CEILING SPEAKER

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(1) 기능

본 기기는 4.5인치 2웨이 천장형 스피커로 일정한 출력의 평탄한 음을 재생 가능하게 하는 DMT™기능이 있어야 하며, 하이임피던스 용 트랜스포머가 장착되어 16옴 뿐 아니라 70V 및 100V로 변환하여 전관방송에도 적합한 기기이어야 한다.

(2) 기기특성

- LF transducer	: 114mm[4.5in] weather treated

paper cone woofer

- HF transducer	: 19mm[.75in] aluminum dome

tweeter

- Effective frequency range	: 70Hz~20kHz

- Rated noise power/voltage	: 30watts/22volts (rms)

- Sensitivity[dB]	: 87

- Rated coverage(‐6dB)	: 150° conical DMT

- Directivity factor	: 4.5

- Directivity index[dB]	: 6.5

- Maximum continuous SPL[dB]	: 102

- Maximum peak SPL[dB]	: 108

- Nominal impedance[ohms]	: 16

- Recommended amplifier	: 60watts

- Transformer taps/impedance	: 16Ω(in bypass setting)

3.75W(70V); 7.5W(100V)

Tap; 1,333Ω

7.5W(70V); 15W(100V) Tap; 667Ω

15W(70V); 30W(100V) Tap; 333Ω

30W(70V); N/A(100V) Tap; 167Ω

- Input connector type	: Euroblock connector with parallel

output

- Enclosure material	: ABS baffle on powder coated steel

back can

- Grille material	: Powder coated steel

- Ingress protection	: IP-34

- Operating environment	: Designed for indoor use

- Operating temperature range	: -20 to 50 °C [-4 to 122 °F]

- Cutout dimension	: Φ245mm[Φ9.65in]

- Net weight	: 3kg[6.6lb]

- Product dimensions(Diameter x Height)	: Φ280 x 100 mm

[Φ11.02 x 3.93 in.]

- Shipping weight	: 10.2kg[22.5lb] (pair packed)

- Shipping dimensions(H x W x D)	: 183 x 699 x 394mm

[7.2 x 27.5 x 15.5 in]

(pair packed)

** AD-C4T-LP 또는 동등 이상품 이어야 한다.