Alto PA MONITOR PROCESSOR User Manual Download Page 5

3. CONTROL ELEMENTS

SPO

TLIGHT

3. CONTROL ELEMENTS

3

9 INVERTER Switch

Engage this switch to reverse the audio signal's phase by 180 . In this case, it
may alter the audio phase to compensate for phase cancellation. The next LED
will display whether the function is active or not.

10 MODE Switch (LOW-CUT Filter Section)

Engage this switch to insert the Low-Cut filter into signal path, and the next
LED (green) will illuminate. When this switch is in bypass mode, the Low-Cut
filter will be bypassed.

11 MODE Switch (NOTCH Filter Section)

By engaging this switch, you will insert the Notch filter into the signal path,
and the next LED (green) will illuminate. When this switch is in bypass mode,
the Notch filter will be bypassed.

12 1/ 10 Selection Switch

This switch is used to change the selected range of the frequency. Engage the
switch ( 1), the adjustable frequency range goes from 40 Hz~400 Hz (Notch1)
or 200 Hz~2k Hz (Notch2), and the next LED will illuminate. Otherwise, engage
the switch ( 10), and the adjustable frequency range goes from 400 Hz~4k Hz
(Notch1) or 2k Hz~20k Hz (Notch2).

13 FREQUENCY Control (Notch Filter Section)

This control provides two frequency ranges. For the details, please refer to the
above. Rotate this knob to control the howling resonance frequency response
at room.

14 DEPTH Control

Rotate this control to adjust the variation, which can be varied from 0 dB to
-20 dB.

15 MASTER VOL. Control

Rotate this knob to attenuate or boost the output level, which can be varied
from -

to +6 dB.

16 OUTPUT LEVEL Meter

The meter displays the output level, and the range is from -24 dB to +18 dB.

Through this control, you can select the frequency that you want to cut off, the
adjustable range goes from 15 Hz to 360 Hz.

8 FREQUENCY Control

6

3. CONTROL ELEMENTS

5. INSTALLATION AND CONNECTION

Strain Clamp

Sleeve

Tip

Ring

Sleeve=Ground/Screen

Ring=Return Signal

Tip=Send Signal

Use for Insert Points

1/4" Stereo (TRS) Jack Plug

2=Hot(+)

3=Cold(-)

1=Ground/Screen

(seen from soldering side)

Use for Balanced Mic Inputs

(For unbalanced use, connect pin 1 to 3)

3-pin XLR Male Plug

2=Hot(+)

3=Cold(-)

1=Ground/Screen

3-pin XLR Line Socket

(seen from soldering side)

1

2

3

1

2

3

Use for Main output

(For unbalanced use, leave pin3 unconnected)

Insert Leads

21

3

1

2

3

TIP RING SLEEVE

Tip

Ring

Sleeve

1

2 (Send)

3

1

2 (Return)

3

TIP RING SLEEVE

Centre (Send)

Screen

Centre (Return)

Screen

Tip

Ring

Sleeve

SLEEVE TIP

SLEEVE RING TIP

TIP RING SLEEVE

Tip

Ring

Sleeve

Tip (Send)

Sleeve

Sleeve

Tip (Return)

The most secure mounting is on a universal rack shelf available from various
rack manufacturers or your music dealer. The

PA Monitor Processor

fits into one standard 19" rack unit of space. Be sure that there is enough
air space around the unit for sufficient ventilation and please do not place
the

Monitor PA/Monitor Processor on high temperature devices such

as power amplifiers etc. to avoid overheating.

LTO

LTO

5.3 Rack Mounting

Summary of Contents for PA MONITOR PROCESSOR

Page 1: ...notice Any photocopy translation or reproduction of part of this manual without written permission is forbidden Copyright 2007 Seikaku Group SEIKAKU TECHNICAL GROUP LIMITED NO 1 Lane 17 Sec 2 Han Shi West Road Taichung 40151 Taiwan http www altoproaudio com Tel 886 4 22313737 email alto altoproaudio com Fax 886 4 22346757 PA MONITOR PROCESSOR ALTO MONITOR ...

Page 2: ...o not perform any servicing other than those instructions contained within the User s Manual To prevent fire and damage to the product use only the recommended fuse type as indicated in this manual Do not short circuit the fuse holder Before replacing the fuse make sure that the product is OFF and disconnected from the AC outlet HOURS X DAY EXAMPLE 8 6 4 3 2 1 5 1 0 5 0 25 or less SPL 90 92 95 97 ...

Page 3: ...L 250VAC Physical Dimension W D H 483 194 1 44 mm U K Australia 240 VAC 50 Hz Main connection Standard IEC receptacle Weight 2 8 Kg 1 INTRODUCTION 1 2 FEATURES 1 3 CONTROL ELEMENTS 2 4 APPLICATION 4 5 INSTALLATION CONNECTION 5 6 BLOCK DIAGRAM 7 1 INTRODUCTION 1 2 FEATURES Illuminated Power Switch Mountable in a rack unit 19 1 4 TRS type jack and balanced XLR connectors available LED Meter 8 LEDs t...

Page 4: ... be bypassed 5 HI PASS Switch Engage this switch it will cut the low frequencies at 40 Hz 12 dB per octave and the next LED green will illuminate 6 LOW PASS Switch Engage this switch it will cut the high frequencies at 16k Hz 12 dB per octave and the next LED green will illuminate 7 RANGE Switch This switch is used to choose the gain range of the filter potentiometer either 6 dB or 12 dB Up for 6 ...

Page 5: ...an be varied from 0 dB to 20 dB 15 MASTER VOL Control Rotate this knob to attenuate or boost the output level which can be varied from to 6 dB 16 OUTPUT LEVEL Meter The meter displays the output level and the range is from 24 dB to 18 dB Through this control you can select the frequency that you want to cut off the adjustable range goes from 15 Hz to 360 Hz 8 FREQUENCY Control 6 3 CONTROL ELEMENTS...

Page 6: ...voltage before plugging the power cord into the wall outlet use the same fuse as marked on the fuse holder at the AC power connection The mains connection of the is made by using the enclosed mains cord and a standard IEC receptacle It meets all of the international safety certification requirements LTO MONITOR LTO MONITOR 5 2 Audio Connection The presents with balanced XLR 1 4 TRS It can be inter...

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