How to lean build up valve amplifier but this version is only spanish.

Driver is.It's call "Mr PERQUE(PERUKE)[ Mr Tetsu Kimura ]Drive" SRPP but use up side is triode and lower
side is penthode for get much more gain than general(triode) SRPP.
I like SRPP with Direct Heating Triode valuves amplifier like
2A3,45 and 300B Single Ended Amplifier.how about sound ?
sound is very clear but does not
enough to drive Triode tube.SRPP with penthode is good.what do you think ?

I like EL156 China sound. much power and sound is soft.one thing bias very low.
a half of KT88.so necesary to adjust grid bias.both way cathode resistance and
screen grid voltage.this time put 51V zenner into screen grid and connected SG Tap.
cathode resistance is around 250ohm.if can I get much higher plate voltages better.
EL156 original is very expensive in Japan.EL156 China is around USD $120dollers pair
in Japan.still expensive.but sound great than KT88.offcourse depend on Audio Transformer.
price.this time I used chaep Toeui OPT-20S Unversal Transformer.they said some copy of
ISO Tango U-808. sound is very modern sound.somethig like a 300B SET.
Power is 12.5 W rms and DF is 2.5 ,10Hz from to 90Khz within +- 1dB.sound very clear
and good for Jazz , specialy for female vocal is nice to sing song front of speaker.

If would like to use KT88/6550/EL34 please use cathode resistance are 390 ohm and
tap of transformer is 280V. 280 V will be get 370Volts for +B.same way you can listen
good sound from this amplifier.if use with 420V +B .you can get Max power is 14Wmax.
nominal power is 8.5W rms.EH 6550 with OPT-20S(UL)(Touei Trans) sound great and low range
is very nice attack and mid and high are so nice tone.some thing like 300B sound.
but feel much better power than 300B SE sound.felt very low distortion.I think
better than any kind of bunch of high price High End Amplifier.

EL34 made up around 8W . 6L6GC can do 6.5W . KT88/6550 UL can get 8W
12E1 can get around 8, EL156 UL can get around 10W .
so which is better ? , my experience said "fat valuves made" good bass.
but Low mew(u)and low internal resitanse Triode valuve made good bass too.this one is
DHT SE just same like sound I got from EL156 China Single Ended Amplifier.sound like
much powerfull and dinamic range are very nice.
base connection is same like a EL34 and 1-8 pin should be connected with some wire .
see next picture.

Filament voltage
UH …………………………6.3 V
IH…………………………1.9 A
Maximum rating
anode voltage……………………800 V
second grid voltage………………450 V
anode dissipation power………………50 W
second grid dissipation power…………8 W
cathode current……………………180 mA
voltage between heating and cathode
preset bias time……………………0.1 M
self-bias time………………………0.1 M
Capacitances
input capacitance……………………19 PF
output capacitance……………………7.5 PF
transconductance capacitances……………………0.5 PF
capacitance between grid No.1 and heater……0.25 PF
Static state parameters
Ua…………………………440 V
Ug2…………………………350 V
Rk…………………………150 ohm
Ia……………………………100 mA
Ig2…………………………16 mA
Gm…………………………11 mA/V
g1-g2……………………6.2

Recommended operating condition(suggested value)
Single-tube class A amplification
Ua(0)……………………300 450 V
Ug2………………………250 250 V
Rk…………………………60 90
Ia(0)……………………120 112 mA
Ia(max.sig)……………116 108 mA
Ig2………………………15 17 mA
Ig2(max.sig) …………24 27 mA
RL…………………………4 3.8 k
üg1………………………6 9.2 V
Pout……………………15 25 W
Dtot……………………8 9 %
Push pull AB1 amplification(preset bias)
Ua(b)……………………600 600 V
Ug2………………………300 350 V
Rk………………………160 200 ohm
Ia(0)……………………80 80 mA
Ia(max.sig)……………95 100 mA
Ig2 ……………………10 10.5 mA
Ig2(max.sig) …………18 20 mA
üg1………………………13.5 18.5 V
RL(a-a)……………………8.5 7.6 kohm
Pout………………………65 80 W
Dtot………………………4 4 %
from Shuguang ValveReal SpecEL156 China

