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THRESHOLD SA 4

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Technic details

Specifications

Type:
Stereo Power Amplifier
Rated output:
100W + 100W (8Ω, 20Hz to 20kHz, continuous)
200W + 200W (Peak)
Input impedance:
50kΩ (Unbalance)
600Ω (Balance)
Distortion:
0.1% (At rated output)
Frequency characteristics:
DC to 100kHz, -3dB
S / N ratio:
100dB (Unweighted)
Slew rate:
50V / μs
Gain:
+26.6dB
Output stage:
250W, 200V, 20A
Output transistors:
28 pieces / channel
Output impedance:
Less than 0.1Ω (20Hz to 20kHz)
Current supply capacity:
20A (Continuous)
150A (Peak)
Protection mechanism:
Natural air-cooling
Automatic shutdown by internal temperature detection during heating
Power supply:
1400W (Toroidal transformer)
186,000μF (Filter capacitors)
Power consumption:
400W
External dimensions (W x H x D):
483 x 222 x 603mm
Weight:
Approx. 44kg
Year:
1989

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