Swiss Audio SMX2400C User manual

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Owner’s Manual
Please Read This Manual Before
Operating Unit..

Table of Contents
Introduction....................................................................................................................3
Features And Specifications..........................................................................................4
Controls & Functions..............................................................................................5 - 12
Planning & Mounting Your System..............................................................................13
Wiring Diagrams...................................................................................................14 - 16
Adjusting & Tuning.......................................................................................................17
Troubleshooting...........................................................................................................18
Warning / Disclaimer....................................................................................................19
Warranty...............................................................................................................20 - 21
Notes............................................................................................................................22

INTRODUCTION:
Since our inception in the car audio world, We at Swiss Audio have committed ourselves to manufacturing
high quality car audio products with a creative edge unlike any other brands in the industry.
European design and heavy handed development make Swiss Audio’s line of precision car audio a popular
and identifiable entity in today’s highly competitive market. The family of Head Units, Amplifiers, Subwoofers,
Enclosures, Processors, Full Range speakers, Capacitors and Component speakers first gained recognition
in Europe and was brought to the U.S.A. to quench an entirely new sonic thirst.
The classic silver-faced finish and famous Swiss Audio logo have captured the eyes and ears of enthusiast
worldwide to push Swiss Audio to a new plateau of car audio design. Swiss Audio Products have a proven
track record which is now worldwide.
We at Swiss Audio stand behind our quality, workmanship and service and continually strive to provide the
best possible products your money can buy. Compare Swiss Audio products against anything the competi-
tion has to offer. We are confident you will be pleased with your purchase.
Thank you,
Swiss Audio
3

FEATURES AND SPECIFICATIONS
4
Features and Specificatins
 Full Range Hybrid Digital Power Amplifier
 Full Variable HPF / LPF X – Over (50 – 250Hz)
 Variable Bass Boost Control (0 - +12dB)
 Bufferend Line Outputs
 THD: 0.04%
 S/N Radio: >100dB (+/- 3dB)
 Frequency Response: 1watt @ 4 Ohms: 10Hz – 30kHz
Recommended Fuse Size
 SMX2400C: 30A x 1
 SMX2600C: 25A x 2
 SMX4400C: 20A x 2
 SMX4600C: 25A x 2
Dimensions (inches)
 SMX2400C: 6.60” (W) x 2” (H) x 9.45” (L)
 SMX2600C: 6.60” (W) x 2” (H) x 11.42” (L)
 SMX4400C: 6.60” (W) x 2” (H) x 11” (L)
 SMX4600C: 6.60” (W) x 2” (H) x 12.60” (L)
Power Output
 SMX2400C: 200watts x 2 @ 4 ohms stereo
320watts x 2 @ 2 ohms stereo
500watts x 1 @ 4 ohms mono
 SMX2600C: 300watts x 2 @ 4 ohms stereo
400watts x 2 @ 2 ohms stereo
600watts x 1 @ 4 ohms stereo
 SMX4400C: 200watts x 4 @ 4 ohms stereo
280watts x 4 @ 2 ohms stereo
400watts x 2 @ 4 ohms bridged
 SMX4600C: 300watts x 4 @ 4 ohms stereo
400watts x 4 @ 2 ohms stereo
600watts x 2 @ 4 ohms bridged

CONTROLS & FUNCTIONS
5
Controls & Functions
SMX24OOC

CONTROLS & FUNCTIONS
6
Controls & Functions
SMX26OOC

CONTROLS & FUNCTIONS
7
Controls & Functions
SMX4400C

CONTROLS & FUNCTIONS
8
Controls & Functions
SMX46OOC

CONTROLS & FUNCTIONS
9
This control adjusts the amplifier’s input sensitivity. Input sensitivity is variable from 200 Millivolts to 8 volts. Clockwise
increases sensitivity. Counterclockwise decreases sensitivity. This know is not a volume control for the amplifier. The
amplifier can be driven to full power with a wide range of signals levels. A lower signal level will require increased sensitivity
for full power. A higher signal level will require decreased sensitivity.
These inputs are for signal cables from the source unit. Always use high quality shielded RCA cables.

