AXYS H90 Kurulum Kılavuzu - Sayfa 13

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AXYS

Intellivox ADC Installation Manual

CORRECTION EQ

Many building PA systems will include some provision for

equalisation (EQ) adjustment at the signal processing stage,

or within the power amplifier (as with the AXYS

PB-800 amplifiers). Adjusting EQ to achieve maximum system

intelligibility is a normal part of the commissioning process,

though it should be noted that measured intelligibility will

be greatly affected by several other factors not immediately

under the deisgner's control, such as reverberation time and

ambient noise levels. If external EQ adjustment is not

available, it may be desirable in some applications to modify

the HF response of the loudspeaker itself.

The HF response is altered by repositioning a pcb jumper.

The jumper may be accessed by removing the driver shown

in fig 10.1.

The factory default setting is with jumper towards white

power resistors (rear of enclosure). This enables the internal

correction EQ. The jumper setting towards the front disables

the correction EQ. Note that reducing the HF response may

have the effect of making the unit sound slightly dull, and

the appropriate setting will be determined by trial.

H90

fig.10.1 - Jumper location

200905/ADCIM_v1.0

SECURING THE FRONT GRILLE

Option 1. After making the connections and setting the

power tapping, the front grille may be replaced. Do not

PB-400 and

replace the protective foam! Align the four locating spigots

with the four larger holes in the back of the grille frame

and push the grille back on, ensuring that all four spigots

locate positively with the retaining clips within the holes.

Option 2. If wished, the front grille may be secured more

permanently with the (supplied) M4 security screws. These

need to be fitted one at a time before replacing the grille.

REAR OF

GRILLE

fig.11 - Securing the front grille

Insert a screw through the larger hole in the corner of the

grille rear flange by feeding it from the inside of the flange,

so that the thread of the screw protrudes from the rear of

the grille. Push a retaining washer (supplied with the

screws) over the screw thread, and up against the

V90

metalwork to retain the screw in position. Repeat for the

other three corners.

Push the grille into place using the locating spigots as

previously described. Insert the hex key supplied through

holes in the grille itself to tighten the security screws into

the M4 tapped holes.

fig.10.2 - Correction EQ

HOLE FOR

SECURITY SCREW

LOCATING HOLE

WITH RETAINING CLIP

M4 TAPPED HOLE

FRONT OF

SPEAKER

LOCATING SPIGOT