STETSOM PA2500.2 Sound Power Amplifier User Manual

: June 10, 2024
: STETSOM

Table of Contents

Features
Before installing
- Please read this manual carefully.
Input and audio controls
Power input and output audio
Indicators LED
- OPERATING LEDS
- PROTECTION LED
Instalation
INSTALLATION OF SPEAKERS
Troubleshooting
Technical specifications
Warranty Term
- WARRANTY CONDITIONS:
- QUESTIONS AND ADVICE:
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

STETSOM PA2500.2 Sound Power Amplifier

Features

Thank you so much for choosing a Stetsom product!
The PA2500.2 was developed to meet the most demanding in low frequencies with deep and intense bass, as well as well defined mid and high frequencies. Its electronic circuit has two pre-equalized channels: Record EQ and Medium EQ. Each of these channels internally has a three band equalizer with defined frequencies and gains to make your sound more prominent, in addition to the FLAT channel that allows amplification of the sound fully balanced.

Before installing

Please read this manual carefully.

All product connections must be made with the product turned OFF.
A fuse must be installed between the amplifier and the battery is required to protect against overcharging. The fuse has to be installed as close to the battery as possible. Check the proper fuse for the amplifier according to its consumption.
Use gauges recommended in this manual to avoid the overheating of the cables to obtain maximum power.
Keep the cables as short as possible to increase sound fidelity and avoid potential power losses.
Route the installation cables as far away as possible from the original vehicle wiring as it may cause interference and noise in your audio system.
Perform the installation in a firm, ventilated and dry place.
Installation must be done by a qualified professional.

If you have questions , contact the store where the purchase or installation was made. For more information please contact our Customer Service: BR +55 18 2104-9412.

Input and audio controls

INPUT: Input of the signal to be amplified. Connect to the radio/player through high quality shielded RCA cables to prevent unwanted noise.
LEVEL : This control allows the adjustment of the signal level at the input of the amplifier that will be sent to the audio output.
BASS BOOST: This control allows the reinforcement of bass, enhancing the frequency of 45Hz by up to +20dB.
COOLER: It provides cooling of the amplifier. Install in a cool place without obstruction of air inlets and outlets.
PRE-EQUALIZATION SWITCH
BASS EQ: In this position, the amplifier will have a tone aimed at playing speakers of the type WOOFER and SUB WOOFER.
FLAT: In this position, the amplifier has a flat response, maintaining the original audio timbre.
MID EQ: In this position, the amplifier will have a timbre aimed at playing MIDDLE type speakers.
The BASS EQ and MID EQ channels, as well as the FLAT channel do not have Low Pass or High Pass filters, so it is necessary to use a audio processor to perform the cuts according to the configuration of your sound.

Power input and output audio

OUTPUT CONNECTOR (SPEAKERS): Output of the amplified signal for connection of the speakers. Check the minimum impedance and polarities before installing.
POSITIVE POWER SUPLY CONNECTOR: Connect to the positive battery terminal through a minimum 0 AWG cable with a fuse/circuit breaker (160A) as close to the battery as possible.
REMOTE CONNECTOR (REM): Allows automatic activation of the amplifier when turning on the radio/player. Connect to the remote output of the radio/player minimum of 20 AWG.
NEGATIVE POWER SUPLY CONNECTOR: Connect to the negative terminal of the battery using a cable minimum of 0 AWG .

Indicators LED

The LEDs provide information about the operation of the product and the activation of protections. If any protection is triggered, the LED for the detected problem will light up and the product will be turned off. Check the cause of the problem and restart the amplifier.

OPERATING LEDS

PROTECTION LED

OPERATING LEDS

TEMP (All protection LEDs) : Indicates that the product has exceeded the operating limit temperature. This protection turns on all the protection LEDs simultaneously. Check that the ventilation inlets and outlets are not obstructed, wait for the product to cool and turn it on again.

Instalation

Specification of the cables for proper installation:

Power connectors (positive/negative) …………………………………. 0 AWG
Remote connector ……………………………………………………………. 18 AWG
Output signal connectors (speakers) …………………………………… 10 AWG
Fuses or circuit breakers …………………………………………………….. 160A

The use of fuse or circuit breaker is mandatory to protect the system from short circuit and overload. Install them as close to the battery as possible.

Installation should only be done by qualified professionals with the product turned OFF.

Instalation

INSTALLATION OF SPEAKERS

This amplifier has a two-channel audio output, which allows the installation of speakers in stereo and bridge mode by joining both channels for the use of WOOFER and SUBWOOFER. It is possible to use stereo and bridge mode together (tri-mode) as in the figure below:
Installation STEREO + BRIDGE (Tri-Mode)

Check the minimum impedance supported by the amplifier.

Troubleshooting

AMPLIFIER DOES NOT TURN ON:

Verify that the cables are connected correctly. Make sure all connections have electrical and mechanical contact.
Fuses or circuit breakers may be defective or blown. Check the condition of the circuit breakers and if it is compatible with the equipment consumption.
Verify that the battery charge is sufficient for the operation of the product.