CONTROLS & FUNCTIONS
10
The LINE OUT allows you to build multiple amplifier systems without having to use splitter cords to distribute the signal. Now
it is simply a matter of bringing one set of RCA into the first amplifier, then using the LINE OUT RCA jacks as the feed to the
next amplifier.
By using the BASS BOOST function, bass notes at 45Hz are emphasized as much as 12dB
Frequency Variable: 50Hz - 250Hz
Adjust the crossover for your chosen installation method.
-LOW: Low pass filter - only bass tones (50Hz - 250Hz) go to speakers. Use with woofer or subwoofer.
-FULL: No filter - all tones go to speakers. Use with full - range speakers, or with external crossovers.
-HIGH: High pass filter - blocks very low tones (50Hz - 250Hz) from the speakers.

CONTROLS & FUNCTIONS
11
POWER: This GREEN LED will illuminate when the amplifier is turned “ON”. If it fails to illuminate, check the power connec-
tions to the Amplifier and fuses.
PROTECTION: The amplifier protection circuitry will disable the amplifier If there is an overload, short circuit, or if extremely
high temperature conditions are detected. When the protection mode is in operation, the LED indicator on the side panel will
be illuminated, indicating the amplifier has gone into a self - preservation mode.
If you observe that the Protection LED is lit, please check the system carefully to determine what has caused the protection
circuit to engage. The amplifier can be reset by turning the remote power off and then on again. If the amplifier shuts down
due to a thermal overload condition, please allow it to cool down before restarting. If the amplifier shuts down because of an
input overload or short circuit, be sure to repair these conditions before attempting to power up the amplifier again.
To avoid unwanted ignition noise caused by ground loops, it is essential that the Amplifier’s ground is connected to a clean,
bare, metal surface of the vehicle’s chassis.
Note: GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3FT. (1 METER).

CONTROLS & FUNCTIONS
12
To remote wire car stereo.
This amplifier is turned “ON” remotely when vehicle’s stereo is turned “ON”
Note: IF YOUR RADIO DOES NOT HAVE +12 VOLT OUTPUT LEAD WHEN THE RADIO IS TURNED ON, THE “REMOTE”
TERMINAL ON THE AMPLIFIER CAN BE CONNECTED TO VEHICLE’S ACCESSORY CIRCUIT THAT IS LIVE WHEN THE
KEY IS “ON”
Due to the power requirements of the Amplifier, this connection should be made directly to the positive(+) terminal of the
battery. For safety measure, install an in - line fuse holder (Not Included) as close to the battery positive(+) terminal as
possible with an ampere rating not to exceed total value of fuses in Amp.

PLANNING & MOUNTING YOUR SYSTEM
13
The mounting position of your Amplifier will have a great effect on its ability to dissipate the heat generated during normal
operation. It has an ample heat sink for heat dissipation, and is also designed with a thermal shutdown circuit (for heat
protection) circuit. DO NOT enclose the amplifier in a small box or cover it so that air is not able to flow freely.
Temperatures in car trunks have been measured as high as (155 degrees) in the summer time. As the thermal shut down point
for the amplifier is (158 degrees), it is easy to see that it must be mounted for maximum cooling capability. To achieve
maximum advantage of convection air flow in an enclosed trunk, mount the amplifier in a horizontal position.
Cooling requirements are considerably relaxed when mounting inside the passenger compartment since the driver will not
allow temperatures to reach a critical point. Floor mounting under the seat is usually satisfactory as long as there is at least 1
inch of clearance (2.54 cm) above the Amplifier’s fins for ventilation.
A. Select a suitable location that is convenient for mounting, is accessible for wiring, and has ample room for air circulation
and cooling.
B. Use the amplifier as a template to mark the mounting holes. Remove the Amplifier and drill holes. Use extreme caution,
Inspect underneath surface before drilling!
C. Secure the Amplifier using the screws provided.

