Boss Evolution EV1500M User Manual Download Page 2

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Troubleshooting

EVOLUTION MOSFET Amplifier User’s Manual - page 15

Specifications

EVOLUTION MOSFET Amplifier User’s Manual - page 16

EVOLUTION MOSFET Amplifier User’s Manual - page 5

EVOLUTION MOSFET Amplifier User’s Manual - page 12

EVOLUTION MOSFET Amplifier User’s Manual - page 13

CONTENTS

EVOLUTION MOSFET Amplifier User’s Manual - page 1

U S E R ’ S M A N U A L

EVOLUTION MOSFET Amplifier User’s Manual - page 4

General precautions

EVOLUTION MOSFET Amplifier User’s Manual - page 3

Features

About 2 Ohm operation

EVOLUTION MOSFET Amplifier User’s Manual - page 6

EVOLUTION MOSFET Amplifier User’s Manual - page 11

EVOLUTION MOSFET Amplifier User’s Manual - page 10

EVOLUTION MOSFET Amplifier User’s Manual - page 8

EVOLUTION MOSFET Amplifier User’s Manual - page 14

EVOLUTION MOSFET Amplifier User’s Manual - page 7

EVOLUTION MOSFET Amplifier User’s Manual - page 9

If you experience operation or performance problems with this product, compare your
installation with the electrical wiring diagram on the previous pages. If problems persist,
read the following troubleshooting tips which may help eliminate the problems.

Protection LED
comes on when
amplifier is
powered up.

Check for short circuits on speaker leads.

Turn down the volume control on the head unit to prevent overdriving.

Remove speaker leads, and reset the amplifier. If the Protection LED still
comes on, then the amplifier is faulty and needs servicing.

High hiss in the
speakers.

Disconnect all RCA inputs to the amplifiers. If the hiss disappears, then
plug in the component driving the amplifier and unplug its inputs. If the
hiss disappears at this point, go on until the faulty/noisy component is
found.
It is best to set the amplifier's input level control as low as possible. The
best subjective signal-to-noise ratio is achieved in this manner. Try to set
the head unit as high as possible (without distortion) and the amp input
level as low as possible.

Squealing noise
from speakers.

Check for improperly grounded RCA interconnects.

Distorted sound.

Check that the Input Level Control is set to match the signal level of the
head unit. Always try to set the Input Level as low as possible.

Check that all crossover frequencies are properly set.

Check for short circuits on the speaker leads.

Amplifier gets
very hot.

Check that the minimum speaker impedance for the amp model is correct.

Check that there is good air circulation around the amp. In some
applications, it may be necessary to add external cooling fan(s).

Engine noise
(static type)

This is usually caused by poor quality RCA cables,which can pick up
radiated noise. Use only the best quality cables, and route them away
from power cables.

Engine noise
(alternator
whine)

Check that speaker leads are not shorted to the vehicle chassis.

Check that the RCA grounds are not shorted to the vehicle chassis.

Check that the head unit is properly grounded.

Tri-Mode

Before installing and using your
new Sound Storm amplifier, please
become familiar with all the infor-
mation contained in this manual.

Please keep this manual in a safe
place for future reference.

• Do not open or attempt to repair
this unit yourself. Dangerous high
voltages are present which may result
in electric shock. Refer any repairs to
a qualified service technician.

• To avoid risk of electronic shock or
damage to the amplifier, do not permit
any of this equipment to become
damp or wet from water or drinks. If
this does occur, immediately unplug
the power wires and send the amplifier
to your local dealer or service center
as soon as possible.

• If there is smoke or any peculiar
odor present during use or if there is
damage to any of the component
enclosures, immediately unplug the
power wire and send the amplifier to
your local dealer or service center as
soon as possible .

7. Insert fuse(s) into the battery fuse
holder(s).

8. Recheck all connections before
powering up the amplifier.

9. Set all level controls to minimum
position, and set all crossover
controls/switches to the desired
frequency points.

10. Power up the head unit and the
amplifier. Then set the volume control
on the head unit to about 3/4 volume,
and adjust the amplifier’s input level
control(s) to just below the level of
distortion.

11. Further fine tuning of the various
controls may be necessary to obtain best
results.

Your EVOLUTION amplifier has been
designed to 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
100Hz) produces an acoustic coupling
effect. This acoustic coupling effect
increases your power output by about
3dB per speaker, or the equivalent of
an additional 10W per speaker.

When operating at 2 Ohms, the
amplifiers will increase their output
power by approximately 50%.

The

current draw will also increase by
about the same amount, so be sure
you have enough current to run the
amplifiers into a 2 Ohm load.

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

Low-level (RCA) input wiring is preferred for best audio performance. Always use
a high-quality RCA cable for best audio performance.

