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





Genesis APM-1 loudspeakers


The Genesis APM-1 embodies our commitment to the shattering of traditional high-end loudspeaker price-to-performance ratios. With a stunning new form factor and engineering innovations that belie their cost, our new APM-1 is a ideal audio/video loudspeaker system, offering unprecedented ease of placement in your listening environment.. Their sleek modern industrial design encompasses innovative engineering and driver technology, setting the stage for the captivating performance of the revolutionary new APM-1 from Genesis technologies.

This series of loudspeakers, by virtue of its extraordinary dynamic range and extended frequency response, is perfect for both high-end home audio and video applications. The AMP-1 has in fact been specifically designed to excel in both of these areas.
Like all genesis loudspeakers, the  APM-1 embodies a dipole design producing sound from both the front and the rear, one out of phase with the other. While the advantages of dipole design are many, the two main benefis are ease of placement in the room 9they can even be located very close to a wall boundary) and more natural, spacious sound reproduction.

Dipoles achieve their superior performance because they create a radiation pattern where the energy emanating to the sides of the speakers is nearly non-existent. With very little acoustical energy reaching the side walls of your living room, not only is placement of the speakers easy but, remarkably, the listener is able to experience the music unencumbered by the normal room interactions which plague most other speaker system.

The APM-1 Loudspeakers utilize our most sophisticated technology. Suspended within sculpted cherry wood front baffles measuring a mere 11" wide are four 1" planar ribbon tweeters, a pair of our newly minted titanium midrange modules, as well as four mid-bass couplers. Down below are two 15" aluminum cone servo subwoofers driven by twin intergal G-SAT 500-watt servo-controlled switching power amplifiers.

Drivers.
The tweeter used in both the front and back of the  APM-1 has been described by many reviewers in both the American and foreign Audiophile press as "possibly the world's best". It is a 1" planar ribbon design that is handcrafted from an extremely thin, laminated membrane of aluminum and kapton. It measures a mere 0,0005" thick. The advantage of incorporating such an extremely thin membrane is its low mass. The result of this design is a driver that produces a rapid and uniform response to high frequency transient and has the speed of the best ribbon/electrostatic designs without the characteristic distortion and poor dispersion associated with them.

Our new 5-1/2" midrange driver is machined from pure titanium, one of the lightest and stiffest materials known to man. Its super low mass makes it one of the best transducers ever made. With its nearly instantaneous transient response, this titanium midrange inspires the APM-1 loudspeakers to sound lifelike and effortless. This driver will be incorporated into forthcoming Genesis products costing many times that of the  APM-1.
To create a "sound bridge" between the midrange and the servo-woofer system, the  APM-1 incorporates two of our world-renowed 6-1/2" metal cone mid-bass couplers ( as found in our Genesis V and Genesis 500). Being of an extremely light and stiff design, this metal cone is capable of handling the huge dynamic range demands of the system while maintaining the extremely low coloration and excellent transient response critical in reproducing the classic "Genesis Power Band".
As in all Genesis loudspeakers, the drivers used in the APM-1's are custom crafted devices designed and tuned by Genesis engineers for transparent and dynamic performance.

The APM-1 gets the "low Down"
Servo control of the woofers coupled with metal cone technology are the keys to the phenomenal bass performance of the APM-1. listening to traditional woofer systems, one could describe the bass as "heavy", 'soggy", or "boomy" to some extent because the woofer has high mass and therefore high inertia. This causes poor control and high distortion. In a servo woofer system, complete control of the woofer is made possible by the addition of a motion sensor (accelerometer) mounted directly on the woofer itself. The resultant decrease in distortion, greater frequency extension and tight control yield musically accurate yet "floor shaking" bass.


The servo controlled metal cone woofer system of the APM-1 are driven by the new Genesis G-Sat Amplifier. This unique power plant utilizes an axtraordinary technology known as the switching amplifier, first introduced to the audio world by Genesis co-founder Arnie Nudell. Acclaimed for exemplary performance by virtue of its perfectly linear response, near-perfect efficiency, and "slam factor", our switching amplifier is superior to just about any other form of amplification. In fact, the Genesis servo-bass system forges the best melding of driver and amplifier imaginable, yielding the precise and powerful bass required for today's demanding dual-purpose speaker systems.

