Infinity 7 Kappa loudspeakers

 

A New Generation Of High Accuracy Technology

The Kappa woofer has a highly innovative cone that is injection molded from a mixture of graphite fiber and polypropylene. The advantages of these two materials - graphite for its stiffness and polypropylene for its inertness - compliment each other. During the high pressure injection molding process, graphite fibres are forced into the polypropylene in a radial pattern. This composite structure exhibits extreme stiffness and pistonic operation up to nearly 1 kHz, low mass, fast acceleration and very high self damping. The result is taut, precise bass reproduction at all volume levels, with sufficient bandwidth to permit very smooth transitions to midrange drivers. We use the same composite cone (and the rigid cast frame of the heavier 12" Kappa woofer) in our no-compromise Infinity Reference Standard, Series V and we believe that it is the most accurate cone made - at any price.

Our revolutionary Polygraph k superwoofer handles the critical mid-bass and lower midrange frequencies. The spectrum of 80 Hz to 800 Hz where half of all musical energy appears and where most speakers are at their weakest. This new 5" dome-shaped driver operates throughout this range and delivers a seamless, coherent performance. Allowing voices and instrumental textures to emerge with an airiness and clarity that is musically convincing.

Diaphragm construction on the Polygraph k is more akin to that of a grand prix car than a loudspeaker. It is a composite structure, made from unusually thin polypropylene supported by an extremely stiff lattice of graphite fiber. These two materials provide an unprecedented combination of stiffness, low mass and damping. The Polygraph's transient response and resistance to breakup rivals that of the most expensive planar drivers. Its power handling and dynamic range surpass them.

The equally important upper midrange frequencies are covered by another new dome design. Our 3" Polydome k uses an edgewound voice coil for high electrical efficiency and a new formulation of soft polypropylene for a combination of excellent self damping and speed. Our research paid off in a driver of exceptionally low coloration. This dome mates beautifully with the potent Polygraph k and, because of its size, can go low enough to meet the 10" and 12" kappa woofers in our more affordable 3-way systems.

The higher frequencies still belong to our famous EMIT electromagnetic induction planar tweeters. Now, however, there are two of them, and both feature evolutionary improvements first used in our IRS, Series V.

 

Compared to its predecessor, the Kappa EMIT has a kapton diaphragm of approximately half the mass, a lighter, thinner aluminum trace (analogous to the voice coil on conventional cones and domes) and new ultra-linear, ultrahigh gauss rare neodymium magnets. High frequency response has been extended to 44 kHz, and though you won't hear fundamentals up there, you'll find that kind of bandwidth makes a difference in reproducing transients and instrumental attacks. In our more expensive 8 k and 9 k loudspeakers two of these EMIT k's are used - one in front and one in the rear - for true dipolar dispersion and superior imaging.

 

Reference Standard 7 Kappa

The 7-Kappa is a stylish 12" three-way floor standing loudspeaker system. It's cast frame woofer utilizes our graphite fiber reinforced polypropylene cone coupled directly to the superb Plydome k, a 3" soft polypropylene dome. And improved EMIT k tweeter uses the same light diaphragm and neodymium magnets as our other Kappa speakers. These drivers are housed in a handsome cabinet which, with its rounded front and rear vertical edges, looks right at home with the finest furnishings. This combination of larger woofer and greater cabinet volume provides deeper, more powerful bass than the 6 k, along with greater power handling and dynamic range. The enclosures modest footprint contributes to ease of placement - even in confined living quarters.

 

Specifications

Frequency Response:  37 Hz - 45,000 Hz +3 dB

Crossover Frequencies:  800 Hz, 4500 Hz

Power Rating:  40 - 200 watts RMS

Sensitivity:  88 dB at 1 watt/1 meter

Nominal Impedance:  4 to 6 Ω

Drivers

1 x EMIT k tweeter

1 x 3" Edgewound Voice coil Polydome k midrange

1 x 12" Graphite/Polypropylene woofer

Dimensions (H x W x D):  37" x 17" x 12"

Weight:  31,4 kg (shipping)

Infinity 6 Kappa loudspeakers

Kappa is a concept and group of products. Five unique drivers and four loudspeakers that incorporate them. Kappa speakers differ radically from conventional speakers in appearance, underlying design philosophy , and certainly in performance.

Woofer.

A newly developed composite polypropylene/graphite fiber injection molded cone enables Kappa woofers to produce powerful, taut bass.