2 Type of OPT-20S/20SR Toei Transformer.

6550/KT88________ Power 1W RMS 10Hz  to  90Khz -1dB
EL156 China______ Power 1W RMS 10Hz  to  90Khz -1dB

EL156 China is both of same power but feel more powerfull than KT88/6550.
EL156 need at least 400V B+. from 70mA to 75mA is more clear than large
current like over 100mA.Nominal UL power are 10 W both EL156 and KT88/6550 and
Max power are 13 W rms at 1Khz.
------------------------------
These kind of transformer are budget but pair of price is USD $320 dollers.
good charactor but not so cheap transformer.I like OPT-20S/OPT-20SR by Toei.

Just show you all picture up Date 18th Apr 2009

EL156/6550/KT88 "GEN" Single Ended Amplifier

Gen : Means "String"in English and "Cuerdas" in Spanish so this amplifier Gen
getting good sound from mostly Cello and Violin and all kind of Strings.Piano too.

This time I'am using Noguch Transformer CO's PMF-20W Audio universal Transformer
.just same like OPT-20SR( Touei Transformer).they are same charactor of U-808
ISO Tango.price and charactor are just like same.but U-808 use gap Transformer.
Noguchi PFM-20W is 3rd time use for my Amplifier.one of 300B SRPP SE and SV811-3
SE Amplifier.
PMF-20W is nice Transformer when I used be use for 300B Amplifier but this time
I used for 6550 SE. does not get good response.OPT-20S is better than PMF-20W.
low edge side is more natural I got from OPT-20S(Touei).mfg spec said PMF-20W is
better than OPT-20S. but OPT-20S is better sound I got with Power Pentodo.

with out KNB EL156 SE Amplifier

Final circuit for EL156 Single Ended Aplifier update 11st May 2009

EL156/6550 Single Ended Amplifier Name is Gen V2

But I Like Sound of KT88/6550 Single Ended Amplifier.UL and Triode mode are
better than EL156 SE. I think better than 300B for cost(C/P).I like 300B/2A3 SE
but we can get 6550/KT88 are easly to get one of poket maney than 300B.
UL KT88 can get 12W rms.8W rms at triode mode.300B is very diffcult to get 10W rms.
UL KT88/6550 Sound very clear and powerfull.I guess got very nice tone than 300B SE.
DHT 300B SE is good amplifier and get more musical sound when any one used good
Audio Transformer like a ISO Tango XE-20S or Tamura's. U 808 and XE-20S are same
famliy of Audio Transformer.just like same charactor has each other.

Better sound get from Triode connection EL156 SE on 16th May 2009.

Go to the vinil of world DIY RIAA

This RIAA using LCR, uploaded by Mr Victor Serrano in Germany

All of Amplifier are made by Mizushima Japan

EH KT90 originaly KT90 is EI

Left side is GE 6L6 ,closely Center is EH KT90 and Right side is China EL156
sound is very different each other.KT90 is sound like KT88.not interchangeable.

I will try to use KT90, KT90 is origialy from EI but EI was lay down long time ago and
very difficult get one from EI KT90.now avairable from EH . original valve is PL509 for Sweep tube for color
TV and top plate.JJ has PL509 new type. but modificated without top plate.so slim valve new PL509 on 2007.

EH KT90 Plate size is just same size EL156 China.very slim skiny.I will try to use KT90 now.some one said
KT90 is same tube as KT88.but plate size is slightly big than KT88's and disspation power has 50W.
I am going use KT90 now and wait for while.


important: KT90 can not replace for KT88 and 6550. some exsample said Triode Connection and +B is 300V
Bias is around 40V so very different with KT88.few amplifier use 2.5Kohm and plate current are appx 80mA~
at 300V.
but KT88 are around 3.5K ohm and 80mA at 390V. compatible amplifier is difficult to use. at plate voltage ,I have 405V same voltages when use KT88/6550.no need value for bias.slightly up drowing
than KT88.81mA with 390 ohm 10W.voltages at cathode is 32V.sound is very clear and low edege is very clear
sound just same like KT88 but feel like more power.mid and high are some tone like KT88SE. schematic diagram
is same.then 2 components are replaced.now I got 93mA and +B is 394V.29V at cathode voltage.a little soft than
before.sound of 80mA like metalic so now better than before.few days later replaced driver from 6U8 to 6AN8.
load impedance is 2.5K ohm.this time use Audio Transformer are OPT-20S Toei.Power Transformer is MX205 Tango.

