BOSS MR250.4 User Manual

2

CHANNEL

4

CHANNEL

User's Manual

BRIDGEABLE

MARINE

BRIDGEABLE

MARINE

POWER

MOSFET

AMPLIFIER

MOSFET

AMPLIFIER

o~s

~

MR400.2

MR250.4

Two Channel High Marine

Four High Marine

---

Power

MOSFET

Audio

Amplifier

Channel Power

MOSFET

Audio

Amplifier

page

2

3

4

USER'S

CONTENTS

Introduction What

is

included?

Features

About 2 Ohm General

precautions

MANUAL

operation

Congratulations purchase

of

a

:lO~:S

oWIlX'n~

on

your

Marine

Amplifier.

It has been designed, engineered and manufactured the highest level

to

bring you

of

performance

and quality, and will afford you

of

years

listening pleasure.

Thank you for making

!9.~

Marine

your choice for

marine audio entertainment!

4 Protection

5 Installation

5

Fuses Mounting

6

Connecting

8

Low

level

9 High level

10

Power

2 Channel

12

Power

4 Channel

14

Troubleshooting

5

Specifications

and

Amplifier

and

Amplifier

circuitry

precautions

the

amplifier

the

amplifier

input

wiring

input

wiring

speaker

wiring

MMne

MOSFET A.rnpl1fier Us.er's Manual -

poge

1

Introduction

With the amplifier series, we are introducing two specifically for marine audio installations. This new series includes a 2-channel amplifier and a 4-channel amplifier.

All

highp;"S's and low pass crossovers. For further flexibility subwoofer. a variable bass control has been included. control the subwoofer level with the remote level control module.

These

constructed using a special corrosion resistant coating on the printed circuit board high humidity environment.

amplifiers are placed

kinds

Included help you integrate the amp into your system regardless

input source.

~~

Marine

new amplifiers, designed

iiO~S

Marine

!9~

to

prevent damage from the

~

Marine

•

of

installations, so we have also

an

models feature both

in

the use of a

Marine

of

amplifiers are

the marine

understands that

in

many different

Input sensitivity control to

of

the nature of your

MOSFET

boost You

can

What

is

included?

When first unpacking your new amplifier, please check first that the

of

package contains all below. If something

the items

is

missing, contact the store where you purchased the player.

Marine

•

HIgh

•

Four

amplifier

input

(4)

mounting

wire

with

screws

connector

Features

Your new features the following:

• Class

•

Bridgeable

•

TriMode

• MOSFET PWM (Pulse

• 2 Ohm

•

Thermal

•

Soft

•

Remote

• Variable

• Variable crossovers

• Variable

• Exclusive

PC

humidity

!9~1

A-B

operation

capable

Modulated)

stable

with

output

and

protection

turn-on

turn-on/turn-off

input

low

bass

protective

board

to

Marine

outputs

Power

stereo

power

speaker

cirCUit

gain

control

and

fixed

boost

provide damage

amplifier

Width

Supply

operation

increase

short

circuit

high

pass

(0

to

+18dB)

coating

on

from

About 2 Ohm

Your'30~S

desig'n~70

operation

Marine

amplifier has be€n

operate efficiently at loads down to 2 Ohms. This means that you can install four 8 Ohm speakers per channel,

when using parallel wiring.

Increasing the number of woofers per channel at low frequencies (below 100t-fz)

produces

an

acoustic coupling

effect. This acoustic coupling effect

by

increases your power output 3dB per speaker. or the equivalent

about

of

an additional 10W per speaker.

When operating at 2 Ohms. the amplifiers will increase their

outpul

power by approximately 50%. The

draw

will

current about

the same amount,

you have enough current to run the amplifiers into a 2 Ohm load.

also increase

so

be

by

sure

If you lack adequate current, your music reproduction will be distorted.

Manno MOSFET Ampllnlll' U

.....

s Manual - page 2

•

Gold

high

• LED indicators

• Silver

•

Remote

plated

level

power

anodized

subwoofer

RCA

inputs

and

protection

heatsink

low

level

level and

control

Mu

.....

ne

MOSFET ArnpllflOJ

User's

Manual -

pagf:!'

3