Aiwa MX 70 TX 70 FX 70 Service Manual

Page 2

H,HU
MX-70, TX-70 E,G

SPECIFICATIONS = MX-70

Stereo Integrated amplifier
8 ICs, 26 transistors,
40 drodes,13 LEDs

H, HU, E mode)
AC 120/220/240V
switchable, 50/60 Hz

G model
AC 240V, 50/60 Hz
H, HU model
65W
E, G model
160W
330(W) x 71(H) x 200(D) mm
(12-7/8" x 2-5/8x 7 7/8")
3.65 kg (8.04lbs.)

Type:
Semiconductors:

Power source:

Power consumption:

Dimensions:

Weight:

< Power amplifier >
Effective output power: H,HU models

45W + 45W (89, EIAJ 5%

lkHz)
E, G model
30W + 30W (851,T.H.D.0.05%,
40 HZ ~ 20 kHz)
< FTC Rule >
35 Watts per channel, Min.
RMS at 8 ohms, from 30 Hz
~ 20 kHz, with no more than
0.2% Total Harmonic Distortion.
Less than 0.03% (lkHz, 30W)
30 Hz to 50,000 Hz (Less than 0.5%)
[Both channels driven, 8 n]

40 Hz to 70,000 Hz ligSdB)

Total harmonic distortion:
Output bandwidth:

Frequency response:

SPECIFICATIONS =TX-70

< GENERAL >
Semiconductors: H, HU models
8 le, 5 FETs, 21 transistors,
38 diodes, 9 LE Ds,
E model
8 ICs, 5 FETs, 26 translators,
35 diodes, 9 LEDs
(5 model
8 le, 5 FETs, 20 transistors,
37 diodes. 9 LEDs
H,HU,E models
AC 120V/220 ~ 240V
Switchable, 50/60 Hz
G model
AC 240V, 50/60 Hz
10W

Power source:

Power consumption:

Dimensions: 330(W) x 71 (H) x 200(0) mm
(13" x 2-3/ " x 7-7/8")
Weight: 2.1 kg (4.63 lbs.)

< FM TUNER SECTION >
Frequency ranges: 87.5 ~ 108.0 MHz
Intermediate frequency: 107 MHz
IHF sensitivity: 8 t 2 dB (at 87.5, 98.0,1080 MHz)
(THD 3%)
50 dB quieting sensitivity: Less than 40 dB (at 98.0 MHZ)
Image frequency interference ratio:

More than 60 dB (at 98.0 MHz)
Intermediate frequency interference ratio:

More than 80 dB (at 98.0 MHz)

SN ratio: (MONO)
(Weighted) More than 70 dB (98.0 MHz)
(STEP) E0)

More than 63 dB (98.0 MHz)
Total harmonic distortion: (MONO)
(Input level 60 (13) Less than 0.3% (at 98.0 MHz)
(STEREO)
Less than 0.4% (at 98.0 MHI)
More than 48 dB (at 98.0 :18)

AM suppression ratio:
30 t 10 dB (at 98.0 MHZ)

Muting response:

Less than AUX 2mV
Less than 40

Residual noise
Damping factor:
(1 kHz 8 P.)

< Preamplifier >
Signal to noise ratio:
(Weighted)

PHONO (MM) More than 79 dB
TUNER, AUX More than 87 dB
TAPE More than 87 dB
(IHF A curve, short circuit)

Tone controls: BASS 100 Hz -10.0 t 1.2 dB
+11.7 : 1.2 dB
TREBLE 10 kHI -8.0 e 1.0 dB
+7.4 t (.2 dB
D.S.L: 50 Hz +165 dB i 2 dB

$0.7 dB (20 Hz to 20,000 Hz)

Channel separation: More than 40 dB

lnputjacks: PHONO (MM) 3 mV/47 kn
(Sensitivitv/ TUNER 15C) mV/47 kn
input impedance): TAPE I50 mV/47 kn
MIC I mV/S kn
Outputjacks: TAPE 150 mV/47 kn
(Level/output impedance): HEADPHONES I mV/IW, 8 a
SPEAKERS 8 X7.

0 The specifications and external appearance of this set are subject
to change without prior notioe.

Effective selectivity: More than 60 dB (at 98.0 MHz)

(at 400 Hz)
Capture ratio: Less than 2.5 dB (at 98.0 MHZ)
30 Hz ~15 kHz (o :deI
More than 35 dB (at 1 kHz)

Less than 30 :13 dB (at 98.0 MHZ)

Frequency response:
Separation:

Auto stop level:

< AM TUNER SECTION >

Frequency ranges: MW (AM) 522' ~ 1611 kHz
LW 144 ~ 353 kHz
(E model only)
Intermediate frequency: 450 kHz
Sensitivity: MW (AM) Less than 57 dB
(S/N 20 dB, bar antenna) (at 603 kHz)
Less than 55 dB (at 999,
1404 kHz)
LW Less than 65 dB

(at155, 200, 290 kHz)
(E model only)
Image frequency interference ratio:

MW (AM) More than 40 dB
(at 999 kHz)
LW More than 45 dB

(at 200 kHz) (E model only)
Intermediate frequency interference ratio:

MW (AM) More than 30 dB
(at 999 kHz)

Selectivity: MW (AM) More than 40 d8
(:9 kHz) (at 999 kHz)

Total harmonic distortion: MW (AM) Less than 1.0% (at 999 kHz)

AGC characteristic: MW (AM) 52 1 10 dB (at 999 kHz)
SN ratio: MW (AM) More than 48 dB
(74 dB input)
Auto stop level: MW (AM) 60 z 10 dB
LW 72 I 8 dB (E model only)

o Specifications and external appearance are subject to change
without due to product inprvement,