Alto Professional MS18S User Manual

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LTO

OWNER'S MANUAL

MS SPEAKER ENCLOSURES

PASSIVE MODELS

www.altoproaudio.com

Version 1.3 SEPTEMBER 2007

English

IMPORTANT SAFETY INSTRUCTION

CAUTION

RISK OFELECTRIC SHOCK

DO NOTOPEN

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

This symbol, wherever used, alerts you to the

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

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

Please read.

Protective Ground Terminal AC mains (Alternating Current)

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

CAUTION

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

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

To prevent fire and damage to the product,

10.

use only the recommended fuse type as indicated in this manual. Do not short-circuit the fuse holder. Before replacing the fuse, make sure that the product is OFF and disconnected from the AC outlet.

WARNING

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

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

MovethisEquipmentonlywithacart,

11.

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

12.

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

HOURS X DAY

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

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

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

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

EXAMPLE

SPL

Small gig

train

Subway train

High level desktop monitors

Classic music concert

100 102 105 110 115

Rock concert

IN THIS MANUAL:

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

2. QUICK START - PASSIVE SPEAKER CABINETS.....................................................2

3. .....................................................................5

LTO MS1 SPEAKER MODELLER

4. PANEL DESCRIPTIONS .....................................................................................6

5. WIRE CONNECTIONS........................................................................................7

6. TECHNICAL SPECIFICATION............................................................................... 8

7. WARRANTY ....................................................................................................11

1. INTRODUCTION

Thank you for your purchasing LTO MS series passive speaker system. This series includes MS series cabinet and LTO MS1 speaker modeller.

The MS series speaker cabinets are specifically designed for using in hi-quality performance site and the precise sound reinforcement commercial place. It includes five full-range cabinets (MS12, MS15, MS152, MS153, and MS154) and two subwoofers (MS15S, MS18S). This series uses trapezium configuration which greatly decreases the resonance of the standing wave in the cabinet. The cabinets use hi-density matrix spray-paint technics and the bottom bracket design which makes mounting quickly and flexibly. HF compression driver and vented LF for fully professional performance.

The LTO MS1 speaker modeller is designed for using together with MS series passive speaker cabinet. It has built-in 16 EQ curves which are suitable for different applications and are convenient for users to select the presets as need. When the nonprofessionals use it, they also can obtain optimal effects. It uses external power which can effectively decreases the power noise. Not only can it be used with the MS series cabinet, but also can be used as a EQ together with the other sound equipments.

Enjoy your MS passive speaker and make sure to read this Manual carefully before operation!

HOOK

2. QUICK START - PASSIVE SPEAKER CABINET

Passive, Full-range, two speakers. This is the simplest set-up. You just need a mixer and a stereo amplifier. It is good for small club gigs, disco,etc. Make all initial connections with all the equipment powered off, and ensure that all the main volume controls are turned down completely.

1). Connect one side of the speaker cable to the Output CHA/CHB or Binding Post of your stereo power amplifier and the other side to the Input socket of your MS speaker cabinet.

2) Connect the input terminals of LTO MS1 with the AUX SEND OUT (L&R) of a mixer (or the similar terminals). Connect its output terminals with the inputs of a power amplifier. Then select the preset as need.

3). Complete other connections as illustrated.

4). Turn on your mixer and MS1 first, then the stereo power amplifier.

5). Turn up the volume controls of your amplifier to about 70%.

6). Use PFL function to get the proper input level for the mixer, and adjust the Main Mix Level control to manipulate the output level.

7). After using, turn off your stereo power amplifier first, then the mixer and the MS1.

STEREO AMPLIFIER

SIGCLIPPROT SIGCLIPPROT

(dB)

CH1

CH2

SPEAKERMODELLER

LTO

MS1

JAZZCLUB+SUB

CLIP

VIRTUALSUB

ACOUSTIC

ROCK&ROLL+SUB

STAGEMONITOR

0dB

JAZZCLUB

LOUDNESS

CONCERTHALL+SUB

ARENA+SUB

CONCERTHALL

DISCO

VOCAL

ANTIRUMBLE

MIN MAX

ROCK&ROLL

DRUMKICK

GAIN

FLAT

INPUT

AUX SEND OUT

MIXER

OUTPUT

POWER

MS1

500W2

HOOK

2. QUICK START - PASSIVE SPEAKER CABINETS

Passive, Full-range, four speakers. It is similar to the previous set-up but four speakers are connected instead of two.

1).Follow the same steps as described above.

2).Connect the THROUGH socket of the first MS cabinet to the INPUT socket of the second MS cabinet.