Mid-range

Utilizing a 3" edgewound voice coil and a powerful magnetic structure, the new Polydome k midrange driver delivers low distortion, exceptional linearuty and fast transient response.

Tweeters

New neodymium magnets and a special ultralight diaphragm extend the EMIT k tweeter's bandwith to beyond 44 kHz. The result is incredibly fast transients within the audible frequency ranhe.

Network.

Kappa crossovers are computer designed, then carefully handtuned during critical listening sessions. Components are chosen for their electrical excellence and musicality.

 

Reference Standard 6 Kappa

The 6 Kappa is a monitor-size loudspeaker that performs properly on the bookshelf or, with its optional pedestal, the floor. Low frequencies are reproduced by our 10" graphite/polypropylene woofer, mids are handled by our new 3" Polydome k and high frequencies are handled by our improved EMIT k. in virtually all aspects of performance, aside from extreme bass extension, the 6 k surpasses European and American monitor systems costing up to three times the price. The linearity of its Kappa drivers and their integration - through a high quality computer optimized crossover network - provide for notably higher resolution than is possible with conventional drivers. The 6 k is a fitting complement to the best electronics and signal sources and forms the foundation of an affordable perfectionist audio system.

 

Specifications

Frequency Response:  39 Hz - 45,000 Hz +3 dB

Crossover Frequencies:  800 Hz, 4500 Hz

Power Rating:  30 - 150 watts RMS

Sensitivity:  88 dB at 1 watt/1 meter

Nominal Impedance:  4 to 6 Ω

Drivers

1 x EMIT k tweeter

1 x 3" Edgewound Voice coil Polydome k midrange

1 x 10" Graphite/Polypropylene woofer

Dimensions (H x W x D):  25" x 15" x 10,5"

Dual C 901 cassette deck

Auto-reverse cassette deck

Dual's first cassette deck, the 901, incorporates every refinement you would expect of an audio component made by Dual; the precision engineering; the clean, understated design, and the quality of materials and German craftsmanship.

It also the first precision cassette deck to incorporate the convenience of automatic revers, continuous playback and bi-directional recording. Significantly, it is the first time Dual's high level of performance and reliability has been available to cassette tape recording.

 

The 901's automatic reverse-system makes it possible to play both sides of a cassette without turning it over. Continuous-play additionally permits a cassette to repeat until the machine is shut off. Recording can be bi-directional.

A photoelectric monitor actuates reversal and shuts off without drag or friction in the tape.

The 901's drive system is unique; using the time-tested Dual Continuous-Pole synchronous motor, it has separate, precision-ground belts to drive the capstan and take-up preventing tape tension variations from affecting tape speed.

The ballistically-damped VU meters of the 901 are typical of its electronic refinements. They are engineered to the exact standards specified for professional equipment.

Optimum usage of the Dolby noise reduction system is assured by a built-in test oscillator which permits precise adjustment to the magnetic characteristics of different tape types.

Other features of the 901 include:

Automatic Level Control as well as a Peak level Indicator to augment the VU meters.

 

Specifications

Tape Speed:  4,76 cm/s

Deviation from Correct Speed:  less than 1%

Wow and Flutter:

DiN 45 507 :  less than 0,12%

WRMS :  less than 0,09%

Frequency Response; 

Standard Tape :  30 - 14,000 Hz

CrO₂ tape :  30 - 16,000 Hz

Dynamic Range

IEC A-Curve :  better than 51 dB

Dolny NR :  better than 60 dB

Distortion (Ref. To 0 dB VU at 333 Hz):  less than 2%

Oscillator :  85 kHz, Push-pull Oscillator

Erasure:  better than 70 dB

Channel Separation:

Between Directions :  better than 60 dB

Between Stereo Channels :  better than 30 dB

Inputs

Mic :  0,22 mV

Radio :  0,22 mV (DIN)

RCA :  0,65 mV

Outputs:

Radio :  0,75 V (DIN)

RCA :  0,75 V

Fast Winding Time:  60 sec for C 60 cassette

Semiconductors:  4 ICs; 3 FET; 31 Transistors; 38 Diodes

Power Requirements:  110 - 130 V or 220 - 240 V, AC 50/60 Hz

Power Consumption:  approx 60 Watts

Dimensions (W x H x D):  420 x 122 x 281 mm

Weight:  6,5 kg

Dual 601 turntable

Precision and performance with the Dual 601. 

