Kenwood Stereo Receiver Model KR-9050




Stereo Receiver Information:

Kenwood AM/FM high speed DC stereo receiver model KR-9050. Manufactured from 1979 to unknown. Next up from the KR-8050. Rated at 200 watts per channel. Features, two tape in/outputs, two phono and one aux inputs, bass, mid and treble controls, DC Coupled, high filter, tone on/defeat, stereo sens, FM muting on/off, If Band narrow/wide. Also features a mic input with mix control, has both tuning and signal meters, also both right and left channel output power meters. High end Kenwood monster receiver.

POWER AMPLIFIER SECTION

Power Output

200 watts* per channel. minimum RMS both

channels driven, at 8 ohms from 20 to 20,000

Hz with no more than 0.02% total harmonic distortion.

Both Channels Driven

into 8ohm at 1.000 Hz.............210W * 210W

into 4ohm at 1.000 Hz............250W - 260W

Dynamic Power Output..........600W at 8 ohm

               Total Harmonic Distortion

(20 Hz lo 20,000 Hz from AUXI

rated power into 8ohm.............0.02%

1W power into 8ohm..............0.007%

Intermoduration Distortion

160 Hz :7 kHz = 4:1 SMPTEI

rated power into 8ohm...........0.0045%

1W power into 8 ohm............... 0006%

Slew Rate ..........................±110V/»sec

Rise Time............................0.95 «sec

Frequency Response............. DC to 280.000 Hz-3 dB

                  Signal to Noise Ratio

(A weighted)......................... 115 dB

Damping Factor.......120 to 20 kHz at 81!) ...... 50

Input Sensitivity. Impedance . 1V/50 kohm

           PRE AMPLIFIER SECTION

           Input Sensitivity Impedance

PHONO 1.2 .................. 2 5 mV/50 kohm

AUX and TAPE...................200 mV/5O kohm

MIC ........................... 2.2 mV/60 kH

Signal to Noise Ratio (A weighted)

PHONO 1. 2.......................85 dB for 2 5 mV input

91 dB for 5.0 mV input

AUX and TAPE................. 110 dB lor 200 mV input

MIC ............................74 d8 (or 2.2 mV input

Maximum Input Level

at 1.000 Hz.....................260 mVIRMSI. T H D. 0.02%

Frequency Response

PHONO RIAA

Standard Curve..................20 Hz to 20.000 Hz ±0 2 dB

AUX and TAPE....................5 Hz to 210.000 Hz - 3 dB

Tone Control

Bass...................................±12 dB at 100 Hz

(50 Hz Boost) ..............110 dB at 50 Hz

Mid.................................±10 dB at 800 Hz

Treble...........................±12 dB at 10 kHz

Loudness Control

(VOL. -30 dB' 1 +8 dB at 100 Hz

i +5 dB at 100 Hz

Subsonic Filta. ........18 Hz 6 dB/oct

High Filter .......7 kHz 6 dB/oct

Output Level/lmpedance

TAPE REC Out 'Pin.... 200 mV/300B

TAPE REC Out (DIN) 30 mV/80 kD

PRE Out..............................l.0 V/1 kohm

FM TUNER SECTION

Usable Sensitivity.................9 8 dBf (1.7 iiV\

50 dB Quieting Sensitivity

Mono............................ 14.1 dBf (2.8 yV) IL 9 (ll.l^v j

Stereo...............................36 1 dBf (35 pV>

Stereo Sensitivity

position 1 (S/N 40 dB)........25.2 dBf (10 yV) ' !>~

position 2 (S/N 60 dB) .... 45 2 dBf (100 yV)

Signal to Noise Ratio at 65 dBf

Mono..........................83 dB

Stereo........................ 76 dB

77 dB at 10 mV input

Total Harmonic Distortion

Mono.............................007%

Stereo.............................. 0.1%

Frequency Response... 20 Hz to 15,000 Hz ±0.5 dB

Capture Ratio......................... 1.0 dB

Image Rejection Ratio ........ 105 dB

Spurious Response Ratio...... 115 dB

IF Response Ratio..........105 dB

Alternate Channel Selectivity

WIOE............................35 dB at 300 kHz

NARROW.........................60 dB at 300 kHz

AM Suppression Ratio...........65 dB

Stereo Separation Ratio ....... 50 dB at 1.000 Hz    40 dB at 50 Hz to 10.000 Hz

Subcarrier Product Ratio........73 dB

Antenna Impedance..............3001! Balanced and 76R unbalanced

FM Frequency Range........... 88 MHz to 108 MHz

AM TUNER SECTION

Usable Sensitivity ...............10 »V (250 PV/m)

Signal to Noise Ratio.............55 dB

Image Rejection..................50 dB

Selectivity..................... ........45 dB

GENERAL

Power Consumption ......... 1.200 watts at full power

AC Outlet...........................Switched 1. Unswitched 2.

Dimensions............................W: 602 mm (23-11/16"l

H: 177 mm (6-31/32") D: 465 mm (18-5/16")

Weight (Net).....................24.0 kg (52.9 tbs)

(Gross)......................26.0 kg (57.3 los)


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Website: http://www.kenwood.net


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