User Guide

Table Of Contents

To get the best from your loudspeakers, it’s important to make sure the amplier

you are using is up to the job. Several factors have to be considered, and it’s

worth clarifying what they mean and how they affect the performance of a

loudspeaker.

Loudspeakers tend to be quantied using Watts, but this is purely a measure

of the amount of power a loudspeaker can take at its input over time, and not

necessarily a measurement of how loud it might go.

Optimal Audio loudspeaker power handling is therefore quoted as Watts (AES)

and Watts (Peak); AES is a standard measurement of average power handling

over time, and Peak represents the transient power handling capability of the

loudspeaker.

So for an Up 4 the AES power rating is 30 Watts, which will continuously

deliver 102dB at 1m distance from the loudspeaker – transients however will

momentarily reach 105dB if you drive it with an amplier capable of producing

enough power to do so.

However, this only applies when the loudspeaker is running in low impedence

mode (8 or 16 Ohms).

All Up series are capable of running at 70 volt – 100 volt line, and Up 4O can only

be run this way. What does this mean?

An amplier that can produce this level of voltage, either via a transformer on the

output or through bridging of channels would normally damage a loudspeaker.

Transformers that step the voltage down to suitable level are tted into the

loudspeakers, and the voltage is maintained along the chain.

Matching Speakers and Amplifiers

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Ceiling Loudspeakers

Loudspeakers

USER GUIDE

Introduction

Overview

Fitting up

Connecting up

Matching

speakers and

amps

Specications

Safety

information