Single-play belt-drive automatic turntable

Dual's first medium-priced single-play turntable is also the first Dual to use belt drive. The drive system consists of an 8-pole synchronous motor, developed especially for the 601, and a precision belt which runs directly from the drive shaft to a flywheel rotor beneath the platter. The motor's absolute speed constancy, its exceptional smoothness, and the isolation of the platter from the motor combine to reduce wow, flutter and rumble to an insignificant level.

 

The 601 also features a special anti-skating calibration for CD-4 as well as for conical and elliptical styli.

Other unique features and capabilities include;

low capacitance tonearm leads for full compatibility with CD-4 cartridges;

a 1" dynamically balanced platter, die-cast of non-magnetic alloy;

continuous-play selector which allows the tonearm to play a record once or repeatedly;

and flawless tracking at as low as 0,25 gram.

 

Specifications

Drive:  Dual 8-pole synchronous motor through precision flat belt to platter base.

Platter:  Non-magnetic, dynamically balanced, detachable

Diameter :  305 mm

Weight:  1,3 kg (Platter with flywheel drive, 2,1 kg)

Speeds:  33-⅓ and 45 rpm

Pitch Control Variation: Adjustment range of approx. 1 semitone (approx. 6%) at both platter speeds

Speed Control (Monitoring):  with illuminated stroboscope for all platter speeds, adjustable to 50 or 60 Hz

Illuminated Strobe Sensitivity for Speed  Deviation of 0,1%:

3 bars/min at 50 cps

3,6 bars/min at 60 cps

Wow and Flutter:  less than ±0,08% (According to DIN 45 507)

Rumble (according to DIN 45 500)

Unweighted :  better than 42 dB

Weighted :  better than 63 dB

Tonearm:  Torsion-resistant tubular aluminium tonearm in self-adjusting pivot bearing

Effective Length of Tonearm:  222 mm

Offset Angle:  25° 20'

Tangential Tracking Error:  0,16 degree/cm

Tonearm Bearing Friction (related to stsylus tip)

Vertical :  less than 0,07 mN (0,007 p)

Horizontal :  less than 0,16 mN (0,016 p)

Stylus Pressure:  0 - 30 mN (0 - 3 g). Infinitely variable with 1 mN (1/10 g) calibration from 0 - 15 mN (0 - 15 g) operable from 2,5 mN (0,25 h) stylus pressure up

Cartridge Holder:  removable, accepting any cartridge with 1.2" mounting and weight from 2 to 10 g (including mounting hardware)

Adjustable Overhang:  5 mm

Power Requirements:  110 - 130 V or 220 - 240 V, AC 50/60 Hz

Power Consumption:  approx 10 Watts

Dimensions (W x H x D):  420 x 148 x 365 mm

Weight:  7,6 kg

Sony PS-T20 turntable

 

Popularly-priced direct drive full-automatic turntable with outside-mounted stroboscope

Turntable System T20 Features for Better Quality:

Direct drive magnedisc servo systems

Full-automatic system

High torque BSL motor. Smooth revolution and instant start can be obtained with this motor

Outside-mounted stroboscope for speed regulation, good styling, and heavy platter

Pitch control can be adjusted ±4%

Tonearm employs anti-skating system for improved tracking ability

Overhang adjustment is simply made with overhang gauge on back of mat

Easy Operation Features:

Front control system with piano-key switches allows operation with dust cover closed

Head shell holder and removable dust cover

 

Specifications

Turntable Platter:  313 mm (12-3/8"), aluminum-alloy diecast

Motor:  Linear BSL motor (Brushless and Slotless)

Drive System:  Direct drive, Magnedisc servo control

Speeds:  33-⅓ and 45 rpm

Pitch Control Range:  ±4%

Wow and Flutter:

DIN :  ±0,065%

WRMS :  0,04%

Signal-to-Noise Ratio :  68 dbb (DIN-B)

Automatic System:  lead-in, return, reject, repeat

Tonearm Type: Statically Balanced, universal

Pivot-to-Stylus Length:  216,5 mm, (8-1/2")

Overall Arm Length:  300 mm (11-7/8")

Overhang:  16,5 mm (21/32")

Tracking Error:  +3°, -1°

Tracking Force Adjustment Range:  0 - 3 g

Shell Weight:  7,5 g

Cartridge Weight Range:  4 - 10 g

General

Power Requirements:  120, 220 V AC adjustable 50/60 Hz (240 V AC 50 Hz, or 120 V AC 60 Hz)

Power Consumption:  6 W or 8 W

Dimensions (W x H x D):  445 x 140 x 375 mm (17-1/2" x 5-1/2" x 14-3/4")

Weight:  5,5 kg (12 lb 2 oz)

Sony STR-V6 receiver

The STR-V6 stereo receiver is designed for those whit critical listening tastes and power-hungry musical appetites. It's precision engineered for those who demand formidable performance capabilities. But it's also human-engineered for those who insist on smooth uncomplicated operation. In other words, the V6 is Sony-designed Sony-produced. Which means maximum performance convenience and value.

