Kramer SPK-OCA504 Manuale utente

KRAMER ELECTRONICS LTD.

USER MANUAL

MODEL:

SPK-OCA504

On-Wall Active Speakers

P/N: 2900-000724 Rev 3

SPK-OCA504 – Contents i

Contents

1Introduction 1

2Getting Started 2

2.1 Achieving the Best Performance 2

3Overview 3

4Your SPK-OCA504 5

5Installing the Speakers 7

5.1 Choosing the Best Location 7

5.2 Installing the Speaker Wires 7

6Technical Specifications 9

Figures

UFigure 1: Active On-Wall Speakers in a Home Theater SetupU4

UFigure 2: Active On-Wall Speakers in a Conference Room SetupU4

UFigure 3: SPK-OCA504 Active SpeakerU5

UFigure 4: Connecting the Active Speaker to the Passive SpeakerU7

SPK-OCA504 - 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 SPK-OCA504 On-Wall Active

Speakers, which are ideal for the following typical applications:

•Boardrooms •Presentation venues

•Conference Rooms •Home theater

•Educational classrooms

The package includes one of each of the following items:

•A pair of SPK-OCA504 Active Speakers

•An RCA cable (2 meters)

•A speaker cable for connecting the active speaker to the passive speaker (4

meters)

•An AC power cord (1.8 meters)

•A pair of U-shaped rotating mounting brackets with 4 mounting bracket

screws

•This user manual

2 SPK-OCA504 - 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 SPK-OCA504 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-OCA504 - Overview 3

3 Overview

The SPK-OCA504 is a powered two-way speaker system designed for indoor wall

mounting. The system accepts a line level stereo input and amplifies it using a

built-in amplifier and outputs a speaker signal to the passive speaker.

The SPK-OCA504 speaker system features:

•Three available inputs (that can either be connected separately or

connected simultaneously to form a mix of the inputs) that consist of:

A Line level unbalanced stereo audio input on a 3.5mm mini jack

connector

A balanced stereo audio input on a 5-pin terminal block connector

An unbalanced stereo audio input on two RCA connectors

•An output to external amplified or non-amplified speakers

•An output to an external sub-woofer

•A unique looping output, letting you chain additional pairs of active and

passive speakers

•TREBLE, BASS and VOLUME control knobs

•A control panel on the back of the active speaker that controls all the

functions of both speakers

•A magnetic shield

•Enhanced bass reflex design

•An integrated 2x30W stereo amplifier (no external amplifier required)

•A self adjusting power range of 90 to 240V AC

•Auto-power shutoff

The SPK-OCA504 is enclosed in an ABS cabinet and can be mounted indoors on

the wall, vertically or horizontally. The mounting brackets are made of hardened

steel that attach to each speaker, letting you rotate each speaker to the left or

right.

4 SPK-OCA504 - Overview

Figure 1 and Figure 2 show examples of how the speakers can be installed in

conference room and home theater setups, respectively.

Figure 1: Active On-Wall Speakers in a Home Theater Setup

Figure 2: Active On-Wall Speakers in a Conference Room Setup

LCD Display/

Plasma Display

Right On Wall

Speaker

SPK-OCA504

(Passive)

Left On Wall

Speaker

SPK-OCA504

(Active)

Projector

On Wall

Speakers

SPK-OCA504

Switcher/Scaler

Computer

Graphics

Source

DVD

Laptop

Left (Active)

Right (Passive)

SPK-OCA504 - Your SPK-OCA504 5

4 Your SPK-OCA504

This section defines the active SPK-OCA504:

Figure 3: SPK-OCA504 Active Speaker

6 SPK-OCA504 - Your SPK-OCA504

Feature

Function

1 SPEAKER OUT Connectors Connect the active speaker to the (+) and (-)

stereo sockets on the passive speaker

The L speaker is active and the R speaker is

passive

2 INPUT

Connectors

5-pin Terminal Block

Connect the audio source to one or more of the

input connectors

3 3.5mm Mini Jack

4 L and R RCA

5 BASS Control Knob Rotate the button to control the bass

6 TREBLE Control Knob Rotate the button to control the treble

7 VOLUME Control knob Rotate the button to adjust the audio volume

8 AC-Input Power Supply Connect to the AC power cord

9 POWER Switch For turning the unit ON (I), OFF (0) or AUTO

shutoff (II)

When selecting the AUTO shutoff mode, the

speaker enters the standby mode when idle

for over 10 minutes

10 POWER/STANDBY LED Illuminates in green when powered (POWER

switch set to ON or AUTO)

illuminates in red when in the standby mode

(POWER switch is set to AUTO)

In the AUTO mode, the LED illuminates green

if an input signal is detected and illuminates

red if idle for over 10 minutes

11 LOOP OUTPUT 3.5mm Mini Jack

Connector

Connect to another pair of active speakers

12 SUB OUT 3.5mm Mini Connector If required, connect an active sub-woofer to this

output for maximum bass reproduction

SPK-OCA504 - Installing the Speakers 7

5 Installing the Speakers

This section explains how to:

•Choose the best location for your speakers (see Section 5.1

•Install the speaker wires (see

)

Section 5.2

5.1 Choosing the Best Location

)

Before installing the speakers:

•Experiment by placing the speakers in different locations before finally

deciding on the most suitable location

•Be sure that the wall type is appropriate for the mounting brackets, that is,

either solid wood, bricks, concrete, hollow building blocks, or wood studs.

You cannot mount the brackets on gypsum walls

•Check that the mounting location is free of obstructions, such as electrical

piping, AC ducts or water lines, and so on

5.2 Installing the Speaker Wires

To install the speakers, do the following:

1. Connect the + and - stereo sockets of the active speaker to the + and -

stereo sockets of the passive speaker using the cable supplied, as follows:

Figure 4: Connecting the Active Speaker to the Passive Speaker

Active Speaker (L)

Passive Speaker (R)

8 SPK-OCA504 - Installing the Speakers

2. Connect the audio source (for example, a CD or a DVD player and so on) to

one of the INPUT connectors on the active speaker.

3. Connect the power.

4. Adjust the volume on the input source.

5. Adjust the volume control on the rear side control panel.

6. Adjust the bass and treble control on the rear side control panel.

7. If required, connect an additional set of speakers by connecting the LOOP

OUTPUT connector to the input of a second active speaker.

8. If required, mount the speaker on the wall via the removable mounting

brackets. To do so:

Mark the location of the mounting holes

Screw the mounting screws (not included in the package) into the

mounting holes

Slide the mounting bracket over the mounting screws so that the

mounting bracket is secured to the surface

Indice

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