Focal DIABLO UTOPIA COLOUR EVO Manuel D'utilisation page 9

DIABLO UTOPIA
U s e r m a n u a l
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Thank you for purchasing a Focal product. Welcome to our High-Fidelity world. Innovation, tradition, excellence and pleasure
are our values; our one and only aim is to bring you a sound that is rich, pure and true. To get the most out of your product, we
recommend that you read the instructions in this booklet, then store it in a safe place to refer to in the future.
Connections
Diablo connectors provide reliable, multi-purpose contacts for stripped cables (up to 1/8" - 4mm diameter) or fork terminals. It is
imperative that you respect the polarity of the loudspeakers. The connector marked '+' must be connected to the positive output on the
amplifier, and the connector marked '-' must be connected to the negative terminal (fig. A). Stereo image and bass perception will be
drastically compromised if these conditions are not respected.
Choosing the location
Your loudspeakers have been developed to deliver the most faithful sound reproduction, whether they are used for stereo music or home
cinema. However, a few simple rules should be followed to optimise their performance and to guarantee good tonal balance and a realistic
sound image.
The loudspeakers should be positioned symmetrically opposite the listening station, ideally so that they form an equilateral triangle with it.
You can, however, vary these distances to find the perfect compromise according to specific room layouts (fig. B).
The loudspeakers should be positioned at the same height in the same horizontal plane.
Ideally the tweeter will be positioned at the listener's ear level, at the usual listening point (fig. C).
Do not place the loudspeakers too close to a corner of the room and avoid placing them close to a wall. This will have the effect of exciting
certain resonances of the room and artificially increasing the bass level. On the other hand, if the bass level is deemed insufficient, you can
try moving the loudspeakers closer to the walls to rebalance it (fig. D).
Optimisation
For perfectionists, we provide the following optimal positioning formula:
If A is the distance between the boomer centre and the nearest partition (floor or wall), B is the intermediate distance and C is the
longest distance (A < B < C), the B
• Example:
If the boomer centre is 19
3/4
be 28 " (72cm) away (C = B
3/8
Recommendations for use
The way the loudspeakers behave depends on the listening room's acoustics, the correct positioning of the loudspeakers within
the room and the listener's location.
You can tweak each of these elements to correct or improve a desired effect.
The stereophonic perception is imprecise and poorly centred: try to move the loudspeakers closer to each other and/or point them
towards the listening point.
The sound is "harsh", aggressive: your room's acoustics are probably too reverberant. Consider using sound-absorbing materials
(rugs, sofa, wall coverings, curtains, etc.) and sound-reflecting materials (furniture) to absorb or diffuse resonance.
The sound is "flat", strangled: there are too many sound-absorbing materials in the room; the sound is soaked up and has no depth.
Aim for a better balance between the absorbent and reflective materials within your room.
In general, aim to have a reflective wall behind the loudspeakers so that the sound develops correctly. The wall behind the
listening area, meanwhile, will ideally be absorbent to prevent rear reflections from "contaminating" the perception of the stereo
image.
Furniture can be placed judiciously on the side walls to diffuse the sound waves and therefore ensure certain frequency
ranges are not excited, particularly in the midrange (suppression of "flutter echoes").
For development purposes, Focal-JMlab reserves the right to modify the technical specifications of its products without prior notice.
= AC relationships defines the ideal position for the loudspeaker (fig. E).
2
" (50cm) from the rear wall (A) and 23
/A = 28 ").
2 3/8
Non-contractual images.
COLOUR EVO
®
" (60cm) from the floor (B), then the side wall will ideally
5/8
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