 

Outstanding FM Tuner Design

From MOS FET RF front end amplifier to uni-phase IF filters and FM bandwidth selector the FM tuner section is designed for maximum performance. Outstanding FM quality with all types of broadcast signal conditions, whether you're in a weak, distant signal area or crowded, metropolitan dial location. An enclosure surrounds the MOS FET front-end circuitry including the integral 5-gang tuning capacitor and precision-built local oscillator. This combination results in higher frequency stability and exceptionally accurate dial calibration. In addition, the MOS FET front-end helps provide the V6 with its steep quieting slope, high interference rejection, high signal overload capability and low noise. It also assures high stability with both weak and strong signals.

 

High Selectivity, Low Distortion

The Sony V6 tuner section incorporates advanced circuitry to achieve excellent performance in the critical areas of selectivity, Total Harmonic Distortion and Stereo Separation. Our specially-designed, uni-phase 4-element ceramic filters are employed in the IF stage differential amplifier, together with five stages of limiters. This design assures a wide, flat passband, a smooth response slope and uniform phase characteristics. Which enables us to achieve high selectivity and low distortion, as well as excellent capture and Signal-to-Noise Ratios. And to maintain exceptionally wide stereo separation, we've included a Phase-Locked-Loop IC in the multiplex decoding stage.

To maintain consistently excellent FM sound quality, the V6 also includes a "selectivity switch", or FM IF bandwidth selector  - so you don't have to settle for less than the best, even under adverse signal conditions. In the "normal" position, the lowest distortion and widest stereo separation can be achieved. But when alternate channel interference is a problem, the "narrow" position provides higher selectivity , lower noise.

 

Accurate Tuning

But the best in FM performance and value doesn't stop here. The V6 assures the ulmost tuning accuracy and convenience, too. First, there's the precision of frequency linear FM and AM dial calibration, which makes station selection easy. Next, there's the convenience of smooth, flywheel-coupled tuning action, plus the silence provided by interstation muting as you tune up and down the band. And to help you pinpoint the desired station, the V6 also features a center-station tuning meter, with a second meter that can be switched for signal strength indication.

 

Low-Noise Preamp Circuitry

The direct-coupled preamplifier section, which includes our newly developed, low-noise transistors, provides wide, flat frequency response for all high-level inputs, exceptionally accurate RIAA equalization and excellent Signal-to-Noise Ratios with all input sources. The advanced preamp circuitry also yields a phono overload capability of 200 mV - assuring more than adequate headroom with any of today's high-output phono cartridges. And with any type of cartridge you use, you can rely on precise RIAA equalization (±0,5 dB) which is maintained through a special DC negative feedback circuit, independent of voltage fluctuations.

 

Precision Control

The V6 provides for flexible sound system operation and precision controls. The clean, logically-arranged control panel allows precise sound adjustment, with maximum control convenience. A large easy-to-grasp, stepped-attenuator volume control has 41 detent positions, for smooth, yet positive control action. The studio-type volume control also eliminates tracking error between channels, a common problem with conventional potentiometers. The result is accurate left/right-channel level adjustment. For precise tonal compensation, the V6 features negative-feedback, stepped-attenuator bass and treble controls, each with 11 dent positions. There's also a tone control defeat position, for absolutely flat response with the tone controls switched out of the circuit. And for effective program-source noise elimination, the V6 is equipped with high and low filters. A loudness compensation switch is included, too.

When switched in, the loudness circuit provides both high and low frequency boost, for realistic tonal balance at low volume levels.

 

Rugged Power Performance

The V6's direct-coupled DC power amplifier section delivers clean, rugged power. Enough power to drive even inefficient speaker systems to realistic volume levels. With plenty of power reserve to handle sharp transient attack tones with clarity, and without overload clipping. At all output levels and with all types of musical content, the V6 delivers authoritative, well-defined bass, and clean, transparent midrange and treble.

