AXYS H90 Panduan Instalasi - Halaman 8

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MECHANICAL INSTALLATION

Acoustic Centre

Mounting an Intellivox ADC loudspeaker is a straight-

forward procedure, but it is essential to understand that the

precise mounting location is extremely critical. The correct

mounting location is defined as part of the acoustical

design process and the installer should make sure that

he/she has this information before commencing to mount

the Intellivox ADC.

MODEL V90 ONLY

The correct operational height defined by the system

designer is the height of the Intellivox ADC's acoustic

centre. This point does not necessarily coincide with the

position of any particular physical component on the

unit. The location of the speaker's acoustic centre is

marked by the centre of the yellow sticker on the front

face of the unit at the time of shipping, and it is this

position that must correspond to the operational height

defined in the design process.

The vertical position of the acoustic centre of the Model

V90 is towards the top of the unit, as indicated by the

yellow sticker (see fig.3). The horizontal position is on

the vertical centre line.

When calculating the positions for the mountings (see

below), the distance from the acoustic centre to the top

or bottom of the loudspeaker (whichever is being used as

the reference datum) should be measured and then

allowed for when marking the mounting positions. The

specification sheet supplied with each loudspeaker

includes a mechanical drawing clearly showing the

mounting position locations.

The V90 will normally be mounted perpendicular to the

listening plane, i.e. vertically when the floor is a

conventional horizontal plane. However, if the DDA

investigation has specified a downward angle for some

reason, this angle must be adhered to in the mounting

process. This is likely to necessitate the use of spacers on

the upper mounting bracket.

fig.3 Sticker showing acoustic centre and unit orientation

Because of the tightly-controlled vertical radiation

pattern of the V90, a small deviation from the calculated

acoustical mounting height or vertical mounting angle

may cause severe degradation of the expected

performance.

Note also that the yellow sticker indicates which way is

"up"; ensure that this orientation is observed.

fig.4.1 Acoustic centre reference point for V90

AXYS

Intellivox ADC Installation Manual

Reference point for

acoustical mounting

height - V90

200905/ADCIM_v1.0