Kramer SPK-C812 Manuale utente

KRAMER ELECTRONICS LTD.

USER MANUAL

MODELS:

SPK-C812

SPK-C813

SPK-C814

SPK-C815

SPK-C816

SPK-C817

SPK-C818

SPK-C819

SPK-C820

ESD™ Complete K-overage

Ceiling Speaker

P/N: 2900-300119 Rev 1

ESD Ceiling Speaker – Contents i

Contents

1Introduction 1

2Getting Started 2

2.1 Achieving the Best Performance 2

3Overview 3

3.1 Defining the ESD Ceiling Speaker 5

4Installing the ESD Ceiling Speaker 6

4.1 Choosing the Best Location 6

4.2 The Input Pinout 6

4.3 Determining the Number of Speakers Needed and their Location 7

4.4 Preparing the ESD Ceiling Speaker for Operation 9

4.5 Installing the Tile Size Speaker 9

4.6 Installing the Half-Tile Size Speaker 11

5Technical Specifications 14

Figures

Figure 1: Tile Size ESD Ceiling Speaker (that fits into the ceiling) 4

Figure 2: ESD Ceiling Speaker 5

Figure 3: ESD Ceiling Speaker Input Pinout 6

Figure 4: Speaker Location in a Room—using ESD Speakers vs. using Standard Ceiling Speakers7

Figure 5: Connecting One Stereo Speaker 8

Figure 6: Connecting Two Mono Speakers 8

Figure 7: Fitting the Tile Size Speaker 10

Figure 8: Securing the Speaker to a Ceiling Anchor Point 10

Figure 9: Placing the Ceiling Mounting Bracket 11

Figure 10: Fitting the Half-Tile Size Speaker 12

Figure 11: Replacing the Ceiling Tile 12

Figure 12: ESD Ceiling Speaker in a Boardroom Setup 13

ESD Ceiling Speaker - Introduction 1

1 Introduction

Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been

providing a world of unique, creative, and affordable solutions to the vast range of

problems that confront the video, audio, presentation, and broadcasting

professional on a daily basis. In recent years, we have redesigned and upgraded

most of our line, making the best even better!

Our 1,000-plus different models now appear in 11 groups that are clearly defined

by function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix

Switchers; GROUP 3: Control Systems; GROUP 4: Format/Standards Converters;

GROUP 5: Range Extenders and Repeaters; GROUP 6: Specialty AV Products;

GROUP 7: Scan Converters and Scalers; GROUP 8: Cables and Connectors;

GROUP 9: Room Connectivity; GROUP 10: Accessories and Rack Adapters and

GROUP 11: Sierra Products.

Congratulations on purchasing your Kramer ESD™ (Equal Sound Dispersion)

Ceiling Speaker, which is ideal for overhead distributed audio for professional

applications (music and speech) and educational applications (mainly speech), as

shown here:

Complete K-overage ESD

® Ceiling Speakers:

Applications

SPK-C812, SPK-C813, SPK-C814,

SPK-C815, SPK-C820

SPK-C816, SPK-C817, SPK-C818,

SPK-C819

Business and professional environments

(such as presentations)

Educational environments

(such as lectures)

•Conference rooms and boardrooms

•Hotel lobbies and large office buildings

•Retail stores

•Airports

•University lecture halls

•Classrooms

•Presentation venues

2 ESD Ceiling Speaker - Getting Started

2 Getting Started

We recommend that you:

•Unpack the equipment carefully and save the original box and packaging

materials for possible future shipment

•Review the contents of this user manual

Use Kramer high performance high resolution cables

Go to http://www.kramerelectronics.com to check for up-to-date

user manuals, application programs, and to check if firmware

upgrades are available (where appropriate).

2.1 Achieving the Best Performance

To achieve the best performance:

•Use only good quality connection cables to avoid interference, deterioration

in signal quality due to poor matching, and elevated noise levels (often

associated with low quality cables)

•Avoid interference from neighboring electrical appliances that may adversely

influence signal quality

•Position your Kramer Speakersaway from moisture, excessive sunlight and

dust

ESD Ceiling Speaker - Overview 3

3 Overview

The ESD™ (Equal Sound Dispersion) Ceiling Speaker is a high- performance

complete K-overage ESD ceiling speaker that can be mounted on the ceiling and

appears as a suspended ceiling tile.

The ESD ceiling speaker is constructed with a central driver and four pivoting

tweeters and is housed in an enclosed shallow enclosure.

The Kramer complete K-overage ESD provides unmatched sound response in a

suspended ceiling device for the professional (PRO) and educational (EDU)

markets. This means that you get the sound you need but with a reduced number

of speakers.