To accurately monitor power being fed to speakers, the V6 features two power output meters, which indicate output levels in watts per channel, from 0,03 to 200 watts. The highly visible, easy-to-read meters offer maximum overload waring. In addition, they help achieve accurate stereo-channel balancing at both high and low output levels.

Accuracy is typical of the entire power amp design, from its differential comparator input stage to its parallel connected, true complementary-symmetry output stage, with positive and negative power-supply voltages. A design which assures low noise, high phase linearity and especially impressive low-frequency performance. The V6 power amp section also incorporates a high efficiency, high-regulation toroidal-coil transformer and two 10,000 µf capacitors. This combination assures the utmost operating stability and provides the V6 with a clean, effortless "feel"  of power across the entire frequency spectrum

 

Specifications

Power Amplifier Section

Continuous Power Output RMS:  115 watts per channel minimum RMS at 8 Ω  from 20 - 20,000 Hz  with no more than 0,07% T.H.D.

Total Harmonic Distortion :  no more than 0,07% at rated output

Intermodulation Distortion (60 Hz : 7 kh = 4 : 1):  0,07% at rated output

Damping Factor:  40 at 8 Ω

Residual Noise:  0,3 µV

Speaker Outputs:  Two per channel

Headphone Outputs : One

Preamplifier Section

Input Sensitivity/Impedance

Phono :  2,5 mV/50 k Ω

Aux, Tape:  150 mV/100 k Ω

Phono Overload:  200 mV

Output Level/Impedance

Rec Out :  250 mV/ 4,7 k Ω

Frequency Response;

Phono :  RIAA ±0,5 dB

Aux, Tape :  5 Hz - 50 kHz +0 -2,0 dB

Tone Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Filters:

High :  6 dB /oct above 9 kHz

Low :  6 dB/oct below 50 Hz

Signal-to-Noise Ratio (IHF-A weighted)

Phono 2,5 mV input :  75 dB

Phono 10 mV input :  87 dB

Aux, Tape 150 mV input :  100 dB

FM Tuner Section

Antenna:  300 Ω  Balanced; 75 Ω  unbalanced

Usable Sensitivity:  9,3 dBf (1,6 µV)

50 dB Quieting Sensitivity:

Mono :  14,2 dBf (2,8 µV)

Stereo :  37,3 dBf (40,0 µV)

Signal-to-Noise Ratio

Mono :  75 dB

Stereo :  70 dB

Capture ratio:  1,0 dB

Alternate Channel Selectivity:

Narrow Bandwidth Position :  80 dB

Normal Bandwidth Position :  50 dB

Image Rejection:  80 dB

IF Rejection:  100 dB

Spurious Rejection:  100 dB

AM Suppression:  60 dB

Total Harmonic Distortion

Mono :  0,08% at 1 kHz

Stereo :  0,15% at 1 kHz

Intermodulation DIstortion Distortion

Mono :  0,08%

Stereo :  0,15%

Frequency Response:  30 Hz - 15 kHz +0,2 -1,5 dB

Stereo Separation

At 100 Hz :  40 dB

At 1 kHz ;  48 dB

At 10 Hz :  43 dB

Subcarrier Suppression :  60 dB

AM Tuner Section

Sensitivity:  100 µV (ext antenna)

Signal-to-Noise Ratio :  50 dB

Selectivity:  35 dB

Image Rejection:  40 dB

IF Rejection:  40 dB

General Specifications

Power Requirements:  AC 120 V 60 hz

Power Consumption:  200 W

AC Outlets:

Unswitched :  1 x 300 W max

Switched :  1 x 100 W max

Dimensions (W x H x D):  20-1/2" x 7-9/16" x 17-3/4"

Weight:  47 lb 12 oz

 

Vandersteen 1B Model One loudspeakers

The Vandersteen Model One

A precisely aligned dynamic design, blending common-sense innovations with proven technology, gives the Vandersteen Model One many advantages:

Computer-optimized driver placement and cabinet design virtually eliminate the interference patterns usually associated with multi-way speakers

Lack of out-of-phase rear wave cancellations and interpanel interference allows many placement options in the listening room

Basic design concepts produce exceptional efficiency, extended dynamic range, and a point-source wave front for correct sound-stage replication

Overall polar response pattern resembles the studio microphone pick-up pattern for better imaging and a broader listening area.

