Panasonic SA-5800 receiver

Panasonic SA-5800

From a highly sensitive FM/AM stereo receiver housing powerful direct-coupled ITL-OTL-OCL amplifier and 2-FETs, 1-ics stereo tuner.

Designed to faithfully entertain your ears, you, the discriminating audiophile. This new FM/AM Stereo Receiver highlights all of the exclusive national Panasonic Features: Direct-Coupled ITL-OTL-OCL amplification circuitry and newly developed Differential amplifier circuits reward you with exciting distortion-free audio power. Two highly sensitive 4-pole (MOS) Field Effect Transistors, a Linearly Variable 4-gang FM capacitor, and a costly Monolithic IC in the specially built MPX circuit will gratify your growing need fro selectivity in today's crowded FM world.

Wider frequency response, higher damping factor with lower distortion and noise level, and superb, clear output signal all add up to incomparable stereo enjoyment. The skilfully designed station targeting system, bolstered by highly sensitive tuning circuitry, makes the SA-5800 the most advanced stereo receiver available today. The well-bred child of a close-knit family of electronics wizards, this sensitive instrument effortlessly meets your highest standards.

Powerful 100W Music Power

Lend an Ear & Listen with Care. No sound has ever been so pure and so powerful as that of the SA-5800. These 100 watts of output power are more than sufficient to engulf your whole house in a sea of crystal-pure sound. Whether you want to lose yourself in the driving rhythms of Jazz or the New Rock, or slide into that warm, classical world, let the SA-5800 be your magic Carpet. Its vibrant power will set a crowd swinging to the throbbing beat, or gently soothe the meditative individual.

Reliable, Stable Amplification

Apart from the unique Direct-coupled circuitry, this receiver also features newly developed differential amplifier circuits. No matter how weak the input signal, the amplifier section will magnify it faithfully, in no way impairing its tonal colors. Furthermore, it assures you of rock-stable performance with clean, linear response to all audible frequencies.

Exclusive ITL-OTL-OCL Circuitry

The Tremendous power of the SA-5800 is channelled through a totally new concept in circuit construction. By eliminating the need for the input and output transformers, and the output capacitor, the very source of noise and signal distortion has been eradicated. this new direct-coupled circuitry greatly widens the range of frequency response and  boosts the damping factor to new higher levels. it also reduces the signal distortion to the range of imperceptibility.

Clean Full-Bodied Sound

Even the transistors at the heart of this unique circuitry are totally new. Specially selected high performance transistors have been liberally employed throughout, enabling your to fully perceive the richness and grandeur of any musical sound.

The full complement of tone controls gives you the greatest possible range of Bass and Treble selection allowing you to tailor the sound to your most demanding needs and tastes. The volume control will help you to fill your ears with full concert hall stereo reality

Totally Noise-Free Pre-Amplifier

The SA-5800 offers your ears crisp-clear sound rich, in all the perceptible tonal colors. ALL the thanks go to the extremely low-noise transitory (2SA666) and the honestly built 2-stages PNP-NPN directly coupled equalizer incorporated in the pre-amplifier.

Whatever the strength of the signal you feed into theSA-5800, it will respond faithfully, keeping the amplified signal free from any distortion or noise.

Regulated Power Supply

Have no worries. Be assured that the power output of the SA-5800 as in all National Panasonic's top quality audio in its, is perfectly regulated for reliable sure performance. For producing electrifying Symphonic climaxes, heavy Rock, cool Gypsy violins or soft Mood Music, The power supplied to the different component circuits is maintained at the same stable level allowing precisely balanced stereo reproduction and tonal richness.

Two Highly Selective MOS FETs

The SA-5800 features an entirely new FM frontend design. Completely shielded in a subchassis from distortion producing interference and trouble power hum , it houses two highly selective Field Effect Transistors (4-pole MOS type) in both the first and the second RF stages which are perfectly co-ordinated with a linearly variable 4-gang Tuning Capacitor and 4 tuned circuits. This flawlessly engineered design, assures you of unrivalled sensitivity and peak selectivity for collecting any FM station, near or far.

Stage IF Amplification Circuit

Complementing the highly effective FM frontend, is a specially designed 6-stage IF Amplification Circuit employing 5 Differential Amplifiers and a unique 6-element Ceramic Filter. The highly refined selectivity characteristics offered by this advanced 6-stage IF Circuit are unparalleled by any receiver or tuner of this price range. Alternate Channel Selectivity is as much as 80 dB and capture ratio is far better than 1,5 dB

Noise-Eliminating Muting Switch

The SA-5800 is an absolute joy to operate. You'll find that its performance is as clear and smooth as the cool, distinctive lines of its solid teak cabinet. Its pure tones should never be marred by interstation static shocks, hisses or hums. However, if it happens that such noise does interfere with your listening pleasure, just switch on the Muting Circuit. This feature rids the signal of unwanted noise for uninterrupted musical enjoyment.

Other Features:

Two Tape Monitors,

Efficient Loudness Control,

High Cut-off Filter,

Unique Station Targeting System,

Monolithic IC in the MPX circuit,

Versatile FM Antenna Circuit and Sensitive Ferrite-bar antenna,

Superb Selectivity, and Unmatched Sensitivity of AM sound,

Signal Strength Meter for AM,

Center Tuning meter for FM,

Reverse Automatic Gain Control,

Functional Slide Rule Tuning Panel.

