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__NOTOC__
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== Daten ==
== Data ==
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{{Navigation}}
{{navigation}}
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'''Allgemein'''
'''General'''
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* Hersteller: Harman/kardon
* Manufacturer: [[Harman/kardon]]
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* Modell: PM665 Vxi
* Model: PM665 Vxi
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* Baujahre: 1988 - Anfang 90er
* Years of manufacture: 1988 - early 90s
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* Hergestellt in: Amerika / Woodbury
? * Manufactured in: America / Woodbury
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* Farbe: schwarz/champagnergold
> - Made in Japan - (it says on the back)
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* Typ: analog
* Color: black, champagne
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* Fernbedienung: -
* Type: analog
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* Leistungsaufnahme: max. 700W
* Remote control: -
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* Abmessungen: 443 x 134 x 398 mm
* Power consumption: max. 600W
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* Gewicht: 15,0 kg
* Dimensions: 443 x 134 x 398 mm
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* Neupreis ca.: 2200 DM  
* Weight: 14.2 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'''
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'''Anschlüsse'''
* Sine Continuous Power (FTC) [20Hz - 20kHz, 2 channel operation]
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* Anzahl der Eingänge: (unverändert vom 655 Vxi übernommen / keine Garantie auf Richtigkeit)
**8 ohms: 150 W per channel @ < 0.08% THD into 8 ohms.
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**Phono MM: 2,2 mV / 47 kOhm / 125-425 pF
**4 Ohm: 150 W per channel @ < 0.08% THD into 4 Ohm  
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**Phono MC: 120 uV / 56 Ohm
* Dynamic power
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**Video, CD: 135 mV / 22 kOhm
**High Voltage/High Current Mode: (per channel)
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**Main In: 0,8 V / 22 kOhm
***8 Ohm: 200 W (IHF 1kHz signal pulse)
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* Anzahl der Ausgänge:
***4 Ohm: 340 W (IHF 1kHz signal pulse)
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**hier die Ausgänge aufzählen (mit Pegel/Impedanz)
***2 Ohm: 500 W (IHF 1kHz signal pulse)
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**High Current Mode: (per channel)
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***4 Ohm: 200 W (IHF 1kHz signal pulse)
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'''Technische Daten'''
***2 Ohm: 340 W (IHF 1kHz signal pulse)
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* Sinus Dauerleistung (FTC) [20Hz - 20kHz, 2  
* Total negative feedback: 12dB
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**8 Ohm: 150 W pro Kanal @ < 0.08% THD an 8 Ohm
* Total harmonic distortion:  
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**4 Ohm: 150 W pro Kanal @ < 0.08% THD an 4 Ohm  
* Attenuation factor: 65
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* Dynamikleistung
*Power bandwidth at half output power into 8 ohms:
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**High Voltage/High Current Modus:
**&lt;10 - 100,000 Hz
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***8 Ohm: 200 W (IHF 1kHz Signalimpuls)
* Frequency response:
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***4 Ohm: 340 W (IHF 1kHz Signalimpuls)
**0.2 - 150,000 Hz (1 W, +0/-3 dB).
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***2 Ohm: 500 W (IHF 1kHz Signalimpuls)
* Signal-to-noise ratio:
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**High Current Modus:
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***4 Ohm: 200 W (IHF 1kHz Signalimpuls)
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***2 Ohm: 340 W (IHF 1kHz Signalimpuls)
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* Gegenkopplung (gesamt): 12dB
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* Gesamtklirrfaktor:  
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* Dämpfungsfaktor: 65
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*Leistungsbandbreite bei halber Ausgangsleistung an 8 Ohm:
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**<10 - 100.000 Hz
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* Frequenzgang:
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**0,2 - 150.000 Hz (1 W, +0/-3 dB)  
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* Signalrauschabstand:
 
**Phono MM: 80 dB
 
**Phono MM: 80 dB
phono MC: 76 dB
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**Phono MC: 76 dB
Video, CD: 98 dB
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**Video, CD: 98 dB
 
**Main-In: 110 dB  
 
**Main-In: 110 dB  
* Stereo channel separation:
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* Stereokanaltrennung:
* Tone control:
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* Klangregelung:
**Bass: Cut-off frequency selectable (200/400 Hz).
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**Bass: Eckfrequenz wählbar (200/400 Hz)
**Treble: Cutoff frequency selectable (2/6 kHz).
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**Höhen: Eckfrequenz wählbar (2/6 kHz)  
* Loudness: +10dB @ 50Hz (phase shift [300Hz - 20kHz] &lt;5° )
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* Loudness: +10dB @ 50Hz (Phasenverschiebung [300Hz - 20kHz] <5° )
* Subsonic: 15Hz, 6db/octave
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* Subsonic: 15Hz, 6db/Oktave
* Treble filter: 6kHz, 6db/octave
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* Höhenfilter: 6kHz, 6db/Oktave
 
* Mute: -20dB
 
* Mute: -20dB
* Direct/Line-Straight (deactivates the tone control)  
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* Direct/Line-Straight (deaktiviert die Klangregelung)  
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'''Besondere Ausstattungen'''
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* Hohe Sofortstrom-Fähigkeit (HCC) +-80A
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'''Special Features'''
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Stärkstes Modell der PM-Serie von Harman.
* High instantaneous current capability (HCC) +-80A
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Typisches Problem: Kratzen, Rauschen und teilweise Ausfall der Kanäle wegen oxidierter Schalter.
* 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''':
 
* [[harman/kardon PM640 Vxi|PM640 Vxi]], [[harman/kardon PM645 Vxi|PM645 Vxi]], [[harman/kardon PM650 Vxi|PM650 Vxi]], [[harman/kardon PM655 Vxi|PM655 Vxi]].
 
== Pictures ==
 
[[File:Harman-kardon PM665 Vxi.jpg]]
 
* also of the interior see links.
 
== Reports ==
 
* Audio 1988, see links.
 
  
== Links ==
 
* [http://www.revoxsammler.ch/Testberichte%20Verstaerker/Verstaerker%20B250%201988.pdf Audio comparison test 1988 with [[Revox B 250]] among others.]
 
* [http://www.radiomuseum.org/r/harman_pm665_vxi.html PM665 Vxi at radiomuseum.org]]
 
* [https://hifi-classic-reparatur.de/2014/02/harman-kardon-pm665-vxi/ 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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Please fill in blanks in the article.
 
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[[Category:Integrated amplifier]]
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