High efficiency and smooth impedance curves provide unlimited amplifier compatibility

Driver design eliminates "edge clamping" distortions present in all planar diaphragm loudspeakers

 

By correcting for "real-world) conditions - such as cabinet losses, thermodynamic losses, and active/passive transfer anomalies - the Vandersteen Model One function more like an ideal speaker than do conventional designs. Such performance is possible because computer analysis guided the driver selection process, and each speaker was tested for minimal cone break-up, internal diffraction, and out-of-band phase irregularities. An innovative circuit design permits these drivers to operate in absolute phase with each other, preserving the dimensions of live music. The result; a level of sonic purity and listening enjoyment that far exceeds the modest cost.

 

The Active Components

Custom manufactured drivers (an 8" die-cast basket with curvilinear polycone woofer and 1" dual chamber polymer dome tweeter) ensure linear operation well beyond the cutoff frequency for near seamless blending. The woofer system, including rear slot loading, comprises a fourth-order filter. The tweeter incorporates low moving mass for excellent transient response and extended bandwidth.

 

The Crossover

The transient perfect first-order dividing network uses air core inductors with polypropylene and polycarbonate capacitors in the signal path. Phase compensating networks allow ideal transient response, impedance-compensating networks avoid the frequency response irregularities associated with typical crossovers.

 

The Construction

The Vandersteen Model One is constructed entirely from a wood product far denser than particle board to minimize induced resonances. FFT (Fast Fourier Transform)analysis during all stages of assembly guarantees that each speaker matches its mate within .5 dB for precise imaging.

 

Specifications

Type:  Two-way loudspeaker

Drivers

LF :  8" polycone woofer

HF :  1" polymer-dome tweeter

Recommended Amplification:  20 to 100 watts per channel

Impedance:  6,8 Ω  ±2 Ω

Efficiency:  90 dB with 1 watt of pink noise input at 1 meter on axis

Frequency Response;  38 to 20,000 Hz ±3 dB; 44 to 18,000 Hz ±1,5 dB

Dispersion

38 to 15,800 Hz ±3 dB at 90 degrees off axis

Crossover Frequency:  2,000 Hz 6 dB/octave slope

Dimensions (H x W X D):  36" x 12" x 10"

Weight:  44 lbs each

Yamaha CA-800 amplifier

Yamaha CA-800 stereo integrated amplifier offers, at a surprisingly agreeable features. Like the more expensive Yamaha CA-1000, the CA-800 has been created with emphasis on its primary function, that is to amplify the stereo signals from different program source components with the least possible distortion and without any other form of undesirable coloration. It accomplishes this objective by the use of a direct-coupled OCL complementary power amplifier, a plus/minus dual power supply system, a 3-stage direct-coupled tone control amplifier, and many other advanced features. You will note immediately that the CA-800 is designed with typical Yamaha attention to fine detail.

 

Direct-Coupled OCL Pure Complementary Stereo Power Amplifier for High Power and Low Distortion

The power amplifier of the CA-800 is the most advanced made today. This is the all-stage direct0coupled OCL pure complementary design which provides flat, linear amplification over an extremely wide bandwidth. Power for its operation is derived from an advanced plus/minus dual power supply system that combines an over-sized transformer and a pair of large 6,800 µF capacitors. Moreover, the power supply system drives all amplification stages, with the exception of the power amplifier, at a constant voltage. Such advanced design characteristics contribute greatly to the CA-800's low-range frequency response and stability, as well as to excellent performance specifications. These include RMS continuous power output of 45 watts per channel into 8 ohms, 20 - 20,000 Hz, both channels driven at 0,1 T.H.D., or 55 watts into 8 Ω , 1 kHz each channel driven, also at 0,1% T.H.D..pure, clean sound reproduction - quite enough to fill a large listening room - is only one solid reason to choose the CA-800.

 

Class-A Stereo Power Amplifier for Even Lower Distortion.

While the CA-800 is complete with a large stereo power amplifier of the Class-B operation like any other stereo amplifier available today, it also haas an exclusive feature; a switch to alter the circuit configuration of the power amplifier and convert it to a quality Class-A power amplifier. The difference is significant. A Class-B amplifier is a very effective design for transitor-type amplifiers, and delivers a high power output. A Class-A amplifier, in comparison, is less efficient, yet compensates for its inefficiency by virtually eliminating crossover distortion, which is the major source of distortion, which is the major source of distortion in the high frequency range for a transistor amplifier.

