Sentec sc 9 brochure

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8C9
LINEmLEVEL PREAMPLIFIER

SENTEC AB, a Swedish audio laboratory, with more
than twenty years of experience in audio designing and
manufactoring has created an innovative line-level
control amplifier.

It combines an outstanding musical quality and a truly
uncolored tonal reproduction in a very compact and
classical design.

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The SC9 is an all discrete design using high quality long-life components in a carefully
wellthought circuit layout. As we do recommend short speaker cords with the power amplifiers
close to the speakers, the SC9 utilizes class-A cable-driver main output stages which are able
to feed long signal cables of any brand.

Even hard -to-drive laboratorygrade coaxial-cables, of more than 10 meters of length are
recommended without any influence on the sonic performance. Low impedance cable
terminations, if prefered, can willingly be used.

A capacitance bank of totally 29.000uF, in a zener shuntregulated power supply, provides a
clean power source for the monolitic low noise dual JFET input amplifiers. Together with a
carefully designed circuit layout this results in a extremely high signal-to-noise ratio of 110
dBA refered. to the 1 Volt nominal output.

Through the use of double sided glass-reinforced through-plated circuit boards with a
decoupled ground plane, separated from the signal ground path, the SC9 is very insensitive to
radio interference carried by the incoming signal cable-shields.

A built in highly effective mains filter will supress any interference from mains carried noise and
spikes.

In order to achieve the shortest possible internal signal path and liberty in furnishing, we have
built the SC9 in a very compact and sturdy cabinet for easy placement close to your listening
position.

. . 6 Linalevel inputs with nominal sensitivity of I i 1.7 ,, 200 mV ' ' . __
g Sammiempamming sdm'wnhhecm . 200W .7 . A PO. Box 373, S 714 03 KOPPARBERG, SWEDEN
'nvmmedmea'nnm I ~ » ' - 1°.KOhms/733OPF 1* TEL: +46 580 202 30 FAX: +46 580 202 23
Nominal output with lEC- load (10 KOhms/1000 p) w , _ 1volt _
' Outputimpedance purelyresistivé ~ . i .100 Ohms I, i .
Maximum output voltage with IEC-load , y C ' f 6.6 Volts
Maximum output voltage with 100 Ohms load . -; 2.8 Volts j . .
Signsl-to-noise ratio reforod to nominal output votage , g 110 dBA D'Stnbmed by: 5
Dynamic range with any load impedance more than 75 Ohms , 125 dBA 3
Minimum slowing-rate at more than 75 Ohms load , ' y _ 25 V/uS 5
Harmonic and intarmodulation distorslon . u - u less than 0,05% . E
Frequency reaponse, source impedance less than 600 Ohms . 200 KHz 3
Power bandwith at more than 75 Ohms load _ ' y , , 600 KHz 5
Power consumption 220/240 Volts 50/60 Hz ' max 10W8tts 3
Overall dimensions , r H saw 338.0 150 mm 5
Net weight . 2 K93 (4.4lbsl g
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