Kramer SPK-C611 User manual

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SPK-C611 – Contents i

Contents

1Introduction 1

2Getting Started 2

2.1 Achieving the Best Performance 2

3Overview 3

4Your SPK-C611 4

5Installing the Open-back Ceiling Speakers 6

5.1 Choosing the Best Location 6

5.2Cutting the Ceiling Tile 6

5.3 Installing the Open Back Ceiling Speakers 7

5.4 Painting the Speaker 9

6Technical Specifications 10

Figures

Figure 1: Open-back Ceiling Speakers in a Boardroom Setup 3

Figure 2: SPK-C611 Open-back Ceiling Speakers 4

Figure 3: Position Mounting Tab 7

Figure 4: Installing the Open-back Ceiling Speakers 8

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SPK-C611 - 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 video, audio, presentation, and broadcasting professionals

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 Routers;

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 SPK-C611 Open-back Ceiling

Speakers, which are ideal for the following typical applications:

•Boardrooms •Presentation venues

•Conference rooms •Training rooms

•Educational classrooms •Hotel lobbies

The package includes one of each of the following items:

•A pair of SPK-C611 speakers

•A cardboard template

•This user manual

2 SPK-C611 - 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 (such as the Kramer BC-2S) to

avoid interference, deterioration in signal quality due to poor matching, and

elevated noise levels (often associated with low quality cables)

•Do not secure the cables in tight bundles or roll the slack into tight coils

•Avoid interference from neighboring electrical appliances that may adversely

influence signal quality

•Position your Kramer SPK-C611 away from moisture, excessive sunlight

and dust

To ensure that you obtain the best sound results, do not open the

housing of the passive speaker or the active speaker.

SPK-C611 - Overview 3

3 Overview

The SPK-C611 speakers include a pair of high performance Open-back Ceiling

speakers that can be mounted on the ceiling. The optional Kramer Suspended

Ceiling Speaker Mounting Kit (SKIC) can safely secure the speakers to the ceiling

as well.

Figure 1 shows an example of how the Open-back Ceiling speakers can be

installed in a boardroom setup:

Figure 1: Open-back Ceiling Speakers in a Boardroom Setup

4 SPK-C611 - Your SPK-C611

4 Your SPK-C611

Figure 2 defines the SPK-C611:

Figure 2: SPK-C611 Open-back Ceiling Speakers

The speaker black and red stereo sockets connect to the black and red sockets of

the amplifier.

SPK-C611 - Your SPK-C611 5

The following table defines the Open-back ceiling speaker hardware items (per

speaker pair):

Description

A pair of ceiling

speakers

(one shown)

Two grilles

(one shown)

Cutout

template

The following table defines the items that make up the optional Suspended Ceiling

Speaker Mounting Kit (SKIC):

Four

support

ring

screws

Two ceiling

support rings

(C-ring) – (one

shown)

Two pairs of tile

rails (one of a

pair shown)

Each Open-back ceiling speaker is supported by a C-ring and two tile rails. The tile

rails prevent the speakers from falling if the tile itself comes out or falls apart, as

their ends catch onto the T-grid.

When mounting onto the ceiling tiles, use both supports. When mounting onto a

sheetrock ceiling, the C-ring alone is used to reinforce the ceiling material.

Be sure that the tiles can support the speaker. Smaller sized tiles or

fiberglass-type tiles cannot support the weight of the speakers.

When this is the case, the speakers will need additional support.

6 SPK-C611 - Installing the Open-back Ceiling Speakers

5 Installing the Open-back Ceiling Speakers

This section explains how to install the Open-back ceiling speakers, that is:

•Choosing the best place to locate your speakers (see Section 5.1)

•Cutting the ceiling tile (see Section 5.2)

•Installing the speakers (see Section 5.3)

•Painting the speakers (see Section 5.4)

5.1 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 speakers

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

5.2 Cutting the Ceiling Tile

To cut the ceiling tile, do the following:

1. Remove the circle in the supplied template.

Keep this template for later use as a mask, as you may want to paint the speakers (see

Section 5.4)

2. Mark the opening in the correct location by tracing the hole in the template.

3. Cut out the hole according to the template or with a circular cutter set to the

appropriate cutout size.

Initially, you can cut a smaller area inside the marked hole just to be sure that the

space above the speakers is clear

4. Route the wiring from the amplifier to the speakers’ cutout holes, taking care

not to place them next to electrical wires or at least at a distance of about

two feet from an AC line.

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