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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





Visualizzazione post con etichetta KYOCERA. Mostra tutti i post
Visualizzazione post con etichetta KYOCERA. Mostra tutti i post

Kyocera R-861

If receivers have something of a bad reputation among serious audiophiles, there's a good reason, in Japan, where everybody owns compnent high fidelity, nobody owns one-piece receivers. In fact, North America may be the only place where receivers represent a majority of the market.
For most Japanese audio engineers, receivers are strictly for export. They're not serious components at all. So receivers are designed by the second-string engineers. This explains why even companies with decent separates tend to load their receivers up with meaningless knobs, buttons, and displays.
The irony here is that  there's no reason why receivers must be second-class components. There's nothing to prevent a company from using the same common sense and judgement in receiver design as they exercise with separates. This is the guiding philosophy behind Kyocera receivers.

 MOS FETS in the Driver Stage
A rarity in receivers, Metal-Oxide-Semiconductor Field Effect Transistors (MOS FETs) are used in the driver stages of all Kyocera receivers for their superior transient response and isolation characteristics.
Pre-Out/Main-In jacks
While it is hard to find a receiver with pre-amp output/ main-amp input jacks nowadays,, all Kyocera receivers have them. So you can connect outboard signal receiver as part of an elaborate multi-amp system. That's particularly important considering the multi-room capability of the Kyocera Full-System Remote Control network.
 The Kyocera R-861
Features
100 watts per channel (continous RMS both channels driven into 8 ohms from 20 Hz to 20 kHz with no more than 0,02% Total Harmonic Distortion
Compatible with Kyocera Full System Remote Control network
Manual/electronic volume control
Parametric bass, midrange and treble controls
Subsonic filter at 20 Hz with 12 dB/octave slope
High filter
Two tapemonitors with dubbing
Pre-amp Output/Main-amp Input jacks
MOS FETs in the amplifier driver stage for better dynamic performance
Toroidal transformer
Low-feedback design for reduced transient intermodulation distortion
Oxygen-Free Copper (OFC) wiring fo reduced noise
Moving Magnet/Moving Coil phono input stage
Female banana jacks bypass speaker switching for straight-wire-with-gain circuit
Quartz frequency synthesis tuning
FM front end with MOS FETs and High-Q varicaps for minimum interference
Ceramic IF filters for high selectivity, low distortion
Automated  IF bandwidth switching (Wide/Narrow) adapts to your reception conditions
High-frequency FM comparator for reduced noise
FM quadrature detector for low distortion
Switchable de-emphasis for Dolby FM broadcasts
Chopper type FM stereo demodulator for improved stereo separation
High blend switch for better sound on weck FM stations
7AM + 7 FM station presets
Specifications
Power Output RMS (both ch. Driven into 8 Ω with no more than 0,02% T.H.D., 20 Hz - 20 kHz):  100 W/ch
Dynamic Short-Term Power (at 1 kHz):
120 W/ channel at 8 Ω
180 W / channel at 4 Ω
230 W/ channel at 2 Ω
Total Harmonic Distortion (at rated power):  0,02%
Power Bandwidth (-3 dB re rated power):  10 Hz - 60 kHz
Intermodulation Distortion (at rated output,SMPTE):  0,02%
Slew Rate:  50 V/usec
Rise Time:  1,0 usec
Dynamic Headroom , 8 Ω :  1,0 dB
Input Sensitivity/Impedance:
Phono MC  :  125 µV/100 Ω
Phono MM  :  2,5 mV/47 k Ω/100 pF
Others :  150 mV/30 k Ω
Phono Input Overload  1 kHz, 0,5% T.H.D.:
phonoMC :  8 mV
PhonoMM :  150 mV
Signal-to-Noise Ratio (IHF short circuited, A-weighted, rated output):
Phono MC :  68 dB
Phono MM :  88 dB
Others :  100 dB
Turnover Frequencies:
Bass Control :  100 - 500 Hz
Midrange Control :  0,5 - 2,0 kHz
Trable Control :  2 - 10 kHz
High Filter (6 dB/oct) at 10 kHz :  -6 dB
Subsonic Filter (12 dB/oct) aat 188 Hz :  -3 dB
FM Usable Sensitivity (mono):  9,8 dBf
FM 50 dB Quieting Sensitivity
Mono :  14,8 dBf
Stereo :  35,8 dBf
FM Capture Ratio (Normal IF):  1,0 dB
FM Distortion, 1 kHz, Normaal IF
Mono :  0,06%
Stereo :  0,07%
FM Stereo Separation, Normal IF, 1 kHz:  58 dB
FM Frequency Response (30 Hz - 15 kHz):  +0 dB/-0,5 dB
FM Signal-to-Noise  Ratio, A -weighted
Mono :  82 dB
Stereo :  76 dB
FM Alternate Channel Selectivity:
Normal IF :  40 dB
Narrow IF :  81 dB
FM Spurious Rejction:  95 dB
FM IF Rejection:  120 dB
FM Image Rejection:  85 dB
FM Subcarrier product Ratio:  65 dB
Power Consumption:  320 W
Dimensions (W x H x D):  460 x 132 x 360 mm (18-1/8" x 5-3/16" x 14-3/16")
Weight:  12,3 kg (27 lbs)

