Marantz - 2238B - Receiver
Manufacturer:
Equipment:
2238B
Date:
Category:
Group:
Sub Group:
Information
FOR U.S.A. MODEL ONLY AMPLIFIER SECTION:
RATED POWER OUTPUT, MINIMUM CONTINUOUS AVERAGE POWER PER
CHANNEL, BOTH CHANNELS DRIVEN....................... 38W
POWER
BAND..................................................................................................................................................................................
20 Hz to 20 kHz
TOTAL HARMONIC
DISTORTION................................................... ..............................................................................................................0.08%
LOAD
IMPEDANCE........................................................................................................................................
.....................................8 OHMS
RATED POWER OUTPUT, MINIMUM CONTINUOUS AVERAGE POWER PER
CHANNEL, BOTH CHANNELS DRIVEN....................... 48W
POWER
BAND...................................................................................................................................................................................
20 Hz to 20 kHz
TOTAL HARMONIC
DISTORTION....................................................................................................................................................................0.1%
LOAD
IMPEDANCE........................................................................................................................................................................................4
OHMS
I.M. Distortion
(I.H.F. method, 60 Hz and 7 kHz mixed 4:1 at rated
power output)
at 8 ohm load
impedance...................................................0.08%
at 4 ohm load
impedance...................................................0.1%
Damping Factor (at 20
Hz)...................................................................45
Sensitivity (at MAIN
IN)..................................................................
1.5V
Impedance (at MAIN
IN)......................................................
33k ohms
Frequency Response for Power Amp Only
(at 1 Watt output, 20 Hz to 20
kHz)................................+0.25 dB
PREAMPLIFIER SECTION:
Phono
Input Overload at 1
kHz...................................................... 100 mV
Equivalent Input Noise
............................................................1.5μν
Dynamic Range
(Dynamic Range is the ratio of input overload to
equivalent input
noise).........................................................96
dB
Input
Sensitivity......................................................................1.8
mV
Input
Impedance...............................................................47k
ohms
Input
Capacitance......................................................................100
pF
Frequency Response, RIAA 20 Hz to 20
kHz...................±1.0 dB
Signal-to-Noise Ratio
(at rated output and 7.75 mV
input)................................76 dB
High Level (Aux and Tape)
Input
Sensitivity............................................................
180 mV
Input Impedance . .
................................................ 20k ohms
Frequency Response
(includes power amp).............10 Hz to 60 kHz ± 1.25 dB
Signal-to-Noise Ratio
(ref. to rated output and 775 mV input)...................90 dB
Output Levels
Tape Out (ref. 7.75 mV at Phono inputs)................ 775 mV
Pre-Out (ref. 180 mV at Aux
inputs)............................. 1.5V
(ref. 500 mV at Aux inputs, main amp
disconnected)......................................................4.2V
Output Impedance
Tape
Out.........................................................................
600 ohms
Pre-Out............................................................................
900 ohms
FM TUNER SECTION:
Sensitivity
IHF
Usable...............................................................10.8
dBf (1.9μν)
IHF 50 dB Quieting
(Mono)................................16.1 dBf (3.2μν)
(Stereo).............................37.3 dBf ( 40μν)
Quieting Slope (Mono)
RF Input for 30 dB
Quieting................................9.3 dBf (1.6μν)
Quieting at:
20 dBf (
5.5μν)......................................................................55
dB
25 dBf (
10μν)......................................................................60
dB
40 dBf (
55μν)......................................................................70
dB
65 dBf
(1000μν)......................................................................75
dB
Quieting Slope (Stereo)
Quieting at:
30 dBf ( 17μν)................................
................................42 dB
40 dBf (
55μν)......................................................................53
dB
50 dBf (
173μν)......................................................................58
dB
65 dBf
(1000μν)......................................................................65
dB
Distortion (Mono) at 65 dBf (1000μν)
100
Hz.........................................................................................0.25%
1000
Hz.........................................................................................0.15%
6000
Hz.........................................................................................0.35%.
Distortion (Stereo) at 65 dBf (1000μν) —
100
Hz.........................................................................................0.35%
1000
Hz.........................................................................................0.3%
6000
Hz.........................................................................................0.55%
Distortion (Mono and Stereo)
at 50 dB Quieting, 1000
Hz......................................................0.6%
Hum and Noise
at 65 dBf (1000μν)
Mono.........................................................................................73
dB
Frequency Response 30 Hz to 15 kHz
Mono...................................................................+0.2
dB,-1.5 dB
Stereo...................................................................................±1.5
dB
Capture Ratio at 65 dBf
(1000μν)............................................. 1^0 dB.
Alternate Channel
Selectivity.........................................................70
dB
Spurious Response
Rejection.........................................................90
dB
Image Response
Rejection................................................................60
dB
I.F. Rejection
(Balanced)................................................................90dB
A.M.
Suppression...............................................................................50
dB
Stereo Separation
100
Hz.........................................................................................40
dB
1000
Hz.........................................................................................45
dB
10
kHz......................................................................................40
dB
Subcarrier
Rejection.........................................................................60
dB
AM TUNER SECTION:
IHF Usable
Sensitivity...................................................................
15μν
Distortion (THD), 30%
Modulation................................................0.5%
Signal-to-Noise
Ratio.........................................................................50
dB
Alternate Channel Selectivity
..........................................................46 dB
Image
Rejection...................................................................................45
dB
Spurious Response
Rejection.........................................................60
dB
I.F.
Rejection......................................................................................40
dB
GENERAL:
Power
Requirements...................................................
120V AC, 60 Hz
Power Consumption at rated output, both channels
operating...............................................................................................170W
Idling Power (Volume Control at
zero).............................................27W
Dimensions:
Panel Width............................................. 440
mm (17-5/16 inches)
Panel
Height...................................................137
mm (5-3/8 inches)
Depth.............................................................
362 mm (14-1/2 inches)
Weight:
Unit
alone.............................................................
12.5 kg (27.5 lbs.)
Packed for
Shipment.............................................15.0 kg
(33.0 lbs)
40
Service manual
Manual type:
Service manual
Pages:
32
Size:
4.6 MB
Language:
english
Revision:
Manual-ID:
2207855010
Date:
Quality:
Scanned document, all readable.
Upload date:
March 8, 2015
MD5:
8783ae86-5bd5-750c-bd07-db8653d5e812
Downloads:
552