Alto L-6 Owners Manual

R

LTO

L-6

6-CHANNEL MIXING CONSOLE
WITH DIGITAL EFFECTS

OWNER'S MANUAL

www.altoproaudio.com

Version 2.0 SEPTEMBER 2007

English

IMPORTANT SAFETY INSTRUCTION

CAUTION

RISK OFELECTRIC SHOCK

DO NOTOPEN

TO REDUCE THE RISK OF ELECTRIC SHOCK
PLEASE DO NOT REMOVE THE COVER OR
THE BACK PANEL OF THIS EQUIPMENT.
THERE ARE NO PARTS NEEDED BY USER
INSIDE THE EQUIPMENT. FOR SERVICE,
PLEASE CONTACT QUALIFIED SERVICE
CENTERS.

This symbol, wherever used, alerts you to the

presence of un insulated and dangerous voltages
within the product enclosure. These are voltages that
may be sufficient to constitute the risk of electric
shock or death.

This symbol, wherever used, alerts you to
important operating and maintenance instructions.

Please read.

Protective Ground Terminal
AC mains (Alternating Current)

Hazardous Live Terminal
ON: Denotes the product is turned on.
OFF: Denotes the product is turned off.

CAUTION

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

1.

Read this Manual carefully before operation.
Keep this Manual in a safe place.

2.

Be aware of all warnings reported

3.

with this symbol.

4.

Keep this Equipment away from water and
moisture.

5.

Clean it only with dry cloth. Do not use
solvent or other chemicals.

6.

Do not damp or cover any cooling opening.
Install the equipment only in accordance with
the Manufacturer's instructions.

Power Cords are designed for your safety. Do

7.

not remove Ground connections! If the plug
does not fit your AC outlet, seek advice from
a qualified electrician. 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.

Unplug this equipment when unused for long

8.

periods of time or during a storm.

Refer all service to qualified service personnel

9.

only. Do not perform any servicing other than
those instructions contained within the
User's Manual.

To prevent fire and damage to the product,

10.

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.

WARNING

To reduce the risk of electric shock
and fire, do not expose this equipment
to moisture or rain.

Dispose of this product should
notbeplacedinmunicipalwaste
and should be separate collection.

MovethisEquipmentonlywithacart,

11.

stand, tripod, or bracket,
specified by the
manufacturer, or
sold with the
Equipment. When
a cart is used, use
caution when
moving the cart /
equipment
combination to
avoid possible
injury from tip over.

12.

Permanent hearing loss may be caused by
exposure to \ extremely high noise levels.
The US. Government's Occupational Safety
and Health Administration (OSHA) has
specified the permissible exposure to noise
level.
These are shown in the following chart:

HOURS X DAY

8
6
4
3
2
1,5
1
0,5
0,25 or less

According to OSHA, an exposure to high SPL in
excess of these limits may result in the loss of
heat. To avoid the potential damage of heat, it is
recommended that Personnel exposed to
equipment capable of generating high SPL use
hearing protection while such equipment is
under operation.

The apparatus shall be connected to a mains
socket outlet with a protective earthing
connection.

The mains plug or an appliance coupler is used
as the disconnect device, the disconnect device
shall remain readily operable.

EXAMPLE

SPL

Small gig

90

train

92

Subway train

95

High level desktop monitors

97

Classic music concert

100
102
105
110
115

Rock concert

IN THIS MANUAL:

1. INTRODUCTION........................................................................1

2. FEATURES...............................................................................1

3. QUICK START...........................................................................4

4. CONTROL ELEMENTS...............................................................5

5. INSTALLATION & CONNECTION................................................11

6. APPENDIX.............................................................................13

7. PRESET LIST.........................................................................13

8. BLOCK DIAGRAM...................................................................14

9. TECHNICAL

SPECIFICATIONS....................................................15

10. WARRANTY.........................................................................16

1. INTRODUCTION

Thank you for purchasing the LTO L-6 6-channel mixing console with 24-bit
digital multi-effect. It is just one of the many Alto products that a talented,
multinational Team of Audio Engineers and Musicians have developed with their
great passion for music. Your L-6 is a remarkable compact mixing desk that
does not find many equals in the market today. With 2 microphone and 2 stereo
Line-level inputs for small live performances, small studio recording and general
PA applications, your L-6 also includes a 24-Bit digital multi-effect with 16
Factory Presets and separate level for digital reverb. There is a three bands EQ
on all input channels and separate Main Mix and Control Room outputs for
Multizone operation with different volume settings. Use it for small GIGs and
RECORDING. Your L-6 also is a flexible tool for your Multi-media presentations.

Enjoy your L-6 and make sure to read this Manual carefully before operation!

2. FEATURES

2 MIC input channels with gold plated XLR and balanced LINE input
2 stereo input channels with balanced TRS jacks
Ultra-low noise discrete MIC pre-amps with +48V Phantom power
Extremely high headroom offering extra dynamic range
Balanced inputs for optimal signal integrity
Warm, natural 3-band EQ on each channel
Built-in 24 bits digital effects processor
Peak LED on each channel
AUX send for internal/external effects or stage monitoring
Main output, Control room and headphone outputs
2-Track inputs assignable to main mix, control room/headphone outputs
Highly accurate 6-segment bar graph meters

1

SPOTLIGHT

MIC 1

3

LINE IN 1

TRIM

+15dB 45dB LINE

0dB 60dB MIC

0

+15+151515

0

+1212

0

+15+151515

0

D
F
X

8

+15

RIGHTLEFT

12

BAL OR

UNBAL

EQ

12kHz

MID

2.5kHz

LOW
80Hz

AUX

POST
(PRE)

