Alto Aviation ASW-283 User manual

PRODUCT MANUAL
ASW-283
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Product Manual
ASW-283
ALTO PN 106511-283-4FXXXX
Aircraft Cabin Subwoofer
Alto Aviation
86 Leominster Rd
PO Box 399
Sterling, MA 01564
Phone: [phone]
800.814.0123
Fax: [phone]
E-mail: [email protected]
www.altoaviation.com

PRODUCT MANUAL
ASW-283
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Rev #
Date
Page
A
PM
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Revisions
Rev #
Date
Description
1
08/13/12
Initial Release
2
01/26/15
E1501005 Updated address and flammability reference
Copyright/Proprietary Notice
Alto products are continually improved and all specifications are subject to change without notice. Information
and data in this document is confidential and proprietary. Reproduction or disclosure of the information contained
in this publication or any portion thereof, by any means, without the express written permission of
Alto Technologies Corporation is prohibited.
Copyright © Alto Technologies Corporation. All rights reserved

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Service Bulletin List
Service
Bulletin
Number
Subject
Manual
Revision
Number
Manual
Revision
Date

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Table of Contents
1.0 GENERAL INFORMATION............................................................................................ 6
1.1 INTRODUCTION........................................................................................................................ 6
1.2 PURPOSE OF EQUIPMENT...................................................................................................... 6
1.3 DESIGN FEATURES ................................................................................................................. 6
1.4 TECHNICAL SPECIFICATIONS ................................................................................................ 7
1.5 OUTLINE DRAWING ................................................................................................................. 8
2.0 INSTALLATION.............................................................................................................. 8
2.1 GENERAL.................................................................................................................................. 8
2.2 UNPACKING AND INSPECTION............................................................................................... 9
2.3 WIRING REQUIREMENTS........................................................................................................ 9
2.4 LOUDSPEAKER PLACEMENT................................................................................................ 10
2.5CONNECTOR PINOUTS ......................................................................................................... 10
2.6 MOUNTING HARDWARE........................................................................................................ 10
3.0 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS............................................. 11
3.1 PERIODIC MAINTENANCE..................................................................................................... 11
4.0 TROUBLESHOOTING ................................................................................................. 11
4.1 BASIC TROUBLESHOOTING.................................................................................................. 11
5.0 ENVIRONMENTAL CATEGORIES.............................................................................. 12

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List of Illustrations
Figure 1: ASW-283 Image ...................................................................................................................7
Figure 2: ASW-283 Outline Drawing.................................................................................................... 8
Figure 3: Connector Pinouts .............................................................................................................. 10
Figure 4: Basic Troubleshooting ........................................................................................................ 11
Figure 5: Environmental Categories................................................................................................... 12

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1.0 GENERAL INFORMATION
1.1 Introduction
This manual contains information for the installation and operation of Model ASW-283,
P/N 106511-283-4FXXXX, Aircraft Cabin Subwoofer.
This document includes product information such as mechanical, acoustic, and electrical
characteristics.
1.2 Purpose of Equipment
The ASW-283 is a lightweight, high power, bass reflex subwoofer module designed for
placement in most luxury seat bases, divans, bulkheads, sidewalls, or cabinets. The high
excursion 4” driver is precisely matched to the acoustically tuned enclosure resulting in
high output and lower frequency bass roll off. The motor structure of the driver is
designed to be lightweight and have low magnetic leakage compared to conventional
designs. This subwoofer is an integral part of the Alto Aviation Entertainment System
(AES), a complete audio system in which the amplifiers and speakers are configured
based on aircraft type and cabin configuration to provide the finest audio available.
1.3 Design Features
The ASW-283 is designed to be as small and lightweight as possible without sacrificing
audio performance. It is only 3” deep. The small package allows for easy installation.
The speaker has a maximum power rating of 50 Watt RMS (40Hz –200Hz).
The bass reflex design allows for lower frequency bass roll off. The integrated grills
protect speakers during installation. The speaker has a high efficiency driver with low
magnetic leakage precisely matched to the enclosure.
The Subwoofer is Integral part of the Alto Aviation Entertainment System (AES).

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Figure 1: ASW-283 Image
1.4 Technical Specifications
Drivers 4” high excursion, low magnetic leakage,
high force design
Frequency Response: 40Hz - 200Hz
Impedance 4 Ohm nominal ALTO PN 106511-283-4FXXXX
Continuous Power Rating 25 Watt RMS
Max. Power Rating 50 Watt RMS
Sensitivity 88 dBSPL @ 1W/1m
DO-160F Env. Cat.
[A2X]CAB[(SC)(HR)]XXXXXXBXXXXXX[XXXXX]XXXX
Connector
Mating connector AMP 2 pin MATE-N-LOK - Socket
Physical Specifications
Weight <3.5 lbs (<1.6 kg)
Dimensions 8”W X 13.8”H X 3”D (203.2mm W X 349.3mm H X 76.2mm D)

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1.5 Outline Drawing
Note: Dimensions are for reference only. See DA (Delivered Assembly) drawing for exact dimensions.
Figure 2: ASW-283 Outline Drawing
2.0 INSTALLATION
2.1 General
The information in this section assists the installer of the unit. Conformity to the electrical
wiring and mechanical mounting guidelines will help to ensure proper operation of the
unit.
Review all information in this section before proceeding with the installation of the unit.
For assistance during installation please contact Alto using the following contact
information:

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Alto Aviation
86 Leominster Rd
PO Box 399
Sterling, MA 01564
Phone: [phone]
800.814.0123
Fax: [phone]
E-mail: [email protected]
www.altoaviation.com
When connecting this unit to another manufacturer’s product, consult the manufacturer’s
specifications and installation instructions pertaining to their equipment.
The conditions and tests for TSO approval of this article are minimum performance
standards. Those installing this article, on or in a specific type or class of aircraft, must
determine that the aircraft installation conditions are within the TSO standards. The
article may be installed only following 14 CFR part 43 or the applicable airworthiness
requirements.
2.2 Unpacking and Inspection
Carefully open the packaging and remove the product. Visually inspect the unit for
evidence of physical damage during shipment. Retain the packing materials and all
documentation received with the unit. Verify that all components on the packing list have
been received.
If the unit has been damaged during shipment, call Alto at 800.814.0123. A claim must
be filed with Alto immediately after unpacking. Alto will assign a RMA Number (Returned
Material Authorization) and give instructions for shipment. Please use the original carton
and packing materials for shipping back to Alto.
2.3 Wiring Requirements
Loudspeaker wiring should use twisted pair or twisted shielded pair wire. If twisted
shielded pair is used, the shield should be grounded at the amplifier end only.
Speaker wires that are too small will attenuate the signal to the speakers. The maximum
harness resistance between the unit and each speaker should be < .25 ohm. Harness
resistance can be measured by:
Disconnect the amplifier and speaker.
Short the harness pins together at the speaker end.
Measure resistance across the speaker output pins at the amplifier end of the
harness.
Avoid parallel runs or installation of audio signal cables in close proximity of transmitter
coax cables, high current DC power wiring, AC power wiring, or other high current
wiring.

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Avoid installation in close proximity to any device with a strong alternating magnetic field
such as an inverter or electrical motor.
Wire size, type, and installation should comply with all industry regulations pertaining to
the actual installation.
2.4 Loudspeaker Placement
Please contact Alto Aviation for additional guidance on speaker placement and alternate
solutions.
2.5 Connector Pinouts
AMP 2 pin MATE-N-LOK –Socket AMP connector PN 350778-1
Pins PN 350690-7
Mating Connector: AMP 350777-1
Mating Pin: AMP 350551-7
Pin 2-
Pin 1+
Figure 3: Connector Pinouts
2.6 Mounting Hardware
Max intrusion into enclosure = .375”
(5) 10-32 x .375" screws included with product

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3.0 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
3.1 Periodic Maintenance
No periodic scheduled maintenance or calibration is required for continued airworthiness
of this product. If the unit fails to perform to specifications, it must be removed and
serviced by a qualified service facility.
4.0 TROUBLESHOOTING
4.1 Basic Troubleshooting
Problem
Possible Cause
Possible Solution
No Sound
No output from Audio Amplifier
Wiring / connection problem
Insure Audio amplifier is
providing audio signal to
loudspeaker
Insure continuity between
amplifier and loudspeaker on
both terminals
Distorted Sound
Audio output from source unit is
distorted
Loudspeaker Membrane Damage
Verify that the source unit output
has a clean undistorted signal
Inspect the Loudspeaker
membrane to insure there is no
damage and no debris is lodged
in front of the membrane
Poor Audio Quality
Audio source unit controls are
improperly adjusted
Speakers are improperly installed
Adjust controls on audio source
unit for desired sound
Verify installation of speakers to
manufacturer specifications
Noise in Audio System
Vibration in aircraft fixture, grill, or
panel
Use Alto Test CD to play sweep
tones through the system,
Identify loose panel or hardware
that might be rattling and secure.
Figure 4: Basic Troubleshooting

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5.0 ENVIRONMENTAL CATEGORIES
Environmental Tests
RTCA/DO-
160F Section
Conducted Test Category
Temperature and Altitude
4
Low Temp
4.5.1 & 4.5.2
Qualified by similarity to Category A2
High Temp
4.5.3 & 4.5.4
Qualified by similarity to Category A2
In-Flight Loss of Cooling
4.5.5
Identified as Category X Not applicable, cooling not required
Altitude
4.6.1
Identified as Category X no test performed
Decompression
4.6.2
Qualified by similarity to Category A2
Overpressure
4.6.3
Identified as Category X , no test performed
Temperature Variation
5
Qualified by similarity to Category C
Humidity
6
Qualified by similarity to Category A
Operational Shocks & Crash
Safety
7
Qualified by similarity to Category B
Vibration
8
Qualified by similarity to Category S , H, Curve(s) C, R
Explosion Proofness
9
Identified as Category X , no test performed
Waterproofness
10
Identified as Category X , no test performed
Fluids Susceptibility
11
Identified as Category X , no test performed
Sand and Dust
12
Identified as Category X , no test performed
Fungus Resistance
13
Identified as Category X , no test performed
Salt Spray
14
Identified as Category X , no test performed
Magnetic Effects
15
Qualified by similarity to Category B
Power Input
16
Identified as Category X , no test performed
Voltage Spike
17
Identified as Category X , no test performed
Audio Frequency Conducted
Susceptibility
18
Identified as Category X , no test performed
Induced Signal Susceptibility
19
Identified as Category X , no test performed
Radio Frequency Susceptibility
20
Identified as Category XX , no test performed
Emission of Radio Frequency
Energy
21
Identified as Category X , no test performed
Lightning Induced Transient
Susceptibility
22
Identified as Category XXXXX , no test performed
Lightning Direct Effects
23
Identified as Category X , no test performed
Icing
24
Identified as Category X , no test performed
Electrostatic Discharge
25
Identified as Category X , no test performed
Fire, Flammability
26
Identified as Category X, no test performed,
Reference: 200771DS Loudspeaker Flammability Data sheet
Figure 5: Environmental Categories