Philips MPA-2500 Multizone PA Mix Power Amplifier User Manual

Philips MPA-2500 Multizone PA Mix Power Amplifier

Technical Specifications

• Models: MPA-2250, MPA-2500
• AC Power Supply: 110-120V~,220-240V~ 50Hz/60Hz
• Maximum Power Consumption: 600W (MPA-2250), 1000W (MPA-2500)
• Rated Output Power: 250W x 2 (MPA-2250), 500W x 2 (MPA-2500)
• Sensitivity/Impedances: -40dBv to -5dBv
• Maximum Input Level: -20dBv to +15dBv
• S/N Ratio Bandwidth: >65dB
• Tone Control: BASS @ 100 Hz, TREBLE @ 10kHz

Product Usage Instructions

Powering On/Off the Amplifier
To power on the amplifier, switch the POWER button to the ON position. To power it off, switch it to the OFF position.

Adjusting Volume
Use the VOL knobs for ZONE1 and ZONE2 to adjust the volume levels independently for each zone.

Input Selection
Choose the desired input source by selecting INPUT1, INPUT2, INPUT3, or INPUT4 using the corresponding buttons.

Adjusting Tone Controls
Use the TREBLE and BASS knobs to adjust the high and low frequencies for each zone.

Zones Selection
Select between OUTDOOR and INDOOR for ZONE1 and ZONE2 using the designated buttons.

MP3/Bluetooth Playback
To play MP3 files or connect via Bluetooth, use the MENU, PLAY/PAUSE, FILE, REPEAT, BACK, and NEXT buttons as needed.

TECHNICAL SPECIFICATIONS

Sensitivity/Impedances

| MIC (balanced)| -40dBv| -40dBv
LINE (balanced)| -5dBv| -5dBv

Maximum Input Level

| MIC (balanced input to pre out)| -20dBv| -20dBv
LINE (balanced input to pre out)| +15dBv| +15dBv

S/N ratio

| MIC (20-20000Hz)| >65dB| >65dB
LINE (20-20000Hz)| >75dB| >75dB

Bandwidth

| MIC @ 1/8 RMS| 100Hz-15KHz| 100Hz-15KHz
LINE @ 1/8 RMS| 80Hz-18KHz| 80Hz-18KHz
THD+N| 1W/RMS|  1%|  1%

Tone control

| BASS @ 100 Hz| 10dB| 10dB
TREBLE @ 10kHz| 10dB| 10dB
Phantom supply| MIC (balanced)| 18V| 18V
Priority Sensitivity| MIC1| -60dBv/3S| -60dBv/3S
CMRR| balance input| >60dB| >60dB
Crosstalk| 500-2000Hz| <-60dB| <-60dB
Noise| all VR MAX| <30mv| <30mv
phase| all of the inputs and outputs| < 5| < 5

IMPORTANT: Please read this manual carefully before operating this unit for the first time.

SAFETY RELATED SYMBOLS

• The symbol is used to indicate that some hazardous live terminals are involved within this apparatus, even under normal operating conditions.
• The symbol is used in the service documentation to indicate that specific component shall be only replaced by the component specified in that Documentation for safety reasons.
• Protective grounding terminal.
• Alternating current /voltage
• Hazardous live terminal.
• ON: Denotes the apparatus turns on.
• OFF: Denotes the apparatus turns off, because of using the single pole switch, be sure to unplug the AC power to prevent any electric shock before you proceed with your service.

WARNING : Describes precautions that should be observed to prevent the danger of injury or death to the user.
Disposing of this product should not be placed in municipal waste and should be a separate collection.
CAUTION : Describes precautions that should be observed to prevent danger to the apparatus.

WARNING

• Power Supply: Ensure the source voltage matches the voltage of the power supply before turning ON the apparatus.
  • Unplug this apparatus during lightning storms or when unused for long periods.
• External Connection
  • The external wiring connected to the output hazardous live terminals requires installation by an instructed person, or the use of ready-made leads or cords.
• Do not remove any Cover
  • There are maybe some areas with high voltages inside, to reduce the risk of electric shock, do not remove any cover if the power supply is connected.
  • The cover should be removed by the qualified personnel only.
  • No user-serviceable parts inside.
• Fuse
  • To prevent a fire, make