Kramer SPK-C612, SPK-C412, SPK-C411 User Manual
KRAMER ELECTRONICS LTD.
USER MANUAL
MODELS:
SPK-C612
Closed-back Ceiling Speakers
SPK-C412
Closed-back Ceiling Speakers
SPK-C411
Closed-back Ceiling Speakers
P/N: 2900-300113 Rev 1
Closed-back Ceiling Speakers – Contents i
Contents
1 Introduction 1
2 Getting Started 2
2.1 Achieving the Best Performance 2
3 Overview 3
4 Your Closed-back Ceiling Speakers 4
5 Installing the Closed-back Ceiling Speakers 6
5.1 Choosing the Best Location 6
5.2 Cutting the Ceiling Tile 6
5.3 Mounting the Speakers 7
5.4 Painting the Speaker 10
6 Technical Specifications 11
Figures
UFigure 1: Closed-back Ceiling Speakers in a Boardroom SetupU 3
UFigure 2: SPK-C612 Closed-back Ceiling SpeakerU 4
UFigure 3: SPK-C412 / SPK-C411 Closed-back Ceiling SpeakerU 4
UFigure 4: Closed-back Ceiling Speaker Schematic DiagramU 5
UFigure 5: Installing the Closed-back Ceiling SpeakersU 7
UFigure 6: Plugging and Securing the CableU 8
UFigure 7: Tighten the Mounting TabsU 9
UFigure 8: Adjust Tap Selector (for the SPK-C612)U 9
Closed-back Ceiling Speakers - Introduction 1
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 SPK-C612, SPK-C412 and
SPK-C411 Closed-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 the following items:
• A pair of SPK-C612 and/or SPK-C412 and/or SPK-C411 speakers
• Mounting kit
• This user manual
2 Closed-back Ceiling Speakers - 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)
• Avoid interference from neighboring electrical appliances that may adversely
influence signal quality
• Position your Kramer Closed-back Ceiling Speakers 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.
i
i
Closed-back Ceiling Speakers - Overview 3
3
3 Overview
The Closed-back Ceiling speakers consist of a pair of high performance closed
back speakers. The pair can be mounted on the ceiling, as well as via a ceiling
mounting kit used to safely secure the speakers to the ceiling. The speakers are
defined in the following table:
Name Diameter [ " ]
Resistance [ Ω ]
Closed-back Depth [ " ]
SPK-C612
6.5 8 7
SPK-C412
4 8 4
SPK-C411
4 4 4
Figure 1 shows an example of how the Closed-back Ceiling speakers can be
installed in a boardroom setup:
Figure 1: Closed-back Ceiling Speakers in a Boardroom Setup
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