Alto Professional OEX900 USER'S MANUAL

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OEX900

User's Manual

LTO

www.altoproaudio.com

Version 1.3 October 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.

Fuse

To prevent fire and damage to the product, 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.

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.

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.

Disposing of this product should not be placed in municipal waste and should be Separate collection.

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.

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.

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.

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.

TABLE OF CONTENTS

1. INTRODUCTION ...................................................................................................................................3

2. ...................................................................................................................................FEATURES .........3

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

4. CONTROL ELEMENTS .................................................8.......................................................................

5. PRESET LIST ................ ........................................................................ .............................................12

6. OEX900 WIRING GUIDE ................ ........................................................................ ............................13

7. TECHNICAL SPECIFICATIONS ........................................................................................................14

8. WARRANTY ........................................................................................................................................16

1. INTRODUCTION

Congratulations! Now you are the owner of the OEX900 . The OEX900 is a plastic reinforced trolley that includes a versatile mixer with DSP effects, L&R full range speaker cabinets and sub-woofer, and some essential accessories such

as power cord, signal cables, speaker cables, and speaker stands. The OEX900 adopts an optimal crossover network and advanced power amplifier technologies, which ensures its incredible versatility and excellent audio performances.

The L&R speaker cabinets are tightly hooked on the trolley . When you operate the OEX900, take care of the setting of the L&R cabinets first. It is the development of ALTO's experience and knowledge of speaker technology, in order

to create a system which can faithfully reproduce sound for each kind of applications.

The sub-woofer is built in trolley. It contains a 15" low speaker, which delivers a natural and powerful sound and that

will bring you unprecedented low frequency emission.

Inlaid in OEX900 panel there's compact extractable 8-channel mixer, which uses 24-bit A/D&D/A converters and 24bit DSP effects with accurate algorithms (256 presets). It also provides 6 MIC inputs with ultra low noise microphone pre-amplifiers and+48V PHANTOM power at as well as warm, natural 3-band EQ; AUX send/return and 2TK in/out

and so on.

In a word, it is ideally suited for live sound applications, small venues applications, recording and other musical purposes.

In order to get the best from your OEX900, we recommend you to thoroughly read this owner's manual before installation and

operation.

2. FEATURES

Trolley appearance 2(two-way satellites) + 1(subwoofer) + 1 (8-channel mixer super combination) Three-way full-range speaker system with 15" subwoofer

6 XLR MIC input with ultra low noise microphone pre-amplifiers and PHANTOM power+48V

2 stereo LINE input Warm, natural 3-band EQ for each channel Precision level control 24-bit DSP effects with powerful algorithms (16 presets with16 variations each) Extremely high headroom offering excellent dynamic range Plastic reinforced cabinet (polypropylene) High power output with (L&R speaker) / (subwoofer)150 *2 150 *2WW Two 7 m speaker cables Two F8 folding speaker stands Compartment for storing F8 folding stands, speaker cables, signal cable and power cord etc.

Accessory List:

Folding speaker stands 2 F8 Power cord 1 IEC power cord Signal cable 1 2m Customized Speaker Cable 2 7m

In following picture you see OEX900 most important components.

High quality L&R full range speaker cabinets Powerful sub-woofer Versatile multi-channel mixer

3. QUICK START

Though the OEX900 looks like a super formidable giant, you don't have to worry about how to carry it. As the OEX900 is equiped with two wheels, you can think of it as a trolley. Seeing is believing. Operating this unit, you will find that it is really versatile and user-friendly. Following steps will give you a guide line to set up your OEX900.

Note: Make all initial connections with the system powered off, and, in order to avoid damaging your speakers and

excessive noise, with main mix volume control of the mixer completely turned down. First of all extract the F8 folding speaker stands from their compartment, as shown in Fig.1. Then, as shown in

the L&R speaker cabinets from the trolley in the right direction, unsuitable operation may damageFig.2, unhook,

your equipment. In order to prevent equipment damage, please place the speaker stands on a solid, even surface.

Fig.1 Fig.2

Fix the L&R speaker cabinets on stands. as shown in Fig.3. Note: In order to avoid feedback, please position the speakers facing the audience and far away from the microphone.

Fig.3

Then, position the sub-woofer(trolley). Please be careful about this step, as shown in above Fig.4 proper

position will allow the sub-woofer to develop his full power and sound character.

