Technics STC 01 Brochure

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Technics STC 01 Brochure

Extracted text from Technics STC 01 Brochure (Ocr-read)

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power twtam llll I I I I I I I I I I I I peak 0 01!l 03 OG 12 25 5 10 20 40 80 1GO roglll I I I I I I I I l I I I 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 ' """"--+SPou! - ' :BE�m i : 1o.Hzb01hellil""''l'ldr-Y1!1'11181! � ' l'';§!lllml � 3 ' ' "" 0.1 2 3 s 710 2 3 5 7100 2 3 s

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dcleal doleiil .,2 201' 12 3 3 3 4 4 4 5 + - 5 + 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) 70 ; 00 1 :I 20 3 5 1 100 2 3 5 7 lk 2 3 5 1 l(k 2 4(); Frequency {Hz) 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 - ·- 0 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)