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SAFETY RELATED SYMBOLS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

Protective Ground Terminal

AC mains (Alternating Current)

Hazardous Live Terminal

ON:

Denotes the product is turned on.

OFF:

Denotes the product is turned off.

WARNING

Describes precautions that should be observed to
prevent the possibility of death or injury to the user.

CAUTION

Describes precautions that should be observed to
prevent damage to the product.

Always use proper ready-made insulated mains
cabling (power cord). Failure to do so could result
in shock/death or fire. If in doubt, seek advice from

a registered electrician.

To prevent fire and damage to the product, use only

Always install in accordance with the manufacturer's
instructions.

Keep product away from naked flames.

IMPORTANT SAFETY INSTRUCTIONS

Read these instructions

Follow all instructions

Keep these instructions. Do not discard.

Heed all warnings.

Only use attachments/accessories specified by the
manufacturer.

Do not tamper with the power cord or plug. These are
designed for your safety.

Do not remove Ground connections!

Protect the power cord and plug from any physical
stress to avoid risk of electric shock.

Do not place heavy objects on the power cord. This
could cause electric shock or fire.

WARNING

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.

Protective Ground

Operating Conditions

Power Cord and Plug

Cleaning

Servicing

Power Supply

External Connection

Do Not Remove Any Covers

Fuse

Refer all servicing 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 of electric shock and damage, do not
subject this product to any liquid/rain or moisture. Do
not use this product when in close proximity to water.

Do not install this product near any direct heat source.

Do not block areas of ventilation. Failure to do so could
result in fire.

Never cut internal or external Ground wires. Likewise,
never remove Ground wiring from the Protective Ground
Terminal.

Before turning the product ON, make sure that it is
connected to Ground. This is to prevent the risk of
electric shock.

Covers should be removed by qualified service
personnel only.

Within the product are areas where high voltages may
present. To reduce the risk of electric shock do not remove
any covers unless the AC mains power cord is removed.

Ensure that the mains source voltage (AC outlet) matches
the voltage rating of the product. Failure to do so could

result in damage to the product and possibly the user.

Unplug the product before electrical storms occur and
when unused for long periods of time to reduce the risk of

electric shock or fire.

No user serviceable parts inside.

This symbol, wherever used, alerts you to impo-
rtant operating and maintenance instructions.
Please read.

This symbol, wherever used, alerts you to the pre-
sence of un-insulated and dangerous voltages with-
in the product enclosure. These are voltages that
may be sufficient to constitute the risk of electric
shock or death.

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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