Specifications

Audio Section

Music Power

2 x 50 W at 4 Ω 

2 x 37,5 W at 8 Ω 

RMS Power Each Channel

37 / 37 W At 4 Ω 

27 / 27 W at 8 Ω 

RMS Power Both Channels

27 / 27 W at 4 Ω 

23 / 23 W at 8 Ω 

Total Harmonic Distortion:  0,5% at 40 - 16,000 Hz (rated power, 4 Ω ); 0,5% at 1,000 Hz (Rated power, 4 Ω )

Intermodulation Distortion: 0,7% at 250/8000 Hz =4:1 (Rated power, 4 Ω )

Power Bandwidth:  5 - 40,000 Hz (-3 dB)

Frequency Response:  15 - 85,000 Hz (-3 dB)

Damping Factor:  70 (8 Ω )

Load Impedance:  4 - 16 Ω 

Signal-to-Noise-Ratio  (at rated power)

Phono :  62 dB

Aux :  77 dB

Input Sensitivity

Phono (mag) :  2 mV/ 50 k Ω 

Aux :  180 mV/ 100 k Ω 

Tape Monitor (DIN)

Input :  300 mV/55 k Ω 

Output :  60 mV/70 k Ω 

Tape Monitor (Pin terminal)

Playback :  180 mV/40 k Ω 

Rec Out :  180 mV/750 Ω 

Tone Controls

Bass :  +13 -14 dB at 50 Hz

Treble :  +10 -10 dB at 10,000 Hz

FM Tuner Section

Antenna Terminals:  300 Ω  (balanced); 75 Ω  (unbalanced)

Frequency Range:  88 - 108 MHz

Sensitivity

Antenna 300 Ω   (at ± 40 kHz deviation)

1,8 µV  (s/n 30 dB)

1,6 µV  (s/n 26 dB)

Antenna 75 Ω   (at ± 40 kHz deviation)

1,2 µV  (s/n 30 dB)

1,0 µV  (s/n 26 dB)

Harmonic DIstortion (at ± 40 kHz deviation)

Mono : 0,2%

Stereo :  0,6%

Signal-to-Noise-Ratio  (at ± 40 kHz deviation)

Mono :  64 dB

Stereo :  63 dB

Selectivity:  80 dB  (at 400 kHz)

IF rejection:  100 dB

Image Rejection:  90 dB

AM Suppression:  45 dB

Capture Ratio:  1,5 dB

Leak Carrier:  38 dB (at 19 kHz); 50 dB  (at 38 kHz)

Stereo Separation:  40 dB at 1,000 Hz

Limiting Point (-3 dB):  1,2 µV 

Deemphasis:  50 µsec

Auto Stereo Operation Level:  6 µV 

Bandwidth

IF Amplifier :  400 kHz

FM-Demodulator :  400 kHz

AM Tuner Section

Frequency Range:  525 - 1605 kHz 

Intermediate Frequency (IF):  455 kHz 

Sensitivity:  15 µV 

Selectivity:  30 dB

Image Rejection:  65 dB

IF Rejection:  70 dB

General

Power Supply:  AC 110/120/220/240 V 50/60 Hz

Power Consumption:  230 W

Dimensions (W x H x D):  406 x 140 x 356 mm (16" x 5-1/2" x 14")

 

Pioneer SX-D7000 receiver

 Pioneer SX-D7000

Stereo receiver with non-switching DC Power Amp Quartz-PLL tuner and electronic touch tuning

Power Amp Highlights

Protection circuitry has gold-plated dual-contact relays for fast response and unfailing dependability should power-related misshape occur. the receiver and your speakers are fully protected the circuitry mutes power on/off noise, protects power transistors and speaker from abnormal direct-current potentials and overload at the output.

Preamp/Control Highlights

Function Indicators (FM/AM/AUX/PHONO) - Pioneer's "Light Touch" buttons are employed to indicate the selected function. The buttons are lit and glow green when engaged.

Speakers (A, B, C) switches with LED indicators

Low Subsonic Filter is 18 Hz with -6dB/oct. curve.

Tape Monitor and Duplicate switches for decks 1 and 2, deck-to-deck dubbing is easily accomplished between the two in either direction.

Loudness, Balance, Mode (Stereo/Mono) and Muting (-20 dB) controls

Adaptor switch to patch in a signal processor unit such as a  graphic equalizer, dynamic processor or reverberation unit.

Attenuator-Type Master Volume Control

We've improved the "feel" of the master volume control by giving it decibel calibrations from 0 down to -70 dB.

For operating convenience, the control has 41 detents or click stops. The mechanism which actually controls the volume - the potentiometer - is elaborate with four-ganged design. there is one two-ganged potentiometer ahead of the tone controls amp. another behind. the thoroughness of this design is apparent in improved s/n ratio during low-level sound reproduction.

Low-Distortion Tone Control Amp

This is an IC-built circuit block, employing NFB (Negative Feedback) to lower distortion to 0,005% or less (4V output) over the 20 -20,000 Hz range. Bass and treble adjustments are made by the two slider controls - each with 11 click stops - in conjunction with two switches for Turnover.

The Turnover for Bass offers a choice of 400 Hz or 200 Hz as the frequency at which response is down by -3 dB; turnover for Treble gives a choice of 2,5 kHz or 5 kHz. only a tone control this elaborate and far-reaching provides total system control. You may, if you wish, bypass the tone circuit.

