background image

AC INPUT
95-120V

/210-240V

60-50Hz

Rated Power Consumption 9W

FUSE:
210-240V: T100mAL 250VAC
95-120V: T160mAL 250VAC
REPLACE FUSE WITH CORRECT
TYPE ONLY

Apparaten skall anslutas till
jordat uttag nar den ansluts
till ett natverk

GND

LIFT

ON

OFF

POWER

BALANCED

UNBALANCED

TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1

OUTPUT

BALANCED

UNBALANCED

TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1

INPUT

CHANNEL 1

BALANCED

UNBALANCED

TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1

OUTPUT

BALANCED

UNBALANCED

TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1

INPUT

CHANNEL 2

PUSH

2

1

3

NEW

TIDE

PUSH

2

1

3

NEW

TIDE

GND

LIFT

SERIAL

MODEL

ON

OFF

POWER

AC INPUT
95-120V

/210-240V

60-50Hz

Rated Power Consumption 9W

FUSE:
210-240V: T100mAL 250VAC
95-120V: T160mAL 250VAC
REPLACE FUSE WITH CORRECT
TYPE ONLY

Apparaten skall anslutas till
jordat uttag nar den ansluts
till ett natverk

BALANCED

UNBALANCED

TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1

INPUT

BALANCED

UNBALANCED

TIP/PIN 2
RING/PIN 3
SLEEVE/PIN 1

OUTPUT

6

3.2 The Rear Panel

MK

EQU215

Rear Panel

-

II

18

20

19

17

16

15

20

19

14

17

16

15

PUSH

2

1

3

NEW

TIDE

2.Level control

This control sets the input signal level to the equalizer. Its "0dB" position is unity gain (no boost or attenuation).
If the clip LED (5) is light continuously, turndown this control until it only flickers occasionally.

3.High pass filter

This button electronically inserts a filter into the signal path, which cuts the low frequencies at 40Hz (12dB per
octave). The LED (12) indicator lights when the button is pressed and this filter is serving in the circuit.

4.Low pass filter

This button electronically inserts a filter into the signal path, which cuts the high frequencies at 16KHz (12dB per
octave). The LED (13) indicator lights when the button is pressed and this filter is serving in the circuit.

5.Clip LED

This LED will light when any section of the equalizer is within 5 dB of clipping. Occasional flickering of this clip
LED is acceptable, but if it remains on continuously, you should turn down the level control or reduce the output
level of the preceding component to avoid audible distortion.

11.VU meter

This VU meter is used to indicate the output level.

12.High pass LED

When the High pass filter (40Hz/12dB) is in active, this LED will light.

13.Low pass LED

When the Low pass filter (16KHz/12dB) is in active, this LED will light.

8.EQ LED

When this LED lights, it is in EQ mode.

9.Range switch

This button switches the gain range of the filter potentiometer between 6dB and 12dB.

10.Filter range indicator

When the 6dB range is selected, green LED will light. When the 12dB range is selected, red LED will light.

7.EQ switch

This switch inserts or removes the equalizer to channel path. If press this switch, the EQ LED (7) will be illuminated,
which means it is in EQ mode. When release this switch, the input signal is routed directly to the output jacks.
which means it is in bypass mode.

6.Signal LED

This green LED will light when any signal appears at input/output stage.

18

17

15

16

II

EQU131-

Panel

MK Rear

14

17

16

15

Summary of Contents for EQU MK II Series

Page 1: ... 25K 2 5K 6 3K 12 5K 25 40 80 160 400 1K 2K 5K 10K 63 125 315 800 250 630 1 6K 4K 3 15K 8K 16K 20K 20 12 31 Band Graphic Equalizer INPUT OUTPUT SIG CLIP SIG CLIP RANGE EQ HI PASS 6 12 ON 16KHz 40Hz LOW PASS 6 6 R LTO OUTPUT POWER OUTPUT LTO R EQU MK Series User s Manual LTO R www altoproaudio com Version 1 3 April 2005 English ...

Page 2: ... to qualified service personnel only Do not perform any servicing other than those instructions contained within the User s Manual When required either blow off dust from the product or use a dry cloth Do not use any solvents such as Benzol or Alcohol For safety keep product clean and free from dust If the plug does not fit your AC outlet seek advice from a qualified electrician To avoid the risk ...

Page 3: ...UDIO TEAM and the one confirming the quality of our job we would like to share with you our work and our dreams pay attention to your suggestions and your comments Following this idea we create our products and we will create the new ones From our side we guarantee you and we will guarantee you also in future the best quality and the best fruits of our continuous researches and the best prices Our...

Page 4: ... INSTALLATION CONNECTION 8 4 1 Mains Connection 4 2 Audio Connection 4 3 Rack Mounting 5 APPLICATION 10 5 1 The Sound Frequency 5 2 Equalizer In Sound Reinforcement Systems Line Instrument Mixing Console 6 TECHNICAL SPECIFICATIONS 12 7 WARRANTY 13 3 Wiring Configuration In Line Connection Insert Points Connection ...

Page 5: ...llation in standard 19 rack space Manufactured Under QS9000 VDA6 1 certified management system 3 CONTROL ELEMENTS 3 1 The Front Panel 1 2 3 4 5 6 9 13 1 1 Thank you very much for expressing your confidence in LTO products by purchasing our EQU MKII Series Graphic Equalizers With the EQU you have acquired an extremely musical and flexible Graphic Equalizer The high end EQU MKII Series Graphic Equal...

Page 6: ...5 50 100 200 2 5K 6 3K 12 5K 25 40 80 160 2K 5K 10K 63 125 315 250 1 6K 4K 3 15K 8K 16K 20K INPUT LEVEL 500 1 25K 400 1K 800 630 Channel One Channel Two 0 12 12 0dB 12 12 6 6 SIG CLIP INPUT OUTPUT SIG CLIP 6 12 ON 16KHz 40Hz SIG CLIP RANGE EQ LOW PASS HI PASS R LTO Dual 31 Band Graphic Equalizer EQ INPUT LEVEL INPUT LEVEL Channel One Channel Two 20 31 5 50 100 200 500 1 25K 2 5K 6 3K 12 5K 25 40 8...

Page 7: ...s at 40Hz 12dB per octave The LED 12 indicator lights when the button is pressed and this filter is serving in the circuit 4 Low pass filter This button electronically inserts a filter into the signal path which cuts the high frequencies at 16KHz 12dB per octave The LED 13 indicator lights when the button is pressed and this filter is serving in the circuit 5 Clip LED This LED will light when any ...

Page 8: ...50VAC REPLACE FUSE WITH CORRECT TYPE ONLY Apparaten skall anslutas till jordat uttag nar den ansluts till ett natverk BALANCED UNBALANCED TIP PIN 2 RING PIN 3 SLEEVE PIN 1 INPUT BALANCED UNBALANCED TIP PIN 2 RING PIN 3 SLEEVE PIN 1 OUTPUT PUSH 2 1 3 NEW TIDE 14 14 17 16 15 GND LIFT SERIAL MODEL ON OFF POWER AC INPUT 95 120V 210 240V 60 50Hz Rated Power Consumption 18W FUSE 210 240V T100mAL 250VAC ...

Page 9: ...lease refer to 4 2 audio connection You must be sure of the Voltage available in your country because this is a Dual Voltage unit Voltage opera tion can be changed through the fuse protecting the power supply but this operation must be performed by a qualified engineer Either the 1 4 TRS phone jack or the XLR connector can be wired in balanced and unbalanced modes which will be determined by the a...

Page 10: ... 3 TIP RING SLEEVE TIP RING SLEEVE TIP SLEEVE SLEEVE RING TIP Unbalanced TIP RING SLEEVE Balanced 2 1 3 1 2 3 1 2 3 1 2 3 1 2 3 SLEEVE TIP SLEEVE RING TIP For these applications the EQU MKII Series Graphic Equalizer provides 1 4 TRS connectors XLR connectors and RCA connectors to easily interface with most any professional audio device Follow the configuration exam ples below for your particular c...

Page 11: ...lin Viola Cello Double Bass Guitar KEYBOARDS Pianoforte Organ PERCUSSION Celesta Timpani Xylophone FREQUENCY 25 31 40 50 62 80 100 125 160 200 250 320 400 500 640 800 1K 1 3K1 6K 2K 2 5K 3 1K 4K 5K 6 2K 8K 10K 13K 16K 20K Mid C 10 5 APPLICATION 5 1 The Sound Frequency Typical Frequency of Each Instrument and Voice In recording studios as well as stage or radio plays the EQU MKII Series Graphic Equ...

Page 12: ...Graphic Equalizer can be used on an entire mix In line between a instrument outputs and a power amplifier and this is the basic application in the PA system to offer precise equalization control The EQU MKII Series Graphic Equalizer can also be used on a single instrument by connecting to a mixing console s main inserts esp for those consoles without built in equalization circuitry INPUT LEVEL INP...

Page 13: ...t fixed button type 20Hz to 50KHz at 1 5dBu 0 01 1KHz all VR at middle position 110dB 95V 120VAC 60Hz 220V 240VAC 50Hz 60Hz 2 31 band 1 3 octave ISO spacing 18W 2 31 band 1 3 octave ISO spacing 18W 2 31 band 1 3 octave ISO spacing 18W 1 31 band 1 3 octave ISO spacing 9W 1 31 band 1 3 octave ISO spacing 9W 2 15 band 1 3 octave ISO spacing 9W 2 15 band 1 3 octave ISO spacing 9W 483 W 220 D 44 H 19 8...

Page 14: ...d LTO of 1 year from the purchase date if you have completed the Warranty Registration Card in time 3 3 During the warranty service may repair or replace this product at its own option at no charge to you for LTO parts or for labor in accordance with the right side of this limited warranty 3 4 This warranty does not apply to the damages to this product that occurred as the following conditions Nor...

Page 15: ...2 22621603 email info altoproaudio com cn Fax 852 27550223 All rights reserved to ALTO All features and content might be changed without prior notice Any photocopy translation or reproduction of part of this manual without written permission is forbidden Copyright 2005 ALTO CHINA LIMITED http www altoproaudio com cn ...

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