LF-4215 产品规格 ( 如有改变恕不另行通告 )

 

 

频率范围:

38 - 1300 赫兹 ( ± 3 dB)

 

 

 

30 - 1400 赫兹可用范围 (-10 dB)

 

 

标称覆盖范围:

600 赫兹时 100°水平 X 55°垂直

 

 

最大输出:

134.5 dB SPL 计算峰值、1 米、半间距、在额定 rms 功率 6dB 振幅因子粉红噪声输入,25 - 250 赫兹。

 

128.5 dBA SPL 计算最大连续,1 米。通常使用 dBA 尺以确定会造成永久听力损失的声源。

阻抗:

标称 4 欧姆

 

 

 

最小 3.4 欧姆,150 赫兹

 

 

 

最大 25 欧姆,22 赫兹

 

 

最大输入功率:

800 瓦 rms (6dB 振幅因子粉红噪声的 100 小时, 30

- 500 赫兹 )

 

1000 瓦 rms (6dB 振幅因子粉红噪声 2 小时, 30 -

500 赫兹, AES 方法 )

 

推荐放大器功率 - 1600 瓦 rms 最大到 4 欧姆 ( 每 LF-4218)

灵敏度:

99.5 dB 半间距, 93.5 dB 全间距, 35 - 1000

赫兹, 1 瓦, 1 米

推荐处理:

次音速过滤低于 30 赫兹,每八度音程大于 18

dB 最大推荐分频频率为 1000 赫兹。从

 

www.qscaudio.com 网站可获得 QSC DSP 的配置情况。如有要求即可获得替换处理硬件的参数

连接器:

阻挡带螺旋式终端接受高达 #10 AWG 绞合式布线。四个终端 ( 两个输入和两个并行输出 )。驱动器

 

以并联形式内部连接。独立连接变频器的时候,拿掉终端杯内部边上的蓝色跳线电线和黄色跳线

 

电线,然后相应标记机罩。

 

 

变频器:

两个 15” (381 毫米 ) 高效低频变频器通风式 4” (100 毫米 ) Kapton? 线圈架上的铜音圈。高偏

 

移 / 低失真设计,带超高功率处理,以及低温和端口压缩。

机罩:

类似的 B4 对齐,端口机罩带全喇叭形端口,低紊乱对称端口设计,调整为 36 赫兹,由中密度纤

 

维板和重型支撑构成。 具有防破坏低音喇叭安装螺丝的特点。

尺寸:

30”(宽)X 35”(高)X 20”(深)(762 mm X 889 mm X 508 mm)

重量:

195 磅 (运输),172 磅 (净重)(88/78 公斤 )

 

 

SPL 和阻抗 vs. 频率

 

 

 

SPL 2pi

 

 

SPL(dB)

SPL 4pi

 

(欧姆)

 

 

 

 

 

阻抗

 

阻抗

 

 

 

频率 (赫兹)

 

 

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Image 19
Polaroid LF-4215 user manual DBA SPL 计算最大连续,1 米。通常使用 dBA 尺以确定会造成永久听力损失的声源。

LF-4215 specifications

The Polaroid LF-4215 is a remarkable addition to the world of instant photography, designed to bring nostalgia and modern appeal together. Aimed at both amateur photographers and seasoned professionals, this camera offers a unique blend of features that makes it stand out in today’s fast-paced digital landscape.

At the heart of the LF-4215 is its robust imaging technology, which combines a high-resolution lens with a powerful image sensor. This allows for vibrant, detailed photos with the characteristic Polaroid aesthetic. The camera uses a unique film format that delivers rich colors and striking contrasts, reminiscent of the iconic Polaroid prints from the past. The LF-4215 employs a special blend of analog and digital technologies, allowing photographers to enjoy the charm of instant film without sacrificing image quality.

One of the standout features of the LF-4215 is its easy-to-use interface. With a simple control layout, users can swiftly navigate settings such as exposure, ISO, and focus. The camera also includes several pre-set shooting modes tailored for different environments, whether you’re capturing a sunny outdoor scene or a low-light setting. This flexibility invites creativity, enabling photographers to experiment with various styles and techniques.

Moreover, the LF-4215 comes equipped with a built-in flash, which ensures that your images are well-lit in any situation. The camera's viewfinder offers a bright and clear framing experience, making it easier for users to compose their shots accurately. Additionally, the LF-4215 supports multiple exposure settings, allowing for unique artistic expressions and double exposures.

Another significant characteristic of the LF-4215 includes its compact and lightweight design, making it an ideal companion for on-the-go photography. Coupled with a durable exterior, this camera is built to withstand the rigors of outdoor adventures, ensuring that users can capture memorable moments without worry.

In conclusion, the Polaroid LF-4215 is a beacon of instant photography, merging classic charm with modern technology. Its impressive features, user-friendly design, and premium imaging capabilities make it a fantastic choice for anyone looking to experience the magic of instant captures. Whether you’re documenting life’s little moments or indulging in creative photography, the LF-4215 is sure to deliver satisfying results that you'll cherish for years to come.