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SE-C01 Stereo
DC Power Amplifier
The new SE-C01 may be a compact component
but puts out the kind power you expect from a
much larger amplifier. And it does this in the high
fidelity tradition, with virtually flat response over
the entire audible range and total harmonic
distortion of only 0.03%. It's a true DC amplifier
that can handle the nuances and power of a full
orchestra.
DC Amplifier for Realism in
Sound
This DC (direct coupled) amplifier was designed
without any coupling capacitors. You won't find
any in the signal path nor in the feedback loop.
Nor will you encounter DC drift and instability,
problems often arising from this type of design.
They have been controlled by the following
design measures: a current-mirror loaded
differential first amp stage using thermally
balanced dual transistors; a voltage amp stage
with purely resistive load and excellent open
loop characteristics; and a power amp stage
20 Hz square wave response
SE-C01 Input
Output
Non DC amp
Input
Output
Gain, phase, vs. frequency response
Frequency(Hz) which,
by utilizing the diode-like behavior
between transistor base and emitter, provides
accurate thermal compensation over an
extremely wide range of temperatures.
Other features of special note are the current
limiter and the short circuit protection circuit.
Delivers 50 W +50 W continuous
power both channels driven into
8 ohms, 20 Hz to 20 kHz with no
more than 0.03% THO
This DC amplifier illustrates that big things can
come in small packages. The SE-C01 has ultra
compact dimension but delivers 50 watts per
channel minimum r.m.s. power into 8 ohms with
no more than 0.03% total harmonic distortion
from 20Hz to 20,000 Hz. Except in the most
"power hungry" installations, it easily handles
the dynamics and detail of a full orchestra.
Output power vs. total harmonic
distortion
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SU-CQ1 Stereo Preamplifier
This Stereo Preamp is a perfect complement to
the SE-C01 in compact size and superior perfor
mance. It brings you clear, precise sound
reproduction and has its own built-in MC pre
preamplifier, a feature often lacking even on
large units. The use of low noise transistors and
other components makes it an ideal link in the
chain from music source to high fidelity
reproduction.
Built-in Moving-Coil (MC)
Car tridge Pre-pre amplifier
The increasingly popular MC cartridges can be
used with the SU-C01 without purchasing a
separate MC pre-preamp because it already has
one built in. This built-in MC pre-preamplifier is a
push-pull design from the front stage, with its
low noise 2SA978 and 2SC2385 transistors,
to the voltage amp output stage.
Referenced to a 250�-t V input, it has an
impressive signal-to-noise ratio of 78 dB (IHF A).
--- Phono
Equalizer with S/N Ratio
of 88 dB (at 2.5 mV, MM input)
When you use a moving-magnet type cartridge,
you can expect an even better signal-to-n01se
ratio, thanks to the ultra-low noise transistors
used in a differential first stage with current
mirror loading. Referenced to an input of 2.5 mV,
the SIN rat1o IS 88 dB (IHF A), which in practical
terms indicates that you simply won't hear phono
circuit noise when listening to a record. Distortion
is an amazingly low 0.005% at 3V output
(VR: -20dB,20Hz-20kHz). RIAAequalization
is within± 0.2 dB from 20Hz to 20kHz due to
Phono equalizer noise spectrum (MM)
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specially selected metal film resistors
(1 % tolerance) and polypropylene capacitors
(tolerance 2% ). And with a phono overload spec
of 200 mV, you have plenty of dynamic range to
handle the most difficult discs. .a source
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Subso nic Filter Cuts Rumble
This -12 dB/oct. subsonic filter cuts off
unwanted noise below 30 Hz, such as arm
resonances, record warp, platter rumble and so
forth. It makes use of the tone control circuit and
performs its function without additional
components or degradation of the signal-to
noise ratio.
Tone Controls with Center
Defeat Positions
Both the bass and treble control circuits are
defeated, i.e. completely switched out of the
signal path, when their knobs are turned to the
click-stopped center. The signal goes straight to
the flat amplifier stage without encountering any
response altering components.
Power Supply Designed for Low
Noise, High Stability
The SU-C01 's power transformer is mounted in
an iron shielding case to prevent AC hum from
entering any of the circuits. Zener diodes are
employed for voltage regulation, further
protecting against the effects of AC line induced
noises. The result is virtually noiseless power
supply that permits the ultra-low noise preamp
circuits to perform to their full capacity.
Gold Plated Connection Jacks
All jacks are gold plated to ensure low-resistance
electrical contact under all conditions and after
years of repeated use. This gold plating is
especially critical in the MC phono inputs where
the generated signals are in microvolts.
- Finely Machined Diecast Cabinet
- Ma tched audio rack (SH- 505, SH-505K) and
steel stand (SH- 504) are optionally available.
Optional rack (SH-505K)