Kyocera R-661


The Kyocera R-661
Features
70 watts per channel (continous RMS both channels driven into 8 ohms from 20 Hz to 20 kHz with no more than 0,02% Total Harmonic Distortion
Compatible with Kyocera Full System Remote Control network
Manual/electronic volume control
Parametric bass and treble controls with continuously variable turnover frequency for sensitive and precise tonal adjustment
Subsonic filter at 20 Hz with 12 dB/octave slope
High filter
Two tapemonitors with dubbing
Pre-amp Output/Main-amp Input jacks
MOS FETs in the amplifier driver stage for better dynamic performance
Toroidal transformer

Low-feedback design for reduced transient intermodulation distortion
Oxygen-Free Copper (OFC) wiring fo reduced noise
Moving Magnet/Moving Coil phono input stage
Female banana jacks bypass speaker switching for straight-wire-with-gain circuit
Quartz frequency synthesis tuning
FM front end with MOS FETs and High-Q varicaps for minimum interference
Ceramic IF filters for high selectivity, low distortion
Wide/Narrow IF bandwidth switch adapts to your reception conditions
High-frequency FM comparator for reduced noise
FM quadrature detector for low distortion
Chopper type FM stereo demodulator for improved stereo separation
High blend switch for better sound on weck FM stations
7AM + 7 FM station presets

Specifications
Power Output RMS (both ch. Driven into 8 Ω with no more than 0,02% T.H.D., 20 Hz - 20 kHz):  70 W/ch
Dynamic Short-Term Power (at 1 kHz):
80 W/ channel at 8 Ω
110 W / channel at 4 Ω
140 W/ channel at 2 Ω
Total Harmonic Distortion (at rated power):  0,02%
Power Bandwidth (-3 dB re rated power):  10 Hz - 60 kHz
Intermodulation Distortion (at rated output,SMPTE):  0,02%
Slew Rate:  50 V/usec
Rise Time:  1,0 usec
Dynamic Headroom , 8 Ω :  1,0 dB
Input Sensitivity/Impedance:
Phono MC  :  125 µV/100 Ω
Phono MM  :  2,5 mV/47 k Ω/100 pF
Others :  150 mV/30 k Ω
Phono Input Overload  1 kHz, 0,5% T.H.D.:
Phono MC :  8 mV
Phono MM :  150 mV
Signal-to-Noise Ratio (IHF short circuited, A-weighted, rated output):
Phono MC :  64 dB
Phono MM :  82 dB
Others :  100 dB
Turnover Frequencies:
Bass Control :  100 - 500 Hz
Trable Control :  2 - 10 kHz
High Filter (6 dB/oct) at 10 kHz :  -6 dB
Subsonic Filter (12 dB/oct) aat 188 Hz :  -3 dB
FM Usable Sensitivity (mono):  10,1 dBf
FM 50 dB Quieting Sensitivity
Mono :  15,5 dBf
Stereo :  36,5 dBf
FM Capture Ratio (Normal IF):  1,0 dB
FM Distortion, 1 kHz, Normaal IF
Mono :  0,07%
Stereo :  0,10%
FM Stereo Separation, Normal IF, 1 kHz:  55 dB
FM Frequency Response (30 Hz - 15 kHz):  +0 dB/-0,5 dB
FM Signal-to-Noise  Ratio, A -weighted
Mono :  80 dB
Stereo :  74 dB
FM Alternate Channel Selectivity:
Normal IF :  40 dB
Narrow IF :  75 dB
FM Spurious Rejction:  88 dB
FM IF Rejection:  110 dB
FM Image Rejection:  68 dB
FM Subcarrier product Ratio:  65 dB
Power Consumption:  210 W
Dimensions (W x H x D):  460 x 132 x 360 mm (18-1/8" x 5-3/16" x 14-3/16")
Weight:  11,7 kg (25 lbs)