Specifications

Power Amp Section

Continuous Power Output:  120 watts per channel, min. At 8 ohms from 20 to 20,000 Hz with no more than 0,005% THD

Total Harmonic Distortion:

No more than 0,005% (continuous rated power output)

No more than 0,004% (60 watts per channel power output)

Intermodulation Distortion (50 Hz : 7,000 kHz = 4:1):

No more than 0,005% (continuous rated power output)

No more than 0,004% (60 watts per channel power output)

Frequency Response:  3 to 450,000 Hz +0 dB, -3 dB

Input Sensitivity/Impedance:  1V/50 kΩ (Power Amp In)

Output:

Speaker : A, B, C; A+B, B+C, A+C; OFF

Headphones : Low impedance

Damping Factor:  60 (20 to 20,000 Hz, 8Ω)

Hum and Noise (short circuited, A network):  115 dB

Pre-amp Section

Input Sensitivity/Impedance

Phono 1, 2 (MM) : 2,5 mV/50 kΩ

Phono 1, 2 (MC) :  0,25 mV/100 ohm

Aux, Tape 1 & 2, Adaptor In:  150 mV/50 kΩ

Phono 1, 2 Overload Level:  200 mV(1 kHz, THD 0,005%)

Output Level/Impedance:

Tape Rec 1 & 2, Adaptor Out:  150 mV

Pre Output: 1V/1kΩ

Total Harmonic Distortion:  No more than 0,005% (20 to 20,000Hz, 4V output)

Frequency Response

Phono (RIAA Equalization):  20 to 20,000 Hz,  ±0,2 dB

Aux, Tape 1 &2, Adaptor:  5 to 100,000 Hz,  +1,0 dB, -3,0 dB

Tone Control

Bass at 200 Hz : ±8 dB (100 Hz)

Bass at 400 Hz : ±10 dB (100 Hz)

Turnover Frequency :  200 Hz / 400 Hz

Treble at 2,5 kHz : ±10 dB (10 kHz)

Treble at 5,0 kHz : ±8 dB (10 kHz)

Turnover Frequency :  2,5 kHz / 5,0 kHz

Filter

Low (Subsonic) : 18 Hz (6 dB/oct)

Loudness Contour (volume control set  at -40dB) : +6 dB (100 Hz), +3 dB (10 kHz)

Hum and Noises (Short-circuited A network)

Phono MM : 86 dB

Phono MC : 72 db

Tuner, Aux, Tape 1 & 2, Adaptor:  100 dB

Muting : -20 dB

FM Tuner Section

Usable Sensitivity:  10,2 dBf (1,8 µV); (Mono)

50 dB Quieting Sensitivity:

Mono : 15,7 dBf (3,2 µV)

Stereo : 34,2 dBf (28,2 µV)

Signal-to-Noise Ratio (at 85 dBf):

Mono : 82 dB

Stereo : 78 dB

Distortion (at 65 dB)

100 Hz : 0,1% (mono); 0,2% (stereo)

1 kHz : 0,07% (mono); 0,1% (stereo)

6 kHz : 0,1% (mono); 0,2% (stereo)

Frequency Response: 30 to 15,000 Hz ±0,5 dB

Capture Ratio:  1,0 dB

Alternate Channel Selectivity: 80 dB (400 kHz)

Spurious Response Ratio:  80 dB

Image Response Ratio:  80 dB

IF Response Ratio:  90 dB

AM Suppression Ratio:  60 dB

Muting Threshold:  35,7 dBf (32 µV)

Stereo Separation:  50 dB (1 kHz), 35 dB (30 Hz to 15 kHz)

Subcarrier Ratio:  65 dB

SCA Rejection Ratio:  65 dB

Antenna Input:  300 Ω balanced; 75 Ω unbalanced

AM Tuner Section

Sensitivity:  300 µV/m (IHF, ferrite antenna);  15 µV (IHF, external antenna)

Selectivity: 30 dB

Signal-to-Noise ratio:  45 dB

Image Response Ratio:  30 dB

IF Response Ratio:  60 dB

Antenna:  Ferrite loopstick antenna

Semiconductors:  15 FETs; 22 ICs; 105 transistors; 105 Diodes

General

Power Requirement:  120 V, 60 Hz ;  220 V, 50/60 Hz

Power Consumption:  250 W

Dimensions (W x H x D):  519 x 180 x 460 mm (20-7/16" x 7-1/16" x 18-1/8")

Weight:  19,2 kg (42 lbs5 oz) without package

Sony STR-VX250 receiver

 Sony Direct Access Receiver

Key Selling Feature: Direct Access

Within the past years, the accuracy of quartz frequency synthesis tuning has become increasingly available in popular priced receivers. It’s available in this Sony. However, this receivers offers another feature which is not available on other receivers – the convenience of Direct Access tuning. With this system, your customers can directly “key-in” their station frequencies then memorize them by entering the station into the presets.

Key Demonstration

Ask your customer for the frequency of his favourite station. If it’s FM, have him press the FM button first, then, have him enter the numbers on the receiver keypad. If, for instance, the station is 102,70 FM, he should press FM, then one-zero-two-seven-zero. A final zero needs to be added to complete the access. Then perform an additional demo, show the customer how the receiver can find stations without complete information. Press one-zero-two- and then press the “+” button. The receiver will scan up and find the station. To complete the demo, enter this station as a memory preset. After the station is tuned, press memory, then key marked1. This will preset the station.

