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| __NOTOC__ | | __NOTOC__ |
− | == Data == | + | == Daten == |
− | {{navigation}} | + | {{Navigation}} |
− | '''General''' | + | '''Allgemein''' |
− | * Manufacturer: [[Kenwood]] | + | * Hersteller: [[Kenwood]] |
− | * Model: KA-80 | + | * Modell: KA-80 |
− | * Type: Integrated amplifier | + | * Baujahre: 1981 |
− | * Years of manufacture: 1980 - 1986 | + | * Hergestellt in: |
− | * Made in: Japan | + | * Farbe: silber |
− | * Color: Silver, Black | + | * Typ: Analog |
− | * Remote control: no | + | * Fernbedienung: - |
− | * Power consumption: 350 watts | + | * Leistungsaufnahme: 350 Watt |
− | * Dimensions: 440 x 78 x 330 mm (WxHxD) | + | * Abmessungen: 440 x 78 x 330 mm (B x H x T) |
− | * Weight: 7.9 kg | + | * Gewicht: 7,9 kg |
− | * Original price approx.: 598 DM | + | * Neupreis ca.: |
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− | '''Connections''' | + | '''Anschlüsse''' |
− | * Number of inputs: 4 + 1 | + | * Anzahl der Eingänge: 4? |
− | Phono MM (2.5 mV / 50 kOhm) | + | ** Phono MM (2,5 mV / 50 kOhm) |
| ** Tuner, Aux, Tape Play (150 mV / 50 kOhm) | | ** Tuner, Aux, Tape Play (150 mV / 50 kOhm) |
− | ** additional microphone | + | * Anzahl der Ausgänge: |
− | * Number of outputs:
| + | ** hier die Ausgänge aufzählen (mit Pegel/Impedanz) |
− | ** 1 x loudspeaker | |
− | ** 1 x headphones
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− | ** Rec-Out 150mV @ 47kOhm
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− | '''Technical Data''' | + | '''Technische Daten''' |
− | * Continuous power (at distortion) | + | * Dauerleistung (bei Klirrfaktor) |
| ** 8 Ohm: 2x 48 Watt (0,02%) | | ** 8 Ohm: 2x 48 Watt (0,02%) |
− | ** 4 Ohm: 2x 60 Watt (0.7%) | + | ** 4 Ohm: 2x 60 Watt (0,7%) |
− | ** brought in tests measured 2 x 65W @ 8Ohm // 2 x 88W at 4Ohm | + | * Dynamikleistung |
− | * Dynamic power:
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| ** 8 Ohm: | | ** 8 Ohm: |
| ** 4 Ohm: | | ** 4 Ohm: |
− | * Total harmonic distortion: | + | * Gesamtklirrfaktor: |
− | * Attenuation factor: > 120 @ 8Ohm | + | * Dämpfungsfaktor: 120 |
− | * Frequency response: DC - 450 kHz | + | * Frequenzgang: DC - 450 kHz |
− | Signal to Noise Ratio: Phono 86 dB / High Level 106 dB
| + | * Signalrauschabstand: Phono 86 dB / Hochpegel 106 dB |
− | * Stereo channel separation: > 68dB | + | * Stereokanaltrennung: |
− | * Tone control: yes | + | * Klangregelung: |
| ** Bass: ± 10 dB / 100 Hz | | ** Bass: ± 10 dB / 100 Hz |
− | ** Treble: ± 10 dB / 10 kHz | + | ** Höhen: ± 10 dB / 10 kHz |
− | * Loudness: yes | + | * Loudness: |
− | * High Filter: No | + | * High Filter: Nein |
− | * Low Filter (Subsonic): Yes - with activated tone control | + | * Low Filter (Subsonic): Nein |
− | * Mute: no | + | * Mute: |
− | * Direct/Line-Straight: yes (DC-coupled) | + | * Direct/Line-Straight: |
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− | '''Special Features''' | + | '''Besondere Ausstattungen''' |
− | * Foldable front panel | + | * abklappbare Frontblende |
− | * Microphone mixable
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− | * Low feedback power amplifier circuit
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− | * Very high slew rate - 150V/µsec.
