Alto Professional OEX-400S USER'S MANUAL

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Page 1

USER'S MANUAL

OEX-400S

STEREO FULL-RANGE COMPACT PORTABLE SOUND SYSTEM WITH 24-BITS DIGITAL EFFECTS

MP3PLAYER

ALL

MP3 USB REP

03:08

PHANTOM (CH1-4)

OEX-400s

OFF ON

EQ EQ EQEQEQ

HI HI HIHIHI

-15 +15 -15 +15 -15 +15-15 +15-15 +15

LOW LOW LOWLOWLOW

-15 +15 -15 +15 -15 +15-15 +15-15 +15

DSP

/FX

POST POST POSTPOSTPOST

- - --+10 +10 +10+10+10

PAN PAN BALPANPAN

RIGHT

LEFT

- - --+10 +10 +10+10+10

LEVEL LEVEL LEVELLEVELLEVEL

MIC MIC MIC MIC

LINE LINE LINE LINE LINE

MIC/LINE MIC/LINE

MIC/LINEMIC/LINE

345/621

WARMHALL

BRIGHTHALL

REV+CHORUS2

WARMROOM

REV+CHORUS1

BRIGHTROOM

REV+DELAY4

VOCAL1

REV+DELAY3

VOCAL2

REV+DELAY2

REV+DELAY1

VOCAL3

STEREO+DELAY2

PLATE

STEREO+DELAY1

PRESETS

DSP /FX

RIGHT

LEFT

POWERPEAK

DSP /FX

OUTPUT

MUTE

LEVEL

LEFT

(MP3)

LEFT(MONO)

RIGHT

+10

DSP

24Bitdigital effects

-10

+10

RIGHT

LEVEL

-30

MASTER

0 +10

FXRET LEVEL

PHONES

LRIN

FXRETURNS

(MIN.LOAD4Ohms)

L OUT R

FXSEND

CD/TAPE

SPK.OUT

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

SEIKAKU TECHNICAL GROUP LIMITED

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

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

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

www.altoproaudio.com

Version 1.2 DEC. 2010

English

NF03374-1.2

Page 2

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 provide 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 LTO warrants that this product will be free from any defects in materials and/or workmanship for a period 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, LTO may repair or replace this product at its own option at no charge to you for 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 LTO be liable for any incidental or consequential damages. Some states do not allow the exclusion 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.

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8. TECHNICAL SPECIFICATION

IMPORTANT SAFETY INSTRUCTION

FAT analysis

MP3 DECODE

Electric Specification

Power Section (SPK.OUT)

Distortion

Frequency Response SNR (Line IN) Output level Power continuous 1KHz,THD 1%

Power EIAJ 1KHz,THD 1%

Thermal protection

Short protection

Voltage protection

Speaker Section

Passive System Type Continuous Power Peak Power Max SPL at 1M Frequency Response Impedance Crossover Frequency Protection Coaxial Type Low Frequency Driver High Frequency Driver Coverage HxV Connectors

Statis Power Consumption

No Output powerstate at 230V

Dielectric Strength

Between Live+Negative Earth

Between Live+Negative IN/OUT Terminal(Positive+Negative)

Insulation Resistance

Between Live+Negative Earth(A Voltage of 500VDC) Between Live+Negative IN/OUT Terminal(Positive+Negative) (A Voltage of 500VDC)

Power supply

Main voltage

Physical

Dimension (W D H) Net Weight Cross Weight

Supports FAT 16 and FAT 32, Supports VFAT (long file name), Supports multi-partion up to 1 Supports sample rates 8KHz, 32KHz, 11.025KHz,

22.05KHz, 44.1KHz, 12KHz, 24KHz, and 48KHz. Supports bit rate 8 to 320 kbps and VBR (Variable Bi Rate) except free format Frequency Response 20Hz~20KHz Output level 0 dB S/N Ratio > 90 dB Distortion (at 1 KHz) <0.05%

<0.1% (at 1W & 1 KHz) <0.15% (at 100W & 1 KHz) 20Hz to 22kHz, +/-2dBu (at 100W)

