Kenwood 120
Watt Solid State Amplifier Model KA-4000
Features
120 watts of
IHF standard total music power enough to drive even low efficiency Hi-Fi
speaker
The wide
power bandwidth of 13 Hz to 30,000 Hz with very low IM distortion
Lever type
-20 dB muting switch of quick response for momentary quietness during telephone
call, etc.
2 dv step
type tone controls
Blue light
indicators for input selector switch
Lever type
high and low filter switches
Pre-amplifier
outputs for use with other power amplifier or multichannel system.
Main
amplifier inputs for the use with pther pre-amplifier, tuner and tape recorder
with pre-amplifier, and also these inputs enable you to drive the main
amplifier directly
Speakers
terminals for 2 sets of stereo speakers and front panel speaker selector switch
(A, B, A & B and Phones)
Large
Volume/Balance controls knob located in center of front panel.
Exclusive
blow-out proof automatic circuit breaker protects power transistors
SPECIFICATION
Power Output
(continous power; at any frequency from 20 -20,000 Hz):
Total
Music Power (IHF): 120 watts at 4 Ω; 100
watts at 8 Ω load
Continuous
Power:
Each channel
driven: 53/53 watts at 4 ohms load; 40/40 watts at 8 ohms load.
Both
channels driven; 41/41 watts at 4 ohms load;
32/32 watts at 8 ohms load.
Power
bandwidth (IHF): 13 Hz to 30,000 Hz
Harmonic
Distortion: Less than 0,5% at rated
output from 20 to 20,000 Hz
Intermodulation
Distortion (60 Hz & 7,000 Hz, 4:1):
Less than
0,3% at rated output or at any level of less than rated output;
Less than
0,1% at -3 dB rated output
Frequency
Response:
Main Amp.
only; 18 Hz to 50,000 Hz ±1 dB
High Level
Input; 20 Hz to 50,000 Hz ±1 dB
Sensitivity
(fro rated output at 8 ohms load):
Phono
1; 2 mV
Phono
2: 2 mV
Tape
Head: 2,3 mV
MIC: 2 mV
AUX: 200 mV
Tuner: 200 mV
Tape
Play: 200 mV
Main Amp
Input: 100 mV
Input
Impedance (at 1,000 Hz):
Phono 1
: 50 Kohms
Phono 2
: 50 Kohms
Tape Head
: 100 Kohms
MIC : 100 Kohms
AUX,Tuner,Tape
Play : 100 dB
Main Amp.
Input : 300 kohms
Signal-to-Noise
Ratio (below rated output):
Phono 1
: 65 dB
Phono 2
: 65 dB
Tape Head
: 63 dB
MIC : 67 dB
AUX, Tuner,
Tape Play : 77 db
Noise at
minimum volume control: 1mV at 8 ohms or 0,0125 milliwatts.
Output
Impedance (at speaker terminal):
0,29 ohm at
1,000 Hz
0,52 ohm at
50 Hz
0,29 ohm at
10,000 Hz
Damping
Factor (at 1,000 Hz):
55 at 16
ohms load
27,5 at 8
ohms load
Low Filter
(for rumble): 80 Hz Cutoff, 12 dB per
Octave
High Filter
(for scratch ): 8,000 Hz Cutoff, 12 dB
per octave
Bass
control: ±10 dB at 1000 Hz with 2 dB
step switch
Treble
Control; ±10 at 10,000 Hz with 2 dB
stepswitch
Power
Requirement/Consumption:
AC
110-120/220-230 volts, 50/60 Hz
18 watts
quiescent. 190 watts at full power
Dimensions: 16⁵/₁₆"
x 5 ⁵/₃₂" x 11 ¹/₃₂" (W x H x D)
Weight: 17,6
lbs
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