Kyocera R-461


The  Kyocera R-461
Features
50 watts per channel (continous RMS both channels driven into 8 ohms from 20 Hz to 20 kHz with no more than 0,02% Total Harmonic Distortion
Compatible with Kyocera Full System Remote Control network
Manual/electronic volume control
Subsonic filter at 20 Hz with 12 dB/octave slope
High filter
Two tapemonitors with dubbing
Pre-amp Output/Main-amp Input jacks
MOS FETs in the amplifier driver stage for better dynamic performance
Low-feedback design for reduced transient intermodulation distortion
Female banana jacks bypass speaker switching for straight-wire-with-gain circuit
Quartz frequency synthesis tuning
FM front end with MOS FETs and High-Q varicaps for minimum interference
Ceramic IF filters for high selectivity, low distortion
6 AM + 6 FM station presets

Specifications
Power Output RMS (both ch. Driven into 8 Ω with no more than 0,02% T.H.D., 20 Hz - 20 kHz):  50 W/ch
Dynamic Short-Term Power (at 1 kHz):
80 W/ channel at 8 Ω
110 W / channel at 4 Ω
125 W/ channel at 2 Ω
Total Harmonic Distortion (at rated power):  0,02%
Power Bandwidth (-3 dB re rated power):  10 Hz - 60 kHz
Intermodulation Distortion (at rated output,SMPTE):  0,02%
Slew Rate:  40 V/usec
Rise Time:  1,5 usec
Dynamic Headroom , 8 Ω :  2,1 dB
Input Sensitivity/Impedance:
Phono MM  :  2,5 mV/47 k Ω/100 pF
Others :  150 mV/30 k Ω
Phono Input Overload  1 kHz, 0,5% T.H.D.:
Phono MM :  150 mV
Signal-to-Noise Ratio (IHF short circuited, A-weighted, rated output):
Phono MM :  80 dB
Others :  95 dB
Turnover Frequencies:
Bass Control :  200 Hz
Trable Control :  5 kHz
High Filter (6 dB/oct) at 10 kHz :  -6 dB
Subsonic Filter (12 dB/oct) aat 188 Hz :  -3 dB
FM Usable Sensitivity (mono):  10,3 dBf
FM 50 dB Quieting Sensitivity
Mono :  17,0 dBf
Stereo :  37,2 dBf
FM Capture Ratio (Normal IF):  1,2 dB
FM Distortion, 1 kHz, Normaal IF
Mono :  0,08%
Stereo :  0,12%
FM Stereo Separation, Normal IF, 1 kHz:  48 dB
FM Frequency Response (30 Hz - 15 kHz):  +0 dB/-1,0 dB
FM Signal-to-Noise  Ratio, A -weighted
Mono :  77 dB
Stereo :  72 dB
FM Alternate Channel Selectivity:
Normal IF :  55 dB
FM Spurious Rejction:  86 dB
FM IF Rejection:  100 dB
FM Image Rejection:  68 dB
FM Subcarrier product Ratio:  58 dB
Power Consumption:  175 W
Dimensions (W x H x D):  460 x 110 x 340 mm (18-1/8" x 5-5/16" x 13-3/8")
Weight:  8,2 kg (18 lbs)

Kyocera PL-910

 The Kyocera PL-910 turntable is not only the top of the Kyocera turntable line, it will stand in audio history as one of the finest turntables ever built. It incorporates the most up-to-date technology and materials to accomplish the age-old goal of all turntable designers; rotational stability and resonance-free performance.
 Consideration has been given to every last detail in the manufacture of this masterpiece, down to the actual construction materials themselves.  The plater, for example, has been manufactured on Fine Ceramics - to be precise, alumina-ceramics-proven to possess hardness qualities close to those of diamond - and vibration - attenuating characteristics far superior to conventional materials such as ordinary aluminum. This Fine Ceramics platter is placed in full planar contact with an aluminum sub-platter of a different resonance frequency, thereby dramatically reducing unwanted resonances. Fine ceramics is used further in the platter spindle and the thrust bearings of the spindle. These extremely hard thrust bearings are capable of supporting the heavy platter without excessive wear, creating an ultra-precise pivot point for extremely smooth rotation.
 The base chassis of the PL-910 is made of Ceramic Compound Resin (CCR) to  isolate the turntable itself from external vibration (mechanical and acoustical feedback). The "howling" normally experienced in the presence of loud signals from large loudspeakers is unheard of in the PL-910.

