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29

7. SYSTEM BLOCK DIAGRAMS

1

2

3

4

5

6

7

8

9

10

11

12

A

B

C

D

12

11

10

9

8

7

6

5

4

3

2

1

D

C

B

A

CH2-CH8

IDENTICAL

TO

CH1

2

1

3

CH1

+4

8

V

3-BAND

EQ

12K

100H

z-

8kH

z

80

HI

PA

S

S

SG/

OL

LEF

T-B

US

RIGHT-BUS

AUX1

AUX2

RIGH

T-BUS

LEFT

-BUS

AUX1

AUX2

STEREO

INPUT

CHANNELS

(CH9-16)

LEFT

-BUS

RIGH

T-BUS

AUX1

AUX4

MAI

N

OU

T

LEFT

-BUS

RIGH

T-BUS

TA

PE

IN

RIGH

T

2TK

2T

K

LE

FT

M

ETE

R

RI

GH

T

M

ET

ER

75H

z

+/-1

5db

4-BAND

EQ

12K

500

80

+/

-15db

MAIN

MIX

MAIN

MIX

LEFT

T

R

S

MA

IN

MIX

RIGH

T

T

R

S

PHONE

B

T

R

S

LEV

E

L

PHONES

LEFT

TA

PE

OUT

2

1

3

2

1

3

LEV

EL

STEREO

AUX

RTN1

3c

5e

1a

4d

2b

3c

5e

1a

4d

2b

LEV

EL

-

+

T

R

S

RN TN

T

R

S

RN TN

PA

N

PHA

NTOM

CH1

GAIN

-

+

POWER

-

+

LO

(FREQ)

HI

AUX2

AUX1

FA

DER

POS

T

PRE

BAL

AN

C

E

FA

DER

3c

5e

1a

4d

2b

LEFT(

MONO)

3c

5e

1a

4d

2b

RIGH

T

T

R

S

RN TN

T

R

S

RN TN

-

+

-

+

M

IC

G

AI

N

:0~60dB

LI

NE

IN

TR

IM

:+15dB~-45dB

AFL-L

AFL-R

SOL

O(PFL

)

SOLO

ON
()

AFL

-L

AFL

-R

SOL

O

(PFL

)

SOLO

ON
()

AFL

-L

AFL

-R

SOL

O

(PFL)

EFXSEND

LEF

T-B

US

RIGHT-BUS

AUX1

AUX2

AFL-L

AFL-R

SOLO

(PFL)

DFXSEND

AFL

L

AFL

R

SOLO(PFL)

Summary of Contents for L-16

Page 1: ...User s Manual LTO R www altoproaudio com Version 1 0 September 2003 English 16 CHANNEL COMPACT INTEGRATED LIVE SOUND MIXER WITH DIGITAL EFFECTS L 16 ...

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: ...you We guarantee you our commitment for quality continual research and development and of course the best prices Thank you for choosing the LTO L 16 16 Channel Compact Integrated Live Sound Mixer with Digital Effects which is the result of our LTO AUDIO TEAM s endeavours The LTO L 16 is an extremely flexible ultra low noise 16 channel compact integrated live sound mixer with Digital Effects config...

Page 4: ...32 6 PRESET LIST 22 4 CONTROL ELEMENTS 7 4 1 The MONO MIC LINE Channels 8 4 2 INPUT LEVEL Setting 8 4 3 MONO Channel INSERT 8 4 4 LOW CUT FILTER 8 4 5 STEREO INPUTS 9 4 6 EQUALISER 9 4 7 AUX SENDS Level Control 10 4 8 PAN BAL Control 10 4 9 SG PEAK LED 10 4 10 MUTE Switch 10 4 11 FADER 11 4 14 REAR PANEL Description 15 4 12 ASSIGNMENT Control 11 4 13 MASTER Section 11 ...

Page 5: ...Low Noise microphone pre amplifiers and Phantom Power at 48 Volt and 4 stereo input channels and each of them is provided with warm natural EQ channel1 8 are mono channels and equipped with 3 band MID sweep EQ channel 9 16 are stereo channels and equipped with 4 band fixed frequency EQ 16 presets 16 variations 4 AUX sends se 24 bits digital stereo effect processor with 256 presets parate level con...

Page 6: ...pt for stereo channel SUB 1 2 SUB 3 4 and MAIN L R signal assignment switch 4 AUX sends per channel 2 PRE POST faders switch able for monitoring application and effects sound processor input 2 POST faders for internal digital DFX or as external send 4 band fixed EQ on stereo line channels 3 band EQ with swept mid on microphone channels Channel inserts and direct outputs on each mono channel plus m...