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− | * Test winner in many gazettes
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− | * Reference device in its class
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− | * Considered as high-end suspicious
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− | == Comments == | + | == Bemerkungen == |
− | * Other models in the same series:
| + | Weitere Modelle der gleichen Serie: |
− | * Amplifier: | + | ** [[Kenwood KA-30|KA-30]] |
− | * [[Kenwood KA-30]] | + | ** [[Kenwood KA-50|KA-50]] |
− | * [[Kenwood KA-50]] | + | ** [[Kenwood KA-60|KA-60]] |
− | * [[Kenwood KA-60]] | + | ** [[Kenwood KA-70|KA-70]] |
− | * [[Kenwood KA-70]] | + | ** [[Kenwood KA-80|KA-80]] |
− | * [[Kenwood KA-80]] | + | ** [[Kenwood KA-500|KA-500]] |
− | * [[Kenwood KA-500]] | + | ** [[Kenwood KA-800|KA-800]] |
− | * [[Kenwood KA-800]] | + | ** [[Kenwood KA-900|KA-900]] |
− | * [[Kenwood KA-900]] | + | ** [[Kenwood KA-1000|KA-1000]] |
− | * [[Kenwood KA-1000]] | |
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| + | == Bilder == |
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− | * [[Tuner]]
| + | == Berichte == |
− | * [[Kenwood KT-30]]
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− | * [[Kenwood KT-50]]
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− | * [[Kenwood KT-60]]
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− | * [[Kenwood KT-80]]
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− | * [[Kenwood KT-500]]
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− | * [[Kenwood KT-800]]
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− | * [[Kenwood KT-900]]
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− | * [[Kenwood KT-1000]]
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− | * [[Tape Deck]]
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− | * [[Kenwood KX-50]]
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− | * [[Kenwood KX-70]]
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− | * [[Kenwood KX-400]]
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− | * [[Kenwood KX-500]]
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− | * [[Kenwood KX-600]]
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− | * [[Kenwood KX-800]]
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− | * [[Kenwood KX-1060]]
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− | * [[Kenwood KX-2060]]
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− | * [[Special accessories for this series]]
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− | * [[Kenwood AT-50]] Timer
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− | * [[Kenwood AT-80 D]] Timer
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− | * [[Kenwood AT-500]] Timer
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− | * [[Kenwood GE-80]] Equalizer
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− | * [[Kenwood PM-80]] Level meter
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− | * [[Kenwood RA-80]] Reverberator
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− | * [[Kenwood RC-500]] Remote control
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− | == Pictures == | |
− | * Extract from brochure: Kenwood KA-80
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− | [[File:Kenwood KA-80-Prospekt-1.jpg|1500px]]
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− | == Reviews ==
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− | * By limiting itself to the essentials, 'spartanly' equipped, so to speak, in current "slim-line" design, this 'small' Kenwood KA-80 makes an appearance. It offers an excellent, discrete MM-phono preamplifier with FET-input, which follows the RIAA-curve with high precision and is distortion-free high driveable. The only OP's are found in the microphone preamp (for karaoke!? = superfluous) and in the tone control stage, which can be switched out of the signal path, resulting in a complete DC signal path! Not often used controls are hidden behind a front panel flap and give the amplifier a simple, elegant appearance. The all-metal construction of the amplifier results in a heavy, stable hi-fi unit.
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− | * The power amplifier hybrid components (STK60II) of the KA-80 are not quite complete hybrid amplifiers, but contain only pre-driver/driver and power amplifier transistors (plus for optimal thematic coupling further components - diodes and R's) and are unjustly (!) often discriminated against. If you are interested you should have a look at the internal circuit of the STK60II and the environmental circuit chosen by Kenwood: If you know something about circuitry, a 'light' will come on: Everything is serious! At its time, the KA-80 was not exactly cheap (598,--DM), but today it is offered at a very reasonable price. The fact that it is equipped with two mains transformers does not mean a double mono setup, but is due to the flat design. The charge capacity of the power supply electrolytic capacitors is a modest 2 x 7.5mF/50V (too low dielectric strength), and can easily be increased to e.g. 2 x 15mF/63V electrolytic capacitors (35x50mm). There is further room for improvement: The stock power amp working points are set too high. This leads to a (too!) strong heating of the amplifier in idle state. Therefore, the output stage quiescent current should be reduced (by an expert!) by 1/3. This definitely has no effect on the sound, but it does lower the idle operating temperature considerably. Two further electrolytic capacitors (C105/C106) are undersized (25V) and should be replaced by 35V types. The resistors R167/R168 (390Ohm) should be replaced by 470Ohm/R168 and 560Ohm/R167, each at least 3Watt (!).
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− | The 'small' Kenwood works best with 8 Ohm loudspeakers with good efficiency, but can also handle loudspeakers with 4 Ohm nominal impedance; especially if the load capacitors are increased as described above. Speakers with nominal impedances below 4 ohms should be avoided - the KA-80 is not designed for this! In terms of sound, the amplifier, as well as the matching analogue rotary capacitor tuner [[Kenwood KT-80|KT-80]], offers absolutely serious, contemporary top hi-fi. Because of its overall characteristics, the KA-80 can absolutely justifiably be suspected of being "high-end". When used with high-quality (!) loudspeakers that are capable of resolving amplifier differences, this amplifier easily plays in the 1st league in terms of sound quality.
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− | PS: A fan must have edited my review here. To call KA-80 & KT-80 1st league is quite an exaggeration. It is styled middle class.
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− | In no case more.
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| == Links == | | == Links == |
− | * Review at Good Old Hifi: [http://www.good-old-hifi.de/kenwood_ka-80/]
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− | [[Category:Integrated Amplifier]] | + | [[Kategorie:Vollverstärker]] |