cambridgeaudio EVO S Bookshelf Speakers Instruction Manual

: June 15, 2024
: cambridgeaudio

Table of Contents

EVO S Bookshelf Speakers
Introduction
What’s included with the EVO S?
Front panel
Rear panel
Installation instructions
Technical speciﬁcations
Frequently asked questions
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

EVO S Bookshelf Speakers
Manual Generated: 06/08/2023 – 12:58

EVO S Bookshelf Speakers

Last updated: Gennaio 9, 2023 08:27. Revision #8334

Users Manual

Introduction

Last updated: Gennaio 19, 2023 01:59. Revision #8438
Thank you for purchasing these Cambridge Audio EVO S bookshelf loudspeakers. We hope that you enjoy many years of listening pleasure from them. Your loudspeakers 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 loudspeakers. 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.
© Copyright Cambridge Audio Ltd .
For upcoming news on future products, software updates and exclusive oﬀers, make sure you register your product at http://www.cambridgeaudio.com/register

What’s included with the EVO S?

Last updated: Gennaio 19, 2023 01:59. Revision #8439

2 x EVO S bookshelf speakers.
2 x magnetic speaker grille.
2 x bass plug.
2 x 3m speaker cable (terminated).
Quick start guide.

Front panel

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1” (25mm) Silk Dome Tweeter.
6.5”(165mm) Anodized Aluminium Mid/Bass Driver.

Rear panel

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Rear bass port.
+/- Speaker connection terminals.

Installation instructions

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Firstly, using high quality speaker cable connect the EVO S speakers to the speaker terminals on your ampliﬁer. Ensure that you pay close attention to match the polarity of each connection.
If placed on a desk, or close to a wall you may beneﬁt from using the included foam bass tuning bungs. These can be placed into the rear port of each speaker to reduce the low frequency output.
Finally, when positioning, we would suggest that the distance between speakers and the listening position is equal. However, we would encourage experimentation until you ﬁnd a solution that works for your space.

Technical speciﬁcations

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Sensitivity (SPL)	88dB
Frequency Response	50Hz – 40kHz
Impedance	8 Ohms
Drivers	1 x 6.5” (165mm) anodized aluminium cone mid/bass.

Frequently asked questions

Last updated: Gennaio 19, 2023 02:00. Revision #844

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.