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





The Fisher-Lincoln Model 70


 The Fisher-Lincoln Automatic Turn-Over Turntable Model 70
This marvel of American mechanical genius has at one strake removed the last barrier to the enjoyment of recorded music without interruption. For the Fisher-Lincoln model 70 plays one, or both sides at up to ten LP records - over eight hours of continuous music - automatically.
It handles 7", 10" and 12" records intermixed, in any order, 33-1/3 rpm. The only record on the turntable is the one actually being played. The turntable is of studio quality, belt-driven by a special SynDuction motor - fast start, plus constant, dead-accurate speed. Teflon bearings lubricated for life. Standard-mount tone arm for all makes of cartridges. Position and pressure adjustable from above.

Dimensions: 27" wide; 15-3/8" deep, 19-1/4" high, with base
Clearance Required: 14-3/4" above base



Pioneer SX-424

 The SX-424 is a medium-powered, budget-priced AM/FM solid state stereo receiver with special features for sensitive FM tuning and wide frequency response.
Pioneer SX-424 is proof positive taht stereo on a limited budget doesn't have to mean limited stereo sound. In a handsome package of quality circuitry and reasonable price, the SX-424 offers up to 50 watts of music power at 4 ohms, very sensitive FM reception a wide linear type dial scale for fine FM tuning, and highly respectable  specifications both for the FM tuner section and the audio section. It's versatile unit, too because you can use it with almost all music sources available today, including records, tape, FM and microphone. Best of all it's Pioneer made, which means that, for its price, there is probably nothing available today that can compare with its quality.

Specifications
Amplifier Section
Music Power Output (IHF):  50 W at 4 Ω;  37 W at 8 Ω
Continuous Power Output (1 kHz each channel driven):
18 W / 18 W at 4 Ω
14 W / 14 W at 8 Ω
Continuous Power Output (1 kHz both channel driven):
13 W + 13 W at 4 Ω
12 W + 12 W at 8 Ω
Total Harmonic Distortion:  less than 1% (continuous power output)
Intermodulation Distortion:  less than 1% (continuous power output)
Power Bandwith (IHF):  20 Hz to 45 kHz (8 Ω, T.H.D. less than 1%)
Frequency Response:  20 Hz to 70 kHz ±3 dB
Speakers output Impedance:  4 to 16 Ω
Damping Factor:  40 (8 Ω, 1 kHz)
Input Sensitivity/Impedance:
Phono Mag :  3 mV/50 k Ω
Mic :  6,5 mV/50 k Ω
Aux :  180 mV/100 k Ω
Tape Monitor :  180 mV/100 k Ω
Tape Monitor (DIN) :  180 mV/100 k Ω
Recording Output:
Tape Rec (Pin Jack) :  180 mV
Tape Rec (DIN connector) :  36 mV
Bass Control :  -9 dB, +9 dB / 100 Hz
Treble Control :  -9 dB, +6 dB / 10 kHz
Equalization Curve (Phono):  RIAA standard
Loudness Contour:  +9,5 dB/100 Hz; +5,5 dB/10 kHz (with volume control set at -40 dB position)
Hum and Noise (IHF): 
Phono :  more than 75 dB
Aux :  more than 85 dB
FM Tuner Section
Requency range:  88 MHz to 108 MHz [87,5 MHz to 108 MHz, FTZ approved]
Usable Sensitivity (IHF):  2,3 µV
Capture Ratio (IHF):  3,5 dB
Image Rejection:  more than 50 dB (98 MHz)
IF Rejection:  more than 80 dB (90 MHz)
Spurious Rejection:  more than 70 dB (90 MHz)
AM Suppression:  45 dB
Signal-to-Noise Ratio:  65 dB
Harmonic Distortion:
Mono :  less than 0,6% (100% mod.)
Stereo :  less tahn 0,8% (100% mod.)
Tuning Indicator:  Signal strength type
Stereo Separation:  more than 40 dB (1 kHz)
Sub Carrier Suppression:  more than 35 dB
Noise Filter:  Switchable to On-Off
Antenna Input:  300 Ω balanced; 75 Ω unbalanced
De-emphasis Selector:  50 µS (FW model only)
AM Tuner Section
Frequency Range:  525 kHz to 1605 kHz
Usable Sensitivity (IHF):  15 µV
Image Rejection:  more than 45 dB (1,000 kHz)
IF Rejection:  more than 35 dB
Signal-to-Noise Ratio:  more than 50 dB
Antenna: Built-in ferrite loopstick antenna
Miscellaneous
Semiconductors:  Transistors 30, Diodes 24; FETs 1
Power
Requirements :  120 V 50 Hz; 220 V 50/60 Hz, or 110, 120, 130 220, 240 V (switchable) 50/60 Hz
Consumption:  90 W max
AC Outlets:  1 Unswitched, 1 switched
Dimensions (W x H x D):  431 x 146 x 347 mm (16-31/32" x 5-3/4" x 13-21/32")
Weight (net): 
120 voltage model :  7,5 kg (16 lb 8 oz)
220 voltage model:  7,9 kg (17 lb 6 oz)

