Show CAS-308 Series - User Manual

User's Manual
CAS-308
COLUMN ARRAY SPEAKERS

Summary

Safety Related Symbols

Hazardous Live Terminals Symbol

Symbol indicates hazardous live terminals within the apparatus under normal operating conditions.

Specific Component Replacement Symbol

Symbol in service documentation indicates component replacement by specified part for safety.

Apparatus ON;OFF Symbols

Symbols denoting apparatus ON state and OFF state (requires unplugging).

Warning and Caution Definitions

Definitions for WARNING (injury/death) and CAUTION (apparatus danger) symbols.

Product Disposal Guidelines

Instruction for proper disposal of the product, avoiding municipal waste.

General Safety Warnings

Power Supply Voltage Check

Ensure source voltage matches the apparatus voltage before turning on.

Lightning Storm Precautions

Unplug apparatus during lightning storms or long periods of disuse.

External Connection Safety

External wiring to output terminals requires installation by instructed personnel or ready-made leads.

Cover Removal Warning

Do not remove covers due to high voltages; only qualified personnel should service.

Fuse Replacement Safety

Use specified fuses and disconnect power before replacement to prevent fire.

Protective Grounding Installation

Connect protective grounding to prevent electric shock; never cut the grounding wire.

Operating Conditions and Liquids

Apparatus should not be exposed to dripping, splashing, or liquids.

Important Safety Instructions

General Safety Adherence

Read, follow, keep instructions, heed warnings, and use manufacturer attachments.

Power Cord and Plug Safety

Do not defeat plug safety features; consult electrician if plug doesn't fit. Protect cord from damage.

Cleaning and Servicing Procedures

Clean with air or dry cloth. Do not use solvents. Refer servicing to qualified personnel.

Apparatus Condition and Servicing

Servicing is required if damaged, liquid spilled, exposed to elements, or not operating normally.

Disconnect Device Functionality

The mains plug serves as the readily operable disconnect device for the apparatus.

Introduction to CAS-308 Speaker

Product Overview

Professional column array speaker developed by SHOW, featuring protective grille and aluminum alloy cabinet.

Key Features and Protection

8 x 3" full-range units, power transformers for protection, parallel use for impedance matching.

Bracket Mounting System

Locked bracket screws and a 3mm thick iron fixing plate for secure mounting and force distribution.

Installation Guide

Mounting Bracket Installation

Ensure secure support for product weight and vertical installation with expansion screws.

Column Mounting and Securing

Attach column to bracket using M8 screws, ensuring it is straight and firmly locked.

Angle Adjustment

Adjust column angle vertically (0-30°) and horizontally (-90° to 90°).

System Connection Confirmation

Confirm system output voltage (100V, 70V) and connect cables accordingly.

Accessories and Back Panel

Mounting Bracket Types

Description of the 180° x 30° bracket and the L bracket for mounting.

Back Panel Description

Details the back panel layout and connections for the CAS-308 speaker.

Power Selections and Wiring

Instructions for connecting BLACK and WHITE/BROWN wires for 70V and 100V input.

Product Specifications Summary

Lists Power Capacity (60 Watts) and Protection Class (IP66).

System Connection Plate

70 V System Connection

Instructions for connecting to a 70V system with MONO/DUAL, 70V output, and L/H CUT ON settings.

100 V System Connection

Instructions for connecting to a 100V system with MONO/DUAL, 100V output, and L/H CUT ON settings.

Technical Specifications

Model and System Type

Identifies the model as CAS-308B/CAS-308W, a Column Array Speaker.

Input Voltage and Power

Specifies input voltage (70V/100V) and selectable power ratings (7.5W-60W).

System Impedance and Sensitivity

Details system impedance for 70V/100V and sensitivity (95dB).

Frequency Response and Speaker

Lists frequency response (150Hz-18KHz) and speaker type (8x3" full range).

Dimensions and Weight

Provides physical dimensions (763x121x140mm) and net weight (8.6KG/18.9Lbs).

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The CAS-308 is a professional column array speaker designed for installation applications, developed by SHOW. It is engineered to deliver high-quality audio while offering robust protection and flexible installation options.

Function Description:

The CAS-308 serves as a column array speaker, suitable for public address systems and other sound reinforcement applications. It is designed to provide clear and consistent sound coverage, particularly in environments where controlled sound dispersion is beneficial. The speaker incorporates power transformers to switch power, effectively protecting its internal units. It can be used in parallel to prevent damage to the PA amplifier from low impedance, especially when handling high power input signals.

Important Technical Specifications:

• Model: CAS-308B / CAS-308W (Passive)
• System Type: Column Array Speaker
• Input Voltage: 70V/100V, offering versatility for different amplifier setups.
• Transformer Selectable Power: 7.5W, 15W, 30W, or 60W, allowing for flexible power tap selection to match system requirements.
• System Impedance:
  • 70V: 667Ω, 333Ω, 167Ω, 83Ω
  • 100V: 1333Ω, 667Ω, 333Ω, 167Ω
• Sensitivity (1w/1M): 95dB, indicating efficient sound output for a given power input.
• Max SPL (1M): 116dB, demonstrating its capability for high sound pressure levels.
• Frequency Response (-6dB): 150Hz-18KHz, providing a broad range for vocal and general audio reproduction.
• Speaker Configuration: 8 pieces of 3-inch full-range speakers with 20mm voice coils. These units feature linear paper cones and cloth surrounds for high sensitivity.
• Angle of Coverage (HxV): 120°x20° at 4 kHz, indicating a wide horizontal and narrow vertical dispersion pattern, ideal for directing sound to specific areas.
• Connect: Cable conductor.
• Enclosure Construction: The cabinet is made from extruded aluminum with a resistant paint finish, ensuring durability and a delicate touch. It features a 1.0mm mesh and 1.0mm aluminum grille, which effectively protect the speaker units from external damage and prevent dust ingress.
• Suspension/Mounting: Equipped with 6xM8 points for mounting. The internal fixing plate, made of 3mm thick iron, effectively decomposes the bracket pull force, enhancing mounting stability.
• Dimensions (H×W×D): 763mm (30") × 121mm (4.8") × 140mm (5.5").
• Net Weight: 8.6KG (18.9Lbs).
• Power Capacity: 60 Watts.
• Protection Class: IP66, signifying high protection against dust and strong jets of water, making it suitable for outdoor or demanding environments.

Usage Features:

The CAS-308 offers flexible connection and installation options:

• Power Selection: The back panel includes terminals for selecting power taps (7.5W, 15W, 30W, 60W) for both 70V and 100V systems. Specific instructions are provided to avoid incorrect connections (e.g., not connecting BLACK and WHITE for 70V input, and not connecting BLACK and BROWN for 100V input).
• System Connection Plate:
  • 70V System (Dual Channel Input): For dual channel input, select "DUAL" for "MONO/DUAL" and "70V" for output. The "L/H CUT" should be set to "ON" to prevent low-frequency protection and improve transmission efficiency, suitable for public address systems.
  • 100V System (Dual Channel Input): Similarly, for dual channel input, select "DUAL" for "MONO/DUAL" and "100V" for output. The "L/H CUT" should be set to "ON" for the same reasons as the 70V system.
• Mounting Brackets: The speaker can be installed using either a 180° x 30° bracket or an L bracket.
  • 180° x 30° Bracket: Allows for vertical angle adjustment from 0° to 30° and horizontal adjustment from -90° to 90°.
  • L Bracket: Allows for horizontal angle adjustment from -90° to 90°.
• Installation Process:
  1. Ensure expansion screws of mounting brackets can support the product weight.
  2. Install the bracket vertically in the identified location, securing expansion screws.
  3. Lock the bracket tightly to the wall, ensuring vertical alignment.
  4. Fix the column to the bracket using the 6*M8 screws (provided), ensuring it is straight and firmly locked.
  5. Adjust the column to the appropriate angle using the bracket's adjustable features.
  6. Confirm the system output (100V, 70V) and connect cables accordingly.
• Safety Symbols: The manual highlights important safety symbols, including caution for electric shock, protective grounding terminal, alternating current/voltage, and hazardous live terminal. It emphasizes that only qualified personnel should service the device.

Maintenance Features:

• Cleaning: The apparatus can be cleaned by blowing off dust with a blower or using a dry rag. It is crucial not to use solvents such as benzol, alcohol, or other highly volatile and flammable fluids, as these can damage the apparatus body.
• Servicing: All servicing should be referred to qualified personnel. Users are advised not to perform any servicing beyond what is contained in the operating instructions unless qualified. Servicing is required if the apparatus is damaged (e.g., power cord/plug damage, liquid spills, objects falling in, exposure to rain/moisture, abnormal operation, or drops).
• Fuse Replacement: To prevent fire, only use fuses with specified standards (current, voltage, type). Do not use a different fuse or short-circuit the fuse holder. Always turn off the apparatus and disconnect the power source before replacing the fuse.
• Protective Grounding: Ensure the protective grounding is connected before turning on the apparatus to prevent electric shock. Never cut or disconnect the internal or external protective grounding wire.
• Power Supply: Verify that the source voltage matches the power supply voltage before turning on the apparatus.
• Cover Removal: Do not remove any cover while the power supply is connected due to high internal voltages. Covers should only be removed by qualified personnel, as there are no user-serviceable parts inside.
• Environmental Conditions: The apparatus should not be exposed to dripping or splashing liquids, and no liquid-filled objects (like vases) should be placed on it. It should not be installed near water, heat sources (radiators, stoves, amplifiers), or in areas where ventilation openings are blocked. No naked flame sources (like lighted candles) should be placed on the apparatus.
• Power Cord Protection: Protect the power cord from being walked on or pinched, especially at plugs, convenience receptacles, and where it exits the apparatus.
• Disconnect Device: The mains plug serves as the disconnect device and must remain readily operable.
• Storage: Unplug the apparatus during lightning storms or when unused for long periods.

The manual strongly advises users to read the instructions carefully before use, follow all installation guidelines, and keep the manual for future reference. It warns against installations exceeding specifications, direct rain exposure, and using organic solvents for cleaning. In case of damage or unusual situations, users should contact service personnel immediately.

Show CAS-308 Series Specifications

General

Brand	Show
Model	CAS-308 Series
Category	Speaker System
Language	English