Jamo E-7 Brochure

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Technical Description

Jamo E 7 system

Version 1.0

Technical Description

Jamo E 7 System

Contents:

Page

1. General system description

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2. The products:

 

2.1. E 700

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2.2. E 750

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2.3. E 770

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2.4. E 7CEN

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2.5. E 7SUB

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3. Driver explanation

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3.1. Tweeter

3.2. Midrange/Woofers

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3.3. (Sub) woofer

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4. Cabinets

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5. Technical specifications

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Jamo E-7 Brochure
Wooden front baffle
Difference between vibrations in a normal front baffle and vibrations in a front baffle employing Decoupled Tweeter technology.

1. General description

The goal with our new E 7 series loudspeakers has been to bring audiophile quality loudspeaker technology to the mass market. Furthermore our requirement from the start has been that this new series should perform equally well with music as movies and have the eye pleasing aesthetics that allow most people to integrate these loudspeakers in their everyday living rooms without sacrificing their interior decor. A task that proved to require new and ingenious solutions as well as ground breaking technology from our EISA award winning D 7 series.

These are loudspeakers designed by engineers with a passion for music in all its forms. Anybody who listens to these designs will hear that. We wanted this new range to exceed all sonic expectations in the class… we think that’s exactly what it does.

One of the biggest challenges when designing speakers is preventing unwanted cabinet vibrations from clouding or colouring the sound. High frequencies are particularly susceptible so we came up with the first ingenious solution… Decoupled Tweeter Technology (DTT).

Exploded view of the Decoupled Tweeter Technology.

By decoupling the tweeter from the rest of the

loudspeaker, vibrations transmitted from the front baffle to the tweeter are reduced by more than 20 dB resulting in

an uncommonly detailed and realistic reproduction of high frequencies.

Firstly the tweeter is decoupled from the aluminium front baffle using a special rubber compound called EPDM (Ethylene Propylene Diene Monomer) which has extremely good acoustical properties. Secondly the aluminium front baffle is not just screwed onto the wooden front baffle but mounted using natural rubber rawlplugs which further prevents vibrations being transmitted.

The loudspeaker cabinets themselves are constructed from solid MDF and the front baffle is angled by 2 degrees in order to further enhance the rigidity of the cabinets. The two floorstanding models in the range also have internal bracings adding further to the structural stiffness of the whole construction. Please refer to section 4 for more information about the cabinets.

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