100 dBu

30.5dBu +/-1dBu (+10 Led Light & COMP.Start) 2X200W@4 2X110W@8 2X250W@4 2X130W@8 over-temperature power limiting thermal shutdown Temperature controlled 12V DC fan output short-circuit protection overload output protection over voltage protection DC offset shutdown

2 -way Coax vented box 150W AES standard (each speaker) 300W Peak (each speaker)

117.5dB SPL calculated 65Hz-20KHz at -10dB 8 nominal

2.3KHz/12dB/Oct Electronic on the Driver 10 Woofer / 2 Voice Coil 1 Neodymium Driver / 1 Voice Coil 70 Hx70 V Spherical hom Power Input with mono Jack

32W

1500VAC at Test,Frequency 50/60Hz,Leakage Current:5mA for 1minute 3000VAC at Test,Frequency 50/60Hz,Leakage Current:5mA for 1minute

100-120VAC~60Hz 220-240VAC~50Hz 100~120V: T10A 250V 220~240V: T5A 250V

984mm*440mm*460mm (38.7 x17.3 x18.1 )

19.61kg

25.41kg

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.

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

Be aware of all warnings reported

with this symbol.

Keep this Equipment away from water and moisture.

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

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

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

periods of time or during a storm.

Refer all service to qualified service personnel

only.Donotperformanyservicingotherthan 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.

Move this Equipment only with a cart,

11.

stand, tripod, or bracket, specified by the manufacturer, or soldwiththe 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 SPL EXAMPLE

Small gig

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.

train

Subway train

High level desktop monitors

Classic music concert

100 102 105 110 115

Rock concert

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IN THIS MANUAL

8. TECHNICAL SPECIFICATION

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

2. FEATURES.......................................................................................2

3. QUICK START..................................................................................2

4. CONTROL ELEMENTS......................................................................3

5. INSTALLATION & CONNECTION......................................................14

6. BLOCK DIAGRAM...........................................................................16

7. PRESET LIST..................................................................................17

8. TECHNICAL SPECIFICATIONS..........................................................18

9. WARRANTY..................................................................................20

1. INTRODUCTION

Congratulations! Now you are the owner of the OEX-400S. The OEX-400S is a plastic reinforced trolley that includes a versatile mixer with DSP effects, L&R full range speaker cabinets. Besides, this package also includes some essential accessories such as power cord, signal cables, speaker cables. In order to ensure high versatility and excellent audio performances, the OEX-400S adopts optimal crossover frequency and advanced power amplifier technologies.

The L&R speaker cabinets are tightly hooked on the trolley. When you operate the OEX-400S, first of all take care of the setting of the L&R cabinets . It is the development of ALTO's experience and knowledge in speakers field, in order to faithfully reproduce sound for each kind of applications.

Inlaid in OEX-400S panel there's a compact extractable 8-channel mixer, which adopts 24-bit A/D&D/A converters and 24-bit DSP effects with accurate algorithms (16 presets). It also provides 4 MIC inputs with ultra low noise microphone pre-amplifiers, natural 2-band EQ; AUX send/return and 2TK in/out and optional MP3 and 9 band EQ and so on.

In a word, it is ideally suited for live sound applications, small venues applications, live recording and many other musical purposes. In order to get the best performances from your OEX-400S, we recommend you to thoroughly read this owner's manual before installation and operation.

1 18

Mono channels(CH1-CH4)

Microphone Input

Frequency Response: Distortion( THD&N) Sensitivity Maximum Voltage Gain

SNR( Signal to Noise Rate ) Phantom power Line Input Frequency Response: Distortion( THD&N) Sensitivity Maximum Voltage Gain

Stereo channels(CH5/6)

Line Input SNR( Signal to Noise Rate ) Frequency Response: Distortion( THD&N) Sensitivity Maximum Voltage Gain

Impedance

Microphone Input All Other Input Tape Out All Other Outputs

Equalization

High( )Mono channels High(Stereo channels) Low(Mono channels) Low(Stereo channels)

