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)

 

Harman/Kardon hk750 amplifier

The new hk750 is the logical extension of our widely acclaimed 700 Series High Technology Separates - a sophisticated integrated amplifier that produces 45 watts per channel into 8 Ω

As with the rest of the 700 Series, the 750 has been designed with low negative feedback to keep TIM and Total Harmonic Distortion well below audible levels.

The 750 also has features you might not expect on other comparable integrated amps. Like a 5 stage, fully discrete phono pre-amp section that's extremely fast and quiet. Plus a toroidal power supply that can easily handle two pairs of speakers while substantially reducing both hum and stray noise. Two tape copy/monitor positions are provided for dubbing and monitoring. And the 750 also features loudness control, subsonic and hi cut filters, as well as tone defeat.

The hk750 integrated amplifier is the pefect solution for the audiophile who wants the sophistication of our High Technology Separates with the simplicity and economy of an integrated amplifier.

 

Specifications:

RMS Power (20 - 20,000 Hz into 8 Ω , less than 0,03% T.H.D.) :  45 watts

Frequency Response (at rated output):  below 1 Hz - 150 kHz (-3 dB)

Intermodulation DIstortion :  0,05%

TIM Distortion (at rated output):  0,01%

Slew Rate/Power Amplifier:  60 Volts/µsec

Overall Negative Feedback:  25 dB

Hum and Noise (A Weighted):

Phono :  -88 dB

Aux :  -100 dB

Residual :  -100 dB

Phono Overload:  better than 150 mV

 

Harman/Kardon hk680i receiver

The hk680i, with 60 watts per channel, is the first Harman Kardon receiver ever with the advanced technology of digital quartz-locked tuning. That means the tuner section automatically locks into the exact dead center of the broadcast signal every time. And stays there drift-free.

The 680i also features a memory system that allows you to store up to 6 AM and 6 FM stations, and recall them at the touch of a button. And tuning couldn't be easier. You can tune up or down manually by pressing one of the tuning buttons, or you can let the receiver scan automatically for you.

Each time the scanner reaches a station, it will stop and allow the station to play for several seconds. It will continue scanning and playing until you find the station you want and defeat the scanning system.

In addition, the 680i gives you other convenience features. Like tape copy and tape monitoring capabilities for two decks. Tone defeat. Subsonic and high filters. Muting defeat and more.

The hk680i. It brings the accuracy of digital technology to an affordable receiver.

 

Specifications

Amplifier Section

RMS Power Into 8 Ω  (20 -20,000 Hz) :  60 watts at less than 0,02% T.H.D.

Frequency Response:  below 1 Hz - 150 kHz (-3 dB) at rated output

Intermodulation Distortion: 0,04% at rated output

TIM Distortion:  0,009% at rated output

Slew Rate/Power Amplifier:  65 volts/µsec

Overall Negative Feedback:  25 dB

Hum and Noise "A" WTD:

Phono :  -88 dB

Aux, Residual:  -100 dB,

Phono Overload:  better than 225 mV

Tuner Section

FM Sensitivity

Mono 300 Ω  :  1,8 µV (10,3 dBf)

50 dB Quieting Sensitivity

Mono 300 Ω  :  3,0 µV (14,8 dBf)

Stereo 300 Ω  :  35 µV (36,1 dBf)

FN Noise:  -75 dB

Capture Ratio:  1,2 dB

Alternate Channel Selectivity:  -80 dB

Stereo Separation (1 kHz):  55 dB

FM Frequency Response at Detector Output:  DC -100 kHz (-3 dB)

AM Sensitivity:  300 µV/m

Dimensions (W x H x D):  443 x 122 x 390 mm

Weight:  12 kg

 

Harman/Kardon hk690i receiver

The hk690i - it's the ultimate receiver from Harman/Kardon.

The hk690i provides the combination of pure power, sonic excellence and features that the true audiophile demands.

With its High instantaneous Current Capability of 45 amps, the hk690i will develop far more power under peak demand conditions than its rated 60 Watts per channel. In fact, its dynamic behavior approaches the ideal; the transient power nearly doubles into 4 ohms and continues to increase dramatically into 2 ohms. This means that the hk690i gives you louder, clearer sound than any other 60 Watt receiver.

