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9

- Insert Points Connection

4.3 Rack Mounting

- In Line Connection

For these applications the EQU 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 examples
below for your particular connection.

Send

Return

Tip

Ring

Sleeve

1/4" TRS insert

Insert Leads

21

3

1

2

3

TIP RING SLEEVE

TIP RING SLEEVE

SLEEVE TIP

SLEEVE RING TIP

TIP RING SLEEVE

Centre (Send)

Screen

Centre (Return)

Screen

Tip

Ring

Sleeve

Tip (Send)

Sleeve

Sleeve

Tip

Ring

Sleeve

1

2 (Send)

3

1

2 (Return)

3

Tip

Ring

Sleeve

Tip (Return)

If you are connecting to a mixing console's main inserts, you may have a single TRS jack for SEND & RETURN,
in this case, use an insert "Y" cable that configured like the examples below.

The most secure mounting is on a universal rack shelf available from various rack manufactures or your music
dealer. The EQU Series fits into one standard 19" rack unit of space, but the EQU131 and EQU215 will be 1H
height, the EQU231TWIN will be 4H height, while the other four models: EQU2215, EQU131VU, EQU231VU and
EQU231LED will be 2H height. Please allow at least an additional 4" depth for the connectors on the rear panel.
Be sure that there is enough air space around the unit for sufficient ventilation and please do not place the EQU
Series on high temperature devices such as power amplifiers etc. to avoid overheating.

Tip

Ring

Sleeve

Tip
Ring

Sleeve

Tip

Sleeve

Tip

Sleeve

Tip

Sleeve

Cent e

r

Cent e

r

Centre

Screen

Screen

Screen

1

2
3

Tip

Ring

Sleeve

1

2

3

1
2
3

TIP SLEEVE

TIP SLEEVE

TIP RING SLEEVE

TIP RING SLEEVE

1

2

3

2

1

3

2

1

3

Tip

Ring

Sleeve

Tip
Ring

Sleeve

Tip

Ring

Sleeve

1

2

3

1
2

3

1
2
3

Tip

Ring

Sleeve

1
2
3

Tip

Sleeve

1
2
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

Summary of Contents for EQU Series

Page 1: ...EQU Series LTO R www altoproaudio com Version 2 0 Dec 2002 English 15 31 Band Graphic Equalizer User s Manual...

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...

Page 3: ...DIO 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 pro...

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 Conso...

Page 5: ...25 20 31 Band Graphic Equalizer ON OFF 12 LTO R POWER 0 0dB 17 12 6 12 6 POWER EQU215 25 40 63 100 160 250 400 630 1K 1 6K 2 5K 4K 6 3K 10K 16K LEVEL Channel One 25 40 63 100 160 250 400 630 1K 1 6K...

Page 6: ...TO R EQU231VU Front Panel 1 2 10 14 Channel One Channel Two 20 31 5 50 100 200 500 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 LEVEL BY PASS RAN...

Page 7: ...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 el...

Page 8: ...LACE FUSE AS MARKED T U V Rheinla n d o f N o rth America I n c C US Rheinland Production inspected IN IN SERIAL MODEL EQU2215 Rear Panel 19 20 18 17 16 15 17 16 15 7 GND LIFT OUT IN UNBALANCED OUT IN...

Page 9: ...tage pull the fuse holder out rotate it 180 and push it back again The operating voltage will be indicated by one of the two triangular markers XLR Type Unbalanced Pin3 Pin2 Pin1 Linked to Pin1 manual...

Page 10: ...ailable from various rack manufactures or your music dealer The EQU Series fits into one standard 19 rack unit of space but the EQU131 and EQU215 will be 1H height the EQU231TWIN will be 4H height whi...

Page 11: ...Violin 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 5...

Page 12: ...100 200 500 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 LEVEL 12 12 6 6 LTO R From line instrument outputs To power amplifier inputs CH1 IN CH2...

Page 13: ...ed button type 16KHz 12dB oct fixed button type 20Hz to 50KHz at 3dB 0 02 1KHz all VR at middle position 93dB 1KHz 110V 120VAC 60Hz 220V 240VAC 50Hz 1 31 band 1 3 octave ISO spacing 7W 2 15 band 2 3 o...

Page 14: ...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...

Page 15: ...l rights reserved to ALTO Mobile Due to continued development in response to customer feedback product features specifications and or internal external design may be changed without prior notice No ph...

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