pcl86  PCL86 Push Pull Differential Amplifier DIY

PCL 86 Push Pull Differential Amplifier DIY

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Start 24th Oct 2021



Differential Push Pull PCL86

USD $ 1800 by EMS Shipping

2 channel in stereo. Audio Power 7 w rms max AC 220/120V depend on your country current AC line
2 potentiometer just like above.

whos is using

PCL86 How is

This is new PCL86 UL connection push pull amplifier. probably power will be get
around from 6 to 8 W rms each cnannel.speaker impedance are 2 type 4 and 6 ohm.
in generally PCL86 push pull get around 8 W rms with penthode conection.
I used 15W 8 K P-P Audio push pull transformer by Touei Transformer Tokyo Japan.
nude charactor is 10Hz to 60Khz flat model number is OPT-15PR 8K
has 50% UL tap,secondary are 4-6-8-16 Ohms.this time with one of torgue Sw to change
4 and 6 ohm.recent many speaker system are 6 ohm and some high end audio speaker
use 4 ohms.primary current is max 120mA each wind.1.1Kg weight.also has 50% of UL tap.
they has 2 type of transformer right now, one of band type and black case type.
only available in Japan.very smart transformer.
one thing please try to hook up small Vita Q capacitor with coupling capacitor.
for to get more natural sound .finally I did replaced 3 times output transformer.
from small 10W one to 15W one.now I got around 8 W rms max.very clear sound like direct
heating single ended amplifier like a 2A3 SE.-3 dB freqency is 90Khz.
what effect do they have ? sound has very clear and very wide range -3dB band width.
[10Hz to 90 Khz -3dB]Push Pull but just low power than general Push Pull Amplifier.
some one said just like DHT Amplifier .but indirect tubes push pull amplifier.
why many amplifier maker does not made up these amplifier ? only one thing does not
get real push pull power.(but sound is great than general push Pull Amplifier.)
good separation, S/N is more than 80dB at 1Khz, very good frequency response.
easy to modificate your push pull amplifier.please do it's.
Note: please use LM317P ,P Type.more combiniense.(P means Plastic module)
finaly I got 7 W rms both mode and Max power is 8 W rms.DF is 3.3 at 1Khz 8ohm
but if replaced voltage of tap of transformer from 230V to 200V and adjuted plate
current with resistance of LM317P from 54mA to 62mA. power are down from 7.5 W to
6 W rms max. you will be get like a 2A3 SE sound.sounds like more warmer than before.
half of circuit wired with silver cable.
Note : 10Hz to 90Khz -3dB Max Power is 7 W rms.DF is 3 at 1Khz at normal power position
Este equipo armado con cable teflon y cobre ehchapado la plata.

Published on December 31, 2010
[quote name = 'Victor Serrano' date = '12 December 2010 - 08:38 PM 'timestamp =' 1292197119 'post =' 34393 ']
This is an update of the room in Santiago.
Many boxes, the two tall ones in lighter wood are FR courtesy of Daniel. Although the space is dedicated it begins to narrow :) But it has served to evaluate equipment and different sounds with other foreros. Lots of juice.
Using a Mizushima push pull on loan and very private, with double potentiometer, PCL86 valves.
It sounds very sweet, very clean, very sophisticated, very elegant. A pleasure. Especially with the FR with supertweeter, the sound opens from the bottom, from further behind the boxes, which in my opinion differentiates them from the FRs that I know where the sound is very forward, present, [i] in your face [ / i]. The main weakness? For those who like shattering bass, this is not the system. Quid pro quo. The Mizushima achieves an elegant but very polite bass, even on Klipsch with which I have heard a revulsive bass using other electronics.

Missing here is a Chinese hybrid amp that is on its way slowly and stuck in customs for quite some time :(
One of the two SE 6L6s that had previously left with another enthusiastic forero.
these comment get from Hifichile.cl copy from hifi.clHiFi.chile forum rep Chile santiago

schematic diagram

PCL 86 Differential Push Pull Amplifier deliver 7 W rms sound like Single Ended Amplifier

Diff Amp


constant current elements by LM317 for power line


important element how to make constant current FET for drive amplifier


if got oscilation amplifier please add small c for kill osclation



No1 and No2 Amplifier above

Up Ver model PCL86 UL Push Pull Full Differential Amplifier, Auido Transformar are Toei
OPT-20PR 8K Push Pull Transformar.just look like a FE-25-8 by Tango.
can switchable UL mode and Pentode mode.UL mode around 7W Max and Pentode mode
will be get 10W rms with out differential.this time does not usr limited current element
and used JFET instead of diode.generaly JFET has limited current effect whan connected
source and gate each other and can be adjust limited current with small resistance
connected source respect with ground.this time R is around 600 ohm and 1.4mA.
If would like to get good bass please big core of transformer like more than 20W use.

Current limited diode like indicates as E102 ,you can use 2SK30 Q lank each one has each differet current so choose correct
current for use amplifier constant current of plate current.please see next figure for easy to make insted of limited current diode
by 2SK30.

how to make

how to make limited diode using 2sk30 jFET very easy

PCL86 push pull amplifier

2 of them

 2 amp

house at daniel san  Daniel san

at Mr Daniel Adviz's

since 2nd Aug 2008 about PCL86 push pull Amplifier how to last up date 24th Oct 2021

Single Ended Amplifier D.I.Y edited with BlueFish By JH1 DAS ex WB4ACI from Yachiyo Chiba Japan

How to build up Amplifier Single Ended Amplifier since 2003