Harman/Kardon 930 receiver

Twin powered AM/FM and Stereo FM solid state receiver

Harman/Kardon engineering skill has been incorporated into a superb receiver; the 930. we say with full confidence that the Harman/Kardon 930 creates a new standard for stereo high fidelity receivers

 

The twin-powered amplifier section

The Harman/Kardon 930 is the first receiver in the world with two totally separate power supplies. Several manufacturers imply that their receivers incorporate two power supplies in reality, they employ a single supply with negative and positive voltages. The 930 also employs negative and positive voltages But, in addition, each chabnnel is completely isolated and has its own power transformer and electrolytics. Each channel has its own regulated voltages to permit that channel to respond to full RMS power output without being affected by the other channel. Thus, the 930 guaranteed flawless performance regardless of how much power the amplifier is called upon to deliver.

 

Power rating

Power rating is one of the most abused specifications in high fidelity. Despite the existance of standard procedures, it is often the manufacturer who determines the conditions under which power is rated. Harman/Kardon engineers believe that Continuous power, calculated from TMS voltage measurements, is the only meaningful way to rate power output.

But such a rating is still insufficient. Firstly, Continuous power output must be measured with both channels driven simultaneously at a specified distortion level. Secondly, the load impedance and power line voltage at which the measurement was taken must be given.

Finally, the measurements should be made across the entire frequency spectrum, rather than at 1,000 Hz. In short, the conditions under which the receiver is measured should be similar to those under which it will be used.

 

The preamplifier.

The 930's preamplifier delivers a signal so pure that its distortion cannot be measured with any degree of accuracy, even on the most sophisticated analysers. Only professional separate components can match this preamplifier section's hum noise and frequency response specifications.

One of the most important specifications of any high quality preamplifier is that of phono overload. The 930 specification is equal to or better than that of any receiver available. The 930 preamplifier can handle an input signal 50 times greater than that required to drive it to full output. This makes it virtually impossible to distort the preamplifier output.

What is more, absolute accuracy in playing back stereo records is assured as a result of the extremely tight tolerance of the RIAA playback curve.

 

The Tuner section

The tuner section of the 930 is a worthy companion to its superb amplifier. It employs high gain integrated circuits and matched ceramic filters. The result is hard limiting and excellent alternate channel selectivity. Hard limiting permits the detection of all FM stations - weak or strong - with equal clarity. Noise and distortion are completely eliminated. What's more, the excellent capture ratio and alternate channel selectivity mean that even weak stations will emerge free of interference from adjacent strong stations, impulse noise, and multipath interference. Precise alignment of the IF section is "frozen" into the circuitry and never requires realignment.

An FET front end, coupled with a four ganged tuning capacitor assures maximum sensitivity. The ultra-linear ratio detector delivers a precision composite signal to the multiplex section. Thus, even the highest frequencies are free of distortion.

The multiplex section employs balanced integrated circuitry which completely cancels SCA interference and high frequency phase distortion. It maintains maximum stereo separation throughout the entire audio range.

The FM muting circuit is of unique design which provides a smooth-as-velvet muting transition. In reality, it's simply go, no-go muting.

In short, the tuner section of the 930 assures unsurpassed sensitivity and selectivity and achieves a degree of excellence on a par with the receiver's amplifier.

 

Specifications

Amplifier Section

Power Output:  45/45 watts, RMS , both channels driven into an 8 Ω  load, from 20 - 20,000 Hz at less than 0,5% T.H.D. 120 volts, 50/60 Hz AC (same specification applies to 220 volts, 50 Hz model)

Power Bandwidth:  From less than 10 Hz to beyond 40 kHz at less than 0,4% T.H.D. into 8 Ω , both channels driven simultaneously.

