Fusion MS-AM402 User manual

Brand: Fusion

Model: MS-AM402

Category: Car audio amplifiers

Type: User manual

This manual is also suitable for

MS-AM504

Fusion MS-AM402 is a high-powered 2-Ohm stable stereo amplifier designed for marine environments. With a peak power of 400 Watts per channel, it can deliver clean and powerful sound to your speakers. It features variable bass boost, low-pass and high-pass crossovers, and a subsonic filter for precise sound control. The nickel-plated RCA connectors and stainless steel chassis ensure durability and resistance to corrosion. Easily connect multiple amplifiers with the RCA line output. Experience superior audio quality and enjoy your favorite music on your boat with the Fusion MS-AM402.

User/Installation Manual

FUSIONENTERTAINMENT.COM

MS-AM402

MARINE AMPLIFIER

2010 Version 1.0

Contents

Feature Overview ....................................Pg 3

Control Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg 4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg 6

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg 6

Inputs and Gain Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg 8

Single Channel Installation .............................Pg 8

Two Channel Installation / Power Cable Calculator...........Pg 9

Trouble Shooting / Specications .......................Pg 10

RECORD YOUR PRODUCT DETAILS HERE:

MODEL NUMBER DATE OF PURCHASE AFFIX RECEIPT HERE

Feature Overview

• 2OhmStableMOSFETAmplierDesign

• Variable Bass Boost 0 - + 18dB

• Variable LP and HP Electronics X-OVER @ 18dB/octave

• 4GaugePowerandGroundConnections

• Nickel Plated Audio Input and Output RCA Connections

• Nickel Plated RCA Output for multi-amp Installations

2-OHM STABLE STEREO

Providestheoptionofconnectinganextrapairofspeakersinparallel,2

per channel at 2-Ohms (A total of 4 speakers).

MARINE GRADE CONNECTIONS

NickelplatedRCAconnectorsandstainlesscomponentsimprovesignal

owforoptimumoutput

CLASS-AB DESIGN

The400Wattpeak2-Ohmstable(perchannel)designensurescleanand

powerfulamplicationoftheinputsignal,enoughtorocktheboat.

CONFORMAL COATED CIRCUITRY

Providesaddedprotectionfromsaltairandmoisturetoensuremaximum

product life.

MARINE GRADE CHASSIS

Stainlesssteelendandbottomplatesprovideastunningnishcoupled

withenvironmentalprotection.

RCA LINE OUT

ApassthroughRCAoutputenableslinkingofmultipleampliersfor

enhanced system performance

003

FEATURE OVERVIEW

RECORD YOUR PRODUCT DETAILS HERE:

MODEL NUMBER DATE OF PURCHASE AFFIX RECEIPT HERE

Control Descriptions

004

CONTROLS

8765

10 11

1 Power And Status LEDs:

Thisshowsiftheamplierhasbeencorrectlypoweredupandifanyfaultsarepre-

sent.

2 Crossover Selector:

Settheappropriatemodeofoperation.The3positionsavailableareOFF,LPand

H P.

3 Low Pass:

Setthecrossoverswitch2toLPwhenasubwooferisconnected.Ensurethecrosso-

verfrequencyissetat100Hzorbelow,thisfeatureisdesignedtolterallmidto

highfrequenciesthatonlyFULLRANGEspeakersshouldproduce.NOTE:Failureto

dosocouldresultinspeakerdamage.

4 High Pass:

Setthecrossoverswitch2toHPandturnthiscontrolto65Hzorabovewhenusing

speakerssmallerthan6”,thisfeatureisdesignedtolteralllowbassfrequencies

thatonlySUBWOOFERSshouldproduce.NOTE:Failuretodosocouldresultin

speakerdamage.

5 Bass Boost:

Thisisavariablecontroltoincreasethebassboostat45Hzfrom0-+18dBofgain,

adjust to suit.

005

CONTROLS

6 Subsonic Filter:

ThisisavariablecontrolltersoutallSubBassFrequenciesbelowthesetpointat

18dB/octave.

7 Level:

Thisallowsleveladjustmentoftheinputsignal.Usethiscontroltocorrectlymatch

theheadunittotheamplier.Tosetthiscontrolcorrectly,turntheamplierlevel

toMINandtheheadunitto3/4volume,withtheBASSandTREBLEonzero,then

slowlyturnupthisamplierlevelcontroltowardstheMAXendofthecontrol.

NOTE:Ifthesoundbecomesdistorted,turnthiscontroldown.

8 RCA Input:

Connect these RCA connectors to the LOW LEVEL output connection from the head

unit.

9 RCA Output:

UsetheseRCAOutputconnectorstoconnecttoasecondaryamplier.Thisoutput

isaPASS-THRUconnectionderivedfromtheRCAinputconnectorsothesignal

levelandfrequencyresponsearethesameastheoriginalinputsignal.

10 Ground Connection:

Connectdirectlytoasuitablegroundpointviaa4gaugepowercable.NOTE:This

istobetherstwiretoconnect.Damagecouldresultifthisisnotdone.

11 Remote Connection:

Thisinputisforturningtheamplieronandoff.Thisrequiresaswitchedpositive

(+12V)topower‘ON’theamplier,thiscanbefoundontherearoftheheadunitin

theformofanelectricantennaoutput,oraremoteonoutput.Ifnotavailableyou

canwiretoaswitched+12Vsupply.

12 Power +12V Connection:

Thismustbeconnectedtothebatterypositive(+)terminalviaa4guagepower

cableandwithaninlinefuseorcircuitbreakeratthebatteryend.NOTE:Thisisto

bethelastwiretoconnectupduringinstallationasdamagecouldresult.

13 Fuse:

Pleaseensurethecorrecttypeoffuseistted,asspeciedinthismanual.PLEASE

NOTE:theMS-AM402has1x25Afuse.

14 Speaker Output:

 Seechannelinstallationdiagramsinthismanualforcorrectspeakerconnection.

006

INSTALLATION

Installation

Mounting

Appropriatemountingisveryimportantfortheprolongedlifeexpectancyofany

amplier.Selectalocationthatallowsenoughspacesosufcientairowismaintainable

andalocationthatprovidesprotectionfrommoisture.Keepinmindthatanamplier

shouldneverbemountedupsidedown.Upsidedownmountingwillcompromiseheat

dissipationthroughtheheatsinkandcouldengagethethermalprotectioncircuit.

Excessiveheatwillshortenyouramplierslife.Tomaximiseheatdissipation,besureto

leaveatleast2.5”ofclearancearoundtheamplier.Ifspaceisoftheessenseandthe

ampliermustbemountedinanenclosedorrestrictedarea,asmall3inchfanshould

beusedincorrespondencewithaductsotheheatcanowpasttheHeatsink.

ToavoidscratchingyournewFUSIONamplier,pre-drillthemountingholeswitheither

a3mmor9/64”diameterdrillbitandusethescrewssuppliedintheaccessorykit.Be

suretoinvestigateyourmountingareathoroughlytoavoidelectricalwires,vacuumlines

or fuel lines.

Installation Options

ThequalityofinstallationwillaffecttheperformanceandreliabilityofyourFUSION

amplier.FormaximumperformancewerecommendyouhaveyournewFUSION

amplierinstalledbyanauthorisedFUSIONdealer.Ourhighlyskilleddealershavevast

knowledgeofourproductsandtheirinstallationtechniquesarenecessarytounleash

thehighperformancecapabilitiesofyouramplier.

Ifyoudecidetoconnecttheamplieryourself,itisimportantthatyoureadthismanual

carefullyandthroughoutbeforestarting.Onceyouhavenishedreadingandyoustill

havequestionsregardinginstallation,werecommendyourFUSIONdealer.

Connection

FUSIONampliersaredesignedtoworkwithina10to16voltDCrange.Before

anywiresareconnected,thevessel’selectricalsystemshouldbecheckedforcorrect

voltagesupplywiththehelpofavoltmeter.First,checkthevoltageatthebatterythe

voltmetershouldreadbetween12and13.8Volts.Ifyourvessel’selectricalsystemis

notuptothesespecication,werecommendhavingitcheckedbyanautoelectrician

beforeanyfurtherinstallation.Oncethevesselischecked,makecertainthecorrect

cablesizeisused.Werecommendusingthefollowingcablescalculatordiagramon

page9tocalculatethecorrectpowercableforyourapplication.

Power

FUSIONampliersshouldbewireddirectlytothebatteryusingtheappropriatesized

cable.Startatthevesselsbatteryandrunthepowercablethroughtotheamplier.

FUSIONrecommendstheuseofgrommetswhenpassingthepowercablethroughany

metalwalltoavoidsharpcornersorsharpbodypartsthatmayeasilycutthroughthe

insulation on the cable.

Avoidrunningthepowercableoverenginecomponents.Theuseofaninlinefuse

orcircuitbreakerisamust,thiswillpreventtheriskofapotentialrecausedbea

shortinyourpowercable.Connectthefuseholderorcircuitbreakerasclosetothe

007

CONNECTION

battery positive terminal as possible. Use a fuse or circuit breaker of equal value as that

foundonthechassisofyourFUSIONamplier.Youmaynowconnectthecabletothe

battery,butremembertoleavethefuseoutorcircuitbreakeroffuntilallothercable

connections are made.

Ground

WhengroundingyourFUSIONamplier,usethesamegaugecableforgroundas

youdidforthepower.Securethegroundcabletotheappropriategroundpoint,now

itstimetoconnectthepowerandgroundcablestotheamplier.Cutbothcablesto

length.Useahextypescrewdrivertoloosenthe+12VandtheGNDconnectionsonthe

amplier.Terminatethegroundrst,andthenthe+12Vandpleasemakesurethatyou

terminatethemintothecorrectterminals.Thentightenthescrewsdownsecurely.

Speaker Load

KeepinmindFUSION‘AM’seriesampliersarehighpowerampliersandnothigh

currentampliers.Inotherwordstheyrequireaminimumimpedanceof2ohms

STEREOand4ohmsbridgedMONOtooperatetroublefree.Toolowofanimpedance

couldsendyourFUSIONamplierintoprotectionmodeand/ordamagetheamplier.

Remote Turn-on

Thisterminalmustbeconnectedtoaswitched+12Vsource.Typically,remote

turn-onleadsareprovidedattheheadunitwhichwillturnonandofftheamplier.Ifthe

headunitdoesnothavearemoteturn-onlead,thenapowerantennawirecanbeused.

Ifneitheroftheseleadsarepresentontheheadunitthenaswitched+12Vsupplymust

beused,liketheACC+12V.

Runaminimumof18gaugewirefromtheamplierlocationtothesourceofthe

switched+12Vlead.Connectthesourceremoteoutputtothewire.Gobacktothe

amplierandcutthewiretolength.LoosenthescrewterminalmarkedREMonthe

amplierusingahextypescrewdriver.Slipthewireintotheconnectorandtightenthe

screwsecurely.

Single Channel Installation

008

INSTALLATION

FUSE

PLEASE NOTE: The crossover selector positions

Inputs & Gain Setup

Low Level Inputs

BeextracarefulwithyourRCAinterconnects.Hiss,enginenoise,andfannoisecan

easilybepickedupthroughRCAcablesifrunincorrectly.AvoidrunningyourRCAsnear

largewireloomsandelectricfansifpossible.RunyourRCAcablesontheoppositeside

ofthepowercable.Besuretocheckforcorrectbalance(Redisrightandblackorwhite

is left)

Level Control

Ontheamplier,istheLEVELcontrol,thiscontrolallowsyoutomatchtheinputlevelof

theampliertotheoutputlevelofyourheadunit.Matchingtheinputcanbeaccom-

plishedinthreesimplesteps:

1. TurntheLEVELcontrolontheampliertominimum.

2. Turnuptheheadunitandadjustto2/3maximumvolumeensuringthattheBASS

and TREBLE are set to zero.

3. AdjusttheLEVELcontroluntilthedesiredvolumeisachievedwithoutaudibledis-

tortion.

Remember,thegaincontrolisnotavolumecontrol.Ignoringthethreestepsabovemay

leaveyouwithdamagedspeakersand/oradamagedamplier.

Two Channel Installation

Power Cable Calculator

TotalAmperage

0-4ft 4-7ft 7-10ft 10-13ft 13-16ft 16-19ft 19-22ft 22-28ft

0-20 14 12 12 10 10 8 8 8

20-35 12 10 8 8 6 6 6 4

35-50 10 8 8 6 4 4 4 4

50-65 8 8 6 4 4 4 4 2

65-85 6 6 4 4 2 2 2 0

85-105 6 6 4 2 2 2 2 0

105-125 4 4 4 2 0 0 0 0

125-150 2 2 2 0 0 0 0 0

Theabovechartshowscablegaugestobeused,ifnolessthana0.5voltdropisacceptable.Ifaluminiumwireortinnedwireisused,thegaugesshouldbeof

anevenlargersizetocompensate.Cablegaugesizecalculationtakesintoaccountterminalconnectionresistance.1Metre=3.28Feet

009

CONNECTION

FUSE

PLEASE NOTE: The crossover selector positions