Alto Professional SR400P User Manual

SEIKAKU TECHNICAL GROUP LIMITED

ALTO

NF03324

-RS

SR800SA/SR400P ALTO_V1.0

SR800SA

0.02KG/1

6

105G

A3 A4 A5

PHFUA102-20090700043

AL-0903004

3

JUL.30.2009

OWNER'S MANUAL

SR800SA + SR400P

LOUDSPEAKER SYSTEM

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

All rights reserved to ALTO. All features and content might be changed

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

manual without written permission is forbidden. Copyright 2009 Seikaku Group

SEIKAKU TECHNICAL GROUP LIMITED

www.altoproaudio.com Tel: [phone]

email: [e-mail] Fax: [phone]

c

NF03324-1.0

www.altoproaudio.com

Version 1.0 Jul 2009

English

IMPORTANT SAFETY INSTRUCTION

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

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 dangero us voltages
within the product enclosure. Th ese are voltages that
may be sufficient to constitute the r isk 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 turn ed on.
OFF: Denotes the product is turned off.

CAUTION

Describes precautions that should be obs erved to
prevent damage to the produ ct.

1.

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

2.

Be aware of all warnings reported

3.

with this symbol.

4.

Keep this Equipment away from wa ter and
moisture.

5.

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

6.

Do not damp or cover any cooling opening.
Install the equipment only in accordance with
the Manufacturer's instructions.

Power Cords are designed for yo ur safety. Do

7.

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

8.

periods of time or during a storm.

Refer all service to qualified service personnel

9.

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
not be placed in municipal waste
and should be separate collection.

Move this Equipment only with a cart,

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 o f
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

90

train

92

Subway train

95

High level desktop monitors

97

Classic music concert

100
102
105
110
115

Rock concert

8.WARRANTY

IN THIS MANUAL:

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 I n

case of return for any warranty service, please make sure that the pr-
oduct 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

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 mat-LT O
erials 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 purch-

ased 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 LT O
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

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

1. INTRODUCTION

2. SPEAKER CABINET QUICK START

3. WIRE CONNECTIONS

4. FREQUENCY RESPONSE

5. PANEL DESCRIPTION-SR800SA

6. PANEL DESCRIPTION-SR400P

7. TECHNICAL SPECIFICATION

8. WARRANTY

1. INTRODUCTION

Thank you very much for expressing your confidence in LTO products by
purchasing SR800SA + SR400P loudspeaker system. The system is
specifically designed for using in hi-quality performance site and the precise
sound reinforcement commercial place. It uses trapezium configuration which
greatly decreases the resonance of the standing wave in the cabinet and
uses hi-density matrix spray-paint technics and the bottom bracket design
which make mounting quickly and flexibly.

SR800SA + SR400P is a complete system that integrates in the same
unit loudspeakers, amplifiers and analog processor. The system includes
two different models:

- SR800SA: It's a sub-woofer mounting a 15" woofer in a vented cabinet
includes Bi-amp 400W + 400W, one for the sub-woofer, and the other one
for the full-range satellite SR400P. The standard combination with the SR400P
requires one sub for each satellite.

- SR400P: It's a passive speaker includes a 1.35" horn-loaded compression
driver and a 12" woofer in a vented cabinet. It can be used as a full-range
system or as a satellite in combination with the SR800SA.

Enjoy your SR800SA + SR400P loudspeaker system and make sure to read
this manual carefully before operation.

1

2

3

4

5

6

7

8

8

1

SPOTLIGHT

2. SPEAKER CABINET QUICK START

SPOTLIGHT

7. TECHNICAL SPECIFICATION

Make all initial connections with all the equipment powered off, and ensure
that all the main volume controls are turned completely down.

1). Connect one side of the signal cable at your audio mixer into output
left /right (with Stereo-Jack or XLR) and the other side of the cable into
the line input (Stereo-Jack) of your active speaker cabinet.

2). Connect the power cord to mains.

3). Turn on your mixer first, then the active speaker cabinets.

4). Turn up the volume control of the active speaker cabinets.

5). Use PFL function to get the proper input level for the mixer, and adjust
the main mix level control to manipulate the output level.

6). After using, turn off your active speaker cabinets first, then the mixer.

Speaker Cable

(14 AWG)

SR400PSR400P

Signal Cable

Left
Main Mix
Output

Speaker Cable

(14 AWG)

Signal Cable

Right
Main Mix
Output

SR800SA

Power System

Frequency Response
Maximum SPL @ 1m
Transducer Low
Active Crossover
Input / Output
Input Level
External Control

Power Supply
Enclosure Construction

Mounting
Dimensions (HxWxD)
Net Weight
Shipping Weight

SR400P

Power System
Frequency Response (-10dB)
Sensitivity (1w @ 1mt)
Impedance:
Maximum SPL @ 1m
Coverage (HXV)
Transducer Low
Transducer High
Horn Type
Passive Crossover
Input Connector
Enclosure Construction

Mounting / Suspension
Dimensions (HxWxD)
Net Weight
Shipping weight

15" Compact subwoofer Active Speaker Cabinet

2 x 500W CLASS AB in EIAJ

2 x 400W CLASS AB in Continuous

42Hz-125Hz (-10dB)

122dB Continuous / 125dB Peak (Calculated)

15" Woofer, 3" High Power voice coil

HPF 80Hz under analog processor

LINE-COMBO/LINK-XLR-M, OUT SAT with SPK NL-4

Line 0dBu

Volume SUB / Volume SAT / Phase NORMAL-REVERSE / Power

ON with Green LED / Clip Limiter with Red LED / Ground Lift

120-240 Volt, in Switching Power mode.

18mm multi-layer Plywood , glued and reinforced, black-scratch

resistant paint, metal grille and rubber footer foot, four

optional wheel

One standard metal pole-mount , plus one metal handle.

591x 451 x 554mm (23.3" x 17.8" x 21.8")

39.8 kg / 87.7 lbs

43.4 kg / 95.6 lbs

12" 2-way Passive Speaker Cabinet
400W Continuous in AES Standard
47Hz-20kHz (-10dB)
94dB SPL
4 (nominal)
122dB Continuous / 125dB Peak (Calculated)
90 x 45 nominal
12" Woofer, 2.5" High Power voice coil
1" Driver with 1.4" voice coil, Titanium Diaphragm
Eliptical Waveguide
2kHz at 12dB/oct with Electronic Protection
INPUT / THRU with SPK NL-4
Trapezoidal shape, 15mm multi-layer Plywood , black-scratch
resistant paint, metal grille and footer foot.
One metal pole-mount , two metal handle
615 x 377.5 x 377.8mm (24.2" x 14.9 x 14.9")

16.8 kg / 37.1 lbs

19.1 kg / 42.1 lbs

"

SR800SA SR800SA

2

Mixer

7

SP

OTLIG

HT

6. PANEL DESCRIPTION-SR400P

CONNECTION PLATE

PASSIVE FULL RANGE: SR400P

(1) INPUT

Receive the signal 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)

Besides, the passive crossover included the electronic protection
on the driver.

SR400P

3. WIRE CONNECTIONS

-.For Active Speaker Cabinets

As to these circumstances,audio connections is mostly intended for the signal
flow,so,determine the wire configuration according to your real application
system and its connecting facility.Normally,you have the following choices:

SOUND REINFORCEMENT SPEAKER SYSTEM

POWER HANDLING: 400W-AES Std.

IMPEDANCE: 4 Ohm

Max SPL: 122dB at 1mt

MODEL

SERIAL

DESIGNED AND DEVELOPMENT IN ITALY

LINK

INPUT

THRU

(1) (2)

-.For Passive Speaker Cabinets

Please only use the power conne ctors to make connections with other signal source
equipment for the passive speaker cabinets. The power connector has four terminals:
1+, 1-, 2+, 2-.

1+

1-

2-

2+

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

36

4. FREQUENCY RESPONSE

SP

O

TL

IG

HT

5. PANEL DESCRIPTION-SR800SA

SR800SA

+110

+100

d

B

S
P

+90

+80

ACTIVE SUBWOOFERS: SR800SA

(3)

(6)
(7)

(5)
(4)

(8) (11)

(10)

(9)

(12)

L

+70

Use only with a 250V fuse

+60

(2)

(1)

20 20k50 100 200 500 1k 2k 5k 10k

Hz

SR400P

+110

+100

d

B

+90

S
P

+80

L

+70

+60

20 20k50 100 200 500 1k 2k 5k 10k

Hz

4 5

ON-OFF: Main power switch

AC INPUT: AC power socket with main fuse

POWER LED: Green color indicates ON status

(3)

PHASE SWITCH: Reverse the polarity of the subwoofer output

(4)

(5)

GROUND LIFT SWITCH

LINE IN RIGHT: On XLR connector

(6)

LINE IN LEFT/MONO: On COMBO connector

(7)

(8)

SIGNAL/LIMIT LED: Red color indicates ON status of the subwoofer output

(9)

SUB VOLUME: Volume control of the subwoofer output

(10) SAT VOLUME: Volume control of the satellite(SR400P)

(11) SIGNAL/LIMIT LED: Red indicates ON status of the satellite

(12) SPEAKER OUTPUT: Speakon to satellite 1+POSITIVE/1-NEGATIVE