DSP Section

A/D And D/A Converters DSP Resolution Type of effects

Presets Controls

Crosstalk

Adjacent Input Input to Output

Main Mix Section

TRACK,Aux,Phones Output

Master Output(to AMP) Main EQ(Option) Noise (Bus noise)

Compressor

Threshold Ratio

Mp3 Section(Option)

USB HOST

Electronically Balanced, discrete Input Configuration(SW to MIC) 20Hz to 22kHz, +/-2dBu

0.02% At 1kHz

-30 dBu 51 dB CH MIC INPUT HEAD PHONE OUT 51 dB CH MIC INPUT TAPE OUT 51 dB CH MIC INPUT FX SEND

100 dBu +45V~+49V with switch control (Mic Pin2/Pin3 And Pin1) Electronically Balanced(SW to LINE) 20Hz to 22kHz, +/2dBu

0.02% At 1kHz 0dBu 21 dB CH LINE INPUT TAPE OUT

Electronically Balanced(SW to LINE)

100 dBu 20Hz to 22kHz, +/-2dBu

0.02% At 1kHz 0dBu 20 dB FX RETURN TAPE OUT 20 dB RCA TAPE INPUT TAPE OUT

3.9k Ohms 10k Ohms or Greater 1k Ohms 120 Ohms

15 dB @12 kHz 15 dB @12 kHz 15 dB @80 Hz 15 dB @80 Hz

24 Bit 24 Bit WARM HALL, BRIGHT HALL, WARM ROOM, BRIGHT ROOM, VOCAL1, VOCAL2, VOCAL3, PLATE, STEREO DELAY1, STEREO DELAY2, REV+DELAY1, REV+DELAY2, REV+DELAY3,REV+DEALY4,REV+CHORUS1,REV+ CHORUS2 16 16-Posistion PRESET Selector CLIP LED MUTE SWITCH with LED Indicator

-75 dB @ 1KHz (CH1-6)

-70 dB @ 1KHz (STEREO L/R,CH1-4,PAN:panned hard

left or right)

Output level 0dBu Unbalanced, 1/4" Jacks Max out +22dBu Unbalanced, 1/4" Jacks Output level -5dBu (CN10,CN11) +/-12dB @ 9 bands(63,125,250,500,1K,2K,4K,8K,16KHz)

-78dB @ 20Hz~22KHz (channel & MAIN level at 0dB,

other at minimum,DSP mute)

7dBu 6:1

"Builds in the USB FULL speed(12Mbps)HOST control function" Supports the USB mass storage class

Page 5

7. PRESET LIST

NO. Preset Description

WARM HALL

BRIGHT HALL

WARM ROOM

BRIGHT ROOM

VOCAL 1

VOCAL 2

VOCAL 3

PLATE

STEREO DELAY 1

STEREO DELAY 2

REV+DELAY 1

REV+DELAY 2

REV+DELAY 3

REV+DELAY 4

REV+CHORUS 1

REV+CHORUS 2

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.

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.

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

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

2. FEATURES

Lightweight, Luggage style, Trolley appearance portable system Two 10" speakers + 8-channel powered mixer in super combination Stereo full-range speaker system 4 XLR MIC input with ultra low noise microphone pre-amplifiers +48V Phantom power 1 stereo LINE input & 1 stereo CD/TAPE input Warm, natural 2-band EQ , PAN(BAL) for each channel Precision level control 24-bit DSP effects with powerful algorithms (16 presets) MP3 player & 9-Band EQ for option 2 speaker cables&2microphone and cables Amp. System with 250W *2 @ 4ohm in EIAJ; 200W*2@4ohm in RMS

3. QUICK START

This is the fastest way to get something out from your OEX-400S, if you have a keyboard and a microphone.

a. Please check the AC voltage available in your country before connecting your

OEX-400S to the AC socket.

b. Be sure that the main power switch is turned off before connecting the

powered mixer 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 as well as excessive noise.

c. Please connect a passive speaker to your OEX-400S speaker connector or

1/4'' jack(#35). Otherwise, you can connect a pair of active speakers directly

to your OEX-400S Main Out Left & Right 1/4'' jacks(#18). d. Complete these connections as illustrated. e. Before disconnecting the OEX-400S always turn-off the Power switch. f. Do not use solvents to clean your OEX-400S. A dry and clean cloth will be OK.

Here you are. It is your first GIG with your .OEX-400S

17 2

Page 6

GIG HOOKUP DIAGRAM

6. BLOCK DIAGRAM

USB key

MP3 PLAYER

PHANTOM

(CH1-4)

OFF ON

RIGHT

LEFT

MIC MIC MIC MIC

LINE LINE LINE LINE LINE

MIC1

MIC2

OEX-400s

-15 +15 -15 +15 -15 +15-15 +15-15 +15

DSP

/FX

RIGHT

LEFT

MIC/LINEMIC/LINE

- - ---

LEFT

- - ---

LEVEL LEVEL LEVELLEVELLEVEL

MIC/LINE MIC/LINE

WIRELESS

MICROPHONE

MP3 USB REP

EQ EQ EQEQEQ

HI HI HIHIHI

LOW LOW LOWLOWLOW

DSP /FX

POST POST POSTPOSTPOST

+10 +10 +10+10+10

PAN PAN BALPANPAN

RIGHT

+10 +10 +10+10+10

ALL

03:08

RIGHT

LEFT

WARMHALL

STEREO+DELAY1

PRESETS

MUTE

DSP

24 Bit digital effects

LRIN

LOUTR

CD/TAPE

BRIGHTHALL

WARMROOM

BRIGHTROOM

VOCAL1

VOCAL2

VOCAL3

PLATE

POWERPEAK

+10

LEVEL

MASTER

PHONES

(MIN.LOAD 4 Ohms)

SPK.OUT

OUTPUT

LEVEL

+10

-10

-30

HEADPHONE

SPEAKER

DAT

REV+CHORUS2

REV+CHORUS1

REV+DELAY4

REV+DELAY3

REV+DELAY2

REV+DELAY1

STEREO+DELAY2

DSP

/FX

RIGHT

LEFT

0+10

FXRET LEVEL

(MP3)

LEFT(MONO)

FXRETURNS

RIGHT

FXSEND

5/621

DAT OR TAPE RECORDER

DIGITAL EFFECT UNIT

BASS

KEYBOARD

3 16

Page 7

5. INSTALLATION AND CONNECTION

Ring=Return Signal (Connected together)

To Channel Insert

Sleeve=Ground/Screen

OEX-400S

OPTION

Sleeve=Ground/Screen

(Enables the Insert to be used as a Direct Output

while maintaining the channel signal flow)

Sleeve

Tip=Signal

'Tapped' Connection Direct Output Lead

Sleeve=Ground/Screen

Tip

Ring

Ring=Return Signal

Tip=Send Signal

To Tape or FX Input

To Processor Input

To Channel Insert

To Processor Output

PHANTOM

(CH1-4)

OFF ON

RIGHT

LEFT

MIC MIC MIC MIC

LINE LINE LINE LINE LINE

OEX-400s

EQ EQ EQEQEQ

HI HI HIHIHI

-15 +15 -15 +15 -15 +15-15 +15-15 +15

LOW LOW LOWLOWLOW

-15 +15 -15 +15 -15 +15-15 +15-15 +15

DSP /FX

POST POST POSTPOSTPOST

PAN PAN BALPANPAN

RIGHT

LEFT

ALL

03:08

DSP /FX

DSP

/FX

RIGHT

LEFT

MIC/LINEMIC/LINE

- - ---

+10 +10 +10+10+10

RIGHT

LEFT

- - ---

+10 +10 +10+10+10

LEVEL LEVEL LEVELLEVELLEVEL

MIC/LINE MIC/LINE

MP3 PLAYER

MP3 USB REP

Option NO.1

WARMHALL

STEREO+DELAY1

PRESETS

MUTE

DSP

24 Bit digital effects

LRIN

L OUT R

CD/TAPE

BRIGHTHALL

WARMROOM

BRIGHTROOM

VOCAL1

VOCAL2

VOCAL3

PLATE

POWERPEAK

+10

LEVEL

MASTER

PHONES

(MIN.LOAD 4 Ohms)

SPK.OUT

OUTPUT

LEVEL

+10

-10

-30

REV+CHORUS2

REV+CHORUS1

REV+DELAY4

REV+DELAY3

REV+DELAY2

REV+DELAY1

STEREO+DELAY2

DSP /FX

RIGHT

LEFT

0+10

FXRET LEVEL

(MP3)

LEFT(MONO)

FXRETURNS

RIGHT

FXSEND

5/621

16K

8K4K

+12

-4

-8

-12

USB Connection

Y-Stereo lead for insert Connection

(To be used when the processor does not employ a single jack connection for the In/Out Connections)

EQ OFF EQ ON

+12

-4

-8

-12

500250125

STEREO GRAPHIC EQ

Option NO.2

15 4

Page 8

4. CONTROL ELEMENTS

5. INSTALLATION AND CONNECTION

Accessory List:

1 Power cord 1 IEC power cord 2 Customized Speaker Cable 2 7m 3 MIC 2 5m 4 F-8 stands (optional) 5 F-3 stands (optional) 6 F-3 stand adaptor (optional)

1 2

PHANTOM

(CH1-4)

OEX-400s

OFF ON

-15 +15 -15 +15 -15 +15-15 +15-15 +15

DSP

/FX

- - ---

RIGHT

LEFT

- - ---

LEVEL LEVEL LEVELLEVELLEVEL

MIC MIC MIC MIC

LINE LINE LINE LINE LINE

MIC/LINE MIC/LINE

MIC/LINEMIC/LINE

345/621

WARMHALL

EQ EQ EQEQEQ

BRIGHTHALL

REV+CHORUS2

WARMROOM

REV+CHORUS1

HI HI HIHIHI

BRIGHTROOM

REV+DELAY4

VOCAL1

REV+DELAY3

VOCAL2

REV+DELAY2

REV+DELAY1

VOCAL3

STEREO+DELAY2

PLATE

LOW LOW LOWLOWLOW

STEREO+DELAY1

PRESETS

POWERPEAK

DSP

/FX

POST POST POSTPOSTPOST

OUTPUT

MUTE

LEVEL

+10

+10 +10 +10+10+10

PAN PAN BALPANPAN

DSP

24Bitdigitaleffects

-10

+10

RIGHT

LEFT

LEVEL

-30

MASTER

+10 +10 +10+10+10

0+10

FXRET LEVEL

PHONES

(MP3)

LRIN

LEFT(MONO)

FXRETURNS

(MIN.LOAD4Ohms)

RIGHT

FXSEND

LOUTR

CD/TAPE

SPK.OUT

Audio Connections

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

Tip

Strain Clamp

Sleeve

Ring

Use for Headphone

1/4" Stereo (TRS) Jack Plug

Tip

Sleeve

Sleeve=Ground/Screen

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

1/4" Mono (TS) Jack Plug

Tip

Sleeve

Ring

Ring=Right Signal

Tip=Left Signal

Sleeve=Ground/Screen

Tip=Signal

Ring=Return Signal

Tip=Send Signal

Sleeve=Ground/Screen

Use for Insert Points

1/4" Stereo (TRS) Jack Plug

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)

2=Hot(+)

(For unbalanced use, leave pin3 unconnected)

3=Cold(-)

Use for Main output

3-pin XLR Line Socket

(seen from soldering side)

1=Ground/Screen

5 14

Page 9

4. CONTROL ELEMENTS

9 BAND EQ selective mode

500250125

+12

-4

EQOFF

-8

EQON

-12

STEREOGRAPHIC EQ

16K

8K4K

+12

-4

-8

-12

CN7

EQ MODULE

CN9

Please connect the 8PIN row-wire on the 9BAND EQ model to the CN9 header on the main mixer board. Then fix the 9BAND EQ model on the mixer panel with two screws.

34 POWER ON/OFF

This switch is used to turn the main power on/off.

35 AC SELECT

Before connecting the OEX-400S to the mains supply first check that the Voltage Selector is showing the correct voltage for your country.

36 AC INLET

This jack is used to connect the unit to the mains with the enclosed power cord. (Depends on applicable country regulators)

3534 36

POWER

AC SELECT

OFF

AC INPUT

100-120V~60Hz FUSE: T10AL 250V 220-240V~50/60Hz FUSE: T5AL 250V

1 PHANTOM POWER Switch

This button will apply +48 Volt Phantom Power only to the 4 XLR MIC input sockets. When condenser microphones are not used,

PHANTOM

(CH1-4)

OFF ON

please make sure that the Phantom Power is disengaged. NOTE: When switch on/off the phantom power, please firstly turn the level control knob to min.

2 MONO INPUT CHANNELS(CH1 TO CH4)

There is CH1 through CH4, 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. Use the 1/4" TRS (LINE IN) jack to connect either a microphone or a line level instrument such as synthesizers, drum machines, effect processors or any other line level signal. NOTE: Never try to connect a line-level signal to the XLR MIC input when the phantom power is engaged or you may seriously damage your equipment.

3 STEREO INPUT CHANNEL(CH5/6)

These are channels 5/6. They are organised in stereopair and provided with 1/4" TRS phone sockets. If you connect only the left jack, the input will operate in mono mode, that is the mono signal will appear on both input channels. You can use these inputs with a stereo keyboard, drum machine, etc.

4 MIC / LINE switch

When using XLR socket, please put the switch at the MIC position; When using 1/4'' TRS jack, please put the switch at the LINE position.

5 MP3/LINE switch

Pushing this switch to left will route the signal from MP3 IN to CH5/6 path, while to right will route the signal from 1/4'' TRS jack.

6 LEVEL CONTROL

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

13 6

Page 10

4. CONTROL ELEMENTS

7 PAN/BAL CONTROL

This is the PANORAMA control, or balance control. You can adjust the stereo image of the signal via this control. Keep this control in center position and your signal will be positioned in the middle of stage. Turn this control fully counter clockwise and the signal will be present only on the left speaker and vice-versa. Of course a large number of intermediate positions is available.

8 DSP/FX control

This control is configured as POST-FADER, so the audio signal will be affected by channel level control. Via the FX SEND socket, the AUX1 signal can be sent to an external effect device.

EQUALIZER

Your OEX-400S features a 2-band equalizer allowing you to adjust the high and low frequencies separately on each mono channel. Both bands provide up to +15dB of boost or cut.

9 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.

10 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.

MP3

NORMAL

When the player is searching for Mp3 songs, the interface is as follows:

NORMAL

When the player is in pause state, the interface is as follows:

MP3 USB ERP

ALL

ooo

NORMAL

When the player is in use, the interface is as follows:

MP3 USB ERP

ALL

ooo

NORMAL

MP3 and 9 BAND EQ selective mode section(Option) No selective mode

JUMPER

CN7

CN9

At normal state, there is no selective mode on the front panel, only a piece of panel without any painting and function. But there are two selective modes for

what you like, that is MP3 mode and 9 BAND EQ mode. Please note that on the main mixer board, there is a short circuit row-wire in the CN9 header.

Mp3 selective mode

MP3 PLAYER

MP3 USB REP

03:08

ALL

MP3 MODULE

CN7

JUMPER

CN9

Please connect the 5PIN row-wire on the MP3 model to the CN7 header on the main mixer board. Put the provided 8PIN short circuit row-wire in the CN9

DSP SECTION

Your OEX-400S features the special 16-preset digital effect, further details

header on the main mixer board. Then fix the MP3 model on the mixer panel with two screws.

please refer to following content.

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Page 11

4. CONTROL ELEMENTS

USB PORT

For connecting with USB memory.

In pause state, press this button it will go to the previous song and keep in pause state. In play state, press this button it will go to the previous song and start playing.

In pause state, press this button it will go to the next song and keep in pause state. In play state, press this button , it will go to the next song and start playing.

REPEAT

Press this button the player will change between the following four modes. REP ALL means to repeat all songs in the memory, the mark on the screen is

REP1 means to repeat one song, the mark on the screen is Play in order

means to play the songs according to the order, the mark on the screen is blank. Random play means to play the songs at random, the mark on the screen is A.

PLAY/PAUSE

In play state, press PLAY/PAUSE button to pause the player. In pause state, press PLAY/PAUSE button to start playing.

STOP

In play state, press STOP button to stop playing and the whole quantity of Mp3 songs in the USB memory will display on the screen. In STOP state, press the PRE/NEXT button or press the STOP button again to go to the first songs and the player will keep in pause state, then press down the PLAY/PAUSE button to play it.

POWER

When the unit is off, press this button and hold for about 2 or 3 seconds to turn on the power supply of the player. Repeat the above operation, you can turn off the power supply of the player.

NOTE: Basic interface instruction.

When the player isn't connected to a USB memory equipment, the interface is as follows:

11 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.

12 PEAK/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.

13 DSP MUTE SWITCH

This switch is used to activate/deactivate the effect facility.

POWER

OUTPUT

LEVEL

+10

LEVEL

MASTER

PHONES

+10

-10

-30

all

0+10

FX RET LEVEL

LRIN

(MIN. LOAD 4 Ohms)

SPK.OUT

2422

14 POWER LED

FX RETURNS

FX SEND

LOUTR

CD/TAPE

When you switch on the apparatus,the LED will light on.

15 MASTER LEVEL CONTROL

This control is used to adjust the overall volume of main mix output, and the signal also input to the preamplifier.

16 MASTER LEVEL LED

The 4-segment LED metre is used to indicate the master output level. When the red LED lights on, it means that the MIX OUT reaches +10dB, or start the compressor from the build in AMP.

11 8

Page 12

4. CONTROL ELEMENTS

17 FX RTN. Jack

Use the stereo phone jack to return the sound of an effect unit to the main mix. You can also use it as a extra auxiliary stereo input.

18 FX RET CONTROL

This control is used to control the volume of the processed signal sent to Main Mix bus, which can be varied from - to+10 dB.

19 FX SEND

This jack is used to send out the signals from AUX bus.

20 CD/TAPE IN

Use the Tape input to connect a CD Player, Tape, DAT, iPOD or any other linelevel source.

21 CD/ TAPE LEVEL CONTROL

This knob controls the signal sent from CD/TAPE IN,which can be varied from

- to+10 dB.

22 CD/TAPE OUT

These RCA jacks will route the main mix signal into a tape or DAT recorder.

23 PHONES

This socket will be used to send the signal to a pair of headphones.

24 SPK. OUT

The SPEAKER L&R phone jacks output the main signal from the internal power amplifier and are used to connect speakers. They are internally connected in parallel and output the same signal.

Connecting two speakers

9 Band EQ section (Optional)

25 EQ Switch

Engage this button to add the stereo graphic EQ to the main mix output circuit.It can be used to modify the frequency "contour" of a sound. If you release the button, the stereo graphic EQ will be bypassed.

26 STEREO GRAPHIC EQ

Each one of these faders will boost or attenuate (+/-12 dB) the selected frequency at a preset bandwidth. When all the faders are in the cent r position, the outpute of the equalizer is flat response.

16K

8K4K

+12

-4

-8

-12

EQ OFF EQ ON

+12

-12

-4

-8

STEREO GRAPHIC EQ

500250125

MP3 section (Optional)

The file system of USB memory for USB-MP3 player is FAT16 and FAT32. The player can only decode MP3. It can have 7 rank subordinate folders at most, and the maximum quantity of folders within MP3 files is 24. In the whole USB memory, the total folders can not beyond 256(incluing those folders without MP3 songs).

2728 29 30

MP3 PLAYER

MP3 USB REP

ALL

03:08

4~8

Note: The total impedance of the connected speaker system must be between

3231 33

4 and 8 ohms. Do not connect anything other than speakers to these jacks.

9 10

Alto Professional OEX-400S USER'S MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual