AMPLIFIER 255S




Scott Amplifier model 255S - 1973-75
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SCOTT 255S  

SCOTT 255S  



SCOTT 255S  


TECHNICAL SPECIFICATIONS



Power output:

Total Music Power (IHF) 90 watts at 8 ohms
Continuous Power (RMS) 30 watts at 8 ohms per channel
Continuous Power (RMS) 40 watts at 4 ohms per channel

Distortion:

Harmonic: less than 0,5% at rated output
Intermodulation (IM) 20 Hz to 25 Khz +/-
Power Bandwidth (IHF) 15 Hz to 35 Khz

Input Sensitivity and Impedance:

Phono 1 - Phono 2: 2,5 mV 100/50 Kohms
Tuner: 120 mV 25 Kohms
Aux 1 / Aux 2: 120 mV 25 Kohms
Tape In: 120 mV 25 Kohms
Main Amp. Input: 850 mV 35 Kohms

Signal to Noise Ratio:

Phono 1 - Phono 2: 65 dB
Tuner, Aux 1 / Aux 2. Tape In: 75 dB
Damping Factor: 30 at 8 ohms
Output Impedance: 4 - 16 ohms (8 ohms nominal)

Tone Controls:

High Filter: 9 dB at 10 Khz
Low Filter: 9 dB at 50 Khz
Muting: 20 dB at 1 khz
Bass Control: + 12 dB to - 10 dB at 50 Hz
Treeble Control: + 12 dB to - 15 dB at 10 KHz
Phono Overload: over 100 mV
Dimensions (W x D x H): 413 x 222 x 124 mm
Weight: 6 Kg











Scott top quality


H H Scott




Transistors Equivalents Other Transistors Equivalents Other
BD183 2N3055-BDX93 NTE284 2SC497 BD139-BSW66A BC639-NTE128
2SC828 BC547 BC639 2SA564 BC640-BC418B BC177A
2SC644 BC549-BC184L 2N3702 2SC1567 BD139 NTE373
2SC1509 BD139 NTE297 2SA794 BD140 2N5415S
2SC1667 2N3055-BD183 NTE284 2SC1567 BD139-2N5100 NTE373


Electrolytic Capacitors (35)



Capacitors Tension Quantity Capacitors Tension Quantity
4700 µf 50 volts 2 2200 µf 50 volts 1
220 µf 6.3 volts 4 100 µf 35 volts 2
100 µf 15 volts 1 100 µf 6.3 volts 3
47 µf 35 volts 2 33 µf 10 volts 2
10 µf 25 volts 12 1 µf 50 volts 6






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