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Model: Stereo Amplifier A48 - Sugden, J.E., Heckmondwike,
Dimensions (WHD)
15.5 x 5 x 9 inch / 394 x 127 x 229 mm
Notes
A stereo hi-fi integrated amplifier with power output of 40 watts RMS per channel into 8 ohms. DIN inputs for Disc (MM cartridge), Aux, Radio, DIN Input/Output for Tape, terminals for one pair of loudspeakers, voltage selector and Bulgin mains outlet. Bass and Treble tone controls, ten push buttons for input selection, filters, Quiet (loudness) and Left/Right/Mono. Jack for headphones.

SPECIFICATION (all levels quoted 1 dB)
Power output: 40 WRMS per channel both channels driven at clipping level into 8 loads.
THD less than 0.1%, mainly 2nd & 3rd harmonic, negligible proportion of high order harmonics and reducing in proportion with reducing power.
Frequency and power response 1 dB, 30 Hz to 20 kHz
Output to tape recorder direct connection from radio and aux. inputs, 200 mV from disc amplifier when correctly loaded at average modulation.
Input sensitivity:
(25 W level 8 )
Radio, Tape, Aux 100 mV into 200 k flat response
Magnetic Cartridge 2.5 mV into 47 k, equalized to R.I.A.A.
Signal to noise ratio:
(30 phon weighting) 70 dB on disc inputs.
Interchannel crosstalk typically 40 dB, 20 Hz - 10 kHz, dependant upon input load impedance.
Rumble filter Built in on disc input, 12 dB per octave below 30 Hz.
Push buttons to select:
Inputs DISC, RADIO, AUXILIARY, TAPE.
L.F. filter 18 dB per octave below 70 Hz.
H.F. filter turnover 4 7 or 10 kHz, slope 6 or 18 dB/octave.
Function Mono, Stereo, Input Right, Input Left.
Power consumption 140 W maximum.
Net weight (2.2 lb = 1 kg)
24 lb (24 lb 0 oz) / 10.896 kg

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