Total Harmonic Distortion :  less than 0,5% at 45/45 watts. Power output into 8 Ω , 20 - 20,000 Hz, both channels driven simultaneously (typically runs 0,2% from 20 - 20,000)

00,7% (10 - 40,000 Hz) at 1 watt both channels driven simultaneously

Intermodulation DIstortion :  Less than 0,15% at full rated output

Input Sensitivity:  1,5 volts for full output

Hum and Noise:  better than 85 dB below rated output (Unweighted)

Damping Factor:  30:1 below 20 Hz

Input Impedance:  33,000 Ω

Frequency Response:  From below 4 Hz to beyond 70 kHz ±0,5 dB at normal power levels. From below 1 Hz to beyond 100 kHz ±1,0 dB at normal power levels

Square Wave Till:  less than 5% at 20 Hz. Typical tilt is less than 2%

Square Wave Rise Time:  less than 2 microseconds

Stability:  Absolutely stable with all types of speakers including electrostatic

Preamplifier Section

Audio Output:  0 to 2,5 V, RMS, minimum

Frequency Response:  from below 3 Hz to above 100 kHz ±0,5 dB

Total Harmonic Distortion :  less than 0,05% at 2 V output, 20 - 20,000 Hz

Square Wave Tilt:  less than 5% at 20 Hz, Typical 2% at 20 Hz

Square Wave Rise Time:  less than 1,5 microseconds

Noise (Unweighted): 

Low level:  65 dB below 2 volts at 10 millivolts input reference.

High level:  80 dB below 2 volts, Volume control wide open

Residual :  90 dB below 2 volts

Input Impedance: 

Phono :  47 k Ω

Aux :  20 k Ω

Output Impedance:  less than 1,000 Ω

Phono Overload:  90 millivolts

Tone Controls:  ±12 dB boost and cut, bass and treble

Tuner Section

FM sensitivity:  1,8 mV , IHF

Limiter Saturation:  less than 1,5 mV

Ultimate Signal-tonoise:  70 dB

Capture Ratio:  less than 2 dB

Alternate Channel Selectivity:  better than 50 dB

Image Rejection:  90 dB

Spurious Response Rejection:  90 dB

IF Rejection:  90 dB

Fundamental Plus Half IF:  90 dB

AM rejection:  better than 60 dB

Level Meter Sensitivity:  50 mV (25%); 1000 mV (100%)

Audio Frequency Response :  Below 15 Hz to beyond 30 kHz ±1,0 dB

Total Harmonic Distortion :

Mono :  0,5%

Stereo :  0,6%

Multiplex Separation:

100 Hz :  33 dB

1 kHz :  38 dB (40 dB typical)

10 kHz  :  30 dB

Antenna Impedance:  75 and 300 Ω

AM Loop Sensitivity:  better than 200 mV /1m

Selectivity:  35 dB average of lower and upper selectivities

Image Rejection:  better than 60 dB

IF Rejection:  better than 60 dB

Dimensions (W x H x D):  432 x 349 x 120 mm (17" x 13-3/4" x 4-3/4")

Weight:  13,1 kg (29 lbs)

 

Tandberg TR-1040 receiver

The FM Receiver

The FM receiver has MOSFET transistors giving good reception for weak and strong stations. Extra linear phase response and high selectivity with 4-pole ceramic filters. A good performance is obtained from the integrated IF amplifier and detector. The FM stereo decoder has integrated circuits that include a phase-locked-loop oscillator giving good channel separation over the complete frequency range. The stereo decoder has automatic or manual change-over between mono and stereo. Active filters remove the stereo systems pilot tone and auxiliary carrier wave. Precise tuning is easy with the two large tuning meters, a big advantage, especially with stereo transmissions. The FM receiver is equipped with a muting circuit that removes inter-station noise.

 

Power amplifier

The amplifier has been designed to handle extremely heavy loads. Automatic protection circuits keep watch over it constantly. tR-1040 has a direct coupled, short-circuit proof output stage. Complementary output transistors give very low distortion. An electronic controlled relay protects the loudspeakers from accidental d.c. damage. Automatic thermal protection disconnects the amplifiers if they are overheated (from bad ventilation) and connects them again immediately the temperature has fallen.

 

Pre-amplifier

The pre-amplifier is designed for a transcription unit or record player with a magnetic pick-up. All the inputs are adjustable. Three effective filters (1 Low and 2 High) attenuate disturbing noise from program sources. An extra refinement is the separate bass and treble controls for each channel which permits equalization for bass and treble differences resulting from asymmetrical positioning of loudspeakers.