The ESD ceiling speaker features:

•Complete K-overage ESD™ – a patent pending design with 4 pivoting

tweeters that direct the sound, based on the room environment, for equal

sound dispersion (ESD)

•Wide 180° sound dispersion

•One Kramer ESD speaker that replaces multiple standard speakers for quick

and easy installation

•Excellent bass response that is optimized for music and high−quality voice

reproduction

•4 pivoting tweeters, 3/4” (6Ω) with silk domes

•A polypropylene cone woofer (8Ω)

•A 40W RMS power rating

•Smooth frequency response

•A shallow 4-inch depth (approx. 100mm)

•RoHS compliance

Compliance to RoHS means acting in full accordance with RoHS regulations that

restrict the use of certain dangerous substances commonly used in electronic and

electronic equipment

•A choice of models: tile size or half-tile size, stereo or mono (see table

below)

4 ESD Ceiling Speaker - Overview

•A bass port for a bass reflex effect (for educational models)

Figure 1: Tile Size ESD Ceiling Speaker (that fits into the ceiling)

The speaker is easily installed and is available in eight different models: PRO or

EDU, stereo or mono, tile size or half-tile size configurations, and a slightly smaller

size (for any region with suspended ceiling tiles of 595mm) as defined here:

Complete K-overage ESD® Ceiling Speakers Available Models

Model Name Part Number Description

Professional

tile size stereo SPK-C812

•Polypropylene woofer, surrounded with rubber

•2 left and 2 right silk dome tweeters

•No bass reflex

Professional

tile size mono SPK-C813

•Polypropylene woofer, surrounded with rubber

•4 silk dome tweeters

•No bass reflex

Professional

half-tile size

stereo

SPK-C814

•Polypropylene woofer, surrounded with rubber

•2 left and 2 right silk dome tweeters

•No bass reflex

Professional

half-tile size

mono

SPK-C815

•Polypropylene woofer, surrounded with rubber

•4 silk dome tweeters

•No bass reflex

Educational tile

size stereo SPK-C816

•Paper cone woofer, surrounded with rubber

•2 left and 2 right Ti pivoting tweeters, installer adjusted

•Bass reflex

Educational tile

size mono SPK-C817

•Paper cone woofer, surrounded with rubber

•4 Ti pivoting tweeters, installer adjusted

•Bass reflex

Educational

half-tile size

stereo

SPK-C818

•Paper cone woofer, surrounded with rubber

•2 left and 2 right Ti pivoting tweeters, installer adjusted

•Bass reflex

Educational

half-tile size

mono

SPK-C819

•Paper cone woofer, surrounded with rubber

•4 Ti pivoting tweeters, installer adjusted

•Bass reflex

Professional

Tile size stereo

(for 595mm

tiles)

SPK-C820

•Polypropylene woofer, surrounded with rubber

•2 left and 2 right silk dome tweeters

•No bass reflex

ESD Ceiling Speaker - Overview 5

3.1 Defining the ESD Ceiling Speaker

Figure 2defines the ESD Ceiling Speaker:

Figure 2: ESD Ceiling Speaker

Flat Ceiling Speaker Features

# Feature Function

1 Speaker Tile Base Half-tile size or tile size

2 Speaker Steel Enclosure Shallow fireproof enclosure

3 INPUT Terminal Block Connector Connect to the audio source (see Section 4.2

)

Anchor Ring Secure the speaker to the ceiling anchoring point

5 Tweeters (4) Pivoting titanium or silk

6 Woofer Polypropylene or paper surrounded by rubber

7 Bass Port For a bass reflex effect

Top View Underside View

6 ESD Ceiling Speaker - Installing the ESD Ceiling Speaker

4 Installing the ESD Ceiling Speaker

This section explains how to install the ESD Ceiling Speaker, that is:

•Choosing the best place to locate your speaker (see Section 4.1

•Connecting the wires (see

)

Section 4.2

•Determining the number of speakers (see

)

Section 4.3

•Preparing the speaker for operation (see

)

Section 4.4

•Installing the tile size speaker (see

)

Section 4.5

•Installing the half-tile size speaker (see

)

Section 4.6

4.1 Choosing the Best Location

)

Ideally, locate the speakers above the main listening area. Before doing so, be

sure that:

•The desired location is free of obstructions, such as electrical piping,

AC ducts or water lines, and so on

•There is enough space behind the mounting surface for the speaker

•The rear side of the speaker is not blocked by wall studs or other objects

4.2 The Input Pinout

Figure 3illustrates the terminal block pinout for mono and stereo models

respectively:

Figure 3: ESD Ceiling Speaker Input Pinout

The red wire connects to the + pin and the black wire connects to

the – pin.

Mono Model Pinout Stereo Model Pinout

INPUT

R L

INPUT

ESD Ceiling Speaker - Installing the ESD Ceiling Speaker 7

4.3 Determining the Number of Speakers Needed and their

Location

When installed in a room with a standard ceiling height of 2.7m (8.8 feet), the

optimal distance between the speakers is about 10 meters. The speaker should be

installed lengthwise relative to the shape of the room. The example in Figure 4

shows the ESD Ceiling Speaker installed in a 10m x 5m room. A 10m x 5m room

size requires only one ESD speaker for full room coverage rather than four

standard ceiling speakers.

Figure 4: Speaker Location in a Room—using ESD Speakers vs. using Standard Ceiling Speakers

To achieve optimum sound quality and ESD (Equal Sound Dispersion):

•Select the appropriate output from the amplifier to use with the speaker

(either stereo or mono)

•If the size of the room only requires a single speaker, we recommend using the

mono/stereo speaker model for speech and music (see Figure 5)

8 ESD Ceiling Speaker - Installing the ESD Ceiling Speaker

•If the size of the room requires more than one speaker, use two mono

speaker models. Connect the speakers to the left and right connectors of the

amplifier, respectively (see Figure )6

Figure 5: Connecting One Stereo

Speaker

Figure 6: Connecting Two Mono

Speakers

OUTPUT

INPUT

Amplifier

Speaker

8Ω

OUTPUT

INPUT

Amplifier

Speaker

8Ω

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