It has an Ultrawideband Frequency Response of 0,2 Hz to 150 kHz, as well as low negative feedback for extremely fast and accurate transient response. The result is a virtual elimination of TIM distortion.

The phono section has a unique RIAA equalization circuitry  which maintains a constant low level of negative feedback throughout the audio frequency range. The tuner section automatically shuts off when the phono or aux buttons pressed to eliminate digital switching noise or the possibility of bleed-through.

The digital synthesized quartz-locked hk690i possesses a unique sample-and-hold MPX decoder to decrease high frequency switching noise while eliminating the need for much of the filtering normally required in FM processing.

Features normally expected to be found in top-of-the-line components are, naturally, included. Provisions for two tape decks (with tape copy capability) auto and manual tuning, 8 Am and 8 FM memory presets, switchable bass and treble turnover frequencies, a Moving Coil head amplifier, loudness control, subsonic and high cut filters, muting control and FM high blend.

 

Specifications

Amplifier Section

Power Output

RMS, per channel, (both channels driven into 8 Ω , 20-20,000 Hz):  60 Watts less than 0,06% T.H.D.

IHF Signal (Dynamic Power) at 4 Ω , 1 kHz :  120 watts

IHF Signa (Dynamic Power) at 2 Ω , 1 kHz :  150 watts

Negative Feedback (Overall):  12 dB

High Instantaneous Current Capability (HCC):  45 Amps

Power Bandwidth (at half-rated Output, 8 Ω ):  less than 10 Hz - 100 kHz

Frequency Response (at 1 Watt Output, +0 -3 dB):  0,2 Hz - 150 kHz

TIM:  Immeasurable

Slew Rate:  200 V/µsec

Square Wave Rise Time:  1,8 µsec

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

Signal-to-Noise Ratio (IHF A Weighted, ref. 1 Watt output (New IHF)

Phono MC :  78 dB; 500 µV input

Phono MM :  80 dB; 5 mV input

Aux :  80 dB; 0,5 V input

Input Sensitivity/Impedance

Phono MC :  120 µV /47 k Ω 

Phono MM :  2,2 mV/47 k Ω , 125 pF

Aux :  135 mV/22 k Ω

Overload at 1 kHz :  200 mV/Infinite

RIAA Equalization (20 Hz - 20 kHz): ±3 dB

Tone Controls

Bass :  ±10 dB at 50 Hz

Treble :  ±10 dB at 100 kHz

Subsonic Filter:  15 Hz, 12 dB/oct

Tuner Section

Usable FM Sensitivity (dBf/µV - 75 Ω)

Mono:  10,8 dBf / 0,95 µV

50 dB Quieting Sensitivity (dBf/µV - 75 Ω)

Stereo:  14,6 dBf / 1,65 µV

FM Signal-to-Noise Ratio

Stereo:  76 dB

Capture Ratio:  1,0 dB

Alternate Channel Selectivity:  70 dB

iF Rejection:  110 dB

AM Rejection (45 dBf):  60 dB

Stereo Separation (1 kHz, 65 dBf, 100% mod.):  55 dB

FM T.H.D. (1 kHz, 100% mod.)

Mono :  0,06%

Stereo :  0,08%

Am Sensitivity:  15 µV (ext. Ant.)

AM Alternate Channel Selectivity:  45 dB

AM Image Rejection:  33 dB

AM IF Rejection:  60 dB

Dimensions (W x H x D):  440 x 134 x 368 mm (17-3/8" x 5-1/8" x 14-1/2")

Weight:  10 kg (21 lbs 19 oz)

 

Harman/Kardon hk590i receiver

Harman/Kardon's state-of-the-mind technology is expertly exemplified in the hk590i receiver

The hk590i offers a full 45 watts per channel, with 35 amps of High instantaneous Current Capability (HCC) available under peak demand conditions. With the transient power nearly doubling into 4 Ω  and continuing to increase dramatically into 2 Ω , the dynamic behavior approaches the ideal.