Tri-Mode

RIGHT
Speaker

LEFT
Speaker

To Audio

Outputs of head

unit or signal

processor

The high level input(s) should only be used when your head unit lacks RCA outputs.
If the RCA outputs are not present, connect the speaker outputs from the receiver
to the high level input connector of the amplifier. Be sure to observe polarity to
avoid audio phase problems.

Low-level (RCA) input wiring is preferred for best audio performance. Always use
a high-quality RCA cable for best audio performance.

EV2.1000, EV2.1200, EV2.1600,
EV2.2000, EV2.2600, and EV2.3000

EV2.1000, EV2.1200, EV2.1600,

EV2.2000, EV2.2600, and EV2.3000

EV4.1600, EV4.2000, EV4.2400

and EV4.2800

EV2.1000, EV2.1200, EV2.1600,

EV2.2000, EV2.2600, and EV2.3000

EV4.1600, EV4.2000, EV4.2400

and EV4.2800

To Audio

Outputs of head

unit or signal

processor

Introduction

What is included?

Features

About 2 Ohm operation

General precautions

Installation precautions

Mounting the amplifier

Connecting the amplifier

Low level input wiring

High level input wiring

2CH Power and Speaker wiring

2CH and Bridged Modes

2CH Power and Speaker wiring

TriMode

4CH Power and Speaker wiring

4CH and Bridged Modes

4CH Power and Speaker wiring

TriMode

MonoBlock Power

and

Speaker wiring

Troubleshooting

Specifications

Congratulations on your
purchase of a Sound Storm
Laboratories EVOLUTION
Amplifier.

It has been designed, engineered
and manufactured to bring you
the highest level of performance
and quality, and will afford you

years of listening pleasure.

Thank you for making Sound
Storm your choice for car audio
entertainment!

All specifications subject to change without notice.

page

MAX POWER

into 2 Ohms

RMS POWER

into 4 Ohms

BRIDGED POWER

into 4 Ohms

Min. speaker
impedance

THD

Frequency response

Signal-to-noise ratio

Channel separation

Damping factor

Crossover range

low pass

high pass

Bass boost

Fuse rating

Dimensions:

10" x 2

-3/8

" x ...

(254mm x 59mm x...)

MODEL

4-Channel
MOSFET Amplifiers

MAX POWER

into 2 Ohms

RMS POWER

into 4 Ohms

BRIDGED POWER

into 4 Ohms

Min. speaker
impedance

THD

Frequency response

Signal-to-noise ratio

Channel separation

Damping factor

Crossover range

low pass

high pass

Bass boost

Fuse rating

Dimensions:

10" x 2

-3/8

" x ...

(254mm x 59mm x...)

MODEL

2-Channel MOSFET Amplifiers

MonoBlock
MOSFET
Amplifiers

2500W x 1

1000W X 1

n/a

2 Ohm Stereo
4 Ohm Mono Bridged

0.01%

9Hz-50kHz

103dB

90dB

125+

35Hz-160Hz

200Hz (fixed)

Variable 0 - +18dB

25A x 2

15-1/2"
(394mm)

EV2500M

SYMPTOM

POSSIBLE REMEDY

EVOLUTION MOSFET Amplifier User’s Manual - page 2

Introduction

With the Sound Storm Laboratories
EVOLUTION MOSFET amplifier series,
we are introducing eleven new
amplifiers, all designed in the USA.
This new series includes a two
monoblock amps, six 2-channel, and
four 4-channel amplifiers.

All EVOLUTION models feature variable
low pass and high pass crossovers
and variable input gain controls. They
also incorporate an input voltage
sensistivity selector for added system
flexibility.

For further flexibility in the use of a
subwoofer, 0-+18dB Bass Boost
control has been included on all
amplifiers. You can control the
subwoofer level with the remote level
control module.

Sound Storm understands that
amplifiers are placed in many different
kinds of installations, so we
incorporated a very flexible system of
controls in these amplifiers in order to
help you integrate the amp into your
system regardless of the nature of your
input source.

What is included?

When first unpacking your new
amplifier, please check first that the
package contains all of the items
below. If something is missing, contact
the store where you purchased the
amplifier.

• EVOLUTION amplifier

• Remote subwoofer level control

•High input cable with connector

• Four (4) mounting screws

Two
Channel
Mode

Connect the Positive (+) terminal of the
subwoofer to the L (+) amplifier terminal.

Connect the Negative (-) terminal of the
subwoofer to the R (-) amplifier terminal.

Bridged
Mode

Connect the Negative (-) terminal of the RIGHT
subwoofer to the CH2 (-) amplifier terminal.

Connect the Positive (+) terminal of the RIGHT
subwoofer to the CH1 (+) amplifier terminal.

Connect the Negative (-) terminal of the LEFT subwoofer
to the CH4 (-) amplifier terminal.

Connect the Positive (+) terminal of the LEFT subwoofer
to the CH3 (+) amplifier terminal.