Alto Professional PBM4D User Guide

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User's Manual

PBM4D SISTEMA

PBM MONITOR

LTO

www.altoproaudio.com

Version 1.0 April 2005

English

SAFETY RELATED SYMBOLS

CAUTION

RISK OFELECTRIC SHOCK

DO NOTOPEN

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.

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.

WARNING

Power Supply

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.

External Connection

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.

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

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

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

Operating Conditions

Always install in accordance with the manufacturer's instructions.

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.

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.

Power Cord and Plug

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

Do 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.

Do Not Remove Any Covers

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.

Covers should be removed by qualified service personnel only.

No user serviceable parts inside.

Fuse

To prevent fire and damage to the product, use only

Cleaning

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.

Servicing

Refer all servicing to qualified service personnel only. Do not perform any servicing other than those instructions contained within the User's Manual.

PREFACE

Dear customer

Thank you for choosing the , which is the result of our AUDIO TEAM's endeavours.

For the LTO AUDIO TEAM, music and audio are more than a profession, it is a passion and an obsession!

LTO PBM SERIES MONITOR - PBM4D SISTEMA

We have, in fact, been designing professional audio products for a number of years in cooperation with many of the world's major brands. The LTO line represents unparalleled analogue and digital products made by musician, for musicians. With our design centres in Italy, the Netherlands, and United Kingdom we provide you with world-class designs, while our software development teams continue to develop an impressive range of audio specific algorithms.

By purchasing our LTO products you become the most important member of our LTO AUDIO TEAM. We would like to share with you our passion for what we design and invite you to make suggestions, which will aid us in developing future products for you. We guarantee you our commitment for quality, continual research and development, and of course the best prices.

LTO

The LTO is extremely flexible, ultra-low noise, which is configured with four inputs channels,

PBM4D SISTEMA

each of them is equipped with a variety of key features including a 2-band equalizer, one AUX send and level control etc.. Besides, the miraculous DSP with 16 presets and powerful digital power amplifier will meet your requirements.

We would like to thank all the people who made the LTO possible, especially to our designersPBM4D SISTEMA and LTO staff. It is their passion for music and professional audio that has made it possible for us to offer you, our most important team member, our continued support.

Thank you very much

LTO AUDIO TEAM

TABLE OF CONTENTS

1. INTRODUCTION.....................................................................................................................................4

2. FEATURES..............................................................................................................................................4

3. QUICK START..........................................................................................................................................5

4. CONTROL ELEMENTS...........................................................................................................................6

4.1 MONO INPUT CHANNELS

4.2 +15V PHANTOM POWER SWITCH

4.3 TAPE IN

4.4 TAPE OUT

4.5 LEVEL CONTROL

4.6 DSP/FX AUX1 POST CONTROL

4.7 2-BAND EQ (FOR INPUT CHANNELS)

4.8 3-BAND EQ (FOR MAIN POWER OUT)

4.9 MONITOR OUT

4.10 MAIN POWER OUT

4.11 OPERATING LED

4.12 MONITOR LEVEL CONTROL

4.13 MAIN MIX LEVEL LED

4.14 MAIN MIX LEVEL CONTROL

4.15 DSP SECTION

4.16 THE REAR PANEL

5. INSTALLATION AND CONNECTION......................................................................................................9

5.1 AUDIO CONNECTIONS

6. PRESET LIST..........................................................................................................................................11

7. TECHNICAL SPECIFICATION...............................................................................................................12

8. BLOCK DIAGRAM.................................................................................................................................13

9. WARRANTY...........................................................................................................................................14

1. INTRODUCTION

Thank you very much for expressing your confidence in LTO products by purchasing LTO . ThePBM4D SISTEMA PBM4D SISTEMA is professional monitor, which provides the state of the art digital amplifier technology specifically. You will get the smooth, accurate, more natural and open sound from this apparatus, it is really ideal for small gigs, recording and fixed PA installations. The is packed with some key features. For example: there are 3 Mic/Line inputs which provided withPBM4D SISTEMA ultra low noise microphone pre-amplifiers and phantom power at +15V and one Tape in/out channel, each of them features a 2-band EQ, AUX send and level control; main power out with a 3-band EQ and level control; monitor out with level control, 16 positions multi-effect and so on.

Though your is very easy to operate, we strongly recommend you to go through each section ofPBM4D SISTEMA this manual PBM4D SISTEMAcarefully, in this way you will get the best out of your .

