3 kanalų galios stiprintuvas A 31

Parasound
4699 
  • 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms
  • Adjustable gain for up to +6db over THX Reference level
  • Unbalanced RCA and balanced XLR inputs
  • Circuitry designed by legendary John Curl
  • High bias class A/AB operation
  • Direct coupled (no capacitors or inductors in signal path)
  • Complementary MOSFET driver stage and JFET input stage
  • 24 beta-matched 15 amp, 60 MHz bipolar output transistors
  • 1.5 kVA encapsulated toroid power transformer with independent secondary windings for each channel
  • 98,400 µF power supply filter capacitance
  • DC Servo and relay protection circuits
  • AC present, channel status, high temperature indicators
  • Heavy-duty 24k gold-plated 5-way speaker terminals
  • THX Ultra2 certified
  • Auto turn-on by 12v trigger or audio signal

Techninė specifikacija:

Continuous power output
250 watts RMS x 3, 20 Hz - 20 kHz, 8 Ω, all channels driven; 400 watts RMS x 3, 20 Hz - 20 kHz, 4 Ω, all channels driven

Current capacity
60 amperes peak per channel

Power bandwidth
5 Hz - 100 kHz, +0/-3 dB at 1 watt

Total harmonic distortion
< 0.2 % at full power

IM distortion
balanced 16 V rms < 0.04 %

Slew rate
> 130 V/µsecond

Dynamic headroom
> 1.5 dB

Interchannel crosstalk
> 78 dB at 1 kHz; > 63 dB at 20 kHz

Input sensitivity
1 V for 28.28 V (THX Reference)

Input impedance
47 k Ω unbalanced; 94 k Ω balanced

S/N ratio
112 dB, input shorted, IHF A-weighted

Damping factor
> 1100 at 20 Hz

Dimensions
17-1/2" w x 7-5/8" h x 20" d, 7" h without feet

Net weight
65 lb

3 kanalų galios stiprintuvas A 31

Parasound
4699