These figures underscore the importance of a Class-A amplifier; the RMS continuous power output is reduced to 10 watts per channel into 8 Ω , both channels driven at a T.H.D. of 0,1% over 20-20,000 Hz. That same distortion figure is reduced to 0,02% or less over 20 - 20,000 Hz at an output of one watt, or even to 0,015% - the very limit of the measuring instruments themselves - at 20 kHz at an output of 8 watts. Obviously, there is simply no better amplifier type to reproduce the transparent, delicate sounds of string instruments at a low volume level. Another conclusion is equally apt; the CA-800 is a most versatile stereo amplifier.

 

Four-Stage Direct-Coupled Phono Equalizer Amplifier for Transparent Tonal Quality

Since the phono equalizer enables the reproduction of the most popular source of music, the disc record, it is the key component of any hi-fi preamplifier, in the CA-800, this component is of the very highest quality, an advanced 4-stage direct-coupled amplifier employing selected low noise transistors. The virtures of this amplifier are three-fold; One; it is capable of handling a phono input signal of up to 310 mV, or approx. 100 times greater that what is required to drive it to the full output (input sensitivity is 3 mV). This capability is significant insomuch as that it practically exceeds the wide dynamic range offered these days by the latest and most advanced disc cutting techniques, as well as the new and improved pickup cartridges. Thus, you can be assured that every subtle shade of sound and every powerful burst of sound cut into your records will be reproduced without distortion. Secondly, the phono equalizer has an excellent Signal-to-Noise Ratio of 80 dB or better. This also contributes to the transparency of reproduced sound. Thirdly, absolute accuracy in the reproduction of stereo records is assured, since the phono equalizer provides an almost identical facsimile of the RIAA disc playback characteristics, keeping deviation from it to within a tolerance of ±0,2 dB.

 

Specifications

Power Output

Dynamic Power IHF

Class-B :  150 watts (4 Ω ); 130 watts (8 Ω )

Class-A :  20 watts (8 Ω )

Continuous RMS Power

Each Channel Driven at 1,000 Hz

Class-B :  70/70 watts (4 Ω ); 55/55 watts (8 Ω )

Class-A :  10/10 watts (8 Ω )

Both Channel Driven :   at 1,000 Hz

Class-B :  60 +60 watts (4 Ω ); 50 + 50 watts (8 Ω )

Class-A :  10 + 10 watts (8 Ω )

Both Channel Driven at 20 to 20,000 Hz

Class-B :  50 + 50 watts (4 Ω ); 45 + 45 watts (8 Ω )

Class-A : 10  + 10 watts (8 Ω )

Total Harmonic Distortion

Power Amplifier Only

Class -B :  less than 0,1% (at rated power): 0,04% (at 1 watt)

Class-A :  less than 0,1% (at rated power): 0,02% (at 1 watt)

Preamp Only Phono to Pre Out

Class-B :  less than 0,1% at rated power

Class-A :  less than 0,1% at rated power

Pream Only Aux to Pre Out :

Class-B :  less than 0,02% at rated power

Class-A :  less than 0,02% at rated power

Overall Aux to Power Output

Class-B :  less than 0,1% at rated power

Class-A :  less than 0,05% at rated power

Intermodulation Distortion (70 Hz : 7 kHz = 4 : 1 SMPTE method)

Power Amplifier Only

Class-B :  less than 0,1% (8 Ω ) at rated power

Class-A :  less than 0,1% (8 Ω ) at rated power

Power Amplifier Only

Class-B :  less than 0,05% (8 Ω ) at 1 watt

Class-A :  less than 0,05% (8 Ω ) at 1 watt

Overall (Aux to Power Output)

Class-B :  less than 0,1% (* Ω ) at rated output

Class-A :  less than 0,1% (8 Ω ) at rated output

Power bandwidth (IHF distortion 0,5% const)

Class-B :  5 to 70,000 Hz

Class-A ;  5 to 100,000 Hz

Load Impedance

Class-B :  4 to 160

Class-A :  (4 ) to 8 to 160

Damping Factor (8 Ω )

Class-B :  70 at 1,000 Hz

Class-A :  70 at 1,000 Hz

Frequency Response (at 1 watt)

Overal Tuner, Aux, Tape Power Bandwidth to Power Output:  10 to 50,000 Hz +0,5 dB -1 dB