Specifications
Frequency Response:  20 Hz to 36 kHz (±3 dB)
Impedance:  4 Ω
Sensitivity:  90 dB
Woofer amp.:  500 watt switching amp. Built-in
Dimensions (W x H x D): 11" x 64,5" x 25"
Weight:  240 lb/each


JVC JL-B41 turntable


Direct drive system developed intorducing vibration free  and no-resonance design technology.
The Tone-arm design with a low center of gravity  and applied Anti-vibration measures. Vibration damping materials are applied to the inside of the pipe and the precision bearing part, and a rubber isolation is used for rear arm part support.

Specifications
Type:  Record player
Motor:  8-pole DC servo motor
Drive System:  Direct-drive
Platter:  310 mm aluminium die-cast
Weight:  1,6 kg
Speed:  33 and 45 rpm
Fine Adjustment Rotation Range:  ±2,5%
Starting Characteristic:  Normal operation
Wow and Flutter:  0,05% WRMS
Signal-to-Noise Ratio:  60 dB
Tone arm
Type:  TH system static balance type
Full Length:  342 mm
Arm Effective Length:  245 mm
Tracking Erroe:  ±1°30'
Overhang:  15 mm
Mounting Cartridge Self-weight:  14 g - 32 g (including headshell)
Stylus Variable Range:  0 to 3 g
Cartridge Type:  MM type
Frequency Characteristic:  10 Hz to 25 kHz
Output Voltage:  2 mV (1 kHz, 5cm/sec)
Separation :  25 dB (1 kHz)
Impedance:  3,5 k Ω  (1 kHz)
Load Resistance:  47 to 100 k Ω
Dynamic Compliance:  30 x 10¯⁶ cm/dyne
Tip:  0,5 mil
Stylus Pressure:  1,5 g to 2,0 g
Own Weight:  6,5 g
Cabinet and other Section
Dust Cover:  Acrylic  free hinge
Foot: Height adjustable
Pickup board:  Aluminum die-cast
Power Supply:  AC 100 - 120 V, 220 - 240 V 50/60 Hz
Power Consumption:  5W (100 V 50 Hz)
Dimensions (W x H x D):  490 x 190 x 410 mm
Weight:  10,5 kg


Cerwin-Vega 211R


Cerwin-Vega Features:
Smooth, extended response, low coloration, and good dispersion across the entire audio spectrum
High Efficiency Design - 4 to 10 times more output per watt than competing systems
Enormous Flux Densities for quick precisely damped transient response and accurate reproduction of subtle musical textures
High Energy components with up to 10 dB more undistorted output capability than other systems
"Infrasonic" Back wave tuning for optimum bass coupling to listening room
Circuit Breaker of fuse protection of all hi-frequency drivers.

Inside Design:
Bass you can feel - Cervin-Vega woofers combine high efficiency and high power handling ability for more low-distortion output below 50 Hz and quicker transient attack than sluggish acoustic suspension units.
Crisp, Accurate highs - Our exclusive dhorm tweeters feature extremely high flux densities and low mass diaphragms. The result  - superior transient response and flat evenly dispersed output to beyond 20 kHz
Controllable Imaging - A reflective mid-hi horn in the 211R adds spatial dimension and presence, eliminates "holes" due to poor room acoustics.
Unique "Infasonic" Tuning - basic enclosure resonce of 5-10 Hz eliminates response peaks and "boom" from the audible range.

