Kramer SPK-CC348F Bedienungsanleitung

Kramer Electronics, Ltd.

USER MANUAL

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

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Models:

SPK-CC688,

Closed-back Ceiling Speakers

SPK-CC448,

Closed-back Ceiling Speakers

SPK-CC444,

Closed-back Ceiling Speakers

SPK-CC348F,

Closed-back Ceiling Speakers

Contents

Introduction 1

Getting Started 1

Overview 2

Your Closed-back Ceiling Speakers 3

Installing the Closed-back Ceiling Speakers 5

5.1

Choosing the Best Location 5

5.2

Cutting the Ceiling Tile 5

5.3

Painting the Speaker 8

Technical Specifications 9

Figures

Figure 1: Closed-back Ceiling Speaker 3

Figure 2: Closed-back Ceiling Speaker Schematic Diagram 4

Figure 3: Installing the Closed-back Ceiling Speakers 6

Figure 4: Plugging and Securing the Cables 7

Figure 5: Tighten the Mounting Tabs 7

Figure 6: Adjust Tap Selector (for the SPK-CC688) 8

Tables

Table 1: Closed-back Ceiling Speakers – Definition 2

Table 2: Closed-back Ceiling Speakers Hardware Items 3

Table 3: Ceiling Mounting Kit Items 4

Table 4: Technical Specifications of the SPK-CC688 9

Table 5: Technical Specifications of the SPK-CC448 and the SPK-CC444 9

Table 6: Technical Specifications of the SPK-CC348F 10

Introduction

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

500-plus different models now appear in eight groups

that are clearly defined

by function.

Congratulations on purchasing your Kramer Closed-back Ceiling Speakers,

available in four models: SPK-CC688, SPK-CC448, SPK-CC444 and/or

SPK-CC348F, which are ideal for:

Home theater sound systems

Multimedia systems

The package includes the following items:

Closed-back Ceiling Speakers SPK-CC688, and/or SPK-CC448 and/or

SPK-CC444 and/or SPK-CC348F

Mounting kit

This user manual

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 cables

1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:

Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;

GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors

2 Download up-to-date Kramer user manuals from the Internet at this URL: http://www.kramerelectronics.com

3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Overview

3 Overview

The Closed-back Ceiling Speakers include a pair of high performance closed

back speakers that can be mounted on the ceiling, as well as a ceiling

mounting kit for safely securing the speakers to the ceiling. Table 1 defines

the closed-back ceiling speakers:

Table 1: Closed-back Ceiling Speakers – Definition

Name Diameter [“] Resistance [



] Closed-back Depth [“]

SPK-CC688 6.5 8 8

SPK-CC448 4 8 4

SPK-CC444 4 4 4

SPK-CC348F

3 8 4

To achieve the best performance:

Connect only good quality connection cables

, thus avoiding 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 and position your

Kramer Closed-back Ceiling Speakers away from moisture, excessive

sunlight and dust

1 Such as the Kramer BC-2S cable

Your Closed-back Ceiling Speakers

4 Your Closed-back Ceiling Speakers

Figure 1 and Table 2 define the closed-back ceiling speakers:

Figure 1: Closed-back Ceiling Speaker

Table 2: Closed-back Ceiling Speakers Hardware Items

Description

A pair of

ceiling

speakers

(one shown)

Two grilles

(one shown)

Cutout

template

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your Closed-back Ceiling Speakers

Table 3 defines the ceiling mounting kit items

Table 3: Ceiling Mounting Kit Items

Four

support

ring screws

Two

ceiling

support

rings

(C-ring) –

one shown

Two pairs of

tile rails – one

of a pair

shown

Each closed-back ceiling speaker is supported by a C-ring and two tile rails

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.

Figure 2 shows a schematic diagram of the closed-back ceiling speaker:

Figure 2: Closed-back Ceiling Speaker Schematic Diagram

1 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

2 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

Installing the Closed-back Ceiling Speakers

5 Installing the Closed-back Ceiling Speakers

This section explains how to install the closed-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)

Painting the speakers (see section 5.3)

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

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 cardboard template

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

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

If you are mounting the speakers onto a ceiling tile, remove the ceiling tiles

where you plan to install the speakers. Use the template to trace and then

cutout the speaker hole over an empty box.

The closed-back ceiling speakers are supported by the ceiling mounting kit

(two C-rings and two pairs of tile rails

). 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.

