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Author Topic: THEORY ON TUBE AMPS  (Read 12135 times)

Offline radimere

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THEORY ON TUBE AMPS
« Reply #25 on: June 09, 2006, 09:16:49 PM »
uy brand conscious............................................................ .....................

na gearhead............................................................. .............................

hehe  :roll:
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Offline renz_sui

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THEORY ON TUBE AMPS
« Reply #26 on: June 09, 2006, 09:42:11 PM »
Quote from: radimere
sa pagkakaalam ko sir e thousands of volts ang dumadaloy sa high-voltage circuits ng tube amp. kahit naka-avr ka, pag tumawid na ang kuryente sa circuit ground, direcho yan sa guitar cable mo, gitara, at finally sa katawan mo. mabreak man ng AVR o house circuit breaker ang kuryente, nakatawid na. nadale na ang puso mo at nervous system.

kung pwede lang gayahin yung ginagawa sa electric stove e (i-ground sa gripo), kaso pangit yatang maggitara sa kusina :mrgreen:


Sarcastic ba to? Di nga? Ganon ba kataas na DC volts ang kailangan ng tube? o diretso AC gamit nun?
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Offline chris_jean

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« Reply #27 on: June 10, 2006, 04:31:57 PM »
Quote from: renz_sui
Quote from: radimere
sa pagkakaalam ko sir e thousands of volts ang dumadaloy sa high-voltage circuits ng tube amp. kahit naka-avr ka, pag tumawid na ang kuryente sa circuit ground, direcho yan sa guitar cable mo, gitara, at finally sa katawan mo. mabreak man ng AVR o house circuit breaker ang kuryente, nakatawid na. nadale na ang puso mo at nervous system.

kung pwede lang gayahin yung ginagawa sa electric stove e (i-ground sa gripo), kaso pangit yatang maggitara sa kusina :mrgreen:


Sarcastic ba to? Di nga? Ganon ba kataas na DC volts ang kailangan ng tube? o diretso AC gamit nun?


OT(i dont know the answer to the original thread):one thing is for sure...a current  that leaks out has the potential to electrocute the user( seen this happen many times, some were fatal), This is where grounding comes in  , this the best form of protection (unless you wanna wear rubber gloves while playing :lol: ) from a  shock hazard if one of the mains or high voltage power supply wires contacts the chassis(then to the guitar cable then finally to U) due to some kind of fault.
Lucky for me I was able to install a 9 ft copper coated ground rod (P300 here in DAU), welded a thick copper wire  and istalled a three prong wall outlet( of kors .. use a multi-tester to check the continuity, then ur all set to rock!!! :D ) ... now I can play without worrying about being electrocuted from my PV delta blues. If you have a tube amp you should consider setting up one ,   your very own life may  depend upon it.
 :D
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Offline BAMF

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« Reply #28 on: June 11, 2006, 01:18:08 AM »
Over. Di naman thousands of volts.

A tube can operate on "starved plate" mode with as little as 12 Volts at the plate. Although in this operation, it doesnt really amplify, in fact the signal taken out of the tube is even weaker than the signal that came in...AND...wala kang headroom. Meaning, the signal will have distortion all the way.

Typical plate voltages are about 190V-350 volts. Tickle-tickle din but not as lethal as, say, a car's ignition coil.
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Offline radimere

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« Reply #29 on: June 11, 2006, 01:46:42 AM »
i apologize for the misleading info. i'll be sure to verify before posting next time.

thanks for the clarification, BAMF!
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Offline BAMF

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« Reply #30 on: June 11, 2006, 02:51:08 AM »
Suri din if that came out wrong :D . Na-shock lang ako hahehehe (pun intended)
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Offline emil_murillo

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« Reply #31 on: June 11, 2006, 10:17:12 AM »
So much should i ask for every hour of practice then........... for 2 guitar tube-amps and a 200 watts bass amp, etc, etc, ...........
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Offline stringman

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« Reply #32 on: June 11, 2006, 02:11:22 PM »
Dati may nasubukan akong Japanese tube amp called Stage King maganda ang tunog.
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Offline emil_murillo

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« Reply #33 on: June 12, 2006, 06:01:10 AM »
Ano ba mas maganda tunog............ German tubes or Japanese......
Yung Japanese Tubes sakin ok na eh................ ang ganda ng tunog.
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foxy lady

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« Reply #34 on: June 13, 2006, 06:04:59 AM »
Sovtek.
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Offline vinCe-uv7bk

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« Reply #35 on: June 13, 2006, 06:39:40 AM »
Electro Harmonix or JJ tubes.
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Offline rubis915

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Lethal....
« Reply #36 on: June 13, 2006, 09:07:41 AM »
Quote from: renz_sui
Quote from: radimere
sa pagkakaalam ko sir e thousands of volts ang dumadaloy sa high-voltage circuits ng tube amp. kahit naka-avr ka, pag tumawid na ang kuryente sa circuit ground, direcho yan sa guitar cable mo, gitara, at finally sa katawan mo. mabreak man ng AVR o house circuit breaker ang kuryente, nakatawid na. nadale na ang puso mo at nervous system.

kung pwede lang gayahin yung ginagawa sa electric stove e (i-ground sa gripo), kaso pangit yatang maggitara sa kusina :mrgreen:


Sarcastic ba to? Di nga? Ganon ba kataas na DC volts ang kailangan ng tube? o diretso AC gamit nun?


