QSC AC-S4T-BK ลำโพงติดผนัง 4 นิ้ว เป็นลำโพงสองทาง สำหรับระบบประกาศ เปิด Background Music
5,000฿
QSC AC-S4T-BK ลำโพงติดผนัง 4 นิ้ว แบบ 2 ทาง สำหรับเสียงพูดและเปิด background music ให้เสียงที่มีคุณภาพครอบคลุมทั่วพื้นที่ มีมุมกระจายเสียงทรงกรวย 130 องศา ติดตั้งได้ทั้งแนวตั้งและแนวนอน
| Specifications | AC-S4T |
| Effective frequency range1 | 70 Hz–20 kHz |
| Rated noise power / voltage2 | 16 watts / 11.3 volts rms |
| Broad-band sensitivity3 | 85 dB SPL |
| Coverage angle (-6 dB) | 130° conical (500 Hz–5 kHz) |
| Directivity factor (Q) | 6 |
| Directivity Index | 8 dB |
| Maximum continuous SPL4 | 97 dB |
| Maximum peak SPL4 | 103 dB |
| Rated impedance | 8 ohms |
| Recommended amplifier power | 32 watts into 8 ohms |
| Transformer taps | 70V: 16, 8, 4, 2, 1 watts |
| 100V: 16, 8, 4, 2 watts | |
| 8 ohm bypass | |
| LF transducer | 114 mm (4.5-inch) Polypropylene woofer with 25 mm (1-inch) voice coil |
| HF transducer | 25 mm (1-inch) Aluminium dome tweeter with 25 mm (1-inch) voice coil |
| Input connector type | Euroblock connector with parallel output |
| Enclosure material | UV treated, high impact ABS polymer |
| Grille material | Powder coated steel |
| Yoke material | Powder coated steel with brass inserts |
| Enclosure Details | |
| IP-44 | |
| Ingress protection | Designed for indoor use |
| Operating environment | -20 to 50° C (-4 to 122° F) |
| Operating Temperature Range | |
| Product Dimensions (HWD) inches | 9.1 x 6.3 x 5.9 |
| Product Dimensions (HWD) mm | 230 × 160 × 150 |
| Net Weight | 5.3 lb / 2.4 kg |
| Shipping weight | 5.3 kg (11.8 lb) |
| pair packed | |
| Shipping Dimensions (HWD) inches | 11.5 × 8.1 × 14.5 |
| pair packed | |
| Shipping Dimensions (HWD) mm | 292 x 206 x 368 |
| pair packed | |
| Included accessories | Yoke mount system, euroblock connector |
(1) Free-field, -10 dB from on-axis sensitivity
(2) IEC60268-1 noise signal for 2 hours
(3) On-Axis, free-field sensitivity, 2.83V, 1 m
(4) Calculated from rated noise voltage and sensitivity
