What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Pioneer SX-440

 The SX-440 is the latest in stereo receivers, made strictly for those who care a lot about stereo. It uses an FET in the FM front end to provide excellent selectivity, and sensitivity as high as 2,5 µV (IHF). The AM tuner section is equipped for ideal reception with a ferrite loop antenna. The audio-frequency output circuit is all silicon transistorized and employs the SEPP-OTL system. Music power output is at a dynamic 40 watts (IHF), with all this , the SX-440  will make a fine addition to your room and you'll discover qualities of sound you never know existed.
 FM Tuner Section
When choosing a good general-purpose stereo receiver careful inspection must first be made of the FM section. The reliability of the front end section is vital for perfect reproduction of FM monarual and stereo broadcasts. The FM front end of the SX-440 is about the best you can get - a combination of an FET and a three-gang variable capacitor. Even in areas where station crowding occurs the SX-440 delivers clear, interference-free reception. The high sensitivity (2,5µV ) is indicative of the superior FM performance of this receiver.

FM Multiplex Section
The advanced circuity of the SX-440 includes an FM multiplex section, time switching type, with automatic common, defeatable stereo functioning. Channel separation is more than 38 dB (at 1khz). Easy to read front dial has a lamp to indicate FM stereo performance.

AM Tuner Section
The superhoterodyne AM tuner has a receiving band of between 525 - 1605 kHz to equal the range of Am broadcasts. Sensitivity is 8µV, so it doesn't require an outdor antenna when in the vicinity of a station; the SX-440 has an adeguate ferrite loop stick bar antenna to pick up most any AM broadcasts.
 Audio Section
The SEPP-OTL system is used in the advanced audio output circuit. This gives it an output of 40 watts, perfect for home use and with powerful stereo separation.

Complete Terminal Facilities
With the SX-440 you can  add a complete stereo system from the selection of terminals provided. It combines ideally with tthe best quality record players, stereo tape recorders and reverbration amplifiers, with all terminals conveniently located, plus a set of auxiliary input terminals. For tape deck versatility, a tape monitor circuit and tape recording/playback jack to DIN standards are provided. You can ever connect two separate loudspeaker systems through this practical receiver.

Elegant and Unique Design
The midnight black front panel is finished with special acrylic resin over the entire surface, giving the SX-440 a sophisticated durable lustre. Power switch-on brings out subdued illumination for crystal-clear readings. Take a look at  the SX-440 and you'll agree it's the smartest set ever. 
Audio Section
Circuity Type:  Single ended pus-pull
Music Power Output (IHF):
40 watts at 4 Ω total
33 watts at 8 Ω total
RMS Rated Power Output:
15 watts per channel at 4 Ω (both channel driven)
12 watts per channel at 8 Ω (both channel driven)
Harmonic Distortion:  less than 1% (at 1khz rated output)
Frequency Response:  20 Hz to 20 kHz ±3 dB
Channel Separation (at rated output):
Phono : 69 dB
Aux : 50 dB
Power bandwidth:  30 Hz to 20 kHz (Aux0
Hum and Noise: 
Mag : better than 75 dB
Aux : better than 85 dB
Inputs Sensistivity:
Magnetic Phono : 3 mV
Tape Monitor : 130 mV
Aux : 130 mV
Recording Output:  230 mV (DIN)
Output Terminals and jacks:
Speakers : 4 - 16 Ω
Stereo headphone Jack,
Simultaneous tae recording jacks, equipped with Tape Monitor switch
Tape recording/playback jack (DIN Standards)
Damping Factor:  25 (at 8 Ω)
Speaker Selector Switch:  A or B speakers
Equalization Curve:  Phono RIAA Standards
Tone Controls (each channel): 
Bass  : boost 13 dB , cut 11 dB (at 50 Hz)
Treble : boost 9,5 dB, cut 10 dB (at 10 kHz)
Loudness Contour:  Switchable to On -Off, boost 12 dB at 50 Hz, boost 6 dB at 10 kHz, with Volume control set at -40 dB
FM Tuner Section
Circuitry:  Front end using FET and 3-gang variable capacitor
Frequency Range:  87 - 108 MHz
Frequency Resppnse:  24 - 20,000 Hz +0,5 -3 dB
IHF Usable Sensitivity:  2,5 µV
Harmonic Distortion:  0,4%
Image Rejection:  55 dB (at 98 MHz)
Cross Modulation Rejection:  96 dB
Signal-to-Noise ratio:  50 dB (IHF)
Antenna Input:  300 Ω (balanced)
Multiplex Section
Circuitry:  Envelope detection type de-modulator, Stereo/Mono Common, Defeatable Stereo Functioning
Channel Separation:  35 dB (at 1 kHz)
AM Tuner Section
Circuitry:  Superheterodyne
Frequency Range:  525 - 1605 kHz
IHF usable Sensitivity:  8µV
Image Rejection:  47 dB (at 1000 kHz)
Antenna Input Power:  Built-in Ferrite loopstic Antenna
General Section
Power Supply:  110, 117, 130, 220, 240 volts (switchable), 50/60 Hz
Power Consumption:  60 watts max
Dimensions (W x H x D):  405 x 139 x 358 mm (15-15/16" x 5-7/15" x 15")

Eight:  8 kg (17-5/8 lbs) net

Nessun commento:

Posta un commento