Decware SE34-I Operation Manual
High Fidelity Engineering Co.
OPERATION MANUAL
Zen Triode Integrated Dual Mono Amplifier
DDDDESCRIPTION:
ESCRIPTION:
ESCRIPTION:ESCRIPTION:
The SE34-I is a single-ended triode amp. It is dual
mono and features an integrated preamp.
FEATURES:
FEATURES:
FEATURES:FEATURES:
The SE34-I has dual-core hand wound output transformers with quad binding posts foe each channel
making it possible to segregate the amplifier into four
output channels.
There is an input selector (silver contacts) to allow you
to easily switch in up to four different line level
sources.
A high quality ALPS stepped potentiometer gives you
precise control over the volume with a fixed balance between channels.
There are two “presence” switches, one per channel, that
allow you to quickly alter the signature of the amp to
better match the differences between sources.
Each channel has a separate on / standby switch proving it is indeed a true dual mono design—all the way
through to the dual mono preamp.
High quality jacks, binding posts, and removable
power cord complete the package.
SETUP:
SETUP:
SETUP:SETUP:
Once you unpack your new amplifier you will need to
install the tubes and power cord before you do anything
else. There are two sizes of tubes used in this amplifier,
large and small. The large tubes (EL34) are the output
tubes and the small tubes (6N1P) are the driver tubes.
Your amplifier is shipped with a matched
Model SE34-I
Quad of high grade output tubes. Input tubes are also
matched so you need not worry which sockets you install
the tubes in. BTW, matched tubes are not required in
this design.
CONNECTIONS:
CONNECTIONS:
CONNECTIONS:CONNECTIONS:
Never operate a tube amp without having speakers hooked
up to it. Although we doubt you could damage this one,
it is kind of a universal law.
There are two pairs of binding posts on each side of the
amp. What you have here is a separate set of posts for
each output tube. This is explained in great detail in the
white paper on the web site for this amp.
In short these jacks can be paralleled or series to make up
each channel. There are a multitude of other options that
are discussed in the white papers.
To get started now, simply parallel the jacks for each
channel by connecting red to red and black to black.
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High Fidelity Engineering Co.
Your amp is shipped with four jumper wires that have
been terminated with banana jacks to accomplish this
purpose.
INPUTS
INPUTS
INPUTSINPUTS
Continuing along, hook your left and right inputs to
the input jacks marked “A” and rotate the selector
switch all the way to the left. Turn the volume control
counter-clockwise till it stops and turn the main power
switch on.
Once the tubes glow, you may turn each channel on
with the standby switches located between the controls.
Press play on your source and slowly raise the volume
control.
Enjoy the music.
When you are done listening, you may simply turn
off each standby switch and allow to tubes to glow if
you like. This keeps the amp warmed up and ready at
all times, and actually prolongs tube life.
HEAT
HEAT
HEATHEAT
You will notice your amp runs very warm. Some
would say hot. The heat you feel on the power transformers is created from the radiant heat of the nearby
output tubes, not the current draw. We have designed
this amplifier to run hot, but even at this high temperature, it is well within its operating parameters so
don’t be alarmed. Always keep the unit in standby or
turned off when you’re not listening to it.
BIASING
BIASING
BIASINGBIASING
The amp is self-biasing and self balancing. You do
not need matched tubes to get good sound.
CCCCIRCUIT
IRCUIT
IRCUITIRCUIT
The circuit design for the SE34-I is loosely based on
the Zen Triode Signature monoblocks, and the
ZTPRE signature preamplifier. We have from the factory built this amplifier with all of our top grade signature parts so little or no tweaking will ever be required to improve the sound. In depth design notes are
available on this special zen circuit on the web site and
Is recommended reading.
SPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
The amplifier has an RMS output into 8 ohms of 3.4
watts per tube.
The amplifier is optimized for 8 ohm and 16 ohm
speakers with no adjustment needed. It will also drive
4 ohm speakers with slightly less power.
The input sensitivity is 2.4 volts to bring the amplifier to full power. Even though it has an integrated
preamp with lots of gain, we have intentionally tamed
it down so that you can’t clip the amp with the average
2.0 volt line source such as common CD players.
The current draw when the amp is in standby is 27
watts per channel, and when operating at clipping is
71 watts per channel.
TUBES
TUBES
TUBESTUBES
Tube life in this amplifier is long. You should get
anywhere from 1 to 4 years from the tubes depending
on how much you listen to it.
The smaller 6N1P tubes can be rolled with 6922’s or
6DJ8’s with no further modifications.
FUSE
FUSE
FUSEFUSE
The fuse is located in the IEC connector for the removable power cord. Use only fuses rated between 4 and 6
amps.
SERVICE
SERVICE
SERVICESERVICE
We offer a lifetime warranty on the SE34-I. Service
problems can be handled quickly by calling us during business hours (9am to 5pm CST)
www.decware.com
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