Tama yung sinabi ni BAMF up to 350V or higher..  but for me i think it is lethal... Lalo ng yung mga output tubes operating at 350VDC....  :D
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Offline BAMF

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« Reply #37 on: June 13, 2006, 12:53:16 PM »
You should try fixing a TV and getting tickled by the flyback hehehe. I did...still alive though. 33 Kilovolts :D
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Offline emil_murillo

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« Reply #38 on: June 14, 2006, 07:41:13 PM »
Yayks!................ ako naman nasunog ang kalahating kamay ko noon kakakalikot ng stereo.................... Hayun isang araw nakababad sa yelo yung kamay ko.................... Hindi ko pa alam noon ang first aid dun eh.............
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JEM hole

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« Reply #39 on: June 16, 2006, 08:08:16 AM »
Quote from: foxy lady
Sovtek.


May nabibilhan ba sa manila ng Svetlana.
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Offline emil_murillo

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« Reply #40 on: June 18, 2006, 07:39:48 AM »
Russian tubes yan ah..................
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Offline emil_murillo

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« Reply #41 on: June 21, 2006, 07:13:58 AM »
May nakita akong 6L6GC sa raon..................... But 'di ko nakita yung tatak................ Meron pala dito nun....... :?:
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Offline BAMF

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« Reply #42 on: June 21, 2006, 01:16:00 PM »
Mura lang yan, pero ingat ka.

Power tubes have to be MATCHED. Pag hindi...well...gagana pa din pero distorted ang magiging tunog mo kasi magiging asymmetrical ang daan ng kuryente sa top and bottom portions ng waveform (corresponding to the positive and negative swing na handle ng mga tubo). Thus kung dual tubes yan, dapat pareho ang transconductance characteristics nyan. And Deeco doesnt have the ability to match it for you.

Mapapamahal ka, pero the better bet is pumunta sa Phasetron Parksquare and order either a matched pair or matched quad ng tubes na kelangan mo.

National ang tatak ng 6L6 sa Deeco, made in Yugoslavia.
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Offline emil_murillo

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« Reply #43 on: June 22, 2006, 12:25:20 AM »
Try ko lang.............................. :)  :)
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Offline emil_murillo

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« Reply #44 on: June 23, 2006, 09:15:11 AM »
Quote from: BAMF
Mura lang yan, pero ingat ka.

Power tubes have to be MATCHED. Pag hindi...well...gagana pa din pero distorted ang magiging tunog mo kasi magiging asymmetrical ang daan ng kuryente sa top and bottom portions ng waveform (corresponding to the positive and negative swing na handle ng mga tubo). Thus kung dual tubes yan, dapat pareho ang transconductance characteristics nyan. And Deeco doesnt have the ability to match it for you.

Mapapamahal ka, pero the better bet is pumunta sa Phasetron Parksquare and order either a matched pair or matched quad ng tubes na kelangan mo.

National ang tatak ng 6L6 sa Deeco, made in Yugoslavia.



Baka gusto nila sila ang gagawa................... Modus Operandi yan ng mga electronic supplies dito samin yan................. Palaging wala silang stock ng piyesa............... tapos minsan iba ang ibibigay sa'yo para masira ang equipment mo tapos pagagawa m na lang sa kanila.................... Kaya hayun natuto akong mag DIY.................. Ha!
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Offline MIG AYESA

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« Reply #45 on: June 23, 2006, 12:07:57 PM »
Mga bro, I have read somewhere in this forum that the pre-amp tubes are more important than the power tubes.  
   
    Ano ba ang function ng power tubes?
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Offline vhunter

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« Reply #46 on: June 23, 2006, 03:14:26 PM »
Sir just my 2 cents... Preamp tubes shape your distortion but powertubes shape your overdrive. (does that make sense to you)... heheheh.

Anyway the way it works is yung powertubes are well ... poweramps... they drive the speaker.. so pag na ooverload yung poweramp ...it clips creating yung overdrive from the 50's to 70's. Then they introduced teh master volume which controlled teh power tubes so that you could drive the preamp tubes instead. This way you didnt have to drive the amp so loud to get that over drive... but the thing is iba yung voice nila. Anyway long short of it is, powertubes are the over all voice of your amp... it may break up sooner or later in the power cycle but its the raw voice. The preamp naman controls your gain. So if you want a darker / brighter distortion ... you swap out tubes in the v1 and v2 position. of course the combination of both are important... but preamp tubes hardly affect your clean tone .. vs power that affect both clean and dirty but is more pronounced at higher volumes.

daming sinabi... lol ... i hope i helped
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Offline emil_murillo

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« Reply #47 on: June 24, 2006, 06:58:22 AM »
Question!............ Teacher!.........

One good example of a "Pre-amp"..............
And another of a "Power-amp"..............
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Offline BAMF

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« Reply #48 on: June 24, 2006, 02:10:34 PM »
Preamp ! The first two "small" tubes of your guitar tube amp.

Power amp ! The last two or four "large" tubes of your guitar tube amp.
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Offline emil_murillo

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« Reply #49 on: June 25, 2006, 07:15:15 AM »
Quote from: BAMF
Preamp ! The first two "small" tubes of your guitar tube amp.

Power amp ! The last two or four "large" tubes of your guitar tube amp.


Does it always come in pairs sir :?:
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