Yamaha NS-200M


Check our references
First trust your ears, thentrust the experts. That's  a reliable way to judge speaker systems. Especially reference monitors.
Yamaha make this point because of the response our studio monitor speakers have received from recording engineers at top studios like A&M, A&R, Hummingbird, Universal and Westlake. As well as Yamaha's own music research and development facility and professional studio in Glendale, California.
And thet response has been extraordinary. Here's why: accurate reproduction. Which brings us to the new NS-200M and NS-500M.


The Yamaha NS-200M is compact without compromise. It can easily handle the wider dynamic range and frequancy response of today's sources. Its 10-inch pure spruce woofer cone is made of the same material that goes into the soundboards of our fine pianos. Its titanium carbide dome midrange and tweeter produce crisp, clear highs. And its low-loss cross over makes sure signals get to the drivers unscathed.



Specifications:
Type:  3-way, 3-speaker acoustic suspension
Drivers
Low Frequency :  250 mm (10") woofer carbon fiber/spruce cone
Mid Frequency :  60 (2-1/2") mm midrange titanium-carbide dome
High Frequency :  30 (1-1/4")mm tweeter titanium-carbide dome
Controls: Midrange and tweeter level controls
Power handling:  200 W
Sensitivity:  90 dB 1W/1m
Frequency Response:  40 Hz - 20 khz
Impedance:  6 ohms
Dimensions (W x H x D):  320 x 554 x 322 mm
Weight:  16,5 kg

Yamaha NS-5000


Yamaha finally  introduces the new top of loudspeakers NS-5000.  3-way bookshelf speaker system that illustrates the future direction of Yamaha's speaker technology grown out of years of cutting-edge research on all aspects of designing Hi-Fi speakers, including components and materials. The NS-5000, built upon the tradition of natural sound for which all Yamaha speakers have been known  and sets a new standard in sound excellence expected of Yamaha's top-of-the-line speaker. With non-colouration of sound, wide frequency response, consistent sound characteristics across the frequency range, and extremely low distortion set as self-imposed requirements for a new-generation speaker, we scientifically probed each of these characteristics to be incorporated into a flagship capable of bringing out the best of high-resolution audio sources. The result is the superb NS-5000, with sound and performance that sets a standard for all Hi-Fi speakers to come.

YAMAHA NS-5000

Newly Developed Diaphragms Boast Acoustic Velocity Comparable to That of Beryllium
 Newly developed R.S. (Resonance Suppression) Chambers Suppress Unwanted Resonance in the Mid and High Ranges
 12-inch, 3-way Bookshelf Design Draws on the Tradition of the Legendary NS-1000M
 Newly Developed Acoustic Absorber Eliminates Sound-absorbing Material to Revive the Original Presence of the Music
 Glossy Black Piano Finish Provides Improved Signal-to-noise Performance—and Adds to the Luxurious Joy of Ownership
 Carefully Crafted Laminated Plywood Enclosure Made of Japanese White Birch from the Island of Hokkaido

Specifications
Type:  3-way Bookshelf Bass-reflex Type
Woofers:  300 mm (12") cone type
MidRange Driver:  80 mm (3-1/4") dome type
Tweeter:  30 mm (1-1/4") dome type
Frequency Response:  26 Hz - 40,000 Hz (-10dB);  -100 kHz (-30dB)
Nominal Input Power:  200 W
Maximum Input Power:  600 W
Sensitivity:  88 dB / 2.83 V/1 m
Crossover Frequencies:  750 Hz / 4500 Hz
Impedance:  6 Ω  (minimum 3.5 Ω )
Dimensions (W x H x D):  395 x 690 x 381 mm; (15-1/2” x 27-1/8” x 15”) (with speaker terminals)
Weight:  35.0 kg (77.2 lbs). / unit