NOTE: Every time you connect MS cabinets this way, your parallel them to the output of the amplifier that will read half of the impedance of one speaker.

THROUGH

STEREO AMPLIFIER

INPUT

SIGCLIPPROT SIG CLIPPROT

(dB)

CH1

CH2

(dB)

SPEAKERMODELLER

LTO

MS1

CLIP

ROCK&ROLL+SUB

0dB

LOUDNESS

ARENA+SUB

CONCERTHALL

ANTIRUMBLE

MIN MAX

GAIN

MIXER

ACOUSTIC

DRUMKICK

INPUT

OUTPUT

JAZZCLUB+SUB

VIRTUALSUB

STAGEMONITOR

POWER

JAZZCLUB

CONCERTHALL+SUB

DISCO

VOCAL

ROCK&ROLL

FLAT

MS1

AUX SEND OUT

THROUGH

500W 2

HOOK

2. QUICK START - PASSIVE SPEAKER CABINETS

Passive two subwoofers and two satellite speakers. With this example, the stereo amplifier drives both the subwoofers and the satellites. In this case we do not call them full-range anymore because they receive a signal from the subwoofer that is already xovered at 125 Hz. In this way, the high energetic content of the low frequencies is limited to the subwoofer and the satellite's woofer act like a mid-woofer.

1). Connect one side of speaker cable to the Output CHA/CHB or Binding Post of your stereo power amplifier and the other side to the Input socket of your subwoofer, with the second speaker cable connect the Output of the subwoofer to the Input of satellite.

2) Connect the input terminals of LTO MS1 with the AUX SEND OUT(L&R) of a mixer (or the similar terminal). Connect its output terminals with the inputs of a power amplifier. Then select the preset as need.

3). Complete other connections as illustrated.

4). Turn on your mixer and MS1 first, then the stereo power amplifier.

5). Turn up the volume controls of your amplifier to about 70%.

6). Use PFL function to get the proper input level for the mixer, and adjust the Main Mix Level control to manipulate the output level.

7). After using, turn off your stereo power amplifier first, then the mixer and the MS1.

INPUT

OUTPUT

MS SUBWOOFER

INPUT

STEREO AMPLIFIER

SIGCLIPPROT SIGCLIPPROT

(dB)

CH1

CH2

SPEAKERMODELLER

LTO

MS1

JAZZCLUB+SUB

CLIP

VIRTUALSUB

ACOUSTIC

ROCK&ROLL+SUB

STAGEMONITOR

0dB

JAZZCLUB

LOUDNESS

CONCERTHALL+SUB

ARENA+SUB

CONCERTHALL

DISCO

VOCAL

ANTIRUMBLE

MIN MAX

ROCK&ROLL

DRUMKICK

GAIN

INPUT

FLAT

AUX SEND OUT

OUTPUT

POWER

MS1

500W2

INPUT

OUTPUT

INPUT

MS SUBWOOFER

MIXER

SPOTLIGHT

3. LTO MS1 SPEAKER MODELLER

-. THE FRONT PANEL

SPEAKERMODELLER

LTO

MS1

(2)

(1)

CLIP

0dB

MIN MAX

GAIN

ROCK & ROLL+SUB

ARENA+SUB

CONCERT HALL

ANTIRUMBLE

1. Gain Control

This control adjusts the input gain by a range of -20 dB to +20 dB.

2. Clip LED

This LED lights up when the input signal is too strong. It warns that the output signal may cause distortion. Please attenuate the level of the input signal.

3. Presets Selector

Via this knob, you can select the right effect you wish to perform. There are total 16 options for you, JAZZ CLUB+SUB, VIRTUAL SUB, STAGE MONITOR, JAZZ CLUB, CONCERT HALL+SUB, DISCO, VOCAL, ROCK & ROLL, FLAT, DRUM KICK, ANTIRUMBLE, CONCERT HALL, ARENA+SUB, LOUDNESS, ROCK & ROLL+SUB and ACOUSTIC.

4. Power LED

This LED lights up when the unit is powered on.

LOUDNESS

ACOUSTIC

DRUM KICK

JAZZ CLUB+SUB

FLAT

VIRTUAL SUB

STAGE MONITOR

JAZZ CLUB

CONCERT HALL+SUB

DISCO

VOCAL

ROCK & ROLL

POWER

(4)

(3)

-. THE REAR PANEL

OUTPUT

TIP/PIN2 RING/PIN3

15VAC~

POWER

(5)

SLEEVE/PIN1

RIGHT RIGHT

LEFT

(6)

5. AC Inlet

This jack is used to connect the AC power supply with the supplied 15V AC adapter.

6. Output Connector

This is a balanced 1/4" TRS jack, which is used to connect devices such as the effects returns on a mixing console or power amplifier inputs.

7. Input Connector

This is a balanced 1/4" TRS jack, which connects to sources such as the effect sends of mixing console.

INPUT

TIP/PIN2 RING/PIN3 SLEEVE/PIN1

LEFT(MONO)

(7)

SPOTLIGHT

4. PANEL DESCRIPTIONS

-. PASSIVE FULL-RANGE: MS12/MS15/MS152/MS153/MS154

(1) INPUT: Receive the power coming from an external power amplifier

(SPK +1/-1 connected; +2/-2 not connected).

(2) THRU: Direct LINK for connect in parallel a second speaker cabinet

(SPK +1/-1 connected; +2/-2 not connected).

LTO

MS12

SOUND REINFORCEMENT SPEAKER SYSTEM

POWER HANDLING:

CONTINOUS - 200 Watts PEAK - 400 Watts

IMPEDANCE:

8Ohms

MODEL

SERIAL

DESIGNED AND DEVELOPMENTIN ITALY

(1) (2)

INPUT

THRU

LINK

-. PASSIVE SUBWOOFER: MS15S/MS18S

(1) INPUT: Receive the power coming from an external power amplifier.

(SPK +1/-1 connected; +2/-2 not connected).

(2) OUTPUT: Power output for satellite speaker, under passive crossover

filtered at 125 Hz. (SPK +1/-1 connected; +2/-2 not connected).

LTO

MS15S

SOUND REINFORCEMENT SPEAKER SYSTEM

POWER HANDLING:

CONTINUOUS - 400 Watts PEAK - 800 Watts

IMPEDANCE:

8 ohms nominal

MODEL

SERIAL

DESIGNED AND DEVELOPMENTIN ITALY

(1) (2)

INPUT

THRU

LINK

HOOK

4. WIRE CONNECTIONS

5. WIRE CONNECTIONS

-.For Passive Speaker Cabinets

Please use the power connectors to make connections with other signal source

only equipment for the passive speaker cabinets. The power connector has four terminals: 1+, 1-, 2+, 2-.

In our cabinets, only 1+/1- are used to connect the Speaker+/Speaker-, and 2+/2are not used.

-. For LTO MS1 SPEAKER MODELLER

Please use shielded twisting pair which can reduce noise and signal loss. The

of the connector is as follow:wiring

Ring

TRS Type balanced

Tip

Sleeve

6. TECHNICAL SPECIFICATION

Model Item Passive System Type Continuous Power Peak Power Max SPL at 1m Frequency Response Impedance Crossover Frequency Protection Low Frequency Device High Frequency Device Coverage (H x V ) Connectors Cabinet Dimensions (HxWxD) Net Weight (lbs/kg)

MS12

2-Way Vented Box 200 Watt AES Standard 400 Watt Peak 119 dB Nominal/122 dB Peak 65 Hz/20 kHz at -10 dB 8 Ohms 2k5Hz/12 dB/Oct Electronic Dynamic Protection 12" Woofer/2" voice coil 1" Neodymium Driver/1" Voice Coil 90 H x 60 V Elliptical Wave Guide 2 x SPK4 @ Power Input/Link Trapezoidal Shape/Composite Wood/Metal Handle/Black Paint finishing 650 x 400 x 365 (mm)

43.87 lbs/19.90 kg

MS15

2-way Vented Box 300 Watt AES Standard 600 Watt Peak 122 dB Nominal/124.5 dB Peak 55 Hz/20 kHz at -10 dB 8 Ohms/4 Ohms 2 kHz/12 dB/Oct Electronic Dynamic Protection 15" Woofer/2.5" Voice Coil

1" Neodymium Driver/1" Voice Coil 90 H x 60 V Elliptical Wave Guide 2 x SPK4 @ Power Input/Link Trapezoidal Shape/Composite Wood/Metal Handle/Black Paint finishing 750 x 450 x 420 (mm)

55.07 lbs/24.98 kg

MS152

2-Way Vented Box 500 Watt AES Standard 1000 Watt Peak 127 dB Nominal/130 dB Peak 55 Hz/20 kHz at -10 dB

4 Ohms 250 Hz~2 kHz/12 dB/Oct Electronic Dynamic Protection

2 x 15" Woofer/2.5" Voice coil 1" Driver/1.35" Voice coil 90 H x 60 V Elliptical Wave Guide 2 x SPK4 @ Power Input/Link Trapezoidal Shape/Multi-layer plywood/Metal Handle/Black Paint finishing 1100 x 450 x 443 (mm)

78.66 lbs/35.68 kg

6. TECHNICAL SPECIFICATION

Model Item Passive System Type Continuous Power Peak Power Max SPL at 1m Frequency Response Impedance Crossover Frequency Protection Low Frequency Device Mid Frequency Device High Frequency Device Coverage (H x V ) Connectors Cabinet Dimensions (HxWxD) Net Weight (lbs / kg)

MS153

3-way Vented Box 350 Watt AES Standard 700 Watt Peak 123 dB Nominal/126 dB Peak 50 Hz/20 kHz at -10 dB 8 Ohms/4 Ohms 700 Hz~3 kHz/12 dB/Oct Electronic Dynamic Protection 15" Woofer/2.5" Voice Coil 8" Midrange/2" Voice Coil 1" Neodymium Driver/1" Voice Coil 90 H x 60 V Dual Wave Guide 2 x SPK4 @ Power Input/Link Trapezoidal Shape/Multi-layer Plywood/Metal Handle/Black Paint finishing 900 x 450 x 415 (mm)

67.59 lbs/30.66 kg

MS154

3-Way Vented Box 700 Watt AES Standard 1400 Watt Peak 128 dB Nominal/131 dB Peak 45 Hz/20 kHz at -10 dB

4 Ohms 700 Hz~3 kHz/12 dB/Oct Electronic Dynamic Protection 2 x 15" Woofer/2.5" Voice Coil 8" Midrange/2" Voice Coil 1" Driver/1.35" Voice Coil 90 H x 45 V Dual Wave Guide 2 x SPK4 @ Power Input/Link Trapezoidal Shape/Multi-layer Plywood/Metal Handle/Black Paint finishing 1250 x 450 x 443 (mm)

95.22 lbs/43.19 kg

6. TECHNICAL SPECIFICATION

Model Item Passive System Type Continuous Power Peak Power Max SPL at 1m Frequency Response Impedance Low-High Crossover Frequency Low Frequency Device Connectors Cabinet Dimensions (HxWxD)

Net Weight (lbs / kg)

Model Item Passive System Type Continuous Power Peak Power Max SPL at 1m Frequency Response Impedance Low-High Crossover Frequency Low Frequency Device Connectors Cabinet Dimensions (HxWxD)

Net Weight (lbs/kg)

MS15S

Band-Pass 400 Watt AES Standard 800 Watt Peak 123 dB SPL calculated 45 Hz/200 Hz at -10dB 4 Ohm 160 Hz/6dB/oct. 15" Woofer/3" Voice Coil 2 x SPK4 @ Power Input/Output Multi-layer Plywood/Black painted/Metal handle 600 x 485 x 600 (mm)

75.84 lbs/34.40 kg

MS18S

Band-Pass 400 Watt AES Standard 800 Watt Peak 124 dB SPL calculated 35 Hz/200 Hz at -10 dB 4 Ohm 160 Hz/6 dB/oct. 18" Woofer/ 3" Voice coil 2 x SPK4 @ Power Input/Output Multi-layer Plywood/Black painted/Metal handle 730 x 600 x 600 (mm)

105.16 lbs/47.70 kg

LTO MS1 TECHNICAL SPECIFICATION

AUDIO INPUT

AUDIO OUTPUT

SYSTEM SPECIFICATIONS

INDICATORS POWER SUPPLY

PHYSICAL

Connectors Type Impedance Max. Input Level CMRR Connectors Type Min. Output Impedance Max. Output Level Frequency Response S/N THD Input Level AC Adaptor

Power Consumption Dimension Net Weight

1/4" jack RF filtered, Servo balanced input 30 kohms Balanced, 22 kohms Unbalanced +26 dBu Balanced and Unbalanced

Typ.40 dB,>55 dB@1 kHz 1/4" jack Balanced 100 Ohm +26 dBu Balanced 10 Hz to 30 kHz, +/-1 dB(FLAT)

>110 dB, Unweighted, 22 Hz to 22 kHz

0.005% typ. @ 0 dBu, 1 kHz,(unity gain), FLAT CLIP LED Display: +7 dBu USA/Canada 120V~, 60 Hz U.K./Australia 240V~, 50 Hz Europe 230V~, 50 Hz 5W 130(W) 117(D) 45(H) mm (5.1" 4.6" 1.7")

0.8 kg

7. 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 warrants that this product will be free from any defects in materials

LT O 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, 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 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.

LT O

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

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

NF02424-1.3

Alto Professional MS18S User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual