单 460 mm (18") 电影院超低音音箱系统
JBL 4181 是一款高品质超低音系统，配备采用先进技术的 460 mm (18") 低频换能器，安装于直接辐射式倒相箱体中，在直至最低可听频率的范围内均可实现平滑的频率响应。4181 非常适合用于电影院中模拟或数字声轨的低频补强，也适用于一般扩声应用。
较大的图像
特点
- 连续粉红噪声功率承受能力 500 W，连续节目功率承受能力 1000 W
- 有效频响下探至 26 Hz（-10 dB）；配合外置 EQ，在 34 Hz（-3 dB）以上保持平坦
- 双音圈并联、通风散热式扬声器单元
– 高灵敏度
– 低功率压缩
– 高最大声压级能力
– 低二次及三次谐波失真
– 大振幅承受能力
- 经济高效的电影声轨还原方案，适用于基础型影院
下载
Spec Sheets
| 大小 | |
|
|
832.4 KB |
|
|
855.7 KB |
如果上述任何链接在您的浏览器中显示为奇怪的字符，请右键点击文件以将其保存到您的计算机。
零件与服务
性能
| 额定阻抗 | 8 ohms |
| Minimum Impedance | 5.6 ohms |
| Power Handling Capability | Continuos Pink Noise: 500 W Continuous Program: 1000 W Peak Power: 2000 W |
| Axial Sensitivity | 50 Hz to 500 Hz; 101 dB, 1W @ 1m 40 Hz to 100 Hz; 99 dB, 1W @ 1m |
| Half-Space Reference Efficiency | Single Module: 5%; Two Modules: 10%; Three Modules: 15%; Four Modules: 20% |
| Max. Continuous Acoustical Power Output | Single Module: 25 W; Two Modules: 100 W; Three Modules: 225 W; Four Modules: 400 W |
| Maximum Continuous SPL @ 1 meter | Single Module: 126 dB; Two Modules: 132 dB; Three Modules: 136 dB; Four Modules: 138 dB |
| Maximum Peak SPL @ 1 meter | Single Module: 132 dB; Two Modules: 138 dB; Three Modules: 142 dB; Four Modules: 144 dB |
频率响应 |
Lower Frequency Limits (no EQ): -10 dB: 28 Hz; -3 dB: 40 Hz Lower Frequency Limits (with EQ): -10 dB: 26 Hz; -3 dB: 34 Hz |
| Recommended Crossover Frequencies | High-pass: 20 Hz, 24 dB/octave or greater Low-pass: 80 Hz to 150 Hz, 12 dB/octave or greater |
| 失真 | 2nd harmonic: < 3% 3rd harmonic: < 2% |
| System Polarity | EIA Standard. Positive voltage to RED terminal produces forward cone motion. |
| 输入接口 | Color-coded binding posts |
| Nominal Diameter | 460 mm (18 in) |
| Materials and Finish | 15mm MDF. Extensive bracing on all panels. Vinyl laminated. |
| Enclosure Tuning Frequency | 30 Hz |
| Net Internal Volume | 255 liters (9 cu. ft) |
| 尺寸（高 x 宽 x 厚） | 1100 mm x 640 mm x 450 mm (43.3 in x 25.2 in x 17.75 in) |
| 净重量 | 44 kg (96 lbs.) |
| Shipping Weight (ea) | 50 kg (109 lbs.) |
顾问支持