Outside design
Rugged components - Extra heavy frames and specially treated cones and voice coils maintain flawless performance under demanding use.
Quality cabinets - All cabinets are premium hardwood on hi-density 3/4" particle board, with solid inlays and hand rubbed natural oil finishes for lasting beauty and easy maintenance.
Easy component access - Snap-on grille (except 24) and removable cabinet back allow field-replacement of all components
Adjustable balance - Rotary crossover controls allow precise tailoring of high frequency balance to suit any room and any music. (fixed crossover on 24)

 Specifications
Maximum Power Input:  100 watts RMS; 200 watts peak
Effective Frequency Range:  25 -25,000 Hz
Flat Frequency Range:  32 - 20,000 Hz ±3,5 dB
Sensitivity (1 watt/1 m at rated power):  100 dB
Maximum Sound Level (1 m at rated power):  119 dB
Dynamic Range (in a 40 dB ambient noise field):  79 dB
Crossover Frequency:  1,500 Hz; 3,000 Hz
Speaker Elements:
Low Frequency:  L-123W 12" (300 mm), 2,1" (53 mm) voice coil, 20 Hz resonance, 13 lb (5,9 kg) magnet system
Mid Frequency:  HF-91 cast aluminum horn, 1" (25 mm ) voice coil; 18,000 Gauss
High Frequency:  DT-10 cast aluminum,  5" (127 mm), 1" (25 mm) voice coil ; 18,000 gauss
Dispersion (at 10 kHz):  100°
Impedance:  4 - 8 Ω
Configuration:  Direct radiating , with controllable mid-hi reflection, Infrasonic ducted cabinet
Dimensions (D x W x H):  390 x 380 x 660 mm (15-1/2 " x 15" x 26")


Cerwin-Vega 211


Cerwin-Vega Features:
Smooth, extended response, low coloration, and good dispersion across the entire audio spectrum
High Efficiency Design - 4 to 10 times more output per watt than competing systems
Enormous Flux Densities for quick precisely damped transient response and accurate reproduction of subtle musical textures
High Energy components with up to 10 dB more undistorted output capability than other systems
"Infrasonic" Back wave tuning for optimum bass coupling to listening room
Circuit Breaker of fuse protection of all hi-frequency drivers.

Inside Design:
Bass you can feel - Cervin-Vega woofers combine high efficiency and high power handling ability for more low-distortion output below 50 Hz and quicker transient attack than sluggish acoustic suspension units.
Crisp, Accurate highs - Our exclusive dhorm tweeters feature extremely high flux densities and low mass diaphragms. The result  - superior transient response and flat evenly dispersed output to beyond 20 kHz
Unique "Infasonic" Tuning - basic enclosure resonce of 5-10 Hz eliminates response peaks and "boom" from the audible range.

Outside design
Rugged components - Extra heavy frames and specially treated cones and voice coils maintain flawless performance under demanding use.
Quality cabinets - All cabinets are premium hardwood on hi-density 3/4" particle board, with solid inlays and hand rubbed natural oil finishes for lasting beauty and easy maintenance.
Easy component access - Snap-on grille (except 24) and removable cabinet back allow field-replacement of all components
Adjustable balance - Rotary crossover controls allow precise tailoring of high frequency balance to suit any room and any music. (fixed crossover on 24)

211 Specifications
Maximum Power Input:  100 watts RMS; 200 watts peak
Effective Frequency Range:  25 -25,000 Hz
Flat Frequency Range:  32 - 20,000 Hz ±3,5 dB
Sensitivity (1 watt/1 m at rated power):  98 dB
Maximum Sound Level (1 m at rated power):  117 dB
Dynamic Range (in a 40 dB ambient noise field):  77 dB
Crossover Frequency:  2,500 Hz
Speaker Elements:
Low Frequency:  L-122 12" (300 mm), 2,1" (53 mm) voice coil, 24 Hz resonance, 10 lb (4,5 kg) magnet system
High Frequency:  DT-8 cast aluminum,  5" (127 mm), 1" (25 mm) voice coil ; 16,000 gauss
Dispersion (at 10 kHz):  100°
Impedance:  4 - 8 Ω
Configuration:  Direct radiating , 2-way, Infrasonic ducted cabinet
Dimensions (D x W x H):  390 x 380 x 660 mm (15-1/2 " x 15" x 26")