 

Specifications

Audio Section

Power Output:  average continuous sinewave power is 40 watts minimum rms per channel, both channels driver into 8 ohms load, from 20 to 20,000 Hz with no more than 0,2% t.h.d from 1/4 watt to 40 watts as specified herein.

Total Harmonic Distortion :maximum 0,2% at any power from 1/4 watt up to rated power.

Intermodulation Distortion:  0,2%

Damping Factor:  50 at 8 Ω , 20 - 20,000 Hz

Frequency Range:  Linear inputs from 7 to 70,000 Hz (-1,5 dB)

Controls

Treble :  ±15 dB at 10,000 Hz

Loudness Comp. : +7 dB at 10,000 Hz

Bass :  ±16 dB at 50 Hz

Loudness Comp. : +12 dB at 50 Hz

Low Filter:  -3 dB at 70 Hz (-12 dB /oct.)

High Filer 1 :  -3 dB at 8000 Hz (-12 dB/octave)

High Filter 2 :  -3 dB at 8000 Hz (-6 dB /octave)

Channel Separation: 

Phono :  52 dB (at 1 kHz)

Tape :  56 dB (at 1 kHz)

Signal-to-Noise Ratio (IHF)

Phono :  68 dB

Tape 1, 2 :  82 dB

Sensitivity:

Phono :  1,8 to 6,0 mV

Tape 1, 2 :  130 to 500 mV

Main Amplifier Sensitivity:  200 mV

Input Impedance :  10 k Ω

Outputs

Tape 1 and Tape 2 Outputs (Unloaded)

DIN Socket :  200 mV

Phono Socked :  1 V

Pre-Amplifier Output:  1 V / 1 k Ω 

FM Section

Tuning Range:  87,5 to 108 MHz

Sensitivity IHF:  2,0 µV at 300 Ω

50 dB Quieting:  3,5 µV at 300 Ω

Selectivity:

Carrier down (alternate channel) 100 dB at ±400 kHz

IHF Dynamic (alternate channel) 80 dB at ±400 kHz

Carrier Down  (adjacent channel) 40 dB at ±200 kHz

IHF Dynamic  (adjacent channel) 10 dB at ±200 kHz

Spurious Response:  better than 95 dB

Capture Ratio (at 1 mV ant. volt, selectively measured):  0,9 dB

Total Harmonic Distortion (at 100% modulation)

Mono :  0,2%

Stereo :  0,3%

Channel Separation (at 100 Hz to 10,000 Hz, selectively measured):  better than 40 dB

Pilot Tone Suppression: better than 68 dB

38 kHz Suppression:  better than 60 dB

SCA Suppression: better than 70 dB

General:

Main Voltage:  120 V (Internal Connections for 120/220/240 V ) 50/60 Hz

Dimensions (W x H x D):  440 x 132 x 310 mm (17-1/2" x 5-3/16" x 12-1/4") + knobs 20 mm (3/4")

Weight:  9 kg (20 lbs)

 

Rotel RX-802 receiver

We've the fine wood-grain cabinet off of the RX-802 to give you a perfect picture of what performance in a high-quality AM/FM stereo receiver looks like. So see for yourself. It's all here. A masterful blend of the very latest circuitry. Low-noise, long-life silicon transistors integrated circuits. An AM/FM front end that's out front in sensitivity and performance. A power amplifier section that's - well, we'll let you decide for yourself what it is after hearing the giant 6,800 mfd block capacitors in action. And an advanced NF and IC equalizer amplifier. This and more, all within the good looking RX-802 enclosure. And all there for one reason. To give you the most satisfying experience in stereo dynamics that you've had to date. Inside and out, the RX-802 is not only the sweetest looking receiver on the music market, it's the sweetest sounding sweetest looking.

 

The performance begins here

With a high-performance, high-sensitivity FM front end. The RX-802 has dual-gate MOS FET's and a 4-gang linear-frequency tuning capacitor, the latter largely contributes to sensitivity and performance which you will translate directly into musical enjoyment. If you.ve thought all along that all receivers were basically the same, you'll stop where RX-802 performance begins.