PAN

PEAK

HI

MIC 2

3

LINE IN 2

TRIM

+15dB 45dB LINE

0dB 60dB MIC

0

+15+151515

0

+1212

0

+15+151515

0

D
F
X

8

+15

RIGHTLEFT

STEREO AUX RETURNS

12

BAL OR
UNBAL

EQ

HI

12kHz

MID

2.5kHz

LOW
80Hz

AUX

D

POST

F

(PRE)

X

PAN

PEAK

LEFT

LINE IN 3/4

LEFT (MONO)

RIGHT

0

+15+151515

0

+1212

0

+15+151515

0

8

+15

RIGHTLEFT

EQ

12kHz

MID

2.5kHz

LOW
80Hz

AUX

POST
(PRE)

BAL

PEAK

HI

AUX SENDS

PHONES

LINE IN 5/6

LEFT (MONO)

RIGHT

0

0

0

0

D
F
X

8

CONTROL ROOM OUTPUT

LEFT

RIGHTRIGHT

MAIN MIX OUTPUT

LEFT

RIGHT

EQ

HI

12kHz

+15+151515

MID

2.5kHz

+1212

LOW
80Hz

+15+151515

AUX

POST
(PRE)

+15

BAL

RIGHTLEFT

PEAK

6-CHANNEL MIXING CONSOLE

WITH DIGITAL EFFECTS

2-TRACK IN/OUT

L

R

TAPE IN TAPE OUT

1

16

2

3

15

14

13

12

11

8

10

9

PRESETS

10

0

FX LEVEL

0

8

+15

AUX RETURNS

(DFX)

2TK TO

CTRL ROOM

4

5

6

7

PHANTOM PWR

2TK TO MIX

LTO

1 VIBRAFLANGE
2 FUNKY
3 ROCKABILLY
4 BIGSTAGE
5

VIBRATO

8
9

FLANGER

12
13

CHORUS

16

100

REVERB LEVEL

R

L-6

PEAK

POWERPHANTOMPHANTOM

CLIP

10

0

4

10

30

L

R

OUTPUT LEVEL

0

8

-+15

-+158-+158-+158-+15

LEVEL

1

LEVEL

2

LEVEL

3/4

2

LEVEL

5/6

8

8

PHONES /

MAX

CONTROL
ROOM

8

+15

MAIN MIX LEVEL

HOOK

SMALL GIG

HOOK

UP

MIC 1

MIC 2

MIC 1

LINE IN 1

TRIM

+15dB -45dB LNE

0dB 60dB M C

MIC 2

12

3

BAL OR
UNBAL

3

LINE IN 2

TRIM

+15dB -45dB LNE

0dB 60dB M C

KEYBOARD DRUM MACHINE

BAR, PUB, RESTAURANT

UP

WIRELESS MIC

DIGITAL EFFECT UNIT

TEREO AUX RETURNS

AUX SENDS

12

LEFT

PHONES

BAL OR

LINE N 3/4

LEFT (MONO)

R GHT

L NE IN 5/6

LEFT (MONO)

R GHT

UNBAL

STEREO AUDIO FROM TV

TV SCREEN

POWERED STAGE MONITORS

CONTROL R OM OUT UT

LTO

6 CHANNEL MIXING CONSOLE

LEFT

WITH DIGITAL EFFECTS

RIGHTRIGHT

MAIN MIX OUTPU

RIGHT

LEFT

2 TRACK IN/OUT

L

R

TAPE N TAPE OUT

ACTIVE SPEAKERS (ALTO PS4 HA)

ZONE 2 ACTIVE SPEAKERS

HEADPHONE

CD PLAYER

L-6

DAT OR TAPE RECORDER

DAT

GUITAR

MIC 1

3

LINE IN 1

TRIM

+15dB 45dB LINE

0dB 60dB MIC

12

BAL OR
UNBAL

MIC 2

3

LINE IN 2

TRIM

+15dB 45dB LINE

0dB 60dB MIC

D/I BOX

12

BAL OR
UNBAL

STEREO AUX RETU NS

LEFT

LINE IN 3/4

LEFT (MONO)

RIGHT

DRUM MACHINE

AUX SENDS

PHONES

LINE IN 5/6

LEFT (MONO)

R GHT

CONTROL ROOM OUTPUT

LEFT

RIGHTRIGHT

MAIN MIX OUTPUT

LEFT

RIGHT

MAIN ACTIVE SPEAKERS

R

L-6

LTO

6 CHANNEL MIXING CONSOLE

WITH DIGITAL EFFECTS

2 RACK N/OUT

L

R

TAPE IN TAPE OUT

CD PLAYER

2 TRACK RECORDER

3

3. QUICK START

This is the fastest way to get something out from your L-6, if you have a
keyboard and a microphone.

a. With the Main switch in OFF position, connect the supplied AC Adapter to

your L-6 first and then into the AC outlet, making sure that the available
voltage is the same with your L-6.

b. Before turning on the L-6, you shall connect it to a power amplifier and

speakers. Turning off the mixer BEFORE the power amplifier.

c. Plug the microphone into Channel 1 MIC IN.

d. Turn down AUX and LEVEL controls on the input channel.

e. Put the EQ controls on center position.

f. Turn on your L-6.

g. With LEVEL control on "0" position, sing or speak in to the microphone with

normal volume and adjust the TRIM control so that the PEAK LED only blink
occasionally.

h. If you like, you can adjust the equalization at this stage.

i. Turn up MAIN MIX LEVEL until you get a comfortable volume.

j. Connect your stereo keyboard into CH 3/4 and repeat the same sequence.

Here you are. It is your first mix with your L-6.

Once you have finished your working session you shall turn the mixer off AFTER

the power amplifier. Before disconnecting the AC Adapter always turn-off your

L-6.Do not use solvents to clean your L-6. A dry and clean cloth will be OK.

4