JL Audio M121B6 Owner's manual

OWNER'S

MANUAL

M121B6

Marine

Subwoofer

Thank

you

for

choosing

a

JL

Audio

Marine

Subwoofer.

With

proper

installation, your

new

speaker

will

deliver

years

of

listening

pleasure.

We

strongly

recommend

that

you

have

your

subwoofer

installed

by

your authorized

JL

Audio

dealer

.

The

installation

professionals

employed

by

your

dealer

have

the

necessary

tools

and

experience

to

properly

install

this

product.

If

you

prefer

to

perform

your

own

installation,

please

read

this

instruction manual

completely

before

beginning

th

e

process

.

'-'L

AUDIO

®

.A

/1

e a

d..

l'rk-

t:'/1

e C

lA

'\V

e -

PHYSICAL

SPECIFICATIONS

Power Handling (continuous):

600

W

* Xmax specifications are derived via

one

-

way

voice coil overhang

method

with

no correction factors applied.

**Efficiency (1W/1

m}

is

!l2! an accurate indicator

of

a subwoofer's

output

capability

and

should

not

be used

as

a comparison

to

other

subwoofers

to

determine

which one

is

"louder

" !

We rec

omm

end

th

e u

se

of this sp

ea

ke

r

in

a

bi

-ampli

fi

ed

system us

in

g

hi

gh-qua

li

ty

sa

tellite sp

ea

kers and amplifiers.

We do not reco

mm

e

nd

th

e u

se

of this

subw

oofer with a

passive

cr

oss

over

(c

oil

),

as

this ty

pe

of

devic

e will

adver

s

ely

aff

ec

t perf

or

mance.

2 A

ll

s

pec

if

icat

i

on

s

are

subject t o c

ha

n

ge

wi

tho

ut no ti ce.

INCLUDED

PARTS

·One

Polymer Subwoofer

Gri

ll

e

·Six

#10

x 1 5/8-inch

(41

mm)

pa

n-h

ea

d

stainl

ess

-ste

el

screws

·Six

#1

0 sta

in

le

ss-steel

washer

s

·L

ogo

Ba

dg

es

(

Sp

ort-Grille M

od

e

ls

O

nly)

.

,..

-"

On

e Pair

Bla

ck (White &

Ti

t

an

iu

m/

Black Model

s)

One

Pair

Red

(White & T

ita

nium/Bla

ck

Models)

On

e Pa

ir

White (White Models Onl

y)

One

Pa

ir

Titanium

(T

itanium/Black Models Onl

y)

INSTALLATION

PROCEDURE

The d

ia

gram above s

how

s the typi

ca

l

ins

ta

ll

at

ion procedure i

nt

o a

fi

bergl

ass

pa

nel

us

ing

th

e supplied hardw

ar

e (Classic

Gr

ille

Mo

del sh

ow

n.

Installation

is

the

same

for

Sp

ort Gr

il

le

Models).

Alwa

ys

foll

ow

p

ro

per safety pr

oc

edures when

wo

rking on a

ve

s

se

l.

Us

e eye-protection at

al

l tim

es

and a d

us

t

mas

k and glov

es

when

cutt

ing.

1) Choo

se

a flat mounting surface

th

at h

as

sufficient depth

an

d air s

pa

ce behind it to

ac

ce

pt

the

su

bwoofe

r.

2)

Cut a 12

062

5

-in

ch (306

mm)

diameter hole.

3) Run t

he

spea

ker c

ab

le to the

mo

unting l

oca

tio

n.

4)

Pl

ace

the woofer

in

the hole and

mark

the s

cre

w

hole lo

ca

tions using a shar

p,

po

inted too

l.

5) Remove the woo

fe

r

and

dr

ill

a p

il

ot

hole

(s

ee chart on n

ex

t

pa

ge) in e

ac

h

of

the

scre

w

loca

ti

ons

. It is al

so

ad

visable to

use

a hand-driv

en

co

un

tersink tool on

ea

ch hole to furt

he

r inhibit

gel-coat cr

ac

ki

ng

of

fi

b

erg

la

ss

panel

s.

6) Conn

ec

t the spe

ak

er wir

es

and

place

the woofe

r,

with

its

grille in pl

ace,

into the opening (for Sport

Grille model

s,

pay a

tt

en

tion

to

w

he

re the logo

ba

dge wi

ll

ad

ded.

7) While holding the sp

ea

ker fi

rm

ly in its mounting

loca

tion,

ev

e

nl

y sn

ug

t

he

mounting

sc

rews in a

cri

ss

-cross patte

rn

, then hand tighten

in

a c

ri

ss

-

cro

ss

patte

rn

.

Non-stan

da

rd installations m

ay

req

uire diff

er

ent

h

ar

d

wa

re. Alw

ay

s use

ma

ri

ne-grade,

sta

in

less-st

eel

fa

sten

ers

to ensure a

sec

u

re.

re

li

able i

ns

ta

ll

ation.

J L

AU

D IO

M121B6

While this speaker

is

designed

to

be water and

spray

resi

stant,

it

is

not

designed

to

be submerged

or

to

withstand high-pressure water spray.

Please

exercise care when washing your

boat

to

avoid damaging

your

speaker. Do not install

on

submersibles, personal watercraft

or

any

other

vessel

likely

to

be under water at any

time

.

Prolong

ed

exposure

to

sound p

ress

ure levels in

excess

of

1

OOdB

can cause permanent hearing loss.

This high-performance speaker

can

exceed this

level.

Please

exercise restraint

in

its operation

in

order

to

preserve your ability

to

enjoy its fidelity.

When

ins

talling a subwoofer in your v

esse

l,

it

is

extremely

imp

o

rt

a

nt

to

sec

ure

it

firmly. This applies

not

only

to

the woofer

it

self,

but

also the structure

it

is

mounted to.

If

not

firmly attached, the speaker

can

become a dangerous projectile in a collision.

Please

review the mounting information carefully

and

us

e

th

e supplied marine-g

rad

e har

dw

are to

mount this product.

ENCLOSURE SPECIFICATIONS

#1

0

SCREW:

PILOT HOLE RECOMMENDATIONS

INTERCHANGEABLE LOGO BADGE

(Sport-Grille

Models

Only)

Interch

an

geable Logo

Badges

for

Spo

rt G

ri

lle

model subwoofers

are

in

cluded to further customi

ze

your

instal

lation.

Th

e d

es

ign of the Sport G

rille

allows

for the JL

Audi

o logo to be added in

yo

ur

choi

ce

of

included

col

ors

an

d oriented

in

the mann

er

that b

est

suit

s

yo

ur inst

alla

ti

on.

NOTE:

A left

and

a right badge of

each

c

ol

or is

incl

uded.

Th

ese two different orientations en

sure

the "

JL

Aud

i

o"

Logo wi

ll

read

correctly wher

ever

positioned (most commonly the

3:0

0 or

9:00

po

si

tio

n)

.

Remove the adh

es

ive

ba

cking from the badge

and affix t

he

badge to the gri

ll

e using the s

ma

ll

pos

iti

on

ing hole

as

a g

ui

de.

Se

e di

agram

at right.

610

mm

x

470

mm

x

400

mm

~\

SnlodDo<lg•

t 0

Iii

1~1

14

1.

6

1itr

es

762

mm

x 470 mm x 521 mm 127 mm x

343

mm

3:00 Position

9:00

Position

~

The enclosure recommendations listed are external dimensions which a

ss

ume the u

se

of

3/4" (19mm) thick

ma

teria

l.

If

you are using 5/8" (16mm) thick material, su

bt

r

ac

t 1 /4"

(6.5mm) from

ea

ch

dim

ension. Do not u

se

any mate

ri

al wi

th

a

th

ickn

ess

of l

ess

t

ha

n 5/8"

(1

6m

m)

as

th

is

may compromi

se

the rigi

dity

of

the encl

os

u

re

.

All enclosure volumes listed are net in

te

rnal volum

es

!

Box

volume displacement, port di

sp

lacem

en

t

an

d b

rac

e displaceme

nt

must be added to o

bt

ain the final gr

oss

int

ernal

volum

e.

All enclosure dimensions listed have a

lr

eady taken this

int

o account.

~L

AU

D IO

M121BB

Al l spec

ifi

c

at

ions are su

bj

e ct t o c h a

ng

e w i

th

o

ut

no

t ice 3

RECOMMENDED CONTINUOUS (RMS) POWER RANGE FOR ONE SUBWOOFER DRIVER:

75W

125W

250W

so

ow

I

OOO

W

M121BB

••m-

llmEJI'fi

ml

i'i\iii

ml

ii\~ii

iiii

iiiiiii

iiiiiit'ffi

gjilJj

.

:m

____

__

MINIMUM

OPTIMUM

0

:i

ffii

tli~·i~i~~~~~····~·············

MAXIMUM

WARRANTY

VOID

LEGEND·

,;;

0@~'bk~

MEDIUM

GRAY

(MINIMUM):

From a reliability standpoint, this zone

represents a very comfortable operating power

range for

each

driver.

This

level of power will not

stress

the woofer but

will

not

extract

all

of

its

performance potential, either.

Use

of

less

than the minimum power level

will not damage the woofer, but may result

in

unsatisfactory performance.

LIGHT

GRAY

(OPTIMUM):

This zone represents the

be

st compromise

between long-term reliability, high-output and

low-distortion performance.

This

power

level

is

lower than the woofer's continuous p

ow

er rating

(as

publish

ed

in

its

specifications)

, but you

will

still

be

taking

advantage

of the woofer'

s,

low-d

is

tortion

performance

range

without undue

risk

of

fai

l

ure.

DARK

GRAY

(MAXIMUM):

S

lightly

more SPL w

ill

be

gained

by

pushing

t

he

power into

this

zone

, but

typically

not more

than

2d8,

compared

to

the

light

gray

zone.

