POWER AMPLIFIERS

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(1) 기능

본 기기는 8채널 앰프로서 QSC PowerLight 기술을 특정 기능들과 결합하여 고정 설치 요건을 충족시켜야 하며 HD15 Data Port 커넥터가 있어 이를 QSControl(컴퓨터 제어 음향장치)와 연결하여 이더넷 망을 통해 앰프를 원격으로 모니터링, 제어를 할 수 있어야 한다. 최상의 음질과 고출력이 요구된 설치 환경에 적합한 기기이어야 하고, 다이렉트 70볼트 기능을 더해 분산 오디오 시스템에 적합하며 AC전원의 험 노이즈를 제거하고 음질을 개선시키면서도 앰프 자체 무게를 줄일 수 있는 PowerLight 전원 공급 기술을 채택한 기기이어야 한다.

(2) 기기특성

- Stereo mode(both channels driven)

8Ω/20Hz~20kHz/0.05% THD	: -

4Ω/20Hz~20kHz/0.1% THD	: -

Midband ratings(all channels driven/single channel)

8Ω/1kHz/0.1% THD	: -

4Ω/1kHz/0.1% THD	: -

70V/20Hz~20kHz/0.2% THD	: 100W

- Bridge mono mode

16Ω/20Hz~20kHz/0.1% THD	: -

8Ω/20Hz~20kHz/0.1% THD	: -

140Ω/20Hz~20kHz/0.2% THD	: 200W

Signal to noise(20Hz~20kHz)	: -100dB

- Input sensitivity	: 1.26Vrms at 70V

- Voltage gain	: 56x(35dB)

Input clipping	: 6Vrms(+18dBu)

- Output circuitry	: Class AB+B

- Frequency response	: 20Hz~20kHz, +0.4dB

8Hz~70kHz, +0/-3dB

- Damping factor	: > 500(5kHz and below)

- Input impedance	: 6k ohms unbalanced,

22k ohms balanced

- Distortion(SMPTE-IM)	: < 0.02%

- Distortion(typical)

20Hz~20kHz:10dB below rated power	: < 0.1% THD

1.0kHz and below: full rated power	: < 0.03% THD

Cooling	: Variable-speed fan/

rear-to-front air flow

through tunnel heat sink

- Connectors

Input	: 3-pin euro-style detachable

terminal blocks(one per channel)

Dataport: HD-15 connector

(Ch1+2, 3+4, 5+6, 7+8)

Output	: Two 8-pin euro-style detachable

terminal blocks

Controls

Front	: AC swith, Ch1, 2, 3, 4, 5, 6, 7&8

gain knobs

Rear	: DIP switch for Ch1~8, clip limiter

on/off, LF filter on/off, LF filter

freq select 33Hz or 75Hz for	CX168 LF filter freq select 50 or

75Hz for CX108V, inputs parallel or

stereo; bridge mode

Indicatiors

Power-on	: Green LED

Parallel inputs	: Orange LED(1per channel pair)

Signal –35dB	: Green LED(1per channel)

Bridged	: Yellow LED(1per channel pair)

Clip	: Red LED(1per channel)

- Amplifier protection	: Full short circuit, open circuit,

thermal, ultrasonic, RF protection.

stable into reactive or mismatched

loads

- Load protection	: On/off muting,

individual channel DC fault blocking

- Dimensions(HxWxD)	: 3.5”(8.9cm) 2RU x 19”(48.3cm)

rack mounting x 14”(35.6cm)

from front mounting rails

- Weight

Net	: 21Ib(9.5kg)

Shipping	: 27Ib(12.3kg)

- Power Requirements	: 100, 120, 230 VAC,

50~60Hz(configured at factory)

120V current consumption	: Idle/0.6A

1/8 power pink noise(typical of program	: 8Ω/-, 4Ω/-, 2Ω/-

material at maximum unclipped power)	70V/6.3A

1/3 power pink noise(typical of program	: 8Ω/-, 4Ω/-, 2Ω/-

material with servere clipping)	70V/9.4A

** CX108V 또는 동등 이상품 이어야 한다.