SONY TA-A300 (01) PDF DOCUMENT

The SONY TA-A300 features:

• High-power output: 60 W + 60 W (4 ohms)

• MC (moving-coil) cartridge selection

• Tape-to-tape recording

The continuous RMS power output for the SONY TA-A300, with both channels driven simultaneously, is as follows:

• at 1 kHz: 90 W + 90 W (5% THD, 4 ohms)

• at 20 Hz – 20 kHz: 60 W + 60 W (0.05% THD, 4 ohms)

• at 40 Hz – 12.5 kHz: 72 W + 72 W (0.05% THD, 4 ohms)

Power bandwidth (IHF): 7 Hz – 40 kHz (4 ohms, 30 watts)

Dynamic headroom: 1.6 dB (’78 IHF)

Harmonic distortion: Less than 0.05% at rated output

Intermodulation (IM) distortion (60 Hz: 7 kHz = 4:1): Less than 0.05% at rated output

PHONO: RIAA equalization curve ±0.5 dB

TUNER, CD, VIDEO/AUX, TAPE1, TAPE2/DAT: 7 Hz – 100 kHz ±3 dB

*’78 IHF

Tone Controls:

Loudness (Attenuation 30 dB):

+6 dB (100 Hz)

+2 dB (10 kHz)

Muting: -20 dB

Preamplifier: Low-noise, high-gain equalizer amplifier

Power amplifier: Pure-complementary SEPP OCL power amplifier with all stages directly coupled

Power requirements:

• G-AEP, AEP model: 220 V AC (or 240 V AC adjustable by authorized Sony personnel), 50/60 Hz

• UK model: 240 V AC (or 220 V AC adjustable by authorized Sony personnel), 50/60 Hz

Power consumption:

• G-AEP, AEP model: 135 W

• UK model: 290 W

• G-AEP, AEP model: 3 switched total 100 watts max.

• UK model: 1 switched 100 watts max.

Dimensions:

• G-AEP, AEP model: Approx. 430 x 130 x 360 mm (w/h/d) (17 x 5 1/8 x 14 1/4 inches)

• UK model: Approx. 430 x 130 x 350 mm (w/h/d) (17 x 5 1/8 x 13 7/8 inches)

Weight: Approx. 8.3 kg (18 lb 5 oz)

SPEAKERS selector: Select speaker system A or B, or both. Set to OFF when using only headphones.

POWER switch: Turns the unit on or off.

HEADPHONES jack: For connecting stereo headphones.

BALANCE control: Adjusts the sound balance between the left and right channels.

TONE switch and controls: Used to adjust bass and treble frequencies.

MUTING switch: Depress to decrease the sound level temporarily. Press again to restore the previous sound level.

VOLUME control: Adjusts the overall sound level.

CARTRIDGE selector: Select according to the cartridge type of your turntable system. Use MC (depressed) for a moving-coil cartridge and MM (released) for a moving-magnet cartridge.

LOUDNESS switch: Depress to reinforce bass or treble, especially when listening at a low volume. To disengage the switch, press it again.

The INPUT SELECTORS are used to select the desired program source for listening.

INPUT jacks (phono):

• PHONO: Connect a turntable system.

• TUNER: Connect a tuner.

• CD: Connect a compact disc player.

• VIDEO/AUX: Connect to the audio output jacks of a VTR or other audio equipment.

(phono ground) terminal: To prevent hum, be sure to connect the ground wire of the turntable system.

TAPE 2/DAT & TAPE 1 input/output jacks (phono): Connect to the input and output jacks of a tape recorder. Connect the REC OUT jacks to the LINE IN jacks of your recorder, and the TAPE jacks to the LINE OUT jacks of your recorder.

SWITCHED AC OUTLETS: Use these to power other audio units whose power consumption is less than 100 watts. These outlets are controlled by the POWER switch. Caution: Do not connect any home electrical appliances or other high-wattage equipment to these AC outlets.

SPEAKERS A, B terminals: Connect your speaker wires here.

If there is no audio, please perform the following checks:

• Check power cord connection.

• Check speaker and program source connections.

• Check SPEAKERS selector setting.

• Check INPUT SELECTOR.

• Adjust VOLUME control.

If you experience no audio from one channel or an unbalanced volume, try the following:

• Adjust BALANCE control.

• Check speaker and input connections of the inoperative channel.

If you experience an abrupt loss of sound from both speakers, turn off the amplifier. Then, check the speaker terminals and connecting cords for a short circuit.

If you notice a lack of bass or that the instrument positions sound obscure, check the speaker +/- connections for proper phasing.

To address severe hum or noise, please try these steps:

• Check if a TV or VTR is too close to the audio system.

• Move connecting cords away from transformers, motors, or fluorescent lights.

• Ground the turntable system.

• Fully insert all connecting cord plugs.

• Disconnect the turntable ground wire when using an MM cartridge with a ground piece.

• Wipe plugs and jacks with a cloth lightly moistened with methanol.

NOTE: This is a technical procedure from the service manual. Adjustments should be performed 10 minutes after the POWER switch is turned on.

Setting:

• AUDIO SOURCE selector: TUNER

• Input Signal: No signal input

Procedure:

Adjust RV501 (L-CH) and RV601 (R-CH) so as to obtain 3mV at CNB5 (L-CH) and CNB6 (R-CH) respectively, using a digital volt-ohm meter (VOM) on the DC V range.

COMPONENTS IDENTIFIED BY SHADING AND MARK ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.