Harman/kardon PM665 Vxi

Data

General

• Manufacturer: Harman/kardon
• Model: PM665 Vxi
• Years of manufacture: 1988 - early 90s

? * Manufactured in: America / Woodbury > - Made in Japan - (it says on the back)

• Color: black, champagne
• Type: analog
• Remote control: -
• Power consumption: max. 600W
• Dimensions: 443 x 134 x 398 mm
• Weight: 16,3 kg
• Original price approx.: 1800 DM

Connections

• Number of inputs:
  • Phono MM: 2.2 mV / 47 kOhm, 125-425 pF.

phono MC: 120 uV / 56 Ohm Video, CD: 135 mV / 22 kOhm Main In: 0.8 V / 22 kOhm Tape1 In Tape2 In

• • Tuner
  • AUX
  • A/V
• Number of outputs:
  • Tape1 Out
  • Tape2 Out

Specifications

• Sine Continuous Power (FTC) [20Hz - 20kHz, 2 channel operation]
  • 8 ohms: 150 W per channel @ < 0.08% THD into 8 ohms.
  • 4 Ohm: 150 W per channel @ < 0.08% THD into 4 Ohm
• Dynamic power
  • High Voltage/High Current Mode: (per channel)
    • 8 Ohm: 200 W (IHF 1kHz signal pulse)
    • 4 Ohm: 340 W (IHF 1kHz signal pulse)
    • 2 Ohm: 500 W (IHF 1kHz signal pulse)
  • High Current Mode: (per channel)
    • 4 Ohm: 200 W (IHF 1kHz signal pulse)
    • 2 Ohm: 340 W (IHF 1kHz signal pulse)
• Total negative feedback: 12dB
• Total harmonic distortion:
• Attenuation factor: 65
• Power bandwidth at half output power into 8 ohms:
  • <10 - 100,000 Hz
• Frequency response:
  • 0.2 - 150,000 Hz (1 W, +0/-3 dB).
• Signal-to-noise ratio:
  • Phono MM: 80 dB

phono MC: 76 dB Video, CD: 98 dB

• • Main-In: 110 dB
• Stereo channel separation:
• Tone control:
  • Bass: Cut-off frequency selectable (200/400 Hz).
  • Treble: Cutoff frequency selectable (2/6 kHz).
• Loudness: +10dB @ 50Hz (phase shift [300Hz - 20kHz] <5° )
• Subsonic: 15Hz, 6db/octave
• Treble filter: 6kHz, 6db/octave
• Mute: -20dB
• Direct/Line-Straight (deactivates the tone control)

Special Features

• High instantaneous current capability (HCC) +-80A
• Two completely separate power supplies and power transformers
• Can also switch picture signals (composite)

Remarks

Most powerful model in Harman's PM series. Typical problem: scratching, noise and partial channel failure due to oxidized switches. Power transistors as spare parts only very limited available. Elkos usually no problem. One of the best integrated amplifiers ever built with an incredible amount of "steam and pressure" and a very good phono preamplifier. Even today, it does not have to hide from much more expensive noble devices.

Other models in the series:

• PM640 Vxi, PM645 Vxi, PM650 Vxi, PM655 Vxi.

Pictures

• also of the interior see links.

Reports

• Audio 1988, see links.

Links

• Audio comparison test 1988 with Revox B 250 among others.
• PM665 Vxi at radiomuseum.org]
• Pictures of the interior of the 665 Vxi at hifi-classic-reparatur.de dated 02 February 2014, retrieved 17 December 2017.

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