The Ultrawideband Frequency Response of the hk590i of 0,2 Hz to 150 kHz in the amplifier section works along with the phono section's dual RIAA circuitry to provide the most open, transparent sound.

The tuner section shuts down when the phono or aux buttons are pressed to eliminate the possibility of digital switching noise or bleed-through. Switchable bass and treble turnover frequencies allow for custom-tailoring of the tone-control characteristics to the listening environment. In addition, the hk590i has tone defeat and 2-way tape capability.

The digital synthesized quartz-locked tuning section of the hk590i can be tuned up or down manually or will scan automatically to the next station. For added convenience, stations may  be locked into one of the 8 AM and 8 FM memory presets.

 

 

Specifications

Amplifier Section

Power Output

RMS, per channel, (both channels driven into 8 Ω , 20-20,000 Hz):  45 Watts less than 0,08% T.H.D.

IHF Signal (Dynamic Power) at 4 Ω , 1 kHz :  95 watts

IHF Signa (Dynamic Power) at 2 Ω , 1 kHz :  120 watts

Negative Feedback (Overall):  12 dB

High Instantaneous Current Capability (HCC):  35 Amps

Power Bandwidth (at half-rated Output, 8 Ω ):  less than 10 Hz - 100 kHz

Frequency Response (at 1 Watt Output, +0 -3 dB):  0,2 Hz - 150 kHz

TIM:  Immeasurable

Slew Rate:  120 V/µsec

Square Wave Rise Time:  1,8 µsec

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

Signal-to-Noise Ratio (IHF A Weighted, ref. 1 Watt output (New IHF)

Phono :  80 dB; 5 mV input

Aux :  80 dB; 0,5 V input

Input Sensitivity/Impedance

Phono :  2,2 mV/47 k Ω , 125 pF

Aux :  135 mV/22 k Ω

Overload at 1 kHz :  170 mV/Infinite

RIAA Equalization (20 Hz - 20 kHz): ±3 dB

Tone Controls

Bass :  ±10 dB at 50 Hz

Treble :  ±10 dB at 100 kHz

Subsonic Filter:  15 Hz, 12 dB/oct

Tuner Section

Usable FM Sensitivity (dBf/µV - 75 Ω)

Mono:  10,8 dBf / 0,95 µV

50 dB Quieting Sensitivity (dBf/µV - 75 Ω)

Stereo:  15,6 dBf / 1,65 µV

FM Signal-to-Noise Ratio

Stereo:  75 dB

Capture Ratio:  1,0 dB

Alternate Channel Selectivity:  70 dB

iF Rejection:  80 dB

AM Rejection (45 dBf):  52 dB

Stereo Separation (1 kHz, 65 dBf, 100% mod.):  50 dB

FM T.H.D. (1 kHz, 100% mod.)

Mono :  0,08%

Stereo :  0,12%

Am Sensitivity:  15 µV (ext. Ant.)

AM Alternate Channel Selectivity:  45 dB

AM Image Rejection:  33 dB

AM IF Rejection:  60 dB

Dimensions (W x H x D):  440 x 134 x 368 mm (17-3/8" x 5-1/8" x 14-1/2")

Weight:  8 kg (17 lbs 10 oz)

 

Harman/Kardon hk490i receiver

High Technology Receiver hk490i, features

High Instantaneous Current Capability (HCC)

Low Negative Feedback

Ultrawideband Response

Exceptional FM Audio Sound Quality

Digital Synthesized Quartz-locked Tuning

 

The hk490i, with its high instantaneous current capability of 18 amps, will develop far more power under peak loads than its rated 30 watts per channel. In fact, the dynamic behavior approaches the ideal, in that the transient power nearly doubles into 4 Ω  and nearly quadruples into 2 ohms. That means the hk490i gives you louder, clearer, cleaner sound than any other 30 watt receiver.

With its ultrawideband frequency response of 0,2 to 150 kHz, the hk490i delivers very fast transient response, while virtually eliminating TIM distortion. The tuner section shuts down when the phono or aux buttons are pressed to eliminate digital switching noise or the possibility of bleed-through. There are also two tape monitors with copying ability and a subsonic filter.