2. FEATURES

The is designed for professional application. It provides the following features:PBM4D SISTEMA

Digital amplifier technology, offering high power and a very dynamic sound 3-band EQ for MAIN POWER OUT 3 MIC/line input channels with balanced XLR and TRS inputs Ultra-low noise discrete MIC pre-amps with +15V phantom power 2-band EQ on each input channel Each input channel with level control and DSP/FX AUX1 POST control Tape in/out 16 positions digital signal processor POWER OUTPUT: 80Wrms

.(load.8Ohm)

3. QUICK START

3.1 Please check the AC voltage available in your country before connecting your PBM4 to the AC socket.D SISTEMA

3.2 Be sure that the main power is turned off before connecting the monitor to the AC socket. Also, you should make sure that all input and output controls are turned down. This will avoid damages to your speakers and avoid

noise.excessive

3.3 Please connect one side of the passive speaker cable to the MAIN POWER OUT of your PBM4 , andD SISTEMA

side to the input of your passive speaker cabinet.the other

3.4 Before disconnecting the PBM4 always turn off the power switch.

D SISTEMA

3.5 Do not use solvents to clean your PBM4 . A dry and clean cloth will be OK.D SISTEMA

MAIN POWER OUT

( MIN. LOAD )

Passive speaker 2

4. CONTROL ELEMENTS

OPERATING

MONITOR

MAIN

HIGH

MIDDLE

( MIN. LOAD )

MONITOR OUT

PHANTOM

OFF

MAIN POWER OUT

-30

+10dB

+15dB

-15dB

+15dB

-15dB

AUX1

POST

DSP/FX

LEVEL

HIGH

AUX1

POST

DSP/FX

HIGH

12KHz

+10dB

+15dB

-15dB

+10dB

+15dB

-15dB

LOW

80Hz

+10dB

+15dB

-15dB

+10dB

+15dB

-15dB

LEVEL

TAPE

(bal.)

LINE IN

OUT

CH 4

CH 3

MIC IN (bal.)

-10

SISTEMA

PBM4D

1. WARM HALL

PRESETS

CLIP

DSP

MUTE

LTO

DSP

2. BRIGHT HALL

3. WARM ROOM

4. BRIGHT ROOM

MUTE

BASS

5. VOCAL 1

6. VOCAL 2

7. VOCAL 3

+15dB

AUX1

POST

-15dB

DSP/FX

+10dB

12KHz

+15dB

-15dB

+10dB

+15dB

-15dB

LOW

8. PLATE

9. STEREO DELAY1

10. STEREO DELAY2

11. REV + DELAY1

12. REV + DELAY2

13. REV + DELAY3

14. REV + DELAY4

15. REV + CHORUS1

16. REV + CHORUS2

AUX/DFX RET

PRESETS

HIGH

AUX1

POST

DSP/FX

HIGH

80Hz

+10dB

+15dB

-15dB

+10dB

+15dB

-15dB

LEVEL

(bal.)

LINE IN

(bal.)

LINE IN

CH 2

MIC IN (bal.)

CH 1

MIC IN (bal.)

4.1 MONO INPUT CHANNELS

There are CH1 through CH3, which comes with balanced MIC IN and LINE IN connectors. Use the XLR (MIC IN) socket to connect low impedance microphone or low level signal, which also features +15V Phantom Power allowing you to connect condenser microphone. Use the 1/4" TRS (LINE IN) jack to connect either a microphone or a line level instrument such as synthesizer, drum machine, and effect processor or any other line level signal.

Note: You shall never connect an unbalanced microphone to the XLR socket if you do not want do damage both the microphone and the monitor.

4.2 +15V PHANTOM POWER SWITCH

This switch will apply +15 Volt Phantom Power only to the 3 XLR sockets. When these XLR sockets are connected with devices that do not require Phantom Power, please make sure the Phantom Power is turned off, otherwise, this may damage the device and monitor.

4.3 TAPE IN

Your PBM4 features dual RCA jacks (left andD SISTEMA right). If you wish to listen to your monitor from a tape recorder, DAT or cassette, please use these tape input jacks.

HIGH

12KHz

LOW

80Hz

-15dB

+15dB

LEVEL

MIC IN (bal.)

CH 1

DSP/FX

AUX1 POST

+10dB

(bal.)

LINE IN

4.4 TAPE OUT

Via these jacks (left and right), you can route the main out signal into a tape recorder or DAT for recording.