Convenience Features

Direct Access – design for easy convenience tuning

8 station random access – presets for fast recall favourite stations

Station card – insert to mark preset stations

Auto Tuning – between FM stations

Fluorescent display – indicates station frequency and function

Tape Monitor

Memory backup system – retains memory settings – even it the recover is unplugged

Speaker Switch: A, B, A&B, Off

Technology Features

Quartz Frequency Synthesis – provides the most accurate, most convenient tuning available

Specifications

Amplifier Section

Continuous Power Output (RMS)

25 watts per channel, both channels driven into 8 Ω  from 40 Hz to 20 kHz, at no more than 0,8% Total Harmonic Distortion.

20 watts per channel, both channels driven into 4 Ω  from 20 Hz to 20 kHz, at no more than 0,08% Total Harmonic Distortion.

Total Harmonic Distortion

0,08% from 20 Hz to 20 kHz , 20 watts , 8 Ω

Intermodulation Distortion

0,08% (60 Hz : 7 kHz = 4:1) , 20 watts , 8 Ω

Damping Factor:  30

Frequency Response

Phono : RIAA standard curve +0,5 dB -0,5 dB

Tape, Aux :  10 Hz - 50,000 Hz -3 dB

Input Sensitivity/Impedance

Phono:  2,5 mV/ 50 k Ω

Tape, Aux :  150 mV/50 k Ω

Signal-to-Noise Ratio

Phono :  72 dB (IHF-A); 76 dB (new IHF) at 2,5 mV

Tape, Aux :  94 dB (IHF-A); 74 dB (new IHF) at 150 mV

Speaker Impedance

8 - 16 Ω  A or B

8 - 16 Ω  A and B

Tuner Section

Usable Sensitivity

Mono :  11,2 dBf (2,0 µV)

50 dB Quieting Sensitivity:

Mono :  17,3 dBf (4,0 µV)

Stereo :  38,3 dBf (45 µV)

Signal-to-Noise Ratio

Mono :  75 dB

Stereo :  70 dB

Total Harmonic Distortion at 1 kHz

Mono :  0,2%

Stereo :  0,3%

Alternate Channel Selectivity, 400 kHz :  60 dB

Frequency Response:  30 Hz - 15,000 Hz +0,5 dB -2 dB

Stereo Separation:  45 dB at 1 kHz

AM Suppression:  54 dB

AM Sensitivity:  300 µV/m (built-in antenna)

AM Signal-to-Noise Ratio:  54 dB at 50 µV/m

AM Selectivity:  40 dB

General

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

Power Consumption:  65 watts (UL)

Power Outlets:  100 Watts switched; 100 Watts unswitched

Dimensions (W x H x D):  430 x 105 x 305 mm (17" x 4-1/4" x 12-1/8")

Weight:  5,6 kg (12 lbs 5 oz)

Supplied Accessories:  FM ribbon antenna; Memory system batteries “AA” x 2

Kenwood KR-3200 receiver

 Kenwood KR-3200

FM/AM Stereo Receiver

Stereo Sophistication for Music Lovers on a Budget

For a stereo receiver with audiophile sophistication at a moderate price, look no farther than the Kenwood KR-3200. This remarkable unit delivers ample power to drive two sets of stereo speakers. It provides a control center for a complete stereo system, including Phono, Auxiliary and Tape Deck. It also incorporates many of the same fine features found on Kenwood’s far more expensive units, to give you operating convenience and flexibility. Like all fine Kenwood products, the KR-3200 reflects Kenwood's meticulous engineering and stringent quality control in its high performance level and extraordinary dependability. In every respect, the Kr-3200 proves itself a remarkable stereo value.

Newly-Developed DSD Circuitry – Kenwood’s exclusive Double-Switching Demodulator in the MPX circuit appreciably improves stereo separation. A new block filter design efficiently reduces beat interference and intermodulation distortion due to carrier leakage, greatly improving FM de-emphasis characteristics.

Super Low-Noise Preamplifier – Kenwood incorporates new PNP silicon low-noise transistors in the preamp stage to assure low-noise performance and circuit reliability.

Power Amplifier Section – The KR-3200 boasts a wide frequency response with exceptional flatness to deliver stereo reproduction on the highest fidelity. Damping factor is excellent, especially at the lower frequencies.

Linear Frequency Dial Scale – Because the KR-3200 employs a linear frequency variable capacitor, the FM dial scale is equally graduated from 88 to 108 MHz, allowing quick, accurate tuning from one end of the dial to the other.

Large, Luminous Tuning Meter – An extra-large, bright Signal Strength Meter provides an easy read-out of optimum reception point for easy tuning accuracy.

One-Touch Speaker Terminals – Connecting the two sets of stereo speakers is as easy as pushing a button with these newly-designed, short-circuit-proof speaker connectors.

Step-Type Tone Controls – Precise and resettable tonal balance can be achieved by means of Bass and Treble Tone Controls calibrated in 2 dB increments from +10 dB to -10 dB

Other Features – Loudness Control; Noise Filter; Tape Monitor; Front Panel Headphone Jack; 300 and 75 ohm antenna impedance

Specifications

FM Tuner Section

Sensitivity (IHF):  2,3 µV 

Quieting Slope:  48 dB  at 5 µV ; 60 dB  at 10 µV ; 63 dB  at 50 µV 

Signal-to-Noise-Ratio:  63 dB 

Capture  Ratio (IHF):  3,5 dB 

Selectivity  Ail. Ch (IHF):  50 dB 

Frequency Response:  20 – 15,000 Hz (+0,5 -2,0 dB)

Stereo Separation:  53 dB at 1 kHz; 20 dB at 10 kHz

Total harmonic Distortion: (at 400 Hz, 100% Mod.)

