pin sockets for those mini peanuts.
i only got 2 pcs of the 50K alps, i think they have been lying there for a while and no one got them. no not from electromark. they do not have anything bargain for sale yesterday. the bourns were from the sidewalk..

tony · « **Reply #1718 on:** June 24, 2012, 04:47:24 PM »

4-65 beam power tube:

6dq6 beside the 40kg6 for size comparison:

6005, 6aq5, 6ar5, 6as5 beam power tubes:

octals:

voltage regulators:

small signal pentodes:

ricdelros · « **Reply #1719 on:** June 24, 2012, 08:59:07 PM »

Wow!! Ang dami...Sir Tony paki post yung complete list.

Philippine Electronics Forum · « **Reply #1719 on:** June 24, 2012, 08:59:07 PM »

Author Topic: Vacuum tube amplifiers (Read 55806 times)

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