Although the PL-910 is equipped with a heavily damped powerful Dc-servo brushless motor, the actual drive system is via belt to remove any last possible doubt concering rotational stability.
 Features
Ceramic Compound Resin (CCR) base chassis successfully isolates external vibration.
A high-purity alumina-ceramics platter mounted in full planar contact with an aluminum sub platter with differnt resonance characteristics  creates an effective resonance barrier.
Dual-suspension system separates the turntable and tonearm from the sub-chassis to isolate any possible external sources of vibration.
DC-servo brushless motor belt-drive system.
Heavily-damped motor avoids the creation of internal vibrations. Self-illuminated strobe with on/off switch.
4 mm thick transparent acrylic cover.
Four types of optional arm bases to mount most high quality separate tonearms.
Specifications
Type: belt-drive, double float system
Speeds:  33 and 45 rpm
Platter:
Main-platter:  Made of almina-ceramic
Diameter :  300 mm (11-13/16")
High :  17,2 mm (43/64")
Weight :  3,6 kg (8 lbs)
Sub-platter:  Made of aluminum
Diameter :  260 mm (10 ¼")
Weight :  1,4 kg (3 lbs)
Wow and Flutter:  0,025% (WRMS,JIS)
Signal-to-Noise Raatio:  78 dB (DIN-B) / 60 dB (JIS)
Dimensions (W x H x D):  455 x 190 x 392 mm (18" x 7-1/2" x 15-7/16")
Weight:  20 kg (44 lbs)

Kyocera R-851


"Very simply, our R-851 is not for everyone. Not for every dealer. Not for every audio buyer. Only for those who demand the best. Those who want sound that's pure and distinctive ... who hear subtleties other miss. For those discriminating listeners, the R-851 is well worth the quest."

Hear the silence before you hear the sound
Switch on the R-851, switch from one function to another. Try Phono,Tape 1,Tape2, Auxiliary. Back to Phono. Absolute silence (of course, you'll get sound on AM/FM). The silence is the mark of a great receiver. And great engineering. The kind of quiet an audiophile loves to hear.



Sound that takes you closer to the source.
We.ve turned on the R-851 for some very experienced - even jaded -  audio cars, and all we can say is it stops'em every time. The sound is different. The sense of being there is almost overpowering. All this comes from 85 watts per channel of power (with dynamic power far above this figure) and some of the most sophisticated circuitry in the business. Above all, it uses MOS FETs, the new breed of output transistors, in the amplifier section. They can handle the transients, the power surges, the power requirements of present-day sound  (and tomorrow's digital sound) better than bipolar transistors ever could and give you a sonic purity like no other (many claim MOS FETs have picked up the warm, rich sound of the great tube amps and gone a step beyond!)

Fine tuned for every audio need
From front end to output jacks, the R-851 offers every feature an audio enthusiast might want. The most commonly used controls are right up front - the more esoteric ones are placed behind a neat flip-down front panel. There's microprocessor controlled quartz-locked tuning with 14 station programmable memory (7 Am and 7 FM): automation station seek; fluorescent display panel; and two-way tape monitoring and dubbing.