 

FM IF and AM IF sections

In the FM IF section, 2 high-gain ICs housing 6 differential amplifiers and two linear-phase ceramic filters get together to achieve brilliant selectivity and rejection characteristics. In the AM IF section, a hard working ceramic filter provides equally efficient selectivity. Together with an RF stage in the AM front end, the sum of RX-802 AM features is performance that perks up all ears, no matter how tired.

 

A tower of power

A stable, split-power supply high-lights the amplifier section, which includes to 6,800 midblock capacitors and an oversized power transformer. That's a lot of satisfaction. It's also a lot of power which the RX-802 maintains constantly. This section also has directly-coupled OCL complementary circuitry to keep the power up and the distortion down, from one end of the audio spectrum to the other - 50 watts per channel, min. RMS, both channels driven simultaneously into 8 ohms from 20 to 20,000 Hz with no more than 0,5% Total Harmonic Distortion. And "steady she goes" doesn't only apply to ships. Now it describes the dampening factor and output characteristics which achieve superb transient response throughout the very low frequency range.

 

NF and IC equalizer amplifier

Genuinely outstanding RIAA characteristics are achieved through low-distortion, directly coupled NF (negative Feedback) circuitry combined with high voltage IC. Reproduction is more transparent than ever before. And added bonus is that tone control circuitry benefits from the same directly coupled NF circuitry.

 

PLL MPX section

Phase Lock Loop integrated circuitry and other new circuitry innovations in the MPX section result in improved stereo separation and frequency response. Distortion goes way down and stays there.

 

Specifications

Amplifier Section

Continuous Power Output (min. RMS)

50 watts per channel, both Channel Driven into 8 Ω  from 20 to 20,000 Hz with no more than 0,5% t.h.d

60 watts per channel, both Channel Driven into 8 Ω at 1 kHz with no more than 0,5% t.h.d

Harmonic Distortion:  less than 0,05% (8 Ω , 1 kHz, 90% rated power)

Intermodulation Distortion :  less than 0,15% (8 Ω , 90% rated power)

Power Bandwidth (IHF):  5 to 50,000 Hz (8 Ω )

Frequency Response:  10 to 100,000 Hz ±3 dB, 1W/1W

Damping Factor:  40 (8 Ω , 1 kHz)

Input Sensitivity/Impedance:

Main IN :  100 mV/ 34 k Ω

Tape Monitor :  140 mV / 26 k Ω

Aux 1, 2 :  140 mV / 26 k Ω

Phono 1, 2 :  2,4 mV / 40 k Ω

Tape Output Level:  280 mV/ 1,7 k Ω

Phono Overaload:  150 mV (1 kHz)

Phono Equalization:  RIAA standard ±0,5 dB

Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour:  ±6 dB/100 Hz +4 dB/10 kHz

Crosstalk:  50 dB / 10 kHz

Hum and Noise (Continuous Power Output)

Phono :  65 dB

Tape :  80 dB, Residual 0,5 mV

Speaker Impedance:  4 to 16 ohms

FM Tuner Section

Frequency Range:  88 to 108 MHz

Sensitivity (IHF):  1,5 microvolts

Signal-to-Noise Ratio :  70 dB

Harmonic Distortion: 

Mono :  0,2%

Stereo :  0,4%

Selectivity:  80 dB ±400 kHz

Capture Ratio:  1,0 dB

Stereo Separation:  40 dB at 100 Hz, 40 dB at 1 kHz, 35 dB at 10 kHz

IF Rejection:  100 dB

Image Rejection:  100 dB

Spurious Response Rejection:  100 dB

SCA Suppression:  70 dB

AM Suppression:  55 dB

AM Tuner Section

Frequency Range:  520 to 1650 kHz

Sensitivity:  15 microvolts

Selectivity:  50 dB ±10 kHz

IF Rejection:  80 dB

Image Rejection:  80 dB

Signal-to-Noise Ratio:  55 dB

General

Power Requirements:  AC 100, 120, 220, 240 V, 50/60 Hz

Power Consumption:  450 W max

Dimensions (W x D x H):  24" x 15" x 5-3/8"

Weight:  13,5 kg (35,2 lbs)

 

Toshiba SA-850 receiver

Digital Synthesizer Stereo Receiver

Absolutely Precise Digital Synthesizer Tuning with 12 memory Positions, 4 Instant Selection of 6 FM and 6 AM Stations.

