Akai AT 2250 Service Manual

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Akai AT 2250 Service Manual

Extracted text from Akai AT 2250 Service Manual (Ocr-read)


Page 1

AT-2250

- AM-225-0

AKAI STEREO TUNER
AND
AKAI STEREO INTEGRATED AMPLIFIER

MODEL AT-2250 ADI-2250

Page 2

I. TECHNICAL DATA

—_—___—_——____—___——

1. MODEL AT-2250

FM TUNER SECTION

FREQUENCY RANGE 87.5 MHZ to 108 MHz
SENSITIVITY (IHF) 1.9pv

CAPTURE RATIo 1.3 dB

SELECTIVITY (IHF) More than 65 dB

IMAGE REJECTION More than 60 dB (98 MHz)

IF REJECTION

More than 85 dB (98 MHz)

SPURIOUS REJECTION

More than 85 dB (98 MHz)

AM SUPPRESSION 60 dB

SIGNAL TONOISE RATIO 70 dB

HARMONIC DISTORTION MONO Less than 0.1% (100% modulation)
STEREO Less than 0.2% (100% modulation)

STEREO SEPARATION

More than 42 dB (1 kHz)

SUB CARRIER SUPPRESSION

More than 40 dB

OUTPUT VOLTAGE

500 mV (100% modulation)

ANTENNA INPUT IMPEDANCE

AM TUNER SECTION

300 ohms balanced / 75 ohms unbalanced

FREQUENCY RANGE 520 kHz to 1,605 kHz

SENSITIVITY (IHF) lOOuV/ m (Bar Antenna), l7uV (External Antenna)
SELECTIVITY (IHF) More than 30 dB

IMAGE REJECTION More than 50 dB (1 MHZ)

IF REJECTION

More than 40 dB

SIGNAL TO NOISE RATIO

More than 55 dB

OUTPUT VOLTAGE 500 mV (30% modulation)

ANTENNA Built-in Ferrite Bar Antenna
MISCELLANEOUS

SEMICONDUCTORS Transistors: 6, Diodes: 7, FET: 1,1Cs: 3

POWER REQUIREMENT

120V, 60 Hz for USA. and Canada
220V, 50 Hz for Europe except U K.
240V, 50 Hz for U K.

110/220/240V, 50/60 Hz switchable for other countries

DIMENSIONS 380 (W) X 130 (H) x 220 (D) mm
(15 x 5.1x 8.7) inches
WEIGHT 4.7 kg (10.3 lbs)

* For improvement purposes, specifications and design are subject to change without notice.

Page 13

IX. TUNING CORD THREADING

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a APPLY MINUTE AMOUNT OF OIL
TO SHAFT APERTURE
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PAINT LOCK WITH ADHESIVE AGENT /:/ ~ (AVOID GETTING OIL ON THREAD) 0