Усилитель мощности Parasound A21+ silver - серии Halo, 2х300Вт, черный

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579990 руб.

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Changes from the original A 21→A 21+ 250 → 300 Watts (8Ω) 400 → 500 Watts (4Ω) 750 → 1000 Watts (bridged) Filter cap: 88,000 uF → 108,000 uF S/N:...

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Описание
Характеристики

Changes from the original A 21→A 21+

250 → 300 Watts (8Ω)
400 → 500 Watts (4Ω)
750 → 1000 Watts (bridged)
Filter cap: 88,000 uF → 108,000 uF
S/N: 112dB → 115 dB
THD (at full power): 0.2% → 0.1%
Crosstalk (20kHz): 63dB → 70dB
Transformer size: 1.2 kVA → 1.3 kVA
Weight: 60 LB → 71 LB
Refined Halo cosmetic with aluminum end caps & gold highlights
Updated rear panel with heavy duty speaker terminals from JC 5
Upgraded internal gold on gold audio connections
Updated auto turn on circuit

All Features

300 watts x 2 @ 8 Ω RMS, both channels driven
500 watts x 2 @ 4 Ω RMS, both channels driven
1000 watts x 1 @ 8 Ω, in bridged mode
Circuitry designed by legendary John Curl
High bias Class A/AB operation
60 amperes peak current per channel
Stable with speaker impedance dips to 1.5 Ω
Balanced inputs with discrete circuits
CHK Infinium, custom 5-way speaker binding posts
Gold-plated RCA input & loop output jacks
Direct-coupled signal path, no capacitors or inductors
DC Servo and relay protection circuits
AC turn-on inrush surge protection with relay bypass
JFET input stage, MOSFET driver stage
16 beta-matched 15 ampere, 60 MHz bipolar output transistors
1.3 kVA shielded toroid transformer w/ independent windings for each channel
Independent power supplies for input stage, driver stage and output stage
108,000 µF filter capacitors for output stages
Full power is rated all the way down to 5Hz for unrestricted low-end bass
Harris hyper-fast soft-recovery bridge diode rectifiers
Automatic turn-on by 12 V trigger or audio sensing
4 rack space chassis with rear carry handles
Rack mount hardware is included
Available in silver or black

Power Output – Stereo Mode (0.1% THD)
300 watts x 2, 8 Ω both channels driven
500 watts x 2, 4 Ω both channels driven

Power Output – Bridged Mode (0.1% THD)
1000 watts x 1, 8 Ω
Bridged 4 Ω operation is not recommended

Power measurement are at 120 VAC:
0.1% THD, RMS continuous power,
full audio band (20 Hz - 20 kHz)

Current Capacity
60 amps peak, per channel

Slew Rate
> 130 volts per microsecond

Frequency Response
5 Hz - 100 kHz, +0/-3 dB
20 Hz - 20 kHz, +0/-0.25 dB

Total Harmonic Distortion (THD)
< 0.1 % at full power
< 0.03 % at typical listening levels

IM Distortion
< 0.04 %

TIM
Unmeasurable

Inter-channel Crosstalk
> 80 dB at 1 kHz
> 70 dB at 20 kHz

Input Impedance
Unbalanced: 33 kΩ
Balanced: 66 kΩ,(33 kΩ per leg)

Total Gain
29 dB

Input Sensitivity for 28.28 V Output into 8 Ω
Unbalanced: 1 V
Balanced: 1 V per leg

S/N Ratio
> 115 dB, input shorted, IHF A-weighted
> 110 dB, input shorted, unweighted

Damping Factor
> 1100 at 20 Hz

DC Trigger Requirements
+9 Vdc to +12 Vdc, 5 mA

Audio Trigger Requirements
2 mV - 10 mV

XLR Pin Identification
1 = Ground (Shield)
2 = Positive
3 = Negative (Return)

Dimensions
Width: 17-5/8" (448 mm)
Height without feet: 7-1/8" (181 mm)
Height with feet: 7-3/4" " (197 mm)
Depth: 20" (508 mm)
Depth with cables: 21-1/2" (546 mm)

Net Weight
71 lb. (32.2 kg)

Shipping Weight
88 lb. (39.9 kg)

Power Requirement
Standby: 1 Watt
Idle (no music playing): 160 Watts
Typical Listening levels: 300 Watts
Maximum: 1400 Watts