Depending on application requirements, you can disassemble or not the mixer from the trolley. For this application 2m. signal cable is available, as shown in following Fig.5.

Fig.5

Fig.4

After that, set up the system.

Note: During this step too the system must be powered off, and , in order to avoid damaging your speakers and/or to produce noise the mixer main volume control should be competently turned off.

Connect one side of the speaker cable to the left/right power outputs (speakon connectors) of system, and the other side to the left/right speaker cabinets (speakon connectors), as shown in Fig.6.

Warning! Do not connect additional speakers to the powered output. The supplied system speakers provide a perfect load for the built-in amplifier.

Fig.6

Make sure that the mixer has been connected to the system by using the appropriate connector and the

customized cable, as shown in Fig.7.

Fig.7

Connect Microphone, CD, Tape or MD player (Line sources) etc. to the appropriate MIC/LINE mixer input connectors (XLRor1/4"TRS jacks), as shown in Fig.8.

Fig.8

Now you can turn on the power switch.

Turn up the volume control, use the PFL function to get the proper input level for each mixer channel, then adjust

the main mix level control to manage the output level.

At the end of your session, put all your levels to zero, turn off your system, then collect all the cables and put them back in their places all accessories into assigned storage compartment. Finally, lay the speakers face down on top of trolley and secure the six latches. Now the OEX900 is ready to be carried everywhere.

OEX900

Stand

VOCAL

Fig.9

Stereo program source

Such as CD player, MD Player or other Line sources...

Stand

4.CONTROL ELEMENTS

(3) (17)

(20) (19)

(23)

(21)

(22)

(24) (27)

(25)

(26)

CH 1

CH 2

CH 3

CH 4

CH 5-6

CH 7-8

MIC IN (bal.)MIC IN (bal.)

MIC IN (bal.)

TAPE

OUT

J.T.

RTN

OUT

RIGHT

MAIN OUT

RIGHT

HEADPHONE

STEREO

MONITOR OUT

(8)

+10dB

(7)

Left

Right

PAN

Left

Right

PAN

Left

Right

PAN

Left

Right

PAN

Left

Right

BAL

Left

Right

BAL

12. FLANGER

13. CHORUS

15. FLANGERREV.+

14. REV.+ DELAY

16. REV.+ CHORUS

0dB

+10dB

DSP/FX

POST

AUX2

0dB

+10dB

DSP/FX

POST

AUX2

0dB

+10dB

DSP/FX

POST

AUX2

0dB

+10dB

DSP/FX

POST

AUX2

0dB

+10dB

DSP/FX

POST

AUX2

0dB

+10dB

DSP/FX

POST

AUX2

11.STEREO DELAY

10. MONO DELAY

2. VOCAL2

1. VOCAL1

3. LARGE HALL

4. SMALLHALL

6. SMALLROOM

7. PLATE

8. TAPEREVERB

9. SPRING REVERB

5. LARGE ROOM

160

400

2.5K

6.3K

16K

-30

LEVEL

-10

+10dB

DFX MUTE

PEAK

MONITOR

+10dB

-15dB

0dB

+15dB

MON

AUX1

PRE

-15dB

0dB

+15dB

MON

AUX1

PRE

-15dB

0dB

+15dB

MON

AUX1

PRE

-15dB

0dB

+15dB

MON

AUX1

PRE

-15dB

0dB

+15dB

MON

AUX1

PRE

-15dB

0dB

+15dB

MON

AUX1

PRE

VARIATIONS

160

400

2.5K

6.3K

16K

LEVEL

(4)(2)(1)

LINE IN

(bal.)

LINE IN

(bal.)

LINE IN

(bal.)

LINE IN

(bal.)

PAD

AUX2

OUT

2TK IN

MAX

LEFT

-20 dB

(MONO)

-20 dB

(MONO)

CH7-8

MAIN

OFF

LEVEL

-20 dB

+10dB

PAD

LEVEL

-20 dB

+10dB

PAD

LEVEL

-20 dB

+10dB

PAD

LEVEL

-20 dB

+10dB

PAD

LEVEL

+10dB

LEVEL

+10dB

AUX/DFX RET

FOOT

SW.

TAPE TO

MAIN

PHANTOM

48V

(5)(6)

-15dB

0dB

+15dB

2.5KHz

LOW

80Hz

LOW

MID

-15dB

0dB

+15dB

2.5KHz

MID

-15dB

0dB

+15dB

2.5KHz

MID

-15dB

0dB

+15dB

2.5KHz

MID

-15dB

0dB

+15dB

2.5KHz

MID

-15dB

0dB

+15dB

2.5KHz

MID

PRESETS

0dB

+15dB

12KHz

HIGH

-15dB

0dB

+15dB

12KHz

HIGH

-15dB

0dB

+15dB

12KHz

HIGH

-15dB

0dB

+15dB

12KHz

HIGH

-15dB

0dB

+15dB

12KHz

HIGH

-15dB

0dB

+15dB

12KHz

HIGH

DSP

(16) (14)

(13) (15) (18)

LTO

-10

-30

OPERATING

(12)

(10)

(11)

(9)

(1). MIC IN

These electronically balanced XLR sockets have been designed to accept microphone signals, providing low noise microphone pre-amplifier, as well as phantom power for condenser microphone by pressing the PHANTOM

power switch.

Note: You shall never connect an unbalanced microphone to the XLR socket if you don't want to damage both the microphone and mixer.

(2). LINE IN

These balanced 1/4"TRS jacks have been designed to accept line level inputs such as keyboards outputs, CD, players, MD/tape outputs, etc...

(3). Stereo Input

This channel is equipped with two 1/4" TRS jacks for stereo input. Connecting the left input jack only, the input will operate in mono mode. Furthermore, it also provides the XLR connector for MIC input. The OEX900 is provided with two stereo channels.

(4). 20dB PAD

Pressing this button the input signal will be attenuated by 20dB. In such way you'll obtain increased headroom and you"ll reduce the risk of distortion due to input level peaks with too high input signal.

(5). Equalizer

Each channel is equipped with 3-band warm, natural EQ: HI, MID and LOW bands will allows you to shape the sound of program material in a very efficient way. HI Treble control. You can use it to get rid of high frequency noises or to boost the sound of cymbals and human voice higher harmonics. The gain range can be varied from -15dB to +15dB with a center frequency of 12kHz. MID Midrange control. It can affect most fundamental frequencies of all musical instruments and human voice. A careful use of this control will give you a very wide panorama of sound effects. The gain range can be varied from

-15dB to +15dB with a center frequency of 2.5kHz. LOW Bass control. It can boost male voice or kick-drum and bass guitar. Your system will seem much bigger than it really is. The gain range can be varied from -15dB to +15dB with a center frequency of 80Hz.

(6). AUX Sends

Both these controls are used to adjust the level of signal sent to AUX buses. These sends contrals are adjustable in - to +15dB.The MON (AUX1) control is configured PRE-FADER, it means that its signal is independent by channel fader setting. It is suited to be used as monitor mix in a live sound mixing, or for a headphone mix in recording application. The(AUX2) control is configured as POST-FADER, it means that the audio signal will be affected by channel fader settings. This signal is assigned to onboard DSP(digital effects module). Via AUX2 OUT connector the AUX2 signal can be sent to an external effect device.

(7). PAN/BAL Control

The pot controls the channel's position between left and right in the stereo bus. Of course you can use it to"move" the channel signal in stereo front to create spatial effects as well as.

(8). LEVEL Control

This pot provides smooth control over levels.

(9). OPERATING LED Display

The LED indicates when OEX900 power is switched ON.

(10). Graphic EQ

OEX900 is provided with two graphic EQs, one for MAIN MIX, the other for MONITOR MIX. These graphic EQ have 7-band fader controls. Via these faders, you can boost or attenuate the selected frequency by 15dB at a preset bandwidth. frequency "contour" of sound, to adapt it to your musical taste andThey are used to modify the

ambient characteristics. When all faders are at the center position, the equalizer has flat response.

(11). MONITOR LEVEL Control

This control adjusts the level of monitor output by a range of - to +10dB.

(12). MAIN LEVEL Control

By rotating this pot you'll simultaneously adjust the overall volume of the left and right main mix outputs in

to +10dB.-

(13). PRESETS Control (DSP Section)

Adjust this knob to select the effect you wish to perform. There are 16 options available: several kinds of reverb, mono and stereo delay, modulation effects, and versatile two-effect combinations.

(14). VARIATIONS Control

This control provides 16 variations for each preset, each variation has been designed modifying several parameters. For further details, please refer to chapter 5.

(15). PEAK LED

This LED is lit when the DSP input signal is too strong. This LED is lit when the DSP is muted too.

(16). DSP MUTE Switch

This switch serves to activate/deactivate the built-in effect section. For your convenience you can also use the FOOT SW for this operation.

(17). FOOT SW. Jack

This 1/4" phone jack can be used to connect an external foot-switch to turn on/off the built-in effect module.

(18). AUX/DFX RET

This pot adjusts the internal/external effect from 0 to 10.

(19). AUX2 OUT

This 1/4" phone jack outputs AUX2 bus line signal.

(20). STEREO RTN

This1/4" phone jack is used to return the signal of external unit to the main mix. You can also use it as an extra auxiliary input.

(21). TAPE IN/OUT

These RCA connectors are useful to connect the output/input of a DAT, cassette or taper recorder.

(22). TAPE TO Switch

Pushing this switch to left, TAPE IN signal will be routed to CH7-8 path, so the signal will be controlled by

channel level control and main level control. Pushing this switch to right, the TAPE IN signal will be derectly

routed to main mix bus, and its signal will be affected by main level control only.

(23). 2TK IN Control

This pot adjusts the level of 2TK IN signal in - to MAX range.

(24). MAIN OUT

These left and right main mix. You can use these connectors to output the main mixconnectors output signal to external PA system or active speakers.

(25). MONITOR OUT

This1/4" phone jack outputs the signal from MON (AUX1) bus to the input of external monitor amplifier or active monitor speaker.

(26). HEADPHONE OUT

This1/4" stereo phone jack can be used to connect stereo headphones.

(27). PHANTOM Switch

Via this switch, you can turn on/off the +48V phantom power for all microphone pre-amps.

(28). AC INLET with FUSE HOLDER

Standard IEC receptacle, connect your OEX900 to mains with the supplied power cord.

(29). POWER Switch

It switches on/off the OEX900 main power.

(30). Powered Output Connectors

These 4-way speakon type connectors are used to output the powered signal to L&R speaker cabinets. Note: in order to avoid damaging your built-in amplifier, please pay attention to speaker impedance. Lower load impedance is not permitted.

(29) (30)(28)

5. PRESET LIST

No.

VOCAL 1

VOCAL 2

PLATE

TAPE REVERB

Preset

Description

Simulate a room with small delay time.

Simulate a small space with slight decay time.

Simulate a large acoustic space of the sound.LARGE HALL

Simulate a small acoustic space of the sound.SMALL HALL

Simulate a studio room with many early reflections.LARGE ROOM

Simulate a bright studio room.SMALL ROOM

Simulate the transducers sound like classic bright vocal plate.

Simulate a record head and multiple playback heads

at intervals along the tape.

Controllable parameter

Parameter Variable range

Decay time Pre-delay

0.8~1.1s 0~79ms

0.8~2.5s 0~79ms

3.6~5.4s 23~55ms

1.0~2.9s 20~45ms

2.9~4.5s 23~55ms

0.7~2.1s 20~45ms

0.6~6.1s 10ms

1.3~5.4s 0~84ms

SPRING REVERB Simulate the analog transducers' springs lightly

stretched sound.

MONO DELAY

STEREO DELAY

FLANGER

CHORUS

REV.+DELAY

REV.+FLANGER

REV.+CHORUS

Reproduce the sound input on the outputafter a lapse of time.

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

Simulate to play with another person carryingout sam e the notes on the same instrument

Recreate the illusion of more than one instrument from a single instrument sound

Delay with room effect

Stereo chorus and large room reverb

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

Decay time Pre-delay

Period

Period Feedback

Rate

Delay period

Rev. decay time

Flanger Rate Rev. decay time

Chorus rate Rev. decay time

1.3~5.4s 0~35ms

60~650ms

210~400ms 37~73%

0.16~2.79Hz

0.5~5Hz

211~375ms

1.0~2.9s

0.16~2.52Hz

1.5~2.9s

0.5~4.74Hz

1.5~2.9s

6. OEX900 WIRING GUIDE

Defective wiring may degrade the performance of OEX900 product so, please, use good quality screened audio cable. Please follow the descriptions below to connect the OEX900 with external equipment, without experiencing any noise or signal loss.

Model

Mixer

Section

Input/Output

Connector

MIC IN

LINE IN

AUX SEND

TAPE IN

TAPE OUT

Type

XLR

1/4" jack TRS

1/4" jack TS

RCA

Description

PIN1 = Screen / Ground PIN2 = Hot Signal PIN3 = Cold Signal

TIP = Hot RING = Cold SLEEVE = Screen

TIP = Hot SLEEVE = Screen

Diagram

1/4" jack

Ring

TRS Type Balanced

Ring

TRS Type Unbalanced

Tip

Sleeve

TS Type Unbalanced

Tip

Sleeve

Tip

Sleeve

Speaker

Section

Main Output

Section

MIX OUT

HEADPHONE

POWER CONNECTOR

SPEAKER IN

POWERED OUTPUT

1/4" jack TRS

SCM

4-way speaker

connector

4-way speaker

connector

TIP = Hot RING = Cold SLEEVE = Screen

PIN1= AC IN (+18V) PIN2= PGND PIN3= AC IN (-18V) PIN4= OUT - GND PIN5= SUB OUT PIN6= L OUT HI PIN7= R OUT HI PIN8=C-GND

1+,1-,2+,2-

RCA Connector

SCM

XLR connector

Pin3 (-)

Pin1 ( )

XLR Type alancedB

Pin2 (+) Pin3 (-)

(Linked to Pin1 manually, )

Pin1 ( )

XLR Type Unbalanced

Pin2 (+)

7. TECHNICAL SPECIFICATIONS

Mixer Section

Mono input channels

Stereo input channels

Impedances

Equalization

DSP Section

Main Mix Section

Microphone Input

Frequency response Distortion(THD&N)

Gain SNR(Signal to Noise Ratio)

Line input Frequency response Distortion(THD&N)

Gain

Line input

Frequency response

Distortion(THD&N)

Microphone Input

Channel Insert return All other inputs

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

Presets Controls

Noise(Bus noise)

Max output

Controls AUX Sends max out

Electronically balanced, discrete input configuration

10Hz to 55kHz,+/- 3dB

0.04% at +4dBu,1kHz 30dB >94dB Electronically balanced 10Hz to 55kHz,+/- 3dB

0.04% at +4dBu,1kHz 10dB

Unbalanced 10Hz to 55kHz,+/- 3dB

0.04% at +4dBu,1kHz

1.4kOhm

2.5kOhm 10kOhm or greater 1kOhm 120Ohm +/-15dB@12kHz +/-15dB@2.5kHz +/-15dB@80Hz

24bit 24bit Hall,Room,Vocal&Plate REVERBS Mono & Stereo DELAY (max DELAY TIME 650ms) Chorus,Flanger & Reverb MODULATIONS REVERB+DELAY,REVERB+CHORUS, REVERB+FLANGER combinations

256 16-position PRESET selector 16-position VARIATION 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)

+27dBu balanced +22dBu unbalanced, 1/4" jacks

+22dBu

Speaker Section

3-Way Powered System

Low Output Power MID-HIGH Output Power

Peak Power Rating

Max SPL at 1mt Frequency response

Impedance Low-Mid/High Crossover Frequencies

Amplifier Protections Low-Mid/High

Low Frequency Device Mid Frequency Device High Frequency Device

Horn Coverage H x V Plastic Reinforced Cabinet

Physical

Bi-Amp plus passive crossover into Satellite

250W RMS Class H 150W+150W RMS Class AB

1200W Peak

119.5dB Continuous - 122.5dB Peak ( calculated ) 45Hz- 20kHz @ -10dB Low 4ohm - Mid/High 8ohm

Active 125Hz at 12dB/Oct - Passive 3000Hz at 12dB/Oct with Electronic Dynamic Protections.

Soft Start - Short Circuit - DC output voltage

-Thermal Protection - Subsonic Filter at 30Hz - 24dB/Oct. - Limiter / Compressor.

15" / 385mm - 2.5" Voice Coil 2 x 6.5" / 165mm - 1.5" Voice Coil 1" Compression Driver - 1" Voice Coil

80Hx80V Polypropilene

Dimension(W*D*H)

Net Weight Gross Weight

1060*700*700mm

43.04kg

60.04kg

8. WARRANTY

7.1 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.

7.2 RETURN NOTICE

a. 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.

b. 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.

c. A brief description of the defect will be appreciated.

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

3. TERMS AND CONDITIONS

a. 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.

b. 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.

c. 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.

d. 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.

e. 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.

f. 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

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

NF02057-1.3

Alto Professional OEX900 USER'S MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual