3677 Cinema Loudspeaker System

Professional Series

Application:

Small room, cinema sound systems

Key Features:

cFrequency Range: 40 Hz to 20 kHz (–10 dB)

cSensitivity: 99 dB

cPower Capacity: 250 watts

cLow frequency transducer: One 380 mm (15 in.) low frequency driver

cHigh frequency transducer: 25 mm (1 in.) horn throat diameter,

44 mm (1.75 in.) pure titanium diaphragm compression driver

c908 X 408 Flat-Front Bi-Radial®horn

cNewly designed passive network with driver protection circuit

cAll in one enclosure for simple installation

cShallow profile cabinet minimizes behind-screen space requirements

The JBL 3677 cinema loudspeaker system provides natural sound quali- ty for music and dialog in small cine- ma applications. The convenient all- in-one enclosure requires no field assembly, simplifies set-up, and reduces labor costs. Enclosure design is extremely shallow in depth (292 mm; 11.5 inches), to minimize the space required behind the screen.

The high-frequency section consists of the JBL 2416-1 pure titanium com- pression driver and 2373 Flat-Front Bi-Radial®horn. The titanium diaphragm of the 2416-1 ensures nat- ural sound and reliability, mandatory in today’s motion picture theatres. The 2373 horn provides smooth, even coverage throughout the auditorium.

The low frequency driver is the JBL 2035H, which provides an exceptional match for system power handling and frequency response in the crossover region.

The newly-designed passive crossover network is optimized to provide a seamless transition between driver components, for clear, articulate dialog, and high fidelity music reproduction. A protection circuit ensures that all compo- nents operate within their optimal power handling range, to ensure many years of high reliability performance.

System Specifications:

Frequency range (–10 dB): 40 Hz to 20 kHz

Frequency response (± 3 dB): 45 Hz to 12 kHz

Power capacity1 (system): 250 W continuous pink noise

Sensitivity: 99 dB (1W, 1m)

Nominal impedance: 8 ohms

Crossover frequency: 1.2 kHz

Nominal coverage: 908 horizontal, 408 vertical

Half-space reference efficiency: 3.2%

Maximum acoustic power output

(sine wave input) 7 acoustic watts

System Polarity: Positive voltage to RED produces forward cone motion

Input connectors: Barrier strip, screw terminals

Net system weight: 39 kg (85 lbs)

Shipping weight: 42 kg (93 lbs)

Dimensions (H x W x D): 765 x 651 x 292 mm 30.125 x 25.625 x 11.5 inches

1Rating based on test signal of continuous pink noise, per IEC spectrum for two hours duration.

JBL continually engages in research related to product improvement. New materials, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated.

PRELIMINARY

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3Com 3677 specifications Application, Key Features, System Specifications

3677 specifications

The 3Com 3677 is a versatile network switch designed to meet the demands of enterprise networking environments. Known for its reliability and performance, the 3677 is an essential component for businesses seeking to enhance their network infrastructure. One of its standout features is its support for Layer 2 and Layer 3 switching capabilities, allowing for efficient data routing and management. This flexibility enables seamless integration into various network topologies.

Equipped with multiple Ethernet ports, the 3Com 3677 supports various speeds, including 10/100 Mbps and Gigabit Ethernet, ensuring compatibility with a range of devices. The switch is engineered to provide high availability and resilience, featuring capabilities such as link aggregation and Spanning Tree Protocol (STP). These technologies minimize downtime and improve overall network reliability, which is crucial for mission-critical applications.

Security is a top priority in today’s networking landscape, and the 3Com 3677 addresses this concern with advanced security features. It supports Virtual LANs (VLANs) for network segmentation, ensuring that sensitive data is kept secure and segregated. Additionally, the switch incorporates features like port security and access control lists (ACLs), which help to mitigate unauthorized access and protect the network from potential threats.

Performance-wise, the 3Com 3677 is optimized for low latency and high throughput, making it ideal for environments with heavy data traffic. The switch is also designed for easy management, with support for Simple Network Management Protocol (SNMP). This allows IT administrators to monitor and configure the network with ease, providing a streamlined approach to network management.

In terms of scalability, the 3Com 3677 can accommodate growing network needs. Its modular design allows for the addition of extra ports or features as required, making it a future-proof investment for any organization. This adaptability is complemented by the switch's rugged construction, which ensures durability and longevity, even in demanding environments.

Overall, the 3Com 3677 represents a robust and feature-rich solution for organizations looking to enhance their network capabilities. With its blend of performance, security, and manageability, it stands out as a reliable choice for modern enterprise networking. Whether deploying in a small office or a larger corporate setting, the 3Com 3677 provides the flexibility and functionality necessary to support a wide range of networking applications.