Overall Mic to Power Output :  20 to 20,000 Hz +0,5 dB -2 dB

Power Amplifier Only :  10 to 100,000 Hz +0 dB -1 dB

Deviation from RIAA :  30 to 15,000 Hz +0,2 dB -0,2 dB

Channel Separation ( at rated power, 1,000 Hz)

Power Amplifier Only :  better than 60 dB

Overall from Phono 1, 2 :  better than 50 dB

Overall from Tuner, Aux, Tape Pb :  better than 50 dB

Overall from Mic :  better than 50 dB

Hum and Noise (IHF, Closed circuit A Network)

Overall from Phono 1, 2 :  better than 80 dB

Overall from Mic :  better than 70 dB

Overall from Tuner, Aux, Tape Pb :  better than 90 dB

Power Amplifier Only :  better than 100 dB

Volume at Minimum :  better than 90 dB

Input Sensitivity/Impedance (at rated power, 1,000 Hz)

Phono 1 :  3 mV/30 k Ω , 50 k Ω , 100 k Ω

Phono 2 :  3 mV/50 k Ω

Phono 1, 2 Max. Input Capability :  310 mV (T.H.D. 0,1%)

Mic :  2,5 mV/ 50 k Ω

Mic Max. Input Capability :  245 mV (T.H.D. 0,1%)

Tuner , Aux 1,2 :  120 mV/40 k Ω

Tape Pb A, B :  120 mV/40 k Ω

Power Amplifier Input  :  775 mV/ 40 k Ω , 345 k Ω (Class-A)

Output Level / Impedance (at rated power, 1,000 Hz)

Tape Rec Out A, B ;  120 mV/ 2 k Ω

Pre Out :  775 mV/ 2 k Ω ; 3,000 mV (Max. Output T.H.D. 0,1%)

Tone Controls

Bass :  ±15 dB at 50 Hz

Treble :  ±10 dB at 10 kHz

Filters

Low :  -3 dB at 20 Hz, 70 Hz (12 dB/oct)

High :  -3 dB at 6 kHz ; 12 kHz (6 dB/oct)

Loudness Control (Continuous Loudness Vol. At Minimum):  +10 dB at 100 Hz; +5 dB at 10 kHz

General

Semiconductors:  2 FETs; 49 Transistors; 12 Diodes; 4 Zener Diodes

Power Requirements:  AC 110 - 120 V, 220 - 240 V 50/60 Hz

Pc :  300 watts Max; 190 watts Rated

AC Outlets :  2 x Switched; 2 x Unswitched

Dimensions (W x H x D):  436 x 144 x 323 mm (17-1/4" x 5-3/4" x 12-3/4")

Weight:  13,5 kg (29,7 lbs)

Aiwa SA-A10 amplifier

Aiwa Mini System M-101 -Stereo Integrated Amplifier

Small in size but in sound, this BTL-connected OCL integrated amplifier power up to 4 external components of AC or DC power, yet lacks none of the essentials for clear, low-distortion sound.

For stable current regulation at any output level, a high-efficiency toroidal power transformer is incorporated.

Want to listen to discs? No problem, the SA-A10 also features a built-in phono equalizer stage for natural rendition of high-performance MM cartridges. Beside the independent bass/treble controls, a loudness compensation switch is provided to give you more dynamic sound quality even at low volume listening. And watch while the 5-point logarithmic LED peak indicators display changes in power output.

 

 Features:

Rear panel AC outlets (two)

Stereo headphone jack

Balance control

Power On indicator LED

Quick-touch speaker connection terminals

 

Specifications

Output Power:  15 W +15 W at 4 Ω  from 20 - 20,000 Hz with no more than 10% T.H.D.

Total Harmonic Distortion :  0,5% at 1 W, 8 Ω

RIAA Deviation:  35 - 20,000 Hz ±1 dB

Damping Factor:  20 at 1 kHz, 8 Ω

Frequency Response:  20 Hz - 35,000 Hz +1 -3 dB

Signal-to-Noise Ratio

Phono :  72 dB

Tuner, Aux :  85 dB

Tone Controls

Bass :  ±8 dB at 100 Hz

Treble :  ±8 dB at 10 kHz

Power Source:  240 V, 50.60 Hz

Dimensions (W x H x D):  210 x 55 x 205 mm (8-5/16" x 2-3/16" x 8-1/16")

Weight:  2,4 kg (5,3 lbs)