NO SOUND:

The cables of the speakers or RCA plugs may not be connected correctly or are defective.
Verify that the LEVEL control is not at a minimum.

PROTECTION LED ON:

Check the problem related to the protection LED that was triggered.
Battery voltage outside of that supported by the product.
Product operating at temperatures beyond the permitted limit. Ventilation inlets and outlets on the product may be blocked, preventing the product from cooling. Stop using the product until the temperature is normalized.
Speakers or cables shorted, check the speakers, cables and connections.

SOUND DISTORTIONS:

The speakers may be overloaded or defective, lower the level and remake the level adjustment. This setting can be adjusted as follows:

a) On the radio/player, place any musical signal and set the volume to 80% of the maximum (if the maximum volume of the radio /player is 45 (100%), set to 36 (80%).
b) On the amplifier, with LEVEL control at minimum, increase gradually until the LED CLIP starts to flash. Slowly return the LEVEL until the led goes out completely.

LACK OF BASS:

Cables of the speakers may be reversed and (out-of-phase speakers).

NOISE AND FAILURE IN SOUND:

Verify that the installation is not close to the original vehicle wiring as they may cause interference and noise in the audio signal.
Make a separate power connection to the sound system. Use a fuse/ circuit breaker as close to the battery as possible for protection.
Make a good grounding of the amplifier. To do this, remove the paint from the vehicle chassis at the desired point. Screw the wire using a ground terminal. To protect from oxidation, isolate 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.

Technical specifications

Minimum Output Impedance:	Stereo: 1 OHM / Bridge : 2 OHMS
Number of Channels:	2
Power Ouput @ 14.4V:	2 x 1600W RMS @ 1 Ohm

2 x 1200W RMS @ 2 Ohms
1 x 3380W RMS @ 2 Ohms (BRIDGE)
Power Ouput @ 12.6V:| 2 x 1375W RMS @ 1 Ohm
2 x 940W RMS @ 2 Ohms
1 x 2650W RMS @ 2 Ohms (BRIDGE)
Minimum Input Sensitivity:| 450mV ~ 8V
Signal to Noise/Ratio:| > 90dB
Frequency Response (-3dB)| 10Hz ~ 11KHz
Bass Boost:| 0dB ~ +20dB @ 45Hz
Input Impedance:| 15K Ohms
Supply Voltage:| 9V ~ 15.5V DC
Musical Consumption:| 150A (12.6V)
BASS Consumption:| 300A (12.6V)
Dimensions (H x W x L):| 3.05″ x 9.70″ x 12.77″
Weight:| 11.90 lb
| The measured data are based on equipment from the STETSOM laboratory (SMD Amplifier Dyno AD-1) with reference to tests at frequencies from 40Hz to 1KHz with THD + N ≤1% and impedances referring to that indicated in each measurement. The electronic components and the manufacturing process may vary in manufacturing, thus leading to a variation in the measurements made.
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Any updates made in this manual will be available for costormers to consult without any charge on the brand’s site.
It is recommended that the updated manual be consulted whenever needed.

Images contained in this manual are merely illustrative and may differ from the actual product.

Warranty Term

STETSOM, through its network of Authorized Technical Assistance Providers, guarantees technical assistance to the purchaser of their products. The repairs of any defects duly established as being of the manufacturer will be done without cost for replacement components or parts and repair labor. The repairs will be done by the Authorized Technical Assistance Provider specially designated by STETSOM.

CONSULT THE LIST OF AUTHORIZED TECHNICAL ASSISTANCE PROVIDERS ON
OUR WEBSITE: : www.stetsom.com.br/en/assistencias- tecnica
If you do not locate technical assistance in your city, please contact us at: BR +55 18 2104-9412

WARRANTY CONDITIONS:

Our warranty is 1 (one) year against manufacturing defects. Its validity starts on the date of the Sale to the FINAL Consumer.
To claim the benefits of this warranty, you must present one of the following documents: the Final Consumer’s SALE NOTE or this completed CERTIFICATE.

SITUATIONS THAT VOID THE WARRANTY:

1 year after the issuance of the invoice of sale to the consumer or 1 year after the certificate of warranty is filled out (dated and stamped by the retailer or installer) or 1 year from date of manufacture.
Violation of seals, alteration or removal of the product’s serial or lot number.
If the product suffers misuse or careless accidents involving: Water, Fire or Fall, or is installed in conditions contrary to the guidelines contained in the installation manual that accompanies the product.
Damages and changes in the circuit or adaptation of non-original parts.
If you use installation techniques contrary to those given in the manual.

QUESTIONS AND ADVICE:

STETSOM offers Customer Services to answer questions and give advice about their products and services. Please contact us through the channels: Phone: BR +55 18 2104-9412 / E-mail: suporte@stetsom.com.br Site: www.stetsom.com

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