The digitally synthesized quartz-locked tuner provides precise, drift-free reception. The display is DC driven,, to eliminate switching noise and distortion, and an auto FM switch automatically shifts the tuner into mono when the signal is too weak for stereo reception.

For convenience, stations may be locked into one of the 8 AM and * FM memory presets. In addition, the auto-mode switch scans up or down to the next station automatically.

By the way, since our equipment has always been designed to play original master tapes, we've been ready for digital audio and coming software advances - long before they've been ready for us.

 

Specifications

Audio Section

Power Output rms (both channel driven into 8 Ω , 20-20,000 Hz):  30 watts per channel (at less than 0,08% T.H.D.)

High Instantaneous Current Capability (HCC):  18 A

Power Bandwidth (at half rated output into 8 Ω ):  less than 10 Hz - 100,000 Hz

Frequency Response:  0,2 Hz - 150,000 Hz (+0 -3 dB)

Slew Rate:  120 V/µsec

Square Wave Rise Time (at 20 kHz):  1,8 µsec

Square Wave Tilt (at 20 Hz):  5%

Signal-to-Noise Ratio IHF A weighted

Phono :  80 dB

Aux, DAD :  83 dB

Input Sensitivity/Impedance

Phono :  2,2 mV / 47 k Ω  and 125 pF

Aux, DAD :  135 V / 22 k Ω

Tone Control Characteristics

Bass (Boost/Cut) :  10 dB / -10 dB at 50 Hz

Treble (Boost/Cut) :  10 dB / -10 dB at 10 kHz

Loudness Control:  +10 dB at 50 Hz / -10 dB at 10 kHz

Filters

Subsonic :  15 Hz, 8 dB/octave

High Cut :  6 kHz, 6 dB/octave

Tuner Section

Usable FM Sensitivity (Mono):  10,8 dBf (0,95 µV /75 Ω )

50 dB Quieting Sensitivity

Mono :  15,6 dBf (1,65 µV / 75 Ω )

Stereo :  36,6 dBf (18,5 µV / 75 Ω )

Alternate Channel Selectivity70 db

Stereo Separation (1 kHz)50 db

FM Total Harmonic Distortion (1 kHz, 100% modulation)

Mono :  0,08%

Stereo :  0,12%

AM Sensitivity:  15 µV (external antenna)

General

Power Requirements:  AC 120 V, 60 Hz

Power Consumption:  100 W

Dimensions (W x H x D):  443 x 134 x 365 mm (17-7/16" x 5-1/4" x 14-3/8")

Weight:  8 kg (17 lbs 10 oz)

Harman/Kardon 50+ receiver

Designed in the Citation tradition is, perhaps, the fundamental statement we make as we articulate our approach to product. During the past years, Harman/Kardon has rededicated itself to that perspective and to that commitment.

Our new line of multichannel products is a vivid extension of that philosophy. Clearly, these are products that stretch the state of the art. And products that establish new frontiers of engineering, integrity, creativity, and performance.

 

Special Features

Provision for double-power stereo or four channel. Special rear panel switch selects mode of operation.

Newly designed FM front end utilizes low noise transistors which provide amazing sensitivity with highest rejection of unwanted stations

Separate pushbutton on/off switch permits user to turn receiver on and off without upsetting careful positioning of controls

Large illuminated meter permits tuning of AM and FM stations with precise accuracy.

Tilting AM antenna permits user to position antenna for optimum signal strength

Heavy counter-weighted flywheel tuning provides smooth tuning action

Stereo/quad headphone receptacles permit user to employ stereo or quad head phones for personal listening. Special resistive padding prevents accidental overload.

Heavy duty, ultra-wideband output devices permit receiver to extend several octaves above and below the normal range of hearing for clean, totally transparent sound.

Prevision to monitor stereo or quad tapes

Sharply illuminated dial scale provides high visibility.

Provision for mono, stereo, SQ matrix, conversion of stereo-to-quad, discrete and discrete phono quad. (Discrete phono quad requires special adapter).

Gold plated escutcheon, blackout dial scale area and gold anodized aluminum knobs give the 50+the look of luxury.

 

Specifications

Continuous Power

Stereo :  25 watts RMS per channel into 8 Ω  at 1 kHz

Quad :  4 x 12,5 watts, RMS, per channel into 8 Ω  at 1 kHz

Total Harmonic Distortion :  0,3% at 1 kHz

Intermodulation DIstortion :  0,5% (40 &4,000 Hz) 3 dB down in power

Frequency Response:  18 - 74,000 Hz ±1 dB

Power Bandwidth:  28 - 30,000 Hz , 3 dB down

Matrix Phase Differential:  0° to ±6°

Matrix Overload:  4 volts, RMS, 20 - 20,000 Hz

Matrix Frequency Response:  20 - 20,000 Hz (uniform amplitude)

Hum and Noise: 

Phono :  -60 dB

Aux :  -63 dB

Damping Factor:  20 into 8 Ω

Controls

Bass  :  ±12 dB at 50 Hz

Treble  :  ±12 at 10 kHz

FM Sensitivity:  2,8 mV, IHF

FM Total Harmonic Distortion :  0,9%

Ultimate Signal-to-Noise Ratio :  62 dB

Capture Ratio:  3,0 dB

IF Rejection:  60 dB

Spurious Response Rejection:  60 dn

Stereo Separation:  30 dB

AM Sensitivity:  30 mV

Image Rejection:  40 dB

Dimensions (W x H x D):  15-5/8" x 4-3/4" x 12-3/4"

Weight:  18 pounds

 

Harman/Kardon 400XM cassette deck

 High technology metal cassette deck

The hk400XM is our top of the line cassette deck, and offers you the best of both worlds. High performance. And the sophisticated operating controls normally found only in professional equipment.

To start with, the 400XM is the most sophisticated design we ofer, with Dolby HX headroom extension, soft touch solenoid controls for fast, easy transport control, a two-motor transport for low wow and flutter (only 0,03%), and a 3-head configuration for simultaneous monitoring during the recording process.

Frequency Response is flat (±3 dB) for 15 to 20,000 Hz, with a Signal-to-Noise Ratio of 68 dB, using Metal tape and Dolby circuitry.

The 400XM's separate bias and equalization controls, tone generators and playback calibrators allow you to control all facets of the recording process for perfect results no matter which tape formulation you choose. LEDs indicate headroom safety to prevent saturation. We've even included a special shifting Dolby mark on the record level indicators. With conventional tape formulations, the Dolby mark remains in its normal position. But when metal tape is used, the Dolby mark automatically shifts upward to remind you of the new, higher setting you can use.

In addition to our Auto Program Search System, which lets you scan forward or backward automatically to sample each selection on the cassette, the 400XM also features an auto rewind/replay system. Engage the rewind system and when the tape ends the deck will automatically rewind the tape to its beginning. With both rewind and replay engaged, the deck will replay the tape automatically, too, rewinding and replaying each time the cassette ends.

 

Specifications

Wow and Flutter: 

NAB (WRMS) :  0,03%

DIN 45507 :  0,06%

Total Harmonic Distortion

Metal Tape :  0,8% (±3 dB below Dolby level)

Frequency Response:  15 Hz - 20 kHz ±3 dB

Signal-to-Noise Ratio

A Weighted with Dolby :  -68 dB

A weighted Doly Out :  -60 dB

Indicator Record Level Range:  -40 to +8 dB

Heads:  2

Channel Separation:  40 dB

Microphone Impedance Range:  600 Ω  - 50 k Ω

Harman/Kardon 200XM cassette deck

 

High Technology Metal Cassette Deck

The 200XM is the first popularly priced cassette deck on the market to give you both metal tape capabilities and the all new Dolby HX headroom extension

With metal tape, the 200XM gives a frequency response from 15 to 19,000 Hz (±3 dB) and Signal-to-Noise Ratio of 65 dB . Wow and flutter is only 0,04%

The 200XM also incorporates features that give you both extra convenience and added control over your reording. Our Auto Search System lets you automatically skip or replay a selection. And the output level control on the front panel lets you match the output of the hk200XM with the outputs from your other components.

For precision recording, you also get a bias fine trim that lets you adjust the bias precisely for the tape formulation you're using. And a choice of fast or slow meter balistics for easier readings of peak levels.

The hk200XM - a full featured metal deck with Dolby HX

 

Specifications

Wow and Flutter: 

NAB (WRMS) :  0,04%

DIN 45507 :  0,07%

T.H.D.

Metal Tape :  0,8% (±3 dB below Dolby level)

Frequency Response:  15 Hz - 19 kHz ±3 dB

Signal-to-Noise Ratio

A Weighted with Dolby :  -65 dB

A weighted Doly Out :  -57 dB

Indicator Record Level Range:  -20 to +8 dB

Heads:  2

Channel Separation:  40 dB

Microphone Impedance Range:  600 Ω  - 50 k Ω

Harman/Kardon hk670 receiver

 

Twin Powered DC coupled Ultrawideband AM/FM Stereo Receiver

 

Harman kardon engineering has one goal; to reproduce music in the home with uncompromising accuracy. Modern recordings rival the tonal balance, clarity and detail of the concert hall. A superior component must reproduce these characteristics faithfully.

It must deliver all the music.

The hk670 receiver is one of a new series from Harman Kardon designed, built, and tested with new understandings that go far beyond conventional ideas about distortion and the factors that make one component sound better than others. They are the most musically accurate receivers ever devised.

Features:

60 watts per channel

Ultrawideband design

Excellent pahse linearity

Superb transient response

Twin powered

Electronic circuit protection

DC coupled, low feedback power amplifier

Subsonic and high cut fiters

Tone control bypass

2-way tape duplication

Sensitive, selective FM section and new, low-noise FM section

SMQ tuning meter

LED FM in-tune indicator

Switchable interchannel noise suppression

Parallax-free tuning dial

Speaker selector switches

Soft-touch switches and controls

 

Specifications

Power Output: 

60 watts (min. RMS per channel , both channels driven into 8 Ω  from 20 Hz - 20 kHz at less than 0,06% T.H.D.)

75 watts (DIN 45 500) at 8 Ω

Power Bandwidth:  8 Hz to 100 kHz at less than 0,08% T.H.D. into 8 Ω , both channels driven simultaneously, at 30 watts rms per channel

Total Harmonic Distortion 0,03% (1 kHz at rated output)

Intermodulation Distrotion:  0,05% at rated output

Frequency Response:  below 3 Hz to 140 kHz -3,0 dB

Damping Facyor:  better than 30 at 8 Ω

Hum and Noise

Phono :  -90 dB A Weighted IHF

Aux :  -102 dB A Weighted IHF

Residual :  -102 dB A Weighted IHF

Slew Rate :  65 V/µsec

Square Wave Rise Time:  2,5 µsec at 20 kHz

Square Wave Tilt:  less than 2% at 20 Hz

Overall Negative fFeedback:  28 dB

Phono Sensitivity:  2,2 mV

Phono Overload:  better than 225 mV

Phono Equalization:  ±0,5 dB

Phono Input Impedance:  47 k Ω

High Level Sensitivity:  130 mV

Usable FM Sensitivity [mono]:  1,9 µV

50 dB Quieting:  3,0 µV [mono], 30 µV [stereo]

FM Noise:  -75 dB

Captire Ratio:  1,2 dB

Alternate Channel Selectivity:  -75 dB

Image Rejection:  - 80 dB

IF Rejection:  -110 dB

AM Rejection:  -62 dB

Stereo Separation:  55 dB at 1 kHz

FM Distortion

Mono :  0,05% at 1 kHz, 100% modulation

Stereo :  0,08% at 1 kHz 100% modulation

FM Frequency Response:  20 Hz to 15 kHz ±0,5 dB

AM Sensitivity:  300 µV/meter

AM Selectivity:  - 40 dB

Aalternate Channel Selectivity:  35 dB

Image Rejection:  -50 dB at 1 kHz

IF Rejection:  -45 dB at 1 kHz

Dimensions (W x H x D):  476 x 159 x 360 mm (18-1/2" x 6-1/4" x 14")

Weight:  12 kg (26 lbs)