Mono :  0,5%

Stereo :  0,9%

Image Rejection:  60 dB 

IF Rejection:  90 dB 

Harmonic Spurious Rejection:  80 dB 

AM Suppression:  60 dB 

Sub-Carrier-Suppression:  45 dB 

Antenna Impedance:  300 Ω  and 75 Ω 

AM Tuner Section

Sensitivity (IHF):  24 µV 

Signal-to-Noise-Ratio:  45 dB at 1 mV input

selectivity (IHF):  30 dB 

image Rejection Ratio:  45 dB 

IF Rejection:  35 dB  

Antenna:  Built-in ferrite bar antenna, External antenna terminals

Amplifier Section

Continuous Power Output (RMS)

Both Channels Driven Simultaneously

27 watts (13,5 + 13,5) at 8 Ω  from 50 Hz – 20 kHz

34 watts (17 +17) at 8 Ω  1 kHz 

40 watts (20 + 20) at 4 Ω  1 kHz 

Each Channel Driven

24/24 watts at 4 Ω at 1 kHz 

18,5/18,5 watts at 8 Ω  at 1 kHz 

Dynamic Power Output (IHF)

Both Channels Driven

60 watts at 4 Ω 

42 watts at 8 Ω 

Total harmonic Distortion: 

Less than 1,3% at rated output

Less than 0,2% at -3 db

Intermodulation Distortion:

Less than 1,3% at rated output

Less than 0,2% at -3 dB 

Frequency Response: 

High Level Input:  25 – 35,000 Hz (±2 dB)

Power Bandwidth (IHF):  25 – 25,000 Hz

Input Sensitivity/Impedance

Phono :  3 mV/50 k Ω 

Aux :  180 mV/30 k Ω 

Tape Play :  200 mV/45 k Ω 

Hum and Noise

Phono :  63 dB 

Aux :  75 dB 

Tape Play :  75 dB 

Output Voltage

Tape Rec :  180 mV

DIN Connector :  30 mV

Tone Controls

Bass :  ±10 dB  at 100 Hz 

Treble :  ±10 dB  at 10 kHz 

Loudness Control:

± 10 dB  at 100 Hz 

+0 dB  at 10 kHz 

Noise Filter: -10 dB  at 10 kHz 

Damping Factor (8 Ω ):  50

Speaker Impedance:  4 to 16 Ω 

General

Switches

Speakers:  Off, A, B, A + B

Selector:  AM, FM, Phono, Aux,

Mode:  Mono-Stereo

Others:  Tape Monitor, Noise Filter, Loudness

AC Outlets:  1 switched, 1 unstitched

Power Voltage:  110 – 120 V AC, 50/60 Hz 

Power Consumption:  85 watts at full power; 20 watts at no signal

Dimensions (W x H x D):  17-1/8” x 5-3/4” x 13-5/8”

Weight:  18 lbs

Cybernet SRC-80 receiver

SRC-80 Integrated Stereo Receiver - The Slimline Series SL-80

Amplifier Section Features:

Direct coupled OCL circuitry

Wide, dynamic range phono equalizer amplifier

Loudness compensation

High and low filters

Moving magnet and moving coil cartridge capability

Detented tone controls

41 detent volume control

Two tape monitors with 2-way dubbing

Instant audio mute switch

 

Tuner Section Features

Quartz controlled frequency synthesized tuning

Fluorescent digital display

14 programmable preset station selection and indicators

Automatic scanning

Sensitive dual gate MOS FET in FM front end

Highly selective IF section with 3 dual element ceramic filters

PLL multiplex decoder

LED signal strength and auto stereo indication

Last channel memory circuit

 

Specifications

Amplifier Section

Power Output:  50 W + 50 W (20 - 20,000 Hz) at 8 Ω

Total Harmonic Distortion (rated power at 20-20,000 Hz):  0,08% at 8 Ω

SMPTE Intermodulation Distortion:  0,08%

Frequency Response:  20 - 20,000 Hz ±0,5 dB

Power Bandwidth:  7 - 35,000 Hz _3 dB

Input Sensitivity/Impedance

Phono MM :  2,5 mV/47 k Ω

Phono MC :  100 µV/47 K Ω

Others :  150 mV/47 k Ω

Huma and Noise Ratio

Phono MM :  73 dB

Phono MC :  62 dB

Others :  93 dB

Maximum Input Voltage

Phono MM :  150 mV

Phono MC :  6 mV

Damping Factor:  40 (8 Ω , 1 kHz)

Tone Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Compensation +7 dB (at 100 Hz) +3,5 dB (at 10 kHz)

Filters

High :  10 kHz (6 dB/oct)

Low :  40 Hz (6 dB/oct)

Audio Mute:  -20 dB

Tape Recording Output :  130 mV (at rated input sensitivity)

FM Section

Tuning Range:  87,5 to 108 MHz

Usable Sensitivity: 

Mono :  10,9 dBf

Stereo :  20 dBf

50 dB Quieting Sensitivity

Mono :  18 dBf, 4,4 µV (IHF)

Stereo :  40 dBf, 54,7 µV (IHF)

Total Harmonic Distortion

Mono :  0,15%

Stereo :  0,3%

Alternate Channel Selectivity:  60 dB (±400 kHz)

Capture Ratio:  2 dB

Selectivity )±400 Hz):  60 dB

Stereo Separation(at 1 kHz):  45 dB

Audio Frequency Response:  30 Hz - 15 kHz (±0,5 dB)

Signal-to-Noise Ratio: 

Mono :  70 dB (A-weighted)

Stereo :  65 dB (19/38 kHz filtered)

Spurious and IF Rejection:  70 dB

Image Rejection:  45 dB

Subcarrier Ratio:  65 dB

Tuning Frequency Space:  50 kHz

Antenna:  75 /300 Ω

AM Section

Tuning Range:  531 to 1,602 kHz

Sensitivity (loop Antenna):  350 µV/m (S/N=20 dB)

Image Rejection:  45 dB (600 kHz)

Alternate Channel Selectivity:  45 dB (20 kHz)

Distortion: 0,5%

Signal-to-Noise Ratio:  45 dB

Antenna:  Built-in adjustable ferrite bar, and provision for ext. Antenna

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

Dimensions (W x H x D):  430 x 106 x 390 mm (16-15/16" x 4-3/16" x 15-3/8")

Weight:  12,3 kg

 

kenwood KR-2300 receiver

AM/FM Stereo Receiver

The Component That proves Quality Need not Be Expensive

Kenwood has designed the KR-2300 to prove that a quality component need not be beyond the reach of the budget-minded audiophile. With specifications and control features that are truly astounding, the KR-2300 looks and performs like a far more expensive unit, even down to such luxury features as "mike mixing" in any mode. Compare its specifications. Compare its fine features with other, more expensive units. Then, listen to the KR-2300 yourself.

You'll really appreciate how much receiver Kenwood offers for the price.

 

"Mike Mixing" In any mode

A unique features that will certainly add to your stereo enjoyment, Mike Mixing permits you to blend your own voice or instrumental accompaniment with sound from any other program source. Microphone jack and level control are positioned on the front panel for convenience

 

Specifications

FM Tuner Section

Usable Sensitivity (IHF):  2,5 µV

Signal-to-Noise Ratio (IHF):  better than 60 dB

Capture Ratio (IHF):  4.0 dB

Selectivity, Alt Ch. (IHF):  40 dB

Stereo Separation: 30 dB at 1 kHz

Total Harmonic Distortion (400 Hz, 100% Mod.)

Mono :  0,8%

Stereo :  1,0 %

Image Rejection:  50 dB

IF Rejection Ratio:  95 dB

Spurious Signal Rejection:  80 dB

AM Suppression Ratio:  45 dB

Sub-Carrier Suppression:  40 dB

Antenna Impedance:  300 Ω (balanced) 75 Ω  (unbalanced)

Front End:  1 FET, 3 Gang

AM Tuner Section

Usable Sensitivity (IHF):  25 µV

Signal-to-Noise Ratio:  45 dB

Selectivity (IHF):  25 dB

Image Rejection Ratio:  45 dB

IF Rejection Ratio:  35 dB

Antenna:  Built-in ferrite bar antenna and external antenna

Front End:  2 gang

IF Stage:  2 Gang

Amplifier Section

RMS Power Output

Both Channels Driven

2 x 14 watts into 8 Ω  at 1 kHz

2 x 15 watts into 4 Ω  at 1 kHz

Each Channel Driven

2 x 17 watts into 8 Ω  at 1 kHz

2 x 22 watts into 4 Ω  at 1 kHz

Dynamic Power Output

44 watts into 8 Ω

64 watts into 4 Ω 

Total Harmonic Distortion

1% at rated power output, 0,2% at 1/2 rated power into 8 Ω  at 1 khz

Intermodulation Distortion:  1% at rated output

Frequency Response:  25 - 50,000 Hz ±2 dB

Power Bandwidth (IHF):  30 - 50,000 Hz

Damping Factor:  30 at 8 Ω

Input Sensitivity/Impedance (for rated output)

Phono :  3 mV/50 K Ω

Aux, Tape Play:  120 mV/30 k Ω

Mic. :  4,5 mV/20 K Ω 

Signal-to-Noise Ratio

Phono :  65 dB

Aux, Tape Play :  70 dB

Mic :  60 dB

Tone Controls

Bass :  ±8 dB at 100 Hz

Treble :  ±8 dB at 10 kHz

Loudness Control (at -30 dB):  +8 dB at 100 Hz

General

Switches speakers:  Power Off, A, B, A + B, Phones

Mode:  Mono, Stereo

Selector:  AM, FM Auto, Phono, Aux

Others Switches:  Tape Mon, Loudness, Mic Jack with VR

AC Outlets:  1 switched and 1  unswitched

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

Power Consumption:18 watts at no signal,  (110 watts at full power output)

Dimensions (W x H x D):  450 x 133 x 335 mm (17-3/4" x 5-5/8" x 13-7/8")

Weight:  9,4 kg (20,7 lbs)

 

Kenwood KR-2200 receiver

FM/AM Stereo Receiver

Brilliant Stereo performance, Amazing Stereo Value.

Ideal for den, dorm, or as the electronic center of a second stereo system in your home, Kenwood's KR-2200 receiver boasts performance specifications and control features that belie its budget price. Convinced that a lower powered receiver need not sacrifice sound quality within its ratings, Kenwood engineers have come up with a receiver whose technical specifications and features will truly astound you. If 30-watts of dynamic )IHF) power is all you need or can afford, the KR-2200 will give you the most for your stereo investment.

 

Power Amplifier Section

Harmonic and intermodulation Distortion of the power amplifier section of the KR-2200 is less than 0,8% at rated output, and the amplifier can handle any speaker impedance from 4 Ω  to 16 Ω . At normal listening levels, distortion is actually less than 0,2%

Mike Mixing In any mode

A unique features that will certainly add to your stereo enjoyment, Mike Mixing permits you to blend your own voice or instrumental accompaniment with sound from any other program source. Microphone jack and level control are positioned on the front panel for convenience

Sophisticated Controls for your sound system

The KR-2200 provides a broad range of controls to give you complete mastery over your sound system. Beside the individual bass and treble tone controls, a dual concentric Volume/Balance Control enables you to set up precise channel balance in addition to controlling overall loudness. A Speaker Selector Switch activates two pairs of stereo speaker systems, either individually or simultaneously , to let you enjoy stereo in different locations. An input Selector chooses AM, FM Auto, FM Mono, Phone, or Tape/Aux, while a Loudness Compensation Switch permits low-level listening.

FM Tuner Section

A FET (Field Effect Transistor) in the specially-designed front end, a three-section tuning system, and a permanently aligned mechanical IF filter give the KR-2200 an IHF sensitivity of 2,5 µV with a Signal-to-Noise Ratio of better than 60 dB. With an FM stereo separation of 30 dB at 1000 Hz and a spurious signal rejection of 80 dB, you can be sure of clean, interference-free FM reception of all your favorite FM stations.

Other Features

Front Panel Jack for Stereo headphones;

Signal Strength Tuning Meter

Luminous Dial Pointer for easy tuning

Pin and DIN Connector for Tape Deck

1 Switched AC Outlet

 

Specifications

FM Tuner Section

Sensitivity (IHF):  2,5 µV

Signal-to-Noise Ratio:  60 dB

Capture Ratio (IHF):  4.0 dB

Selectivity, Alt Ch. (IHF):  40 dB

Stereo Separation: 30 dB at 1 kHz

Total Harmonic Distortion (400 Hz, 100% Mod.)

Mono :  0,8%

Stereo :  1,0 %

Image Rejection:  50 dB

IF Rejection Ratio:  95 dB

Harmonic Spurious Rejection:  80 dB

AM Suppression Ratio:  45 dB

Sub-Carrier Suppression:  40 dB

Antenna Impedance:  300 Ω

AM Tuner Section

Sensitivity (IHF):  25 µV

Signal-to-Noise Ratio:  45 dB

Selectivity:  25 dB

Image Rejection Ratio:  45 dB

IF Rejection Ratio:  35 dB

Amplifier Section

Continuous Power Output

Both Channels Driven

16 watts :  8 W + 8 W at 8 Ω  from 50 - 20,000 Hz

17 watts :  8,5 W + 8,5 W at 4 Ω  at 1 kHz

Each Channel Driven

11/11 watts at 4 Ω  at 1 kHz

10/10 watts at 8 Ω  at 1 kHz

Dynamic Power Output (IHF)

Both Channel Driven

30 watts at 4 Ω

26 watts at 8 oh

Total Harmonic Distortion

0,8% at rated output

0,2% at -3 dB

Intermodulation Distortion

0,8% at rated output

0,2% at -3 dB

Frequency Response:  25 - 35,000 Hz ±2 dB

Power bandwidth (IHF):  30 - 20,000 Hz

Input Sensitivity/Impedance (for rated output)

Phono :  3 mV/50 K Ω

Aux, Tape Play:  120 mV/30 k Ω

Mic. :  4,5 mV

Hum and Noise

Phono :  60 dB

Aux, Tape Play :  70 dB

Mic. :  60 dB

Tone Controls

Bass :  ±8 dB at 100 Hz

Treble :  ±8 dB at 10 kHz

Loudness Control"  +8 dB at 100 Hz

Damping Factor:  45 at 8 Ω

General

Switches speakers:  Power Off, A, B, A + B, Phones

Tone Controls:  2 dB Step-Type, Bass, Treble

Selector:  AM, FM Auto, FM Mono, Phono, Tape/Aux

Front Panel Jacks: Phones, Microphone

Level Control: Microphone Mixing

AC Outlets:  1 unswitched

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

Power Consumption:  56 watts at full power output

Dimensions (W x H x D):  17-5/8" x 4-3/4" x 15-1/8"

Weight:  13,4 lbs

Walnut Cabinet:  Included

 

Fisher 500-TX receiver

AM/FM Stereo Receiver, with Four methods of Tuning

Engineering leadership of thirty two years in creating the finest receiving equipment has reached its culmination in the Fisher 500-TX. This powerful AM-FM Stereo Receiver is truly the connoisseur's dream, incorporating every state-of-the-art. Feature,

 

Four method of Tuning

Manual - Fisher's ultra-smooth flywheel mechanism assures effortless AM and FM tuning across the large, illuminated, easy-to-read dial scale

Pushbutton - Fisher's Tune-O-Matic Memory Tuning provides instant selection of any one of your four favourite FM stations, simply by pushing a button. This is accomplished by four separate tuning mechanisms and four individual dials with separate control knobs on the front panel. Perfectly matched varactor diodes (variable capacitance or "tuning" diodes) select the exact frequency to which each memory is pre-set, assuring precise tuning each time the station is selected. Drift or deviation from the pre-set position is avoided, since the signal frequency is "locked-in" by AFC.

AUTOSCAN Touch Tuning - is the remarkable FM tuning mode which affords effortless scanning of the FM band in both directions, at the touch of a button. Completely electronic with no motors or moving parts, this unique circuit uses the same varactors previously described to tune either one station at a time, or station after station in continuous sequence. Autoscan tunes in complete silence and will lock onto each station with unerring accuracy, to  degree unmatched by any conventional tuning method.

Remote Control - Station selection using the Autoscan circuit may also be accomplished by means of an accessory unit (Fisher RK-30) which provides convenient tuning from a remote position in the listening area. The RK-30 is a hand-held remote control with 20 feet of flexible cable which permits the user to select stations without leaving his seat.

 

Highest Sensitivity

The sensitivity of the 500-TX, is rated at 1,7 µV, representing the all-important factor in the outstanding ability of the tuner to provide strong and clear reception of even the weakest signals. The FM front end consists of a 4-gang circuit incorporating four newly developed varactor diodes plus dual-gate MOSFETs in the RF and mixer stages. A highly efficient AGC circuit effectively prevents overload and distortion in very strong signal areas, such as cities, even though signals as high as one volt are received.

 

Highest Selectivity

Clean reception of weak, distant stations located adjacent in frequency to very strong local stations is provided by a crystal filter in the FM-IF stage of the tuner. Previously available only in the most expensive communications and military receivers, this filter is utilized to its fullest advantage in the 500-TH to pull in distant stations with "crystal" clearness. A distinct advantage of crystal filters, as compared with conventional filter coils, is that they never need alignment.

The AM-IF section is equipped with a 4-resonator ladder-type ceramic filter of exceptionally high selectivity. This filter assures vastly improved reception of distant AM stations and, in addition, eliminates annoying whistles. It provides optimum bandwidth for vastly superior AM reception

The AM section also features a 3-gang variable capacitor, a tuned RF and a mixer section using a newly developed dual-transistor circuit to minimize noise and prevent overloading.

 

Specifications

FM Tuner Section

Usable Sensitivity (IHF Standard):  1,7 µV

Harmonic Distortion (at 400 Hz, 100% Mod.):  less than 0,4%

Signal-to-Noise Ratio (at 100% Mod. 1 mV input):  65 dB

Selectivity Alternate Channel:  70 dB

Spurious Response rejection (at 100 MHz):  100 dB

Image Frequency Rejection (at 100 MHz):  65 dB

IF Frequency Rejection (at 100 MHz):  80 dB

FM Stereo Separation (at 400 Hz):  38 dB

Capture ratio (IHF at 1 mV):  1,5 dB

AM Tuner Section

Sensitivity:  10 µV

Selectivity (at 1 MHz and ±10 kHz):  80 dB

Image Frequency Rejection (at 1 MHz):  70 dB

IF Frequency Rejection (at 1 MHz):  65 dB

Amplifier Section

Music Power (at 1 kHz, 8 Ω ):  200 watts ±1 dB

IHF Dynamic Power (8 Ω ):  75/75 watts

RMS Power (at 1 kHz, 8 Ω ):  65 /65 watts

Total Harmonic Distortion (at 1 kHz):  0,5%

Intermodulation DIstortion (60/7000 Hz, 4;1, smpte):  0,8%

Power bandwidth (IHF, 8 Ω ):  8 to 35,000 Hz

Sensitivity (rated output at 8 Ω )

Phono Low :  2,5 mV

Phono High :  10,0 mV

Auxiliary :  250 mV

Monitor :  300 mV

Recorder Output (30% FM Mod.):  400 mV

Hum and Noise (below rated output)

Volume at Minimum :  -90 dB

Phono Low (6-mV ref.):  -60 dB

Auxiliary (400-mV ref.):  -65 dB

Frequency Response

Phono Low :  30 to 15,000 Hz ±2 dB

Auxiliary :  20 to 25,000 Hz ±1,5 dB

Power Amplifier Section :  15 to 40,000 Hz ±1,5 dB

Maximum Input Signal (at 1% T.H.D.)

Phono Low :  50 mV

Auxiliary :  4,5 volts

Input Impedance

Phono Low :  50 k Ω

Auxiliary :  175 k Ω

Damping Factor (1 kHz, 8 Ω ):  better than 30

Control Tracking Error (0 to -50 dB):  less than 2 dB

Separation (at 1 kHz)

Phono :  better than 45 dB

Auxiliary :  better than 50 dB

Controls

Bass :  24 dB at 50 Hz

Treble :  24 dB at 10 kHz

Subsonic Filter:  12 dB /pcatve below 10 Hz

Low-Frequency Filter (12 dB/octave):  -3 dB at 50 Hz

High-Frequency Filter (12 dB/octave):  -3 dB at 5,000 Hz

General

Power Supply:  100-120 AC, 50/60 Hz

Power Consumption:  Max. 240 watts / 320 VA

Dimensions (W x H x D):  16-7/8" x 4-13/16" x 14-1/2"

Weight:  30 lbs