Beautifully styled with walnut side panels and brushed aluminum front panels. Lower half of front panel disappears into the unit to expose less often used controls. Double-pair speaker selection, tone control defeat (flat) switch, subsonic filter, loudness switch, stereo/mono mode selection, push-button source selection with full tape monitoring/duplicating facilities including a source-on/recording-off position.

Green LED tuner frequency, signal-strength, stereo and band displays. All push-button tuning system using quartz crystal digital synthesizer system providing manual and automatic tuning with six each preset memory stations for FM and AM.

A professional 41-position click-stop volume control is conveniently located at the upper right. Superb craftsmanship coupled with advanced technology -  the essence of Toshiba's attitude toward high fidelity component design.

 

Quartz Reference Frequency Synthesizer Tuner

Both the FM and AM tuner sections make use of quartz crystal reference frequency and digital frequency synthesizer circuits with PLL system to insure essentially perfect station tuning each and every time. What's more, the ultra-stable control voltage of the PLL is used to tune the 3-gang variable capacitance diodes of the front-end for excellent sensitivity and adjacent channel rejection. This means more received signal power for higher Signal-to-Noise Ratio and less phase distortion than from conventional tuners.

 

Manual and Automatic Tuning

You get your choice of tuning either manually or automatically with push-button selection. In the manual mode, you can tune up or down the FM band in 0,1 MHz increments while for AM, the increments are 1 kHz. In the automatic mode (FM :  Auto Tuning, AM : 10 kHz step tuning), you have a choice of any of six present stations and this holds true for either AM or FM giving you twelve preset stations in all. And more, presenting the station frequency is just as simple by manually tuning to the desired station and pressing two buttons (memory and channel). Channel frequencies are retained with power off and even for a good time with the power cord removed from the outlet.

 

Clean Stereo Amplification for Low Noise at High Power Levels

Full-complementary direct-coupled power amplifiers provide 50 Watts rms power per channel into 8 Ω  and are driven by low distortion differential amplifiers and powerful Darlington drivers with plenty of feedback for inaudible distortion. Clean power supply designs using an extra-large triple-secondary power transformer and twin 10,000 µFd filter capacitors keep power line noise and hum out of the outputs and prevent back-coupling to the low level preamp and tuner stages.

 

Full Tape Monitoring/Duplicating

You get provisions for attaching two three-head (or other) tape decks to the SA-850 with full monitoring provisions plus duplicating switching between the decks either way, 1 to 2 or 2 to 1. and, to isolate the input amplifiers of the decks when their power is off, a special intermediate source monitoring switch position (REC OFF) has been added which eliminates the record output signals to the decks.

 

Wide Range Sound Quality Controls

A large 41-position click-stop volume control is conveniently located at the top, right of the SA-850 to give you level control capability. Twin-pair speaker selection switching lets you fully utilize speakers in remote locations and provides silent operation for use with headphones. Bass/treble controls can be defeated by just loudness control. A subsonic filter eliminates rumble and other low frequency player/disc problems which occur occasionally and a mode switch permits monaural deck playback through both speakers.

 

Specifications

Main Amplifier Section

Power Output (Both Channels Driven):  continuous power output of 50 Watts per channel , minimum rms int 8 Ω  from 20 to 20,000 Hz and with no more than 0,03% T.H.D.

55 watts into 8 Ω  at 1t 1,000 Hz

Total Harmonic Distortion( (20 to 20,000 Hz, 8 Ω )

0,03% or less at 50 Watts per channel

0,02% or less at 25 Watts per channel

0,02% or less at 1 Watt per channel

Intermodulation Distortion (50 Hz : 7000 Hz signals mixed at 4 : 1 , at 8 Ω )

0,03% or less at 50 Watts per channel

0,02% or less at 25 Watts per channel

0,02% or less at 1 Watt per channel

Power Bandwidth:  10 to 35,000 Hz

Residual Noise:  0,5 mV rms into 8 Ω

Damping Factor:  50

Preamplifier Section

Frequency Response

Aux :  10 to 40,000 Hz +0,5, -1,0 dB

Phoo :  20 to 20,000 Hz ±0,3 dB

T.H.D:  0,025 % or less

Subsonic Filter:  16 Hz , 6 dB/oct

Signal-to-Noise Ratio

Phono :  78 dB (2,5 mV), 90 dB (10 mV)

Tape/AUX :  95 dB

Phono Overload Level:  200 mV rms 1,000 Hz

Input Sensitivity/Impedance

Phono :  2,5 mV/47 k Ω

Tuner/AUX :  150 mV/47 k Ω

Tape :  150 mV/47 k Ω

Output Level: 

Tape Rec :  150 mV

Tone Control

Bass :  ±10 dB at 100 Hz

Trebble :  ±10 dB at 10,000 Hz

Loudness Control (-40 dB position)

+8 dB at 100 Hz;  +4 dB at 10,000 Hz

FM Tuner Section

Usable Sensitivity:  10,3 dBf (1,8 µV)

50 dB Quieting Sensitivity:

Stereo :  38,2 dBf (45 µV)

Mono :  15,3 dBf (3,2 µV)

Signal-to-Noise Ratio

Stereo :  68 dB

Mono :  72 dB

Distortion (1,000 Hz )

Stereo :  0,2%

Mono :  0,15%

Frequency Response:  20 to 15,000 Hz +0,5 -1,5 dB

Capture Ratio:  1,0 dB

Selectivity:  80 dB

Spurious Rejection:  75 dB

Image Rejection:  60 dB at 98 MHz

Subcarrier Rejection:  60 dB

IF Rejection:  90 dB

AM Suppression:  50 dB

Muting Threshold:  13,3 dBf (2,5 µV)

Stereo Separation:

45 dB at 1,000 Hz

30 dB from 30 to 15,000 Hz

Antenna

300 Ω  balanced twin-line feeder

75 Ω  unbalanced coaxial cable

AM Tuner Section

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

Selectivity:  35 dB

Signal-to-Noise Ratio:  50 dB

Image Rejection:  35 dB

IF Rejection:  30 dB

General

Power Requirements:  AC 120 V, 60 Hz

Power Consumption:  220 W (2,7 A)

Dimensions (W x H x D):  480 x 115 x 390 mm (18,9" x 4,5" x 15,4")

Weight:  12 kg (26,4 lbs)

 

Kenwood KR-9600 receiver

AM/FM Stereo Receiver

The KR-9600 Receiver puts independent power supplies behind each channel, so demanding musical passages in one channel won't cause distortion in the other. At 160 watts per channel minimum RMS power at 8 Ω , from 20 to 20,000 Hz, with no more than 0,08% Total Harmonic Distortion. The KR-9600 is the most powerful receiver we have ever made. What's more the KR-9600 is loaded with special features. A mid-range presence control, MIC mixing and source fading a deviation meter for source fading, a deviation meter for perfect off-air recording and 2 big power meters, to mention a few.

 

Kenwood's finest KR-9600 incredible power, advanced new circuitry and full complement of controls for unsurpassed performance. Features:

Dual power supplies end crosstalk distortion

Two selectable-range Power meters

Separate equalizer amplifiers for Phono 1 and Phono 2

FM front end couples a dual-gate MOS FET with 5-gang tuning capacitor for the theoretical limit in FM sensitivity (1,5 µV)

Low-distortion, 8-element linear phase IF filter

PLL in FM Multiplex for improved stereo separation

FM Dolby deemphasis switch

Dual function Signal/Deviation Meter

Microphone input for overdub on tape and Public Address

 wo tape deck capability with bi-directional dubbing and tape-through circuit

Triple tone controls with Defeat switch

Optional CB-15 walnut veneer cabinet available

 

Specifications

FM Tuner Section

Usable Sensitivity:  8,7 dBf (1,5 µV)

50 dB Quieting Sensitivity:

Mono :  14,1 dBf (2,8 µV)

Stereo :  36,1 dBf (35 µV)