1 Keep this circular piece of cardboard for later use as a mask, as you may want to paint the speakers (see section 5.3)

2 Initially, you can cut a smaller area inside the marked hole just to be sure that the space above the speakers is clear

3 Do not nail or staple the speaker wires

4 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

5 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

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Installing the Closed-back Ceiling Speakers

To install the closed-back ceiling speakers, do the following:

1. Place the C-ring over the hole cut in the ceiling tile (on the “ceiling”

side). Place it around the hole so that the tabs are located in parallel to the

tile edges (see Figure 3).

T-channel Grid

Support Ring

Screws

Ceiling Tile

Tile Rails

C-ring

Figure 3: Installing the Closed-back Ceiling Speakers

2. Place the tile rails on the tile and snap them into the two tabs on the

C-ring.

Align the rails so that the ends extend over the T-channel grid.

3. Insert a screw through each tab on the C-ring to secure the rails.

4. Connect the speaker wires to the appropriate connector terminals

and

screw the hold-down screws on the connector until tight

You can connect the speakers in the two following possible layouts:

Wiring in parallel: connect the wire pair of the subsequent speaker

to PIN 2 and PIN 3. When one input connector is removed,

subsequent speakers will remain connected (see Figure 2)

Daisy-chaining: connect the wire pair of the subsequent speaker to

PIN 1 and PIN 4. When one input connector is removed, subsequent

speakers will be disconnected (see Figure 2)

5. Plug the connector into the socket in the terminal cup of the speaker and

tighten the screws (see Figure 4).

6. Loosen the horizontal screws and then the strain relief screws.

7. Run the wires through the wires opening in the fitting and plug the input

connector into the terminal block connector of the speaker.

1 PIN 1 and PIN 2 are connected internally and are positive (+). PIN 3 and PIN 4 are connected internally and are negative (-)

2 Use a small screwdriver

Installing the Closed-back Ceiling Speakers

Strain relief screw

Horizontal screw

Hold down screw

Wires opening

Terminal block

Figure 4: Plugging and Securing the Cables

8. Tighten the strain relief fitting, if plenum cable

is used:

Slide the wiring through the strain relief on the terminal cover plate

Hold the strain relief fitting tight around the cable

Tighten the strain relief screws first and then the horizontal screw

9. Push the speaker into the ceiling hole until the front baffle rim is leveled

with the ceiling.

10. Tighten the mounting tabs by turning the screw clockwise

(see Figure 5).

When tightening the mounting tabs, the tabs automatically turn outward,

thus clamping the speaker to the wall from its rear side.

Note: Do not over-tighten the screws. It may cause damage to both the

speakers and the surface.

Figure 5: Tighten the Mounting Tabs

1 If other types of cables are used, an alternate conduit fitting can be used by removing the existing fitting and replacing with

an alternate one

2 In cases of an insulated speaker wire and plenum cable, it is often possible to provide acceptable strain relief force simply

by tightening the strain relief screws onto the terminal cover plate

3 The first quarter turn, rotates the tab outwards, and the following turns the tabs tighten to the rear side of the ceiling surface

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Installing the Closed-back Ceiling Speakers

11. If required, you can further secure the speaker by connecting the speaker

support ring to an independent secure anchor point.

12. Adjust each speaker to the appropriate tap setting

before installing the

grille

(see Figure 6).

Figure 6: Adjust Tap Selector (for the SPK-CC688)

13. Install the grilles to the speakers:

Push the grille fastener into the hole in front of the baffle

Press the grille into place until the front of the grille is flush with the

rim of the baffle

Check that the grille is securely seated

5.3 Painting the Speaker

You can paint the speakers before or after the speaker is installed.

When painting before installation:

Clean the rim and grille with mineral spirits or other light solvent that is

unlikely to damage the surface

Spray with color by holding the spray can at an angle of 45

Note: When spraying the grille, take care not to clog the holes in the grille

as this will greatly reduce the sound quality of the speakers

1 The tap selector has different values depending on the model. For example, Figure 6 shows the Tap Selector for the

SPK-CC688

2 In addition to the 8setting, the power taps are 30W, 15W, 7.5W and 3.7W at both 70.7V and 100V, with a 1.8W tap for

70.7V only

3 To remove the grille, insert two bent paper clips into the holes in the grille and carefully pull it down. Repeat this around the

perimeter of the grille until it is completely removed

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