Page 7: ...d Output Controls are turned down This will avoid damages to your speakers and avoid excessive noise 3 3 Before turning on the L 16 you shall connect it to a power amplifier and turn on the mixer BEFORE the power amplifier Once you have finished your working session you shall turn the mixer off AFTER the power amplifier 3 4 Before disconnecting the L 16 always turn off the Power switch 3 5 Do not ...

Page 8: ...75Hz LOW CUT 60dB 18dB Oct 15dB 0dB LINE MIC TRIM 45dB 75Hz LOW CUT 60dB 18dB Oct 15dB 0dB LINE MIC TRIM 45dB 75Hz LOW CUT 60dB 18dB Oct 15dB 0dB LINE MIC TRIM 45dB 75Hz LOW CUT 60dB 18dB Oct 15dB 0dB LINE MIC TRIM 45dB 75Hz LOW CUT 60dB 18dB Oct 15dB 0dB LINE MIC TRIM 45dB 75Hz LOW CUT 60dB 18dB Oct 15dB 0dB LINE MIC TRIM DFX1 INT DFX2 PAN EXT RIGHT LEFT 3 0 4 0 PRE POST AUX 1 2 0 0 15 8 15 8 15 ...

Page 9: ... socket On the 1 4 phone jack you can connect either a microphone or a line level instrument You shall never connect an unbalanced microphone to the XLR socket if you do not want to damage both the Microphone and the Mixer 48 Volt phantom power It is available only to the XLR Mic sockets Never plug in a microphone when phantom power is already on Before turning phantom power on make sure that all ...

Page 10: ...dB of boost or cut 4 6 1 HI 4 6 2 MID 7 8 4 6 3 HI MID 9 DFX1 INT DFX2 BAL EXT RIGHT LEFT 3 0 4 0 PRE POST HI MID 3kHz 500Hz 80Hz LOW MID LOW AUX 1 2 0 15 15 15 15 0 0 15 15 0 15 15 0 15 15 15 15 12kHz EQ 0 HI 15 8 15 8 15 8 15 8 POST 15 15 0 15 15 15 15 15 15 80Hz LOW 8kHz 0 100Hz FREQ 15 800 15 MID 0 EQ HI 12kHz DFX1 INT DFX2 PAN EXT RIGHT LEFT 3 0 4 0 PRE POST AUX 1 2 0 0 15 8 15 8 15 8 15 8 7 ...

Page 11: ...y to the external effect or processor equipment AUX SEND 4 can also be assigned to the internal onboard effect module 14 4 9 SG PEAK LED Inside your L 16 the audio signal is monitored in several different stages and then sent to the SG PEAK LED When the LED shows green it indicates that there present signal on corresponding channel When the LED turns into red it warns you that you are reaching sig...

Page 12: ...IN L R SOLO The other three buttons can be considered as signal assignment switches Pressing the SUB 1 2 will assign the channel signal to Subgroup1 2 you can depend on the PAN BAL switch to adjust the amount of channel signal sent to the SUB1 versus SUB2 when turns the PAN BAL to completely left then the signal can be only controlled by Subgroup1 and vice versa In the same way pressing the SUB 3 ...

Page 13: ... form these AUX SEND outputs As to the AUX4 it can also provide the lovable level adjustment for the internal effect signal 20 21 22 23 24 25 26 27 28 29 30 32 31 22 Master STEREO AUX RETURNS These four controls set the level of effects that received from the stereo AUX RETURN connectors which can be varied from to 15dB They are used to provide the further gain for low level effects MAIN MIX CTRL ...

Page 14: ...he SUB OUTS 29 MAIN MIX LEVEL This fader sets the amount of signal sent either to the Main Mix Output sockets or to the Tape Output 30 LED METER The stereo 12 segments LED Meter will indicate the signal level sent to CTRL ROOM and PHONE outputs 31 2TK TO MIX Engaging this switch allows you to combine the 2 TRACK Output with the MAIN MIX In other words feeds the 2TRACK IN signals into MAIN L R outp...

Page 15: ...effects with modulation and versatile two effect combination PRESETS 33 36 DSP MUTE VARIATIONS STEREO GRAPHIC EQ EQ OFF EQ ON AUX2 EFFECTS OUT 0 AUX1 DFX2 INT RETURN EFFECTS TO MONITOR PRESETS 0 0 PHANTOM PWR 15 8 15 8 15 8 15 0 10 5 10 15 5 63 500 250 125 2K 1K 15 0 10 5 15 10 5 16K 8K 4K 10 8 9 1 12 11 7 4 5 6 3 2 13 14 15 16 10 8 9 1 12 11 7 4 5 6 3 2 13 14 15 16 PEAK ...

Page 16: ...lutas till jordat uttag nar den ansluts till ett natverk 4 12 REAR PANEL Description 45 46 POWER ON OFF switch This switch is used to turn the Main Power ON and OFF 4 PHANTOM ON OFF switch 47 AC inlet with fuse holder Use it to connect your L 16 to the Main AC with the supplied AC cord Please check the Voltage available in your Country and how the Voltage for your L 16 is configured before attempt...

Page 17: ...s a sum output of the left and right of MAIN MIX MONO OUTPUT 51 This knob sets the level of mono mix output signal which can be varied from to 15dB MONO LEVEL 52 48 49 50 51 52 54 55 53 MAIN MIX OUTPUT 48 This button sets the main mix output level to match the input of the device that you are ready to connect Engage this button to reduce the output level from MAIN MIX OUTPUT by 30dBu it used to ma...

Page 18: ...se these stereo 1 4 phone sockets to return the sound of an effect unit to the Main Mix You can also use them as an extra auxiliary input AUX RETURNS 57 AUX RETURNS 4 3 AUX SENDS L L 4 3 R R 1 2 L L 1 2 R R 56 57 17 4 3 2 1 4 3 2 1 SUBGROUPS INSERT SUBGROUPS OUT DIRECT OUTS BAL UNBAL CH8 CH7 CH6 CH5 58 59 60 CH1 CH4 CH3 CH2 ...

Page 19: ... used to connect processors such as compressor limiter EQ etc When insert external processor into these jacks the subgroup stereo signal will be taken out then returned to before subgroups fader Of course these jacks used must be stereo Tip Send Ring Return SUBGROUPS INSERT 60 Each MONO MIC LINE channel CH1 CH8 is equipped the 1 4 phone socket for direct output These jacks are used to send the sig...

Page 20: ...l blink occasionally In this way you will maintain good headroom and ideal dynamic range Now connect a microphone and ask the singer to sing loud into the microphone Turn slowly the Gain Control clockwise and have the PEAK LED blink only occasionally Now repeat the same sequence for all input channels The Main LED Meter could move up into the red section In this case you can adjust the overall out...

Page 21: ... Tip Signal Use for Mono Line In Mono 1 4 Jack Plugs 1 4 Mono TS 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 Use for Main output For unbalanced use leave pin 3 unconnected 3 pin XLR Line Socket seen from soldering side 1 2 3 1 2 3 You can connect unbalanced equipme...

Page 22: ...tput Lead Enables the Insert to be used as a Direct Output while maintaining the channel signal flow Sleeve Sleeve Ground Screen Ring Return Signal Tip Send Signal To Channel Insert To Processor Input To Processor Output Ring Tip Stereo lead for insert Connection To be used when the processor does not employ a single jack connection for the In Out Connections ...

Page 23: ...o Pre delay Rev Time Room Size Rev Type Hi Damp 1 114 45 79 10 55 0 30 84 55 45 50 40 114 45 0 25 Hall 12 2 Spring 3 Plate 4 5 6 7 8 9 10 11 12 13 14 15 16 Spring Hall Plate 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 Plate Spring Tape Plate Hall Spring Tape Tape Plate 1 00 0 80 3 60 1 20 3 60 4 50 1 00 1 00 1 70 4 50 2 10 1 00 1 00 1 50 0 90 2 40 10 41 8 9 11 10 8 39 11 41 9 45 10 41 41 9 Spring...

Page 24: ...6 12 00 0 96 12 00 0 96 12 00 0 96 12 00 0 96 12 00 0 96 12 00 0 96 12 00 2 90 2 90 2 90 3 60 3 60 3 60 4 00 4 00 4 00 4 50 4 50 4 50 88 88 88 88 88 88 88 82 82 82 82 82 82 82 Rev level 04 SMALL HALL No Pre delay Rev Time Room Size Hi Damp 1 45 45 23 23 40 40 20 20 40 40 20 20 40 40 20 20 92 100 2 0 96 12 00 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 90 2 90 2 90 2 90 2 10 2 10 2 10 2 10 1 50 1 50 1 50 ...

Page 25: ...00 100 92 92 92 Rev level 07 PLATE No Pre delay Rev Time Room Size Hi Damp 1 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 2 2 08 3 4 5 6 7 8 9 10 11 12 13 14 15 16 6 10 5 40 4 50 4 00 3 60 2 90 2 40 2 10 1 70 1 50 1 30 1 20 1 00 0 80 0 70 0 60 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 2 08 2 08 2 08 2 08 2 08 2 08 2 08 2 08 2 08 2 08 2 08 2 08 2 08 2 08 2 08 08 TAPE REVERB No Pre delay Re...

Page 26: ... 87 2 0 96 12 00 3 4 5 6 7 8 9 10 11 12 13 14 15 16 5 4 5 4 4 50 4 50 4 4 3 60 3 60 2 90 2 90 2 40 2 40 1 70 1 70 1 30 1 30 35 35 33 33 30 30 28 28 22 22 22 22 22 22 22 22 0 96 12 00 0 96 12 00 0 96 12 00 0 96 12 00 0 96 12 00 0 96 12 00 0 96 12 00 87 87 87 92 100 92 100 100 100 100 100 79 79 79 Rev level 10 MONO DELAY No Delay F B 1 650 60 60 60 60 60 60 60 60 60 60 60 60 60 65 0 0 2 625 3 600 4 ...

Page 27: ...3 73 74 73 73 12 FLANGER No 1 2 3 4 5 6 7 8 9 10 11 12 Mod Freq 2 79 2 52 2 33 2 25 2 10 1 99 1 75 1 61 1 34 1 22 1 00 0 80 Pitch Depth 30 40 40 40 40 40 40 50 50 70 70 70 Left F B 38 42 38 38 42 38 42 38 42 58 62 62 Right F B 42 38 42 42 38 42 38 42 38 62 58 58 13 14 15 16 0 65 0 54 0 42 0 16 70 70 70 70 58 68 68 68 62 72 72 72 13 CHORUS No 1 2 3 4 5 6 7 8 9 10 Mod Freq 5 00 4 74 4 39 3 90 3 67 3...

Page 28: ...F B 48 28 28 28 28 28 28 28 48 28 28 28 28 28 28 28 Right F B 82 67 67 67 60 49 49 49 82 67 67 67 60 49 49 49 Rev level 80 80 80 80 80 80 80 80 90 90 90 90 90 90 90 90 Rev Time 15 REVERB FLANGER No 1 2 3 4 5 6 7 Rev Time 2 90 2 90 2 90 2 90 2 90 2 90 2 90 Room Size 39 39 39 39 39 39 39 Mod Freq 2 52 2 25 1 99 1 61 1 22 0 80 0 54 Pitch Depth 40 40 40 50 70 70 70 Left F B 40 40 40 40 60 60 70 Rev le...

Page 29: ...1 00 Room Size 39 39 39 39 39 39 39 39 26 26 26 26 26 26 26 26 Mod Freq 4 74 4 12 3 67 3 02 2 63 1 99 1 35 0 50 4 74 4 12 3 67 3 02 2 63 1 99 1 35 0 50 Pitch Depth 40 40 40 40 40 40 70 70 40 40 40 40 40 40 70 70 Left F B 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Rev level 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 28 ...

Page 30: ...z 15db 4 BAND EQ 12K 500 80 15db MAIN MIX MAIN MIX LEFT T R S MAIN MIX RIGHT T R S PHONE B T R S LEVEL PHONES LEFT TAPE OUT 2 1 3 2 1 3 LEVEL STEREO AUX RTN1 3c 5e 1a 4d 2b 3c 5e 1a 4d 2b LEVEL T R S RN TN T R S RN TN PAN PHANTOM CH1 GAIN POWER LO FREQ HI AUX2 AUX1 FADER POST PRE BALANCE FADER 3c 5e 1a 4d 2b LEFT MONO 3c 5e 1a 4d 2b RIGHT T R S RN TN T R S RN TN MIC GAIN 0 60dB LINE IN TRIM 15dB 4...

Page 31: ...ts 10kOhm or greater Tape out 1kOhm All other output 120Ohm Hi shelving 15dB 12kHz Mid bell mono 15dB 100Hz to 8kHz Low shelving 15dB 80Hz Low Cut filter 75Hz 18dB oct Hi Mid stereo 15dB 3kHz Mid low stereo 15dB 500Hz A D and D A converters 24 bit DSP resolution 24 bit Type of effects Hall Room Vocal Plate REVERBS Mono Stereo DELAY max DELAY TIME 650ms Chorus Flanger Reverb MODULATIONS REVERB DELA...

Page 32: ... 60Hz Europe 210 240V 50Hz U K Australia 240V 50Hz Power Consumption 65 watts Fuse 100 120V T800mAL 210 240V T500mAL Main connection Standard IEC receptacle Physical Net weight 7 8Kg 17 21lb Dimension W D H 495mm 495mm 38 117mm 19 48 19 48 1 50 4 58 ...

Page 33: ...TO 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 Normal...

Page 34: ...ll 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 photocopying translation or reproduction of any part of this user manual is allowed without prior written permission Copyright 2004 Seikaku Technical Group Limited c NF01493 1 0 ...

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