Wadia S7i


The Wadia S7i CD player  DAC / Digital Preamplifie r is the latest generation of our highly acclaimed series of high performance integrated digital audio playback products. Fifteen years ago, Wadia was the first to develop proprietary digital components that blended the functionality of a CD player, digital preamplifier and processor in one product. Today, the S7i platform not only provides reference quality CD playback, but also serves as a flexible and complete digital hub managing and optimizing the performce of today ’s principle digital sources . The S7i combines exceptional disc playback technology, our best integrated decoding computer technology, and digital source management. It is at our - de - force solution for any music lover wanting the very best musical performance, with out the complexity of multiple digital components.

Series 7 is Wadia’s highest designation for integrated digital products. Not surprisingly, the all-new CD transport exemplifies series 7 level playback performance. This exceptional transport was designed in collaboration with the Austrian company Stream Unlimited. Wadia co-engineered many details of this design, including an application-specific servo system optimized for the newest generation of Wadia playback machines. The results exceeded even our own expectations.


Technical Specifications
Transport:  Modified CD and Data Drive
Power Supply:  Dual transformers in internal isolation chamber
Decoding Software:  3 user selectable upsampling algorithms including DigiMaster v2.5
Compatible Formats:  Red Book CD, CD-R, CD-RW, MP3, FLAC and WMA
DAC Sample Rate:  1.4112 MHz
Digital Volume Control Range:  50 dB in one hundred 0.5 dB steps
Maximum Output Voltage:  Can be adjusted via internal switches from 0.3 V to 4.25 V to match system sensitivity
Output Impedance:  Less than 15 Ω
Digital Inputs:
1 USB - The Wadia USB input accepts the following sample rates: 44.1k, 48k and 96k
1 AES/EBU (XLR)
1 SP/DIF (BNC)
1 Plastic Optical (Toslink)
Digital Outputs:
1 Glass Fiber-Optic (ST)
1 AES/EBU (XLR)
1 SP/DIF (BNC)
1 Plastic Optical (Toslink)
Analog Outputs:
1 pair balanced (XLR)
1 pair unbalanced (RCA)
Both can be used simultaneously
Power Consumption:  25 watts
Dimensions (HxWxD):  184 x 432 x 420 mm (7.25 x 17 x 16.5 inch)
Finish Options:  Black or Silver Anodized Aluminum


B&W DM2 MkII


Bowers & Wilkinson DM2 Mk2
Stand-mount loudspeaker system
Product Summary
The DM2 MK2 is a three-driver loudspeaker system of 47 litres capacity. It is a free-standing design, for use with B&W purpose-made accessories but will also incorporate well into existing furniture.
The DM2 MK2 offers a wide horizontal dispersion and excellent vertical dispersion within a listening window of approximately 10° in the vertical plane and 40° in the horizontal.
To take maximum advantage of this of this important design feature, the loudspeaker must be mounted vertically and located at the correct listening height or angled slightly to project the
window in an upward direction.
The pedestal stand or angled plinth caters for these two alternatives. Technical highlights
The bass driver is housed in a critically vented enclosure and has a crossover point of 400 Hz where the vent tuning is so designed to extend the low frequency half point to 45Hz.
The mid band frequencies are handled by a 100mm unit housed in a separate enclosure – critically damped with long-haired natural wool.
Frequencies above 3kHz are handled by a 25mm multi-filament weave polyester dome unit, critically damped with PVA compounds

Drive Units
High-frequency driver: a 25mm multifilament weave polyester dome unit, critically damped with PVA compounds
Mid-range driver: a 100mm unit housed in a critically vented enclosure
Bass Driver: housed in a critcally vented enclosure
Frequency Response:  50 Hz – 18 kHz ± 3dB, at centre of listening window
Sensitivity: 9 volts into 8 ohms = 85 dB at 1m
Power Handling: 25 W – 200 W
Dimensions (H x W x D):  710 x 270 x 330 mm