Signal-to-Noise Ratio

Mono :  75 dB

Stereo :  70 dB

Total Harmonic Distortion

Mono :  0,15%

Stereo :  0,2%

Frequency Response:  20 Hz to 15,000 Hz +0 dB, -1,5 dB

Capture ratio:  1,3 dB

Alternate Channel Selectivity:  83 dB

Spurious Response Ratio:  115 dB

Image Response Ratio:  100 dB

IF Response Ratio (Balanced):  115 dB

AM Suppression Ratio:  60 dB

Stereo Separation:  45 dB at 1,000 Hz ; 35 dB from 50 Hz to 10,000 Hz

Subcarrier Product Ratio:  65 dB

Antenna Impedance

Balanced :  300 Ω

Unbalanced :  75 Ω

AM Tuner Section

Usable Sensitivity:  10 µV

Signal-to-Noise Ratio:  50 dB

Image Rejection:  70 dB

Selectivity (IHF):  35 dB

IF Rejection:  75 dB

Power Amplifier Section

Power Output (20 to 20,000 Hz with no more than 0,08% T.H.D.):

160 W per channel minimum RMS at 8 Ω 

200 W per channel minimum RMS at 4 Ω 

Dynamic Power Output:  750 W (at 4 Ω )

Total Harmonic Distortion

0,08% at rated power into 8 Ω

0,05% at 1 W power into 8 Ω

Intermodulation Distortion (60 Hz : 7 kHz = 4 : 1)

0,08% at rated power into 8 Ω

0,05% at 1 W power into 8 Ω

Power Bandwidth:  5 Hz to 50,000 Hz

Damping Factor:  55 at 8 Ω

Input Sensitivity/Impedance: 1 V/50 k Ω

Speaker Impedance:  4 Ω  to 16 Ω

Pre Amplifier Section

Input Sensitivity/Impedance

Phono 1 :  2,5 /50 k Ω

Phono 2 :  5,0 mV / 50 k Ω

Aux :  150 mV/50 k Ω

Tape :  150 mV/50 k Ω

Mic :  1,5 mV/50 k Ω

Signal-to-Noise Ratio

Phono 1 :  76 dB

Phono 2 :  80 dB

Aux :  95 dB

Tape :  95 dB

Mic :  65 dB

Maximum Input Level

Phono 1 :  500 mV (RMS) T.H.D. 0,08% at 1,000 Hz

Output Level/Impedance

Tape Rec Pin :  150 mV/100 Ω

Tape Rec DIN :  30 mV/80 k Ω

Pre Out :  1 V/5,3 k Ω

Frequency Response;

Phono 1 :  RIAA standard curve +0,2 dB, -0,2 dB

Aux , Tape :  20 Hz to 40,000 Hz +0 dB, -1 dB

Mic :  100 Hz to 8 ,000 Hz +0 dB, -3 dB

Controls

Bass :  ±10 dB at 100 Hz

Mid :  ±10 dB at 800 Hz

Treble :  ±8 dB at 10,000 Hz

Loudness Control (-30 dB): +3 dB at 100 Hz; +6 dB at 100 Hz

Low Filter :  -9 dB at 100 Hz

High Filter :  -9 dB at 10 kHz

General

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

Power Consumption:  820 W at full power

AC Outlet:  1 Switched, 2 Unswitched

Dimensions (W x H x D):  580 x 169 x 420 mm (22-27/32" x 6-21/32" x 16-17/32")

Weight Net:  24 kg (52,9 lbs)

 

Rotel RX-602 receiver

AM/FM Stereo Receiver

Add a high performance, high-sensitivity tuner to advanced PLL MPX circuitry, then add a high-power, low-distortion power amplifier to all the other RX-602 features, and what does it all add up to. An experience in sound that you'll not only want to have around to set the pace of your living room enjoyment, but one you'll also find hard to resist because the price makes the professional quality so readily accessible.

 

A high-performance, high-sensitivity tuner

For truly fantastic sound enjoyment, the high-performance,, high-sensitivity tuner Rotel engineers for the RX-602 gives you super high sensitivity, excellent rejection characteristics, and distortion  so low it's negligible. For a big boost in selectivity along with fasting reliability, ceramic filters and advanced integrated circuitry go snugly into the FM IF section.

 

The Power Amp

It's high-power, low-distortion all the way. With split power supply and 100% directly coupled OCL circuitry (OCL circuitry has low-noise silicon transistors that give 40W/40W continuous music power into 8 ohms at less than 0,5% T.H.D. both channel driven - or 35W/35W RMS continuous power into 8 ohms at less than 0,5% T.H.D. both channel driven from 20 to 30,000 Hz). If that's not superb output, you tell us what is.

Advanced NF and IC equalizer amp

Advanced because of the advanced electronics - low-distortion , 2-stage directly coupled NF (Negative Feedback) circuitry with high-voltage integrated circuitry achieve genuinely outstanding RIAA characteristics. For terrifically transparent reproduction quality, tone control circuitry also features directly coupled negative feedback circuitry.

 

FM and Audio Muting

FM muting effectively removes inter-station noise during tuning. Audio muting instantly lowers the volume level by -20 dB without disturbing the volume setting when temporary lowering of volume is necessary.

 

Extra-wide Linear FM dial scale and large tuning

The extra width of the linear FM Dial scale results in easy , precise tuning. The size of the vernier scale makes it easy to see. Large tuning meters complement this ease all the more with smooth flywheel action knob that get you right-on to a station quickly.

 

PLL MPX section

Utilization of PLL (Phase Loock Loop) integrated circuitry and other improved circuitry in the MPX section allows for effective stereo esparation and excellent frequency response. Distortion never gets in the way of stereo enjoyment.

 

The performance and the advanced electronics that make RX-602 enjoyment possible are enclosed in a cabinet that stands out in any system; hair-line brushed extruded aluminum front with luxury  metal knobs. Cabinet itself has a beautiful simulated walnut finish. This long, lean look is human-engineered up, down, and all-around to be a great looker and an equally great performer.

 

Specifications

Amplifier Section

Music Power Output (IHF) :  170 W (4 Ω )

Continuous Power Output (RMS, each Channel Driven) :  60 W / 60 W (4 Ω ); 45 W / 45 W (8 Ω )

Continuous Power Output (RMS, both Channels Driven) :  48 W / 48 W (4 Ω ); 40 W / 40 W (8 Ω ); 35 W / 35 W (8 Ω , from 20 to 20,000 Hz at less than 0,5% T.H.D.)

Harmonic Distortion:  less than 0,1% (32 W/32 W RMS)

Intermodulation DIstortion :  less than 0,15% (32 W/32 W RMS)

Power Bandwidth (IHF):  5 to 50,000 Hz (8 Ω )

Frequency Response:  10 to 100,000 Hz ±3 dB

Damping Factor:  40 (8 Ω , 1 kHz)

Input Sensitivity/Impedance:

Main IN :  820 mV/ 33 k Ω

Tape Monitor :  130 mV / 50 k Ω

Aux 1, 2 :  130 mV / 60 k Ω

Phono 1, 2 :  2,5 mV / 60 k Ω

Tape Output Level:  300 mV/ 3 k Ω

Phono Overaload:  130 mV (1 kHz)

Phono Equalization:  RIAA standard ±0,5 dB

Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour:  ±8 dB/100 Hz +4 dB/10 kHz

Crosstalk:  50 dB / 10 kHz

Hum and Noise (Continuous Power Output)

Phono :  65 dB

Tape :  80 dB, Residual 0,5 mV

Speaker Impedance:  4 to 16 ohms

FM Tuner Section

Frequency Range:  88 to 108 MHz

Sensitivity (IHF):  1,8 microvolts

Signal-to-Noise Ratio :  67 dB

Harmonic Distortion:  0,2%

Selectivity:  70 dB ±400 kHz

Capture Ratio:  1,5 dB

Stereo Separation:  40 dB at 100 Hz, 40 dB at 1 kHz, 35 dB at 10 kHz

IF Rejection:  100 dB

Image Rejection:  80 dB

Spurious Response Rejection:  100 dB

SCA Suppression:  70 dB

AM Suppression:  55 dB

AM Tuner Section

Frequency Range:  525 to 1650 kHz

Sensitivity:  20 microvolts

Selectivity:  30 dB

IF Rejection:  50 dB

Image Rejection:  50 dB

General

Power Requirements:  Ac 100, 120, 220, 240 V, 50/60 Hz

Power Consumption:  200  max

Dimensions (W x D x H):  22-1/2" x 13" x 5-3/8"

Weight:  10 kg (22 lbs)