8
9
Installation of the Speaker Outputs
The speaker cables should be polarized (marked) so that you can easily identify which is positive and which is negative.
Minimum gauge is
11 AWG
. Keep the cables well insulated and avoid metal parts as these may damage the insulation.
EX1200EQ (1 OHM):
2 x 2 OHMS
EX1200EQ (2 OHMS):
2 x 4 OHMS
• WITH 2 SPEAKERS
Troubleshooting
NO POWER
• The power cables are not connected correctly (terBAT, GND and REM). Verify that all the connections have
electrical and mechanical contact.
• The fuse/circuit breakers are defective or blown. Replace them, making sure that the replacements are the correct
ones!
NO SOUND
• The speaker cables or RCA plugs are not connected correctly.
• Verify that the LEVEL control is at the lowest setting. Check the amplifier filter controls.
NO SOUND. RED ALERT PROT BLINKING:
• See diagnostic guide
• The speakers or cables are defective, so check speakers, cables and connections.
POOR SOUND QUALITY (DISTORTIONS):
• The speakers are overloaded. Decrease and readjust the volume level (see entry “LEVEL - LEVEL CONTROL”)
WEAK BASS:
• Speaker cables (+) and (-) are switched or the speaker is out of phase (see entry “INSTALLING SPEAKER OUTPUT”).
Also check BASS control adjustment.
ENGINE, HORN, TURN SIGNAL, INTERFERENCE:
• Use suppressing/insulated cables on the spark plugs.
• Use capacitors on the alternator, horn and ignition.
• Run the shielded input cable away from any other cables, as they are particularly prone to interference.
• Install a separate power source (+12V) for the sound system. Use a fuse/circuit breaker 30 centimeters from the
battery as the best precaution.
• Ground the amplifier properly. Remove paint from the chassis at the selected point, and connect the wire using a
grounded terminal. In order to prevent rust, insulate it with paint.
Do not loop the ground. Avoid using multiple grounds. If possible, use a star connection, in which all the grounds run
from a single point.
Diagnost Guide
In the eventuality of any problems, the amplifier will power down and the
RED LED (PROT)
light will begin to blink.
Depending on the problem, the
RED LED (PROT)
light will flash a certain number of times. The following table summarizes
the diagnostics:
Output short circuit
or overload.
Overheating.
Low battery.
Battery overload or volta-
ge greater than allowed.
Check to make sure the speaker cables are
pro-perly isolated.
Verify minimum impedance.
Make sure the equipment is installed in a
well ventilated location.
When used for long periods, the battery will
run down. Recharge the battery.
Have the battery and/or alternator checked
by a professional.
Number of Flashes
Problem
Solution
1
2
OVER
BAT
4
3
LOW
BAT
NOTE:
In the event that the
RED LED (PROT)
light is flashing continuously, unplug the speakers and turn the
equipment back on. If the problem persists, contact
STETSOM
tech support.
Technical Specifications
Channels:
Power @ 14.4V - 1 Ohm (RMS):
Power @ 14.4V - 2 Ohms (RMS):
Power @ 14.4V - 4 Ohms (RMS):
Power @ 14.4V - 8 Ohms (RMS):
Min. Output Impedance:
Input Impedance:
Input Sensitivity:
T.H.D:
Signal to Noise Ratio:
Freq. Resp. (-3dB) @ 1 Ohm:
Crossover Low Pass:
Crossover High Pass:
EQ - BASS @ 45Hz:
EQ - MID BASS @ 270 Hz:
EQ - MID HIGH @ 2KHz:
Over Clip (Power):
Power Supply:
Consumption Music:
Consumption BASS:
Dimensions (H x W x L):
Weight:
Any updates made in this manual will be available for consumers to consult without any charge on the brand’s site.
It is recommended that the updated manual be consulted whenever necessary.
The measured data are based on equipment from the STETSOM laboratory. Frequency reference of 1Khz with THD + N to ≤10%
in impedances referring to the indicated in each measurement. The electronic components and the manufacturing process can
present manufacturing variations, thus leading to a variation in the measurements made.
EX1200EQ (1 OHM):
4 x 4 OHMS
EX1200EQ (2 OHMS):
4 x 8 OHMS
• WITH 4 SPEAKERS
EX1200EQ 1 OHM
1
1560W
970W
—
1 Ohm
26K Ohms
0.2V
≤ 10% THD
>90dB
10Hz ~ 25KHz
50Hz ~ 25KHz
10Hz ~ 700Hz
±10dB
±10dB
±10dB
+15%
9.5 ~ 15Vdc
1 ~ 57A
1 ~ 115A
64 x 260 x 170 mm
1.7 Kg
EX1200EQ 2 OHMS
1
—
1410W
860W
—
2 Ohms
25K Ohms
0.2V
≤ 10% THD
>90dB
10Hz ~ 25KHz
50Hz ~ 25KHz
10Hz ~ 700Hz
±10dB
±10dB
±10dB
+15%
9.5 ~ 15Vdc
1 ~ 56A
1 ~ 112A
64 x 260 x 170 mm
1.7 Kg
EU Declaration of Conformity (DoC):
EX1200EQ - 1 OHM:
www.stetsom.com.br/certifications/EX1200EQ_1--EUDoC2014-30-EU.pdf
EX1200EQ - 2 OHMS:
www.stetsom.com.br/certifications/EX1200EQ_2--EUDoC2014-30-EU.pdf