The

subwoofe

r

driver

is

desig

ned

to

operate

safely

up

to

this

power

range,

but not

beyond

. Operate with caution.

BLACK

(WARRANTY

VOID)

:

We

do

not

re

commend op

era

ting woofers at

this

level

of

power.

In

t

his

zone, there

is

a very

high probability

tha

t the driver will

fail

due to

excessive

heat and/or mechan

ic

al

stress.

Subwoofer drivers operated

at

these levels

of

power

are NOT covered

under

warranty.

When designing systems

with

our

drivers,

it

is very

important

to

achieve a good

power

match between

the

subwoofer amplifier

and

the

subwoofer driver's capabilities. The

power

levels listed

in

the

above

chart represent continuous

(RMS)

amplifier power

per

woofer

and

assume

that

the

user will regularly

make

full use

of

that

power wi

thout

drastically overdriyj

na

the

amplifier(s).

Make

sure you factor system

impedance

and

the

total

number

of

subwoofers into your calculations. Adhering

to

these power recommendations will result

in

systems

that

are

both reliable

and

enjoyable.

JL

AUDIO

LIMITED WARRANTY (USA)

Marine Subwoofer Components

JL

AUDIO

wa

rr

ants this speaker

to

be

free

of

def

ects in materials and

workmanship for a period

of

two

(2)

years from

the

original date

of

purchase.

Damage caused

by

the following

is

no

t covered under warranty: accident,

misuse, abuse,

product

mod

ifi

cation or neglect, failure

to

foll

ow

installation

instruction

s,

una

uth

or

ized repair attemp

ts.

misrepresentations by

the

s

el

le

r.

This

warranty does n

ot

cover incidental

or

conse

qu

e

nt

ial damag

es

and does n

ot

cover

the

cos

t of rem

ov

i

ng

or

re

in

sta

lling the unit(s). Co

sm

etic damage

due

to

accident

or

norm

al

wear and tear

is

not

covered under warranty.

This

warranty

is

not

transferable

and

applies

only

to

the

original

purchaser

of

the

product from an authorized

JL

AUDIO dealer. Warranty

is

voided

if

the

factory-applied product serial number

is

removed

or

defaced.

Should service be nec

essary

under this war

ra

nty for any reason due

to

manufacturing

de

f

ec

t

or

malfuncti

on,

JL

A

UD

IO wi

ll

, at its discretion, repair or

re

pl

ace

the def

ec

tive product with new or remanu

fa

ctured product at

no

c

ha

rge.

Any appli

cab

le implied warranti

es

are

limited in duration

to

the period

of

the express warranty

as

provi

ded

herein

be

ginning with the date

of

the original

purchase at

reta

il

, and no war

ra

nties, whether

express

or

im

pl

ied, s

ha

ll

apply to

th

is

product

th

erea

fter. Some

sta

t

es

do not

al

l

ow

limitations on i

mp

li

ed warranti

es

,

therefore

th

ese

exclusions may

not

apply to you. This warranty giv

es

you specific

legal rights, and you may also h

ave

other rights which

var

y

fr

om state to state.

If

you

need

service on

your

JL

AUDIO product:

A

ll

warranty returns should be sent

to

JL

AUD

IO

freight prepaid through an

authorized JL A

UDIO

dealer a

nd

must be

acc

ompanied by proof

of

purchase

(a

copy

of

the original

sa

l

es

receipt) Di

re

ct

returns from consume

rs

or

no

n-

authorized

dea

l

ers

will be refu

sed

unle

ss

specifically authorized by

JL

AUDIO

with

a va

li

d retu

rn

authorization n

um

ber. Warranty expiration on products returned

without

pr

oof

of purc

hase

wi

ll be determined from the manufacturing date code.

Cove

rag

e m

ay

be in

va

lidated

as

th

is

date is previous to

pur

c

hase

date. Return only

defective components. Non-defecti

ve

items

rec

eived will be returned freig

ht

-

collect C

us

tomer

is

responsible for

sh

i

pp

ing charg

es

and

ins

uran

ce

in sending the

product

to

JL

AUDIO

Fre

ight

da

mage on returns

is

not cove

re

d under warra

nty

.

Al

ways

in

cl

ude pr

oof

of

purchase

(s

al

es

receip

t).

For Service Information in

the

U.S.A. please call:

Pri

nt

ed

in

U

.S

.A

JL Audio customer

se

rvice: (954) 443

-1

100 during normal

bu

siness hours (Eastern Time)

JL

Audio, Inc

10

369 North Commerce

Parkway,

Mi

rama

r, FL

3302

5

International Warranties:

Pr

od

ucts purc

ha

se

d o

ut

side the

Un

ited S

ta

tes of America are covered only by that countr

y's

distr

ib

ut

or

an

d not by

JL

Audio, Inc

JLM121

86

_S

KU#0110

74

JL Audio M121B6 Owner's manual

JL Audio M121B6 Owner's manual

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