4.5 LEVEL CONTROL

This control is used to adjust the overall level of respective channel. The adjustable ranges goes from - to +10dB.

4.6 DSP/FX AUX1 POST CONTROL

This control is used to adjust the level of the effect signal for respective channel.

4.7 2-BAND EQ (FOR INPUT CHANNELS)

Your PBM4 features a 2-band equalizer onD SISTEMA each input channel allowing you to adjust the HIGH and LOW frequencies.

HIGH

This is the treble control. You can use it to get rid of high frequency noises or to boost the sound of cymbals or the high harmonics of the human voice. The gain range goes from 15dB to +15dB with a center frequency of 12kHz.

PHANTOM

OFFON

LEVEL

CH 4

TAPE

OUT

LOW

This is the bass control. It is used to boost male voice or kick-drum and bass guitar. Your system will sound much bigger than what it is. The gain range goes from 15dB to +15dB and the center frequency is 80Hz.

4.8 3-BAND EQ (FOR MAIN POWER OUT)

A 3-band EQ is provided for output signals of MAIN POWER OUT, it allows you to adjust the HIGH, MIDDLE and BASS frequencies respectively.

HIGH

This is the treble control. You can use it to get rid of high frequency noises or to boost the sound of cymbals or the high harmonics of the human voice.

MIDDLE

This is the midrange control. It can affect most fundamental frequencies of all musical instruments and human voice. An attentive use of this control will give you a very wide panorama of sound effects.

BASS

This is the bass control. It is used to boost male voice or kickdrum and bass guitar. Your system will sound much bigger than what it is.

BASS MIDDLE HIGH

-15dB

+15dB

-15dB

+15dB

-15dB

11 10

MAIN POWER OUT

( MIN. LOAD )

+15dB

4.9 MONITOR OUT

This jack is used to connect the input of external monitor

amplifier or active monitor speaker.

4.10 MAIN POWER OUT

The both jacks are used to output the main mix signal to external passive speaker, and the minimum load is 8ohm.

4.11 OPERATING LED

This LED indicates when the power is switched on in your PBM4 .D SISTEMA

4.12 MONITOR LEVEL CONTROL

This control is used to adjust the level of monitor output.

4.13 MAIN MIX LEVEL LED

The stereo 4-segment LED meter is used to monitor the main power output level.

4.14 MAIN MIX LEVEL CONTROL

This control is used to adjust the overall volume of main mix output.

MONITOR OUT

MAIN

+10dB

LEVEL

MONITOR

-10

-30

16 14

+10dB

OPERATING

PHANTOM

OFFON

4.15 DSP SECTION

Your PBM4 features a 16-preset digital signalD SISTEMA processor, further details please refer to following content.

PRESETS

Adjust this knob to select the right effect you wish to perform. There are total 16 options for you: WARM HALL, BRIGHT HALL, WARM ROOM, BRIGHT ROOM, VOCAL 1, VOCAL 2, VOCAL 3, PLATE, STEREO DELAY1, STEREO DELAY2, REV + DELAY1, REV + DELAY2, REV + DELAY3, REV + DELAY4, REV + CHORUS1 and REV + CHROUS2.

2120

PRESETS

DSP

AUX/DFX RET

DSP

MUTE

CLIP

MUTE

PRESETS

1. WARM HALL

2. BRIGHT HALL

3. WARM ROOM

4. BRIGHT ROOM

5. VOCAL 1

6. VOCAL 2

7. VOCAL 3

8. PLATE

9. STEREO DELAY1

10. STEREO DELAY2

11. REV + DELAY1

12. REV + DELAY2

13. REV + DELAY3

14. REV + DELAY4

15. REV + CHORUS1

16. REV + CHORUS2

18 19

-AUX/FX RET

This control is used to adjust the volume of FX RETURN.

-DSP MUTE

This switch is used to activate/deactivate the effect facility. To activate the muting function by pressing this button, to deactivate the muting function by depressing this button.

-CLIP/MUTE LED

This LED lights up when the input signal is too strong. In case of the digital effect module being muted, this LED also lights up.

4.16 THE REAR PANEL

POWER ON/OFF

This switch is used to turn the main power ON/OFF.

AC INLET

ONPOWER

Use it to connect your PBM4D to the main AC with the supplied AC cord. Please check the voltage available in your country and how the voltage for your PBM4 is confiD SISTEMA gured

OFF

FUSE 2A

AC~230V

50/60Hz

before D SISTEMA toattempting to connect your PBM4 the main AC.

5. INSTALLATION AND CONNECTION

Ok, you have got to this point and you are now in the position to successfully operate your PBM4 . How-D SISTEMA ever, we advise you to read carefully the following section to be the real master of your own monitor. Not paying attention enough to the input signal level, to the routing of the signal and the assignment of the signal will result in unwanted distortion, a corrupted signal or no sound at all. So you should follow this procedure for every single channel.

Turn down all input and output level controls. Connect phantom powered microphones before switching on the +15Volt phantom power switch.

D SISTEMASet the output level of your PBM4 at no more than 75%. Now, set the MONITOR level at no more than 50%. In this way you will be able to hear later what you are doing connecting a pair of powered studio monitor speakers. Position EQ controls on middle position. 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 output level through the MAIN MIX LEVEL control.

5.1 AUDIO CONNECTIONS

You can connect unbalanced equipment to balanced inputs and outputs. Simply follow these schematics.

Strain Clamp

Sleeve

Tip

Ring

Sleeve=Ground/Screen

Use for Headphone

Ring=Right Signal

1/4" Stereo (TRS) Jack Plug

Sleeve

Tip

Sleeve=Ground/Screen

Use for Mono Line In, Mono 1/4"Jack Plugs

Tip=Left Signal

Tip=Signal

2=Hot(+)

Strain Clamp

1/4" Mono (TS) Jack Plug

Sleeve

Tip

Ring

Sleeve=Ground/Screen

Use for Insert Points

Ring=Return Signal

Tip=Send Signal

1/4" Stereo (TRS) Jack Plug

1=Ground/Screen

2=Hot(+)

1=Ground/Screen

3=Cold(-)

Use for Balanced Mic Inputs

(For unbalanced use, connect pin 1 to 3)

3-pin XLR Male Plug

(seen from soldering side)

3=Cold(-)

Use for Main output

(For unbalanced use, leave pin 3 unconnected)

3-pin XLR Line Socket

(seen from soldering side)

6. PRESET LIST

No. Preset

WARM HALL

BRIGHT HALL

WARM ROOM

BRIGHT ROOM

VOCAL 1

VOCAL 2

VOCAL 3

PLATE

Description

Simulate a small acoustic space of the sound.

Simulate a large acoustic space of the sound.

Simulate a small acoustic space of the sound.

Simulate a studio room with many early reflections.

Simulate a room with without delay time.

Simulate a room with small delay time.

Simulate a small space with slight decay time.

Simulate the transducers sound like classic bright vocal plate.

parameter

Rev. Decay time: 360ms Pre-delay: 45ms

Rev. decay time: 290ms Pre-delay: 23ms

Rev. decay time: 210ms Pre-delay: 45ms

Rev. Decay time: 210ms Pre-delay: 23ms

Rev. decay time: 450ms

Rev. decay time:240ms Pre-delay: 25ms

Rev. decay time:100ms Pre-delay: 114ms

Pre-delay: 10ms Rev. decay time: 290ms

STEREO DELAY 1

STEREO DELAY 2

REV + DELAY 1

REV + DELAY 2

REV + DELAY 3

REV + DELAY 4

REV + CHORUS1

REV + CHORUS2

Recreate the input sound on the stereo output with different time.

Delay with room effect.

Simulate the sound effect achieved by rotating horn speakers and a bass cylinder.

Period: 352ms

Period: 238ms

Delay period: 326ms Rev. decay time: 290ms

Delay period: 211ms Rev. decay time: 240ms

Delay period: 375ms Rev. decay time: 210ms

Delay period: 277ms Rev. decay time: 150ms

Chorus rate: 3.67Hz Rev. decay time: 290ms

Chorus rate: 3.02Hz Rev. decay time: 150ms

7. TECHNICAL SPECIFICATION

Input channels

Impedances

Equalization

DSP Section

Main Mix Section

Amplifier Section

Power supply

Physical

Microphone Input

Frequency response Distortion(THD&N)

Gain SNR(Signal to Noise Ratio) Line input Frequency response Distortion(THD&N)

Gain

Microphone Input

Channel Insert return All other inputs

Tape out All other outputs Hi shelving Low shelving A/D and D/A converters DSP resolution Type of effects

Presets Controls

Noise(Bus noise)

M max outONITOR FX Sends max out Output Power 80W RMS (Nominal power) Frequency Response Output Impedance Main voltage