Specifications
Audio Section
Power output (RMS, both channels driven with minimum THD at 8Ω per channel):  85 watts
Total Harmonic Distortion  (at rated output):  0,015%
Frequency Response:  20 - 20,000 Hz  ±0,3 dB
Intermodulation Distortion (at rated output):  0,015%
Slew Rate:  60 V/micro-sec
Rise Time:  1,0 micro-sec
Input Sensitivity (at rated output):
Phono MC : 125 mV/100 Ω
Phono MM : 2,5 mV/47 kΩ
Others : 150 mV/30 kΩ
Maximum input voltage (at 1 kHz, 0,5% THD):
Phono MC : 10 mV
PHono MM : 200 mV
Hum and Noise Ratio (IHF, short circuited, A-weighted, for rated output):
Phono MC : 68 db
Phono MM : 86 dB
Other : 100 dB
Damping Factor (8Ω at 1 kHz):  50
Parametric Equalizer:
Bass (at 800 Hz turn-over):  ±10dB at 100 Hz
Mid-range (at 800 Hz turn-over):  ±10 db at 800 Hz
Treble (at 2 kHz turn-over):  ±10 dB at 10 kHz
Turn-over control
Bass Control:  100 Hz - 500 Hz
Treble Control:  2- 10 kHz variable
Center Frequency - Mid-range:  500 - 2,000 Hz variable
Loudness Compensation (volume control at -30 dB)
100 Hz : +7 dB
10 kHz : +3,5 dB
High Filter (6 dB/oct):  -6 dB (10 kHz)
Subsonic Filter( 12 dB/oct): -3 dB (20 Hz)
Tape Recording output (level at rated input sensitivity):  130 mV
FM Section
Tuning Range:  87,5 - 108 MHz
Usable Sensitivity mono:  9,8 dBf
50 dB Quieting Sensitivity
Mono : 14,8 dBf
Stereo : 35 dBf
Capture Ratio (normal IF bandwidth):  1,0 dB
Distortion (normal IF bandwidth):
Mono 1 kHz : 0,6%
Stereo 1 kHz : 0,06%
Separation at 1 kHz:  58 dB
High-lbend at 1 kHz separation:  20 dB
Frequency Response:  30 hz - 15 kHz, +0/-0,5 dB
Signal-to-noise Ratio:
Mono : 88 dB
Stereo : 76 dB
Stereo Threshold:  20 dBf or 40 dBf
Muting Threshold
High : 40 dBf
Low : 20 dBf
Selectivity, alternative channel (narrow IF bandwidth):  85 dB
Spurious Rejection:  95 dB
IF Rejection:  120 dB
Image Rejection:  85 dB
Subcarrier Product Ratio:  65 dB
Recording Output Voltage:  0,75 V
Antenna provision Unbalanced:  75 Ω
Indicators:
Signal : 5-dot LED (green)
Stereo : LED (red)
Station : LED (green)
Station Preset : 7 LEDs (red)
AM Section
Tuning Range:  520 - 1,710 kHz
Sensitivity, (loopstic antenna, S/N =20 dB):  300 microvolt/m
Image Rejection:  50 dB
Signal-to-noise Ratio:  50 dB
IF Rejection:  85 dB
Selectivity:  ±20 kHz  45 dB
Distortion:  0,3%
Frequency Response (at -6 dB):  20 Hz to 2,3 kHz
Recording Output Voltage:  0,3 V
Antenna provision
a - built-in ferrite loopstick antenna;
b - external antenna terminal
Signal Strength Indication:
5-dot LED (green)
Digital Control Section
Frequency Space
AM 10 kHz
FM 100 kHz
End-to end Sweep time:
AM 12 sec.
FM 20 sec.
General
Power Requirement:  AC 110 - 120 220 - 240 V 50/60 Hz
Dimensions (W x H x D):  460 x 132 x 360 mm (18-1/8 x 5-3/16 x 14-3/16 inch)
Weight:  12,3 kg ( 27 lbs)

Kyocera C-910 (1983)

The first control pre-amplifier based on digital age technology and space age materials.

Features

Single Stage Push-pull circuitry improves open-loop performance and requires minimal use of negative feedback.

Separate input level and output volume controls near the final stage achieve the best signal-to-noise ratio and dynamic range.

Ceramic Compound Resin base chasiss isolates unwanted vibration both from internal and external sources.

Built-in MC Head amplifier is encased in a completely separate block, shielded with non magnetic material.

Only select circuit components used, from ceramic capacitors to film capacitors to achieve atmost sound quality.

Newly developed Fine Ceramic Linear module preserves sound quality by preventing unwanted vibration and DCdrift.

Top-quality Linear Crystal Oxygen-Free Copper wires are used to minimize signal loss through cable wires.

Digital program sources are virtually free of noise, with dynamic ranges in excess of 90 dB. For a pre-amplifier to cope with this unprecedented audio quality required the full refinement of conventional audio techniques as well as a totally fresh approach to improving performance.

The C-910's circuit design begins with a highly simplifield all Direct-Coupled (DC) Single Stage Push-pull (SPP) amplifier configuration that eliminates the second voltage amplifier stage of the output section. The SSP circuit maximizes the advantages innerent in a MOS-FET circuit, but also provides a very high slew rate exceptionally smooth open loop response wide dynamic range and maximum signal-to-noise ratio. No capacitors are used for stage coupling which eliminates a principle cause of sonic coloration. The entire SSP circuit is then encapsulated in Kyocera's proprietary Fine Ceramic Linear (FCL) module to counter Microphonic Effect and to eliminate instability due to temperature variations. Unwanted vibrations are reduced further by mounting all the C-910's circuitry directly to a high-density, non-resonant Ceramic Compound Resin (CCR) chassis. The Kyocera C-910 lets nothing interfere with accurate sound reproduction.

