Verity-audio Rocco User Manual download pdf (Page 8)

ROCCO OWNER’S GUIDE

V.01 February, 1

, 2004

VERITY AUDIO PAGE 8

the 12-inch woofer drivers should be near a boundary. Stiff

walls may allow closer proximity. Make sure the spikes are

properly installed. For home-theater systems, complete your

preamplifier/processors setup.

Once your system has been properly installed and adjusted,

should the bass sound muddy or boomy, try to move the

subwoofer twelve inches toward the room center. Readjust

your setup and repeat until you get a good performance.

While keeping the same distance with the rear or front wall,

you can also move the subwoofer step-by-step away from the

side wall. It should change the bass tonal balance without

lowering the bass strength.

Your Rocco subwoofer is a refine audio product that will

highly benefit from the care and attention invested in the setup.

We recommend starting with the above recommendations. The

more familiar you will get with your Rocco and its integration

with your system, the more you will develop the knowledge

and skills to better optimize your system. Your efforts will be

rewarded in creating an awe-inspiring performance.

Room Acoustics

A listening room should always be considered as an inherent

and inclusive part of any performing sound system. It is a

complex and high-order variable that has significant influence

in the overall sonic performance. The acoustic behaving of a

listening room is even more critical for low frequencies.

A room dimension sustains and reinforces a fundamental

frequency or harmonics that correspond to wavelength

multiples. Because of its length, width and height, a listening

room will exhibit several modes related to multiple dimension

combinations. It is a good practice to select room dimensions

that scatters apart the room modes. As an example, a cubic

room would create the worst conditions, as all dimensions are

equal. Acoustically, the role of a room would be to neither

cancel nor reinforce any frequency. However, most rooms will

do it in some degree. The idea is to properly control your room

by using different treatment tools.

The following definitions may be useful to identify some room

acoustic behaving:

A flutter echo is a rapid (usually regular) succession of

reflected pulses resulting from a single pulse. They can be

easily identified by tapping your hands while walking in the

room. They are frequently located at the ceiling corners or at

the center of the ceiling-wall intersections.

The room reverberation is a tendency for room sound level to

persist after direct sound ceases. The optimum reverberation

time for a room depends upon room volume, sound frequency,

and the type of sound or reproduced music.

Standing waves are reflections from opposing parallel surfaces

resulting in serious peaks in the reverberation-time / frequency

curve. In properly proportioned rooms, resonances can be

effectively reduced and standing waves practically eliminated

by introducing numerous sound treatment devices. The object

is to prevent sound reflection back to the point of origin until

after several reflections and/or after being considerably

attenuated.

Early reflections are the first sound reflections heard at the

listening position. They are usually intense and annoying. In

order of importance, they usually come from the floor, the side

walls and the ceiling. They can either be controlled by placing

diffusors or absorbers at their image location.

If one of the above phenomenons is prominent, please consult

your dealer to get proper assistance.

Multichannel

It has long been a practice for audio enthusiasts to connect a

stereo system with a television to get a better sonic

performance. From the late 70's to the early 80's two new

home-movie formats became widely available: VCR and

laserdisc. Meanwhile, TV sets got better definition and larger

screens. By 1985, both formats were improved by the

introduction of higher quality audio-video sources. But the real

surround sound as found in large theaters was not yet

available. The format density was not high enough to encode

the surround information until the DVD format was released.

Lately, SACD and DVD-A formats were lunched to offer high-

resolution stereo and multi-channel audio. A multi-channel

system designed for high-resolution audio will be excellent for

music as well as movies.

A surround sound system is dependant on complex room and

acoustic parameters. We recommend that you consult your

Verity Audio dealer to get proper recommendations and

assistance. Verity Audio dealers were carefully selected to give

you the best support.

Your Rocco subwoofer was designed to perfectly match with

the Verity Audio Tamino loudspeaker line. You will also get

outstanding results combining it with Fidelio and Parsifal. Each

piece of a multi-channel system can be purchase separately.

Take your time and buy quality components.

Following, is a brief nomenclature that outlines important

points and specifications to be considered for each of the

surround system loudspeakers.

Mains: The mains are the front left and right speakers. For

home-theater, they mostly reproduce music and surround

information. If you plan to use them also for stereo or multi-

cannel music playback, they should be high-quality. A good

practice is to use mains that go below 80Hz and reach 105 dB

SPL.

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Verity-audio Rocco User Manual Page 8

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