Kenwood KR-7070
Data[edit]
General
- Manufacturer: Kenwood
- Model: KR-7070
- Year of manufacture: 1970 - 1971
- Made in: Japan
- Color: Silver, black, walnut wood cabinet
- Remote control: RC-70 wired remote control included
- Power consumption: 320 W at full output / 40 W without signal
- Dimensions: 432 x 165 x 370 mm
- Weight: 18 kg
- Original price approx.: 150'000 Yen (Japan, 1971), 2'500 DM
Connections
- Number of inputs:
- Phono 1: 2.5 mV / 50 kOhm, switchable 0.05 mV / 200 Ohm, 0.5 mV / 200 Ohm.
- Phono 2: 2.5 mV / 50 kOhm
- Microphone: 4 mV / 100 kOhm
- Aux: 180 mV / 100 kOhm
- Tape Play:
- Cinch: 100 mV / 100 kOhm
- DIN:
- Main In: 100 mV / 100 kOhm
- Antenna: FM (75 Ohm Unbalanced / 300 Ohm Balanced), AM.
- Number of outputs:
- Tape Rec (Cinch / DIN): 200 mV / 40 mV
- Pre-Out:
- Headphones
- 2 pairs of speakers
Technical Data Tuner Part
- Reception: FM, MW
- Frequencies:
- FM: 88 - 108 MHz
MW: 520 - 1610 kHz
- Frequency response: 20 - 15,000 Hz (± 1.2 dB, FM)
- Input sensitivity:
- FM: 1.6µV
- MW: 15µV
Distortion factor:
- Mono: < 0.4
Stereo: < 0,6 %
- Signalrauschabstand:
- UKW: >70 dB
- MW: > 50 dB
- Common mode selection: 1.5 dB
- Channel separation (1 kHz / 10 kHz): > 35 dB / > 25 dB
- selectivity:
- FM: > 75 dB
MW: > 25 dB
- Co-wave selection: > 100 dB
- Spurious wave selection: > 55 dB
- Mirror frequency attenuation:
- FM: > 100 dB
- MW: > 70 dB
IF attenuation:
- FM: > 100 dB
MW: > 70 dB
- AM suppression:
Technical Data Amplifier Part
- Continuous power (at distortion factor)
- 8 Ohm: 2 x 90 W
- 4 Ohm: 2 x 110 W
- mono output: 5 W
- Dynamic power
- 8 Ohm: 220 W (IHF)
- 4 Ohm: 300 W (IHF)
- Total harmonic distortion: 0.1 % at full scale
- Attenuation factor: 50 at 8 Ohm, 100 at 4 Ohm
- Frequency response: 20 - 40000 Hz ± 1.5dB
- Power bandwidth(IHF): 10 - 30000 Hz
- Signal to noise ratio:
- Phono 1/2: 65 dB
- Microphone: 67 dB
- Aux/Tape Play: 75 dB
- Tone control:
- Bass: ± 10 dB at 100 Hz
Treble: ± 10 dB at 10 kHz
- Loudness: 2-stage
Mid: + 6 dB / 100 Hz
- Max: + 10 dB / 100 Hz, + 5 dB / 10 kHz
- Low Filter: -7 dB at 100 Hz
- High Filter: -10 dB at 10 kHz
- Presence: 2-stage:
- + 6 dB at 400 Hz
+ 6 dB at 1 kHz
- Audio Muting: - 20 dB
Special Features
- Cable remote control RC-70 for car tuning
- Presence switch
- Separable pre- and power amplifier
- Microphone / Phono switch
- 2 microphone inputs
- Kenwood original microphone MC-501 optionally available
- FM center display instrument
- FM Muting
- Note: in some countries the unit was originally supplied with metal cover. The walnut wood case was available as an option under the designation SR-77 for example in the USA for 24.95 US-$.
Remarks[edit]
- Other models of the same series:
- FM multipath output to oscilloscope such as.
- [[Kenwood KC-6060 A
- Kenwood KC-6060 A
Pictures[edit]
- Kenwood KR-7070
- Kenwood KR-7070 front description
- Kenwood KR-7070 Rear Description
Reports[edit]
- External review on website "Mackern": [[1]]
Links[edit]
- External link: Audio Heritage Japan website: [2]</0,6>