Specifications

Input sensitivity/impedence:

Phono (MM) : 2,2 mV/47 kΩ

Phono (MC High) : 0,1 mV/60 Ω

Phono (MC Low) : 0,1 mV/30 Ω

High Level : 125 mV/25 kΩ

Phono max. input voltage: 300 mV (MM); 15 mV (MC)

Output level/impedance:

Rec out : 125 mV/560 Ω

Pre out : 2V/300 Ω, 25 V max.

Total harmonic Distortion: 0,003% (10 V)

Frequency response: 20 Hz to 20 kHz (±0,1 dB). DC= 200 kHz (+0/-3 dB)

Signal-to-noise ratio:

Phono (MM) : 85 dB

Phono (MC) : 76 dB

High level : 106 dB (IHF - A)

Dimensions (W x H x D): 430 x 140 x 330 mm (17" x 5½" x 13")

Weight: 10 kg (22 lbs, 12 oz)

Kyocera B-910 (1983)

Kyocera's DC high-speed power amplifier features dynamic power supply

for maximum power and sound quality.

Like its matching pre-amplifier, the C-910, Kyocera's B-910 Power Amplifier begins by taking conventional amplifier design a few significant steps forward. It uses a CCR base chasiss and an FCL module for the input stage both for the purpose of eliminating resonance. It is designed to deliver a continuous power output of 150 W per channel into an 8 ohm load or 200 W per channel into a 4 ohm load - more than enough to handle the sudden power surges that are often required for digital program sources. The high power and high current delivery ability of the B-910 is made possible by a huge power transformer to perform to its full potential an oversized honeycomb heat sink of very high rigidity has been included to effectively dissipate all heat.

In the B-910 traditional two-stage voltage amplification has been replaced by an Single Stage Push-pull (SSP) circuit that eliminates the second voltage amplifying stage. This and an output stage without a negative feedback loop combine to create the widest possible dynamic range in a power amplifier. The B-910 then uses Kyocera's proprietary Fine Ceramic Linear (FCL) module and Ceramic Compound Resin (CCR) base to prevent unwanted temperature variations from adversely effecting the amplifier's most critical circuitry.

Features

Utilization of a newly developed FCL module avoids sound quality deterioration due to unwanted vibration and DC drift.

High 150 W per channel at 8 ohm, 200 W per channel at 4 ohm.

Single Stage Push-pull circuit improves open-loop performance and requires minimum use of negative feedback.

Powerful over-sized power supply transformer with 600 VA core volume.

DC high-speed amplification

Power transistors with 900 W

High input impedance MOS_FET driver stage

Non-negative feedback output stage

CCR base chasiss shutt out unwanted vibration both in terms of material and structural design

Oversized resonance free heat sink efficiently dissipates heat

Specifications

Rated output power (both ch. driven 20 Hz-20 kHz): 150 +150 W (8 Ω), 200 + 200 W (4Ω)

Input sensitivity/impedance: 2.0 V/30 kΩ

Total Harmonic Distortion: 0.02% (at 8Ω); 0,03% (at 4Ω)

Frequency response: DC - 200 kHz (at 1 watt -3 dB)

Signal-to-noise ratio: 120 dB

Dimensions (W x H x D): 430 x 210 x 400 mm (17" x 8¼" x 15¾")

Weight: 27 kg (59 lbs, 8 oz)

KYOCERA DA-710 CX


In may of 1983, Kyocera introduced a CD player with true 16-bit digital filters. Today, the competition's calling this circuit "the latest thing". Years ago we had four-times oversampling. This year every high-end player worth mentioning has a similar design. In september, 1984 Kyocera raised some eyebrows with the world's first Fine Ceramics anti-resonant CD chassis. Now the stores are full of flimsy imitations.
How did all these innovations happen to come from Kyocera, and not some household name? perhaps because kyocera's knowledge of digital circuitry comes fromyears of building computers for some of the best-known names in electronics. perhaps because Kyocera is a world leader in Fine Ceramics, the technology used to house circuitry in aerospace and other advanced applications. Or perhaps beacouse some top-rated CD players form other brands were actually made by Kyocera.

Now Kyocera has four world-beating Compact Disc Players, ranging in suggested retail price from $ 350 to the $800 model DA-710CX shown here. Each boasts technology so advanced, it's a preview of what the competition will be selling in 1989. After all, history does repeat itself.