Cambridge Audio ES20 Outdoor Speaker User Manual
- June 11, 2024
- Cambridge Audio
Table of Contents
ES20 Outdoor Speaker
Introduction
The ES20 Outdoor Speaker is a high-quality speaker designed for outdoor use. It comes with a mounting bracket for easy installation and features a 5.25-inch injection-molded cone woofer and a 1-inch anodized aluminum dome tweeter.
What’s included with the ES20?
- 1 x ES20 Outdoor Speaker
- 1 x Mounting Bracket
Installation instructions
- Choose a suitable location for the speaker, taking into account the desired sound coverage and exposure to the elements.
- Attach the mounting bracket to the wall or other suitable surface using screws (not included).
- Loosely fit the speaker to the mounting bracket and adjust it to your desired position. We would recommend angling the speaker downwards slightly to minimize direct exposure to the elements.
- Once you’re happy with the positioning, tighten the two knobs to secure the speaker.
Technical specifications
- Sensitivity (SPL): 88dB
- Frequency Response: 65Hz – 20kHz
- Impedance: 4 – 8 Ohms
- Drivers: 1 x 5.25-inch injection-molded cone woofer, 1 x 1-inch anodized aluminum dome tweeter
- Recommended Amplifier Power: 10 – 100 Watts
- Speaker Dimensions (H x W x D): 273 x 172 x 265mm
- Weight: 2.5kg (5.5lbs)
Thank you for purchasing these Cambridge Audio Incognito outdoor speakers. We hope that you enjoy many years of listening pleasure from them. Your speakers can only be as good as the system it is connected to. Please do not compromise on your amplifier or cabling. Naturally we particularly recommend amplification from the Cambridge Audio range, which has been designed to the same exacting standards as our speakers. Your dealer can also supply excellent quality speaker cable to ensure your system realises its full potential. Thank you for taking the time to read this manual, we do recommend you keep it for future reference. This document contains proprietary information protected by copyright. All rights are reserved. No part of this manual may be reproduced by any mechanical, electronic or other means, in any form, without prior written permission of the manufacturer. All trademarks and registered trademarks are the property of their respective owners.
Installation instructions
Before installing your ES20 outdoor speakers, consider their positioning and requirements for cabling. Where possible use existing cover to minimise direct exposure to the elements and ensure that the wall being used for mounting will be able to support the weight of the speaker.
- Firstly, mount the mounting bracket horizontally or vertically in your desired location, then feed your speaker cable through the bracket prior to connection.
- With your amplifier turned off, connect the speaker using the terminals located on the rear panel. Please ensure that you match the polarity of each connection between speaker and amplifier.
- Loosely fit the speaker to the mounting bracket and adjust it to your desired position. We would recommend angling the speaker downwards slightly to minimise direct exposure to the elements. Once you’re happy with the positioning, tighten the two knobs to secure the speaker.
Frequently asked questions
What is meant by speaker sensitivity?
Speaker sensitivity is the level produced by the speaker at one meter, when
supplied with one watt of power from an amplifier. It’s a way of describing
how well the speaker produces acoustic energy, based on a given input. The
level is measured in dB SPL – this shorthand for ‘sound pressure level’ –
sound is basically fluctuations in air pressure, so any time you see SPL, this
means ‘sound in the real world’. So, let’s say we have a speaker with an 87dB
sensitivity, and a speaker with a 90dB sensitivity – the 90dB speaker is going
to be considerably louder, as every 3dB added represents a doubling of power.
What is a crossover?
Most speakers will have multiple drivers. A driver is sometimes called a
transducer, which is a device that turns one type of energy into another – in
this case, electrical energy to sound energy. In a loudspeaker, it is often
the case that we might want multiple drivers – one to handle low-end, one to
handle the mid-range, and one to handle the treble. This latter driver is
often called a tweeter. To get the benefit of this arrangement, we need to
split the signal into different frequency components. The circuit that does
this is called a crossover.
What is impedance?
You will often see impedance mentioned when researching speakers, and
amplifiers. Impedance is basically resistance measured at a given frequency,
given as a value in Ohms (Ω), and is incredibly important to consider when
setting up an audio system as it determines the ‘load’ placed on an amplifier
by the speakers. For example, let’s say we have an amplifier that is rated to
deliver 100W into an 8Ω speaker load. If we were to then use speakers with an
impedance of 4Ω with the same amplifier, the amp would then need to supply
200W as a halving of the impedance results in a doubling of the required power
due to the reduction of the load on the amplifier. In a situation such as
this, if the amp can’t supply the required power for a lower impedance, then
it can result in overheating, and damage to the amplifier and speakers.
For this reason, it is important to pay attention to amplifier specifications, and suggested impedance ratings.
Troubleshooting
No sound through one or both channels.
- Check that the amplifier is turned on.
- Ensure that the correct input source is selected on the amplifier.
- Confirm that all connections between the amplifier and loudspeakers are secure.
- Check that the connections between the source equipment and amplifier are secure.
- Check the polarity of the loudspeaker connections.
- Check that the volume control is set correctly on the amplifier.
There is a distorted or inconsistent sound.
- Confirm that all connections between the amplifier and loudspeakers are secure.
- Check the polarity of the loudspeaker connections.
- Check that the connections between the source equipment and amplifier are secure.
References
Read User Manual Online (PDF format)
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