Driver is replaced from 6AN8A to 6F1P russian NOS.this is MIL Spec tubes.6AN8A is good tubes but expensive
and very difficult to get good one now.

KT90 UL Single Ended Amplifier

Drived by 6AN8A more musical for KT90 Single Ended Amplifier

KT90 XE20S Tango Single Ended Amplifier on 20th May 2010

please see tech note on schematic diagram next.this circuit can be use for 2A3 and 300B too
only few position of circuit need to change and add.KT88 cathode resistance is 390 ohm and KT90 and EL156 China
are same value 310 ohm 10W.Plate voltage is 390V when use KT88 and 400 V for KT90 and EL156 China.
Rectifire valve is 5U4G or 5R4G and 274B .don't use GZ34 and 5AR4 indirect heating valves.
pin 1 and pin 8 of V3 are connected with wire on the octal US base.if does not connected each other will be get damege
final valves when use EL156 China.you can use KT66 Super China and KT90 China instead of EL156 china. 3 valves are
same valves.EL156 China is very good tube ,very sweet and Good Bass.only one problem is quality of material
of Base.will be change color of Base by high temprature.
V2 SRPP Driver can be use low mew u triode and penthode combination valves like 6LB8, 6U8 , ECF80, E80CF ,7199 and 6F1P
instead of 6AN8 and 6AN8A.those valves are different Noval pin connection.E80CF and 6AN8 are Best.7199 Sovtek and
American's 7199 are not same charactor valves.Sovteck 7199 is closely same of 6F1P russo but different pin connection.
6F12P is high mew u triode and penthode so can not use with driver for this amplifier.very simple circuit and
good for drive any Audio Valves even direct heating Triode .please try this circuit to build up one!!!!!!
This driving circuit is
call it's Perque Drive. Perque is Nick Name of Mr Tetsu Kimura. Mr Kimura has experimented this fundamental circuit long
time ago and many person getting good result. frequency response is good and good drive to power tubes than any
regular triode SRPP.we can get easly sound of good bass , good mid and high range from Good Power Valves.
depend on good audio transformers using.

ref: 6AN8 Mu=20,6BN8(ECF80)Mu=20,6BL8 Mu=20,6LN8 Mu=20,ECF80 Mu=20,E80CF Mu=18,6F1P Mu=20, 7199(RCA) Mu=20
6F1P Mu=20 and 6U8 Mu=40. Mu is Mu of a part of Triode.

ECF80 and 6BL8 are same tubes and SQ tubes are E80CF and 7643 .
ECF80 is Miniwatts NOS and sound is very good bass.mid high is nice.
Ei 6BL8 is same type of tube of ECF80 . both are use to be use for Mixer at RF.
Ei 6BL8 can get good bass and mid ,high are classical sound.getting sound from Piano.
some one said E80CF will be get good bass and mid and high range is good for piano.
for Jazz and even classic. 6AN8 is just difficult get good one now so 6BL8 is good
tubes instead as 6AN8.so I can use various type of tubes this amplifier.
6BL8 ,ECF80, E80CF, 6F1P and 7634(Matsushita(Panasonic))made.
some one said E80CF Telefunken sound is good for Audio Driver.
sound is just like DHT(Direct Heating Triode)sound.

Note:
One thing KT90 are not so good sounding for Single Ended.originally KT90 is same spec of
TV horizental final(PL509) valves so not for Audio valve.static charactor is good but sound is not
same as KT88 and EL156(China).

Hatt Audio Laboratory Japan --Audio Transformer Factory--

Compatible Amplfier Circuit for KT90/KT88 and EL156 China

Just enjoy music with KT90 singele ended Amplifier June 2010

But more powerfull sound getting from EL156 China

Dissipasion is 60W Big Beam tube,good see

Links

Tim from Australia , he is make planning build up KT88 Single Ended Amplifier
now.I got e-mail few week ago from Tim.he said would like to brew KT88 single ended
Amplifier.so start build up KT88 single ended amplifier by Tim.one by one.
also his speaker system is home brew speaker system. Tim is some kind of doctor in autralia.

Speaker System by Tim W on June 2011

Jump to Dream of TimD.I.Y from Australia

Going to Next PageHashimoto H20-3.5U using 300B Single Ended Amplifier DIY on 2016

Ref: LV 60 Amplifier designed by Mr Georg Neumann

New TANGO Transformer from ISO Transformers Co Tokyo Japan

Started from OCT 2016 as ISO TRANSFORMERS CO Japan

they have FC-20S instead of XE20S only name of transformer is different.and Name of company is no more TANGO.
New company re-started by ex employee of ISO TANGO.real new company of ex ISO TANGO.and New Name of company is
ISO TRANSFORMERS CO JAPAN.

re build EL156 China Single Ended Amplifier on 2018 Mar

For KT88,6550,EL156,EL34 and KT120,KT90,6L6GC schematic diagram

The people who made the amplifiers I made　Let's celebrate the brave amp builders!

My poor English is world-famous. It was about 20 years ago that a boy in Chicago asked me to teach him how to use a tube amplifier, and I taught him by email.
Frequently, the boy was saying that my level of English was low. At the age of 22 I moved to the USA and worked for a Jewish company for 3 years repairing amplifiers.
I moved to America at the age of 22 and worked for a Jewish company for 3 years repairing amplifiers. That is my biggest regret. I'm an old amp maker, over 70 years old. I will continue to make amplifiers, despite my poverty.
I can also speak Spanish, having lived in South America for nearly seven years, four as an expatriate for Pioneer. For the next three years I worked for the Motrola distributor in that country,
repairing Motrola radio equipment. My wife is a strong white Argentine woman. Her grandmother was English and her mother French. She has lived with me in Japan for 40 years and speaks Japanese more fluently than I do. Thank you for reading this far.
Thank you very much. I'll tell you more about myself when I get the chance.
Anyway, my English isn't very good, but it's all right if it makes sense. I'm sure there are foreigners who speak even worse English than I do. Please understand that this is not a site to evaluate my English. This text was written by translating my bad Japanese .

Gozilla Amplifier Diy

Who made Goziila Amplifier by Mr Rob Buelteman

Talking about 4P1L Single Ended Amplifier

If do you have intresting about Mizushima RIAA for Vinil

Go to the vinil of world DIY RIAA

In the case of KT 120, although the physique of the sound is felt large, although it is understood by listening to EL 156 - China, the physique of the sound is large,
and it gives a sweet flexible musical rich sound. I can not understand why EL 156 - China was discontinued, it is a very rich musical tube.
If EL34 or KT88 is used for this amplifier, it will sound like KT88 in EL34.
I think that it is a very good amplifier for the simple circuit as long as EL 156 - China and EL 34 are used.
I think that it became a musical rich amplifier with very little distortion feeling. It needs a good power supply and a good output transformer.

It is my feeling. I understand EL156-China is good, but I doubt if KT-120 will give you a
good sound. It is hard to say that it is a good vacuum tube unless you change the circuit
and cook again. Although it is possible to test a plurality of vacuum tubes,
it is not an appropriate setting, so I can not say anything but I understood the goodness of a vacuum tube called EL34.
Traduce by Google from Japanese to English.

new project: KT120/EL34/KT88 and KT66/6L6 Single Ended Amplifier for Chile Market

NNeumann's --The LV60 equaliser and cutter-head power amplifier

please vist above site new EL156/EL34 Single Ended Amplifier.

Schematic diagram of Neumann LV60 cutting machine

(Since 20th/feb/2009)last up date 27th May 2024 from Yachiyo Chiba Japan

If would like to know more ?

Single Ended Amplifier D.I.Y

How to build up Amplifier Single Ended Amplifier 2011-2024