WIRING DIAGRAM
14
SMX2400C / SMX2600C

Wiring Diagrams
SMX4400C / SMX4600C
15

Wiring Diagrams
SMX4400C / SMX4600C
16

17
ADJUSTING & TUNING
Tuning on The Amplifier
The amplifier automatically turns on a few seconds after you turn your vehicle’s ignition switch to ACC or ON or turn on your auto sound system,
depending on how you wire the system. The POWER indicator on the top of the amplifier lights up when the amplifier is on.
Important: Your amplifier requires 30 amps or more of power from your vehicle’s battery during operation. To protect your
battery from discharging, do not operate the amplifier unless your vehicle is running.
Adjusting The Audio Level
For the best performance, you must set LEVEL (MIN / MAX) on the side of the amplifier to adjust the level of the audio signals that enter the amplifier.
1. Use a screwdriver to turn LEVEL (MIN / MAX) fully counterclockwise to MIN.
2. Turn the auto sound system’s volume control to about one - third of its full range.
3. Adjust LEVEL (MIN / MAX) to a comfortable listening level.
4. Turn up the auto sound system’s volume control until the sound begins to distort. Then immediately turn the volume down
to a point just before where the distortion began.
Caution: Never turn up the auto sound system’s volume control more than needed to adjust the audio level, more than two thirds of its maximum volume.
5. Adjust LEVEL (MIN / MAX) until the sound is at the maximum level you want the amplifier to produce.
6. Adjust the auto sound system’s volume control to a comfortable listening level.
NOTE:
Raising the Bass frequency allows higher
frequencies to reach the bass speakers while
blocking lower frequencies from midrange
speakers. Lowering the Bass frequencies
allows lower frequencies to reach the
midrange speakers while blocking higher
frequencies from bass speakers.

18
TROUBLESHOOTING
SYMPTOMS CHECK REMEDY
NO SOUND Is the power LED illuminated? Check fuses in amplifier.
(NO) Be sure Turn - on lead is connected Check signal leads. Check gain control.
Check Tuner / Deck volume level. Clean contacts on fuse holders.
Is the Diagnostic LED
illuminated? (YES)
No power to power wire Repair power wire or connections
No power to remote wire
with receiver on
Fuse broken
Check Speaker Leads
Check Audio Leads
Check Speaker load
impedance
Shut down
Speaker wires short
Check for speaker short or amplifier overheating.
AMP NOT SWITCHING
ON
NO SOUND IN ONE
CHANNEL
AMP TURNING OFF
MEDIUM / HIGH
VOLUME
PROTECTION LAMP ON
Check connections to radio.
Replace fuse
Inspect for short circuit or an open connection.
Reverse Left and Right RCA inputs to determine if it is occurring before the amp.
Be sure proper speaker load impedance recommendations are observed.
(If you use an ohmmeter to check speaker resistance, please remember that
DC resistance and AC impedance may not be the same.
Turn radio down
Wait for AMP to cool
Separate speaker wires and insulate

19
WARNING & DISCLAIMER
Investigate the layout of your vehicle thoroughly before drilling or cutting. Take care when you work near the gas
tank, gas lines, hydraulic lines, electrical components and electrical wiring. Do not use the equipment unmounted.
Attach this system securely to prevent damage, particularly in the event of an accident or aggressive driving.
Do not mount the system so that wire connections are unprotected or are subjected to pinching or damage from
nearby objects. Before connecting or disconnecting power connections at the system power terminals, disconnect
the +12V DC wire at the battery end. Confirm that your source unit and other equipment are turned off while
connecting the input terminals. If you need to replace the power fuse, replace it only with a fuse identical to the
provided fuse.
Using a fuse of different type or rating may result in damage to the system, which is not covered by the
manufacturer's warranty. Do not install any product where it may be subjected to excessive heat, moisture and
dust or where it may be repeatedly kicked, brushed or bumped.
Make absolutely sure that the terminals for the products are connected to the proper inputs and outputs from the
source unit. Never run the wiring on the outside of the vehicle or under it where it can be damaged by road
hazards or any moving parts of the vehicle. Use existing wire channels, sills, panels and molding strips inside the
vehicle to hide the wiring for safety and a neat appearance.
DISCLAIMER
IMPORTANT: Never cut any metal that is an integral part of the vehicle's safety or structural support system. If
you are unsure, it is best to have the product professionally installed by an Authorized Swiss Audio Dealer. Never
sacrifice your safety for sound.