JBL Professional 4645C

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4645C Single 460 mm (18 in.) Subwoofer System

The JBL Model 4645C is a high quality subwoofer system, featuring an advanced technology 460 mm (18 in), low frequency transducer mounted in a direct radiator, bass-reflex enclosure for smooth response to the lowest audible frequencies. The 4645C is ideal for low-frequency augmentation of either analog or digital soundtracks in motion picture theaters and for general sound reinforcement applications.

特点

800 Watts Continuous Pink Noise, 1600 Watts Continuous Program Power Handling
Usable response to 22 Hz (-10 dB, no EQ), flat to 22 Hz (-3 dB) with External EQ
2242H SVGTM Super Vented Gap Cooled Driver – High Sensitivity – Minimal Power Compression – Highest Maximum-SPL Capability – Extremely Low 2nd and 3rd – Harmonic Distortion – Symmetrical Field Geometry SFGTM – Magnet Structure – Extended Excursion Capability
Approved by Lucasfilm, Ltd. for THX® installations

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Specifications

	大小	上传日期
4645c Spec Sheet 更新: 10月 2020	155.8 KB	10月 2020

Compliances

	大小	上传日期
4000 Series Declaration of Conformity 更新: 10月 2020	33.4 KB	10月 2020
Cinema Sound - 4000 Series Declaration of Conformity 更新: 10月 2019	144.3 KB	10月 2019

Tech Notes

	大小	上传日期
Tech Note: Polarity Conventions 更新: 10月 2019	55.0 KB	10月 2019

Information documents

	大小	上传日期
Cinema CD 更新: 10月 2019	21.9 MB	10月 2019

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零件与服务

性能

频率响应(±3 dB)	22 Hz - 100 Hz
频率范围 (-10dB)	20 Hz - 500 Hz
额定阻抗	8 ohms
Minimum Impedance	7.2 ohms
Power Handling Capability	-
Continuous Pink Noise	800 watts
Continuous Program	1600 watts
Peak Power	3200 watts
OUTPUT CAPABILITY	-
Axial Sensitivity	50 Hz to 500 Hz; 99 dB, 1W @ 1m 40 Hz to 100 Hz; 97 dB, 1W @ 1m
Power Compression	-
At -10 dB power (80 W)	0.6 dB
At -3 dB power (400 W)	2.0 dB
At rated power (800 W)	3.3 dB
Net Weight (each)	138 lbs (63 kg)
尺寸（高 x 宽 x 厚）	1010 mm x 674 mm x 450 mm 39¾ in x 26½ in x 17¾ in
Power Handling (2Hr AES Rating)	800 W
灵敏度	97 dB
Maximum SPL (1m)	128 dB
标称阻抗	8Ω