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1. INTRODUCTION

Congratulations on your purchase of a  ALTAIR graphic equaliser. Our dilated experi-

ence in the design and manufacture of low signal equipment culminate with the presentation
of this new generation of graphic equalisers.

There is a lot of characteristics that makes  the ALTAIR graphic equalisers, one of the

most highlighted on the audio professional market, here follows some of them:

Constant  (Q) design

The constant bandwidth (Q) allows a greater control in the band adjustment, since the

filter affects to the same portion of band independently of the frequency and/or gain
adjustment.

Equalisation range selector

The equalisation range selector allows to setup the filters gain/attenuation range

between ±6 and ±12 dB, which allows a greater precision in the equaliser adjustment.

 FFS  Feedback finder system (only EQ-230)

Each band has a LED indicator on each fader, by means of which the equaliser

indicated the band where it find the feedback. This system helps to the sound technician in the
soundcheck, to find the bands sensitive to produce feedbacks.

Parametric/notch filter in each channel (only EQ-230)

The parametric filter  allows a point of equalisation in each channel, in which the user

can setup the frequency, the gain and the bandwidth (Q). In its minimum bandwidth (Q)
position it becomes a notch filter, is to say a filter that allows to eliminate feedbacks or an
annoying 50-60 stage hum,  removing the minimum amount of frequency response.

Naturally, you want to use your graphic equaliser soon, but  first, it is important that you

read this manual. This manual help you to install and use your new graphic equaliser properly.
It is very important that you read it carefully, mainly the paragraphs marked as NOTE, CAUTION
and DANGER, for your security

Save the original packing for the future, so you could use it to transport the graphic

equaliser

. NEVER SHIP THE GRAPHIC EQUALISER WITHOUT IT'S ORIGINAL PACKING.

3

ALTAiR

EQ-215/230  GRAPHIC ECUALISERS

Содержание EQ-215

Страница 1: ...LISERS OWNERS MANUAL EQ 215 230 ALTAiR issue 1 0 May 98 34 91 8043265 34 91 8044358 altair altairaudio com www altairaudio com EQUIPOS EUROPEOS ELECTR NICOS S A L AVDA DE LA INDUSTRIA 50 28760 TRES CA...

Страница 2: ...ED INPUT 9 OUTPUT CONNECTION 10 UNBALANCED OUTPUT 10 BALANCED OUTPUT 11 GROUND LINK 11 5 OPERATION 11 TURN ON DELAY CIRCUIT 12 LEVEL CONTROL 12 SIGNAL AND OVERLOAD INDICATOR 12 HIGH PASS FILTER CONTRO...

Страница 3: ...ans of which the equaliser indicated the band where it find the feedback This system helps to the sound technician in the soundcheck to find the bands sensitive to produce feedbacks Parametric notch f...

Страница 4: ...on of each item appears in the corresponding section EQ 215 FRONT PANEL EQ 230 FRONT PANEL LEVEL CONTROL HIGH PASS FILTER CONTROL SIGNAL AND OVERLOAD INDICATOR BYPASS SWITCH WITH INDICATOR LED RANGE S...

Страница 5: ...L EQ 230 REAR PANEL VOLTAGE SELECTOR MAINS CONNECTOR AND FUSE HOLDER FADER STATUS SETUP SWITCH EARTH LINK SWITCH OUTPUT SIGNAL CONNECTOR XLR 3 32 INPUT SIGNAL CONNECTOR XLR 3 31 5 ALTAiR EQ 215 230 GR...

Страница 6: ...by qualified personnel when The power supply cord plug is damaged Any object have fallen or liquid has been spilled into the equaliser The unit does not appear to operate properly The enclosure is da...

Страница 7: ...240 VAC 50 60 Hz Make sure that the graphic equaliser unit is disconnected from the mains The mains connector and fuse holder is paced at the graphic equaliser rear panel The fuse holder is a box loca...

Страница 8: ...mains voltage and the fuse ratings are correct INPUT CONNECTION The graphic equaliser input signal is carried out through two XLR 3 31 female connec tors one per channel The input connections are bala...

Страница 9: ...g sound source Close Ground referenced sound source Open Floating sound source Close Ground referenced sound source Open SOUND SOURCE Floating sound source Close Ground referenced sound source Open SO...

Страница 10: ...has a mains plug of this form or when it is lifted the electrical ground of the unit from the earth mains is to say with the EARTH LINK switch in OFF position UNBALANCED OUTPUT This type of connection...

Страница 11: ...ot defeated For this circumstance NEVER lift the mains earth AC ground to avoid possible accidents For your security NEVER use ground isolator adapters instead it is recommended the EARTH LINK switch...

Страница 12: ...panel This multipoint level circuit indicates the highest level reached inside the equaliser circuits and warns the operator about possible problems When the level indicator lights green the internal...

Страница 13: ...have a variation range between 12 dB and the corresponding 12 LED remain light ing When this switch is pressed the band pass filters have a variation range between 6 dB and the corresponding 6 LED rem...

Страница 14: ...enient disable it with this switch instead of to put the gain control in the 0 dB position since avoid the signal pass by the parametric filter circuit with the resulting improvement in the graphic eq...

Страница 15: ...Graphic equaliser model EQ 230 with different enhancements at 1KHz 15 ALTAiR EQ 215 230 GRAPHIC ECUALISERS Graphic equaliser EQ 230 response curve with each one of its band enhanced at 12 dB...

Страница 16: ...ect and the same happens to the sound systems and even if we had a perfect speaker the room in which we are going to work is nor perfect either because the floor the walls and the ceiling are not abso...

Страница 17: ...els If the total curve of the equalization system is not right the listening fatigue will indicate that you have not finished yet You have to give some more tries to leave it well To end you need to k...

Страница 18: ...18 ALTAiR EQ 215 230 GRAPHIC ECUALISERS...

Страница 19: ...ustable between 0 5 and 10 CHANNELSEPARATION Greater than 75 dB 20Hz 20KHz GAIN ATTENUATION 6 dB Level control by calibrated rotatory potentiometer DISTORTION Less than 0 01 at 0 dBu 20 Hz 20 KHz MAXI...

Страница 20: ...on Parametric filter setup at 1 KHz with different gains and Q bandwidth 20 ALTAiR EQ 215 230 GRAPHIC ECUALISERS High pass filter at 10 30 100 and 300 Hz Channelseparation Typical common mode relation...

Страница 21: ...arranty expressed or implicir Any faulty unit must be sent to the dealer or the manufacturer The serial number of the unit must be included with any request for the technical service Equipos Europeos...

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