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Troubleshooting

STEALTH MOSFET Amplifier User’s Manual  - page 14

Specifications

STEALTH MOSFET Amplifier User’s Manual - page 15

STEALTH MOSFET Amplifier User’s Manual - page 5

STEALTH MOSFET Amplifier User’s Manual - page 7

STEALTH MOSFET Amplifier User’s Manual - page 11

STEALTH MOSFET Amplifier User’s Manual - page 13

CONTENTS

STEALTH MOSFET Amplifier User’s Manual - page 1

U S E R ’ S   M A N U A L

STEALTH MOSFET Amplifier User’s Manual - page 4

General precautions

STEALTH MOSFET Amplifier User’s Manual  - page 3

Features

About 2 Ohm operation

STEALTH MOSFET Amplifier User’s Manual - page 6

STEALTH MOSFET Amplifier User’s Manual - page 9

STEALTH MOSFET Amplifier User’s Manual - page 10

STEALTH MOSFET Amplifier User’s Manual - page 12

STEALTH MOSFET Amplifier User’s Manual - page 8

Notes

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.

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.

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

CH1
Speaker

CH2
Speaker

Before installing and using your
new Sound Storm Laboratories
amplifier, please become familiar
with all the information 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 STEALTH 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

4-Channel Amplifiers

To Speaker Terminals
of head unit

To Speaker Terminals
of head unit

2

Introduction

2

What is included?

3

Features

3

About 2 Ohm operation

4

General precautions

4

Installation precautions

4

 

Mounting the amplifier

5

 

Connecting the amplifier

6

Low level input wiring

7

High level input wiring

8

2CH Power and Speaker wiring

2CH Mode

9

2CH Power and Speaker wiring

Bridged Mode

10

2CH Power and Speaker wiring

TriMode

11

4CH Power and Speaker wiring

4CH Mode

12

4CH Power and Speaker wiring

Bridged Mode

13

4CH Power and Speaker wiring

TriMode

14

Troubleshooting

15

Specifications

Congratulations on your
purchase of a
Sound Storm Laboratories

STEALTH 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 Laboratories your choice

for car audio entertainment!

All specifications subject to change without notice.

page

RMS POWER

into 4 Ohms

MAX POWER

into 2 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:
(11-

1/2

" x 2

-7/16

" x ...)

MODEL

STA412

Four Channel MOSFET Car Audio Amplifiers

250W x 4

400W X 4

800W x 2

2 Ohm Stereo
4 Ohm Mono Bridged

0.01%

9Hz-50kHz

103dB

90dB

125+

35Hz-160Hz

200Hz (fixed)

Variable 0 - +18dB

25A x 2

13-3/4"

STA416

STA220
STA216
STA212
STA208
STA206

Two Channel
MOSFET Car Audio
Amplifiers

STA416
STA412

Four Channel
MOSFET Car Audio
Amplifiers

RMS POWER

into 4 Ohms

MAX POWER

into 2 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:
(11-

1/2

" x 2

-7/16

" x ...)

MODEL

Two Channel MOSFET Car Audio Amplifiers

SYMPTOM

POSSIBLE REMEDY

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

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

Two
Channel
Mode

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

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

CH

3-

CH

4+

CH

4-

CH

3+

Bridged
Mode

Four
Channel
Mode

Bridged
Mode

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

Connect the Postive (+)  terminal of the RIGHT
subwoofer to the CH3(+) amplifier terminal.

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

Connect the Postive (+)  terminal of the LEFT
subwoofer to the CH1(+) amplifier terminal.

To REAR Audio Outputs of

head unit or

signal processor

To FRONT Audio Outputs
of head unit or
signal processor

To Speaker Terminals
of head unit

220W x 4

300W X 4

600W X 2

2 Ohm Stereo
4 Ohm Mono Bridged

0.01%

9Hz-50kHz

103dB

90dB

125+

40Hz-150Hz

200Hz (fixed)

Variable 0 - +18dB

40A x 1

11"

Содержание STA206

Страница 1: ...11 4CH Power and Speaker wiring 4CH Mode 12 4CH Power and Speaker wiring Bridged Mode 13 4CH Power and Speaker wiring TriMode 14 Troubleshooting 15 Specifications Congratulations on your purchase of...

Страница 2: ...rol has been included on all amplifiers You can control the subwoofer level with the remote level control module Sound Storm Laboratories understands that amplifiers are placed in many different kinds...

Страница 3: ...Silver anodized heatsink Remote subwoofer level control Your STEALTH amplifier has been designed to operate efficiently at loads down to 2 Ohms This means that you can install four 8 Ohm speakers per...

Страница 4: ...et 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 p...

Страница 5: ...cation Then run separate cables from the amplifier to this distribution block and to independent chassis ground points 6 Connect all line inputs and outputs if used using high quality cables Connect a...

Страница 6: ...BOTH the high level and low level inputs from your receiver to your amplifier at the same time 2 Channel Amplifiers STA206 STA208 STA212 STA216 and STA220 To Audio Outputs of head unit or signal proc...

Страница 7: ...Be sure to observe polarity to avoid audio phase problems NOTE Do not connect BOTH the high level and low level inputs from your receiver to your amplifier at the same time 2 Channel Amplifiers STA206...

Страница 8: ...Two Channel Mode SPEAKER IMPEDANCE 2 8 OHMS Connect the Positive terminal of the subwoofer to the R amplifier terminal Connect the Negative terminal of the subwoofer to the L amplifier terminal GN D...

Страница 9: ...Amplifiers Connect the Positive terminal of the subwoofer to the R amplifier terminal Connect the Negative terminal of the subwoofer to the L amplifier terminal Bridged Mode SPEAKER IMPEDANCE 4 8 OHMS...

Страница 10: ...s filter capacitors and a low pass filter inductor into the wiring as shown below Be sure to check the table at the bottom of this page to determine the correct capacitor and inductor values for the c...

Страница 11: ...16 4 Channel Amplifiers Four Channel Mode SPEAKER IMPEDANCE 2 8 OHMS SPEAKER IMPEDANCE 2 8 OHMS GN D RE M B ATT F USE S CH2 CH1 CH4 CH3 B R I D G E D M O D E B R I D G E D M O D E CH3 Speaker CH4 Spea...

Страница 12: ...e RIGHT subwoofer to the CH3 amplifier terminal Connect the Negative terminal of the LEFT subwoofer to the CH2 amplifier terminal Connect the Postive terminal of the LEFT subwoofer to the CH1 amplifie...

Страница 13: ...bottom of this page to determine the correct capacitor and inductor values for the crossover frequency you wish to achieve CH1 Speaker CH2 Speaker Component values for 6dB Passive Crossover FREQUENCY...

Страница 14: ...ck the RCA interconnect cables Check all speaker wiring High hiss in the speakers Disconnect all RCA inputs to the amplifiers If the hiss disappears then plug in the component driving the amplifier an...

Страница 15: ...Bass boost Fuse rating Dimensions 11 1 4 x 3 x MODEL Two Channel MOSFET Car Audio Amplifiers 170W x 2 400W X 2 800W x 1 2 Ohm Stereo 4 Ohm Mono Bridged 0 01 9Hz 50kHz 103dB 90dB 125 35Hz 160Hz 200Hz...

Страница 16: ...Notes...

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