Power Consumption Fuse

Dimensions 216.5x143.5 152.5mm(L W H)(8.5" 5.6" 6")xxxxx Net Weight Shipping Weight

Volume 2.81CFT

Electronically balanced, discrete input configuration

10Hz to 55kHz, +/- 3dB

0.05% at +4dBu, 1kHz

30dB >94dB Electronically balanced

10Hz to 55kHz, +/- 3dB

0.05% at +4dBu, 1kHz

10dB

1.4kOhm

2.5kOhm 10kOhm or greater

1kOhm 120Ohm +/-15dB@12kHz +/-15dB@80Hz 24bit 24bit

HALL, ROOM, VOCAL, PLATE

REV+DELAY, and REV+CHORUS combinations

16 16-position PRESET selector CLIP LED MUTE SWITCH with LED indicator Fader 0 dB, channels muted: -85dBr (ref.: +4dBu) Fader 0 dB, all input channels assigned and set to

UNITY gain: -81dBr(ref.: +4dBu)

+22dBu unbalanced, 1/4"jacks +22dBu

25HZ-20KHZ 8 ohm USA/Canada 100 120V~, 60Hz Europe 210 240V~, 50Hz

U.K./Australia 240V~, 50Hz 133 watts

100-120V~: T4A 21 T2A0-240V~:

12.6kg

14.45 kg

, STEREO DELAY

8. BLOCK DIAGRAM

AUX SEND2

OUTPUT

2-TRACK

TAPE OUT

OUT

MONITOR

TAPE IN

AMPLIFIER

DIAGRAM

PBM4D -MX

POWER

BLOCK

ALTO

)

4POINT (

MAIN LEV EL

3-BAND

MID

LOW

2TK IN

LEVEL

MON ITOR L E VE L

MAIN BUS

RET

AUX/DFX

MAIN B US

DFX (DSP)

DSP BOARD

DFX SEND

DFX(DSP)

MAIN-BUSMAIN BUS

[-10dB]

LOW

[10dB]

[0dB]

LEVEL

MAIN B US

[-6dB]

DFX SEND

2-STAGE

OFF

213

+15V

PHANTO

LOW-Z

HI-Z

[-40/-20dB]

[-30/-10dB]

(CH1-3)

CH INPUT

3c5e1a4d2b

FX RETURN

MUTE

PRESETS

DSP FOOTSWITCH

9. WARRANTY

1. WARRANTY REGISTRATION CARD

To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within 10 days of the Purchase Date.

All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a more effective and efficient after-sales warranty service.

Please fill out all the information carefully and genuinely, miswriting or absence of this card will void your warranty service.

2. RETURN NOTICE

2.1 In case of return for any warranty service, please make sure that the product is well packed in its original shipping carton, and it can protect your unit from any other extra damage.

2.2 Please provide a copy of your sales receipt or other proof of purchase with the returned machine, and give detail

information about your return address and contact telephone number.

2.3 A brief description of the defect will be appreciated.

2.4 Please prepay all the costs involved in the return shipping, handling and insurance.

3. TERMS AND CONDITIONS

3.1 warrants that this product will be free from any defects in materials and/or workmanship for a period

LTO

of 1 year from the purchase date if you have completed the Warranty Registration Card in time.

3.2 The warranty service is only available to the original consumer, who purchased this product directly from the

retail dealer, and it can not be transferred.

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:

Instead of operating in accordance with the user's manual thoroughly, any abuse or misuse of this product.

Normal tear and wear.

The product has been altered or modified in any way.

Damage which may have been caused either directly or indirectly by another product / force / etc.

Abnormal service or repairing by anyone other than the qualified personnel or technician.

And in such cases, all the expenses will be charged to the buyer.

3.5 In no event shall be liable for any incidental or consequential damages. Some states do not allow the exclu-

LTO

sion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you.

3.6 This warranty gives you the specific rights, and these rights are compatible with the state laws, you may also

have other statutory rights that may vary from state to state.

SEIKAKU TECHNICAL GROUP LIMITED

SEKAKU ELECTRON INDUSTRY (H.K.) CO., LTD.

No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan

http://www.altoproaudio.com Tel: 886-4-22313737

email: alto@altoproaudio.com Fax: 886-4-22346757

without prior notice. Any photocopy, translation, or reproduction of part of this

NF02055-1.0

Alto Professional PBM4D User Guide

Specifications and Main Features

Frequently Asked Questions

User Manual