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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.



H.H. Scott '59





Kenwood KR-6170 receiver

Jumbo Stereo Receiver KR-6170

High fidelity, to most people, still means authentic reproduction of broadcast or pre-recorded sound. A sophisticated electronic device for increasing one's listening pleasure. Advent of Kenwood's epoch-making KR-6170 Jumbo Stereo Receiver, however, has completely changed this concept. Stereo today is for playing as well as for listening. A completely new field of stereo enjoyment. Play or practice your favourite musical instrument to the accompaniment of Electronic Rhythm Composer which produces 12 different rhythms. Five electronic percussions are also at your beck and call. It can make your party. But that's not why it's a Jumbo

KR-6170 is also equipped with Reverberation Unit; Echo-Sound Output terminals for 4-channel reproduction; 4-sets of speaker terminals (A, B, C, D and any combination0; 2-Hour Timer for automatic shut-off; 2 jacks for both Guitar and Microphone (with Mike-Mixing Volume Control); 2 pairs of tape Monitor circuits; Foot-Start Switch for Rhythm Composer and Dynamic Mike; etc.

All this housed in a single Jumbo unit with a power output of 180 watts. This is the New Stereo, geared to listening and playing pleasure.

 

Reverberation Unit

The KR-6170 features exclusive Reverberation Unit offering echo effect. Thanks to the strictly selected materials for spring and damper. It has no unnaturalness. The reverberating time can be controlled up to maximum 2 seconds by the Level Adjustor.

The another extraordinary feature is Reverberation Mode Switch which enables selecting input sources to be reverberated. At "source" position the reverberation is added to all the sources. Guitar, Microphone and Rhythm can be independently reverberated. The listening and playing pleasure is greatly enhanced.

 


Electronic Rhythm Composer

12 different rhythm varieties can be produced by 5 electronically composed percussions. KR-6170 has clearly changed the concept of a receiver with adding the enjoyment of "play along" besides that of listening. The built-in features are:

Tempo Control - offering tempo variety slow to quick

Rhythm Mode Switch - reproducing mode of a rhythm is selectable according to the situation

Rhythm Tone Control - booth of high and low tone volume can be independently increased or decreased in order to obtain the most suitable rhythm balance

Rhythm Selector - by the pushbuttons 12 rhythms are selectable

Foot Switch - as an accessorised part the foot remote pedal is attached for easy use while the hands are occupied.

 


Specifications

Continuous Power Output:

50/50 watts each channels at 4 Ω 

40/40 watts each channels at 8 Ω

Total Harmonic Distortion :  0,5% (at rated); 0,1% (at -3 dB rated)

Intermodulation Distortion:   0,5% (at rated); 0,2% (at -3 dB rated) 

Frequency Response:

High Level (Aux) Input :  20 - 40,000 Hz ±1,5 dB

Power bandwidth (IHF):  17 - 30,000 Hz

Input Sensitivity/Impedance (for Rated Output)

Phono 1, 2 :  2,5 mV/50 k Ω

Mic :  2,0 mV/10 kohm

Guitar :  15 mV/30 k Ω

Aux 1, 2 :  150 mV/100 k Ω

Tape Play A, B :  150 mV/100 k Ω

Main Input :  100 mV

Hum and Noise

Phono 1, 2 :  65 dB

Mic :  58 dB

Aux, Tape Play :  75 dB

Damping Factor ( at 8 Ω ):  50

Speaker Impedance: 4 - 16 Ω

Multi Presence Control:  Selector-Defeat/Loudness (at 100 Hz ; +10 dB, at 10,000 Hz ; +5 dB)/Tone/Jazz/Vocal/Mood

Bass Control:  ±10 dB at 100 Hz

Treble Control:  ±10 dB at 10,000 Hz

Electronic Rhythm Composer Section

Rhythm Selector: 1 - March; 2 - Fox Trot; 3 - Rock; 4 - R & B; 5 - Ballad; 6 - Shuffle; 7 - Boss nova 1; 8 - Boss nova 2; 9 - Latin Beat; 10 - Mambo; 11 - Waltz; 12 - jazz Waltz

Electronic Percussions:  5 different Sounds

Rhythm Mode Switch:  Left, Right; stereo, Reverse, Mono

Start Switch:  Off, Start

Tempo Control:  Slow to Quick

Rhythm Tone:  Low-bass Drum Level; high High Hat, Claves Level

Reveberation Section

Level Control:  0 to 2 seconds

Mode:  Off-source-Guitar-Mic-Rhythm

Timer Section:  2 hours

General

AC Outlets:  Switched x 1 ; Unswitched x 2

Power Requirements:  110 -120 V, 220 - 240 V, 50/60 Hz

Power Consumption:  at full power 240 watts, at no signal 45 watts

Dimensions (W x H x D):  552 x 171 x 425 mm (21-3/4" x 6-3/4" x 16-1/4")

Weight:  16 kg (35,2 lbs)


 

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