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)
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