Table of Contents
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Table of Contents
Related Manuals for JAMO D 4 Concept
Summary of Contents for JAMO D 4 Concept
- Page 1 Technical Description Jamo D 4 Concept...
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Page 2: Table Of Contents
1. General system description 2. The products: 2.1. D 400 2.2. D 430 2.3. D 450 2.4. D 4CEN 2.5. D 4SUB 3. Driver explanation 3.1. Tweeter 3.2. Mid-woofer/woofer 3.3. (Sub) woofer 4. Electronics (D 4SUB) 5. Cabinets Jamo D 4 Concept Page... -
Page 3: General System Description
General description With the Jamo D 4 Concept the goal was to create “the link” between high-end hifi and - surround sound and at the same time focussing on versatility – or flexibility – in system configuration and placement. So, what are the “problem areas” in doing that? Well, it could be extended treble response “demanded “... -
Page 4: D 430
D 430 is a 2 way bass reflex system featuring a 6½” woofer and a 1” DCD tweeter. This compact bookshelf speaker can be placed on a bookshelf – or on the designated D 4FS stand – providing a very stable placing at the correct listening height. -
Page 5: D 450
6½” mid-woofer and a 1” DCD tweeter. The 2½ way configuration has sort of become a hallmark of Jamo. We are using this configuration in a number of products starting with our highly acclaimed D 870 speaker. The reason for choosing this configuration is that it grants you the best of two worlds: The tweeter and mid-woofer reproduce the full frequency range, so, this 2 way system is “securing”... -
Page 6: D 4Cen
Thanks to the heavy MDF board cabinet, the powerful amplifier, and the specially developed woofers, the D 4SUB delivers a deep, precise and detailed reproduction of the low register - perfectly matching the sound from the D 4 front speakers. Actually, you would probably expect that in order to obtain optimum timbre matching between centre and front speaker you need to use the same size of driver. - Page 7 As mentioned the D 4SUB goes very low in order to reproduce the extreme bass contents of movie soundtracks with full authority. However, under certain circumstances this can create a problem, which is why some decoders feature a Boundary Gain Compensation filter. filter compensates for the room influence at low This frequencies, as any room amplifies the lowest frequencies.
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Page 8: Tweeter
Drivers Tweeter The tweeter in the D 4 range, has already been well acclaimed in Jamo products, as it is used in the Jamo D 7 THX Ultra2 system, winner of the EISA award as “High-end Home Theatre 2002/2003”. However, to suit the exact purpose in D 4, we developed a new, asymmetric front baffle. -
Page 9: Mid-Woofer/Woofer
Mid-woofer/woofer The woofer of the D 4 speakers features a brand new wood fibre cone. This unique cone is made from wood fibre material, characterized by very uneven fibres with different resonance properties. And thus, when these fibres are pressed into shape to form a loudspeaker cone, the different fibres will prevent each other from vibrating. - Page 10 However, the anodised aluminium centre plug is probably the most conspicuous feature of the D 4 woofers. It replaces the traditional dust cap in the centre of the loudspeaker cone at the place where the dust cap would normally be mounted - thereby making the cone lighter and thus faster.
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Page 11: Sub) Woofer
The D 4SUB features a 400 Watt Class D amplifier that operates at a highly efficient 85%. This means that 85% of the power consumption is dedicated to the speaker, and only 15% is dissipated as heat. It is manufactured from SMD components. The... -
Page 12: Cabinets
Cabinets All D 4 cabinets are made of heavy MDF board, a solid and resonance dead base for the drivers to work in. However, the most remarkable cabinet feature is probably the Double Curved front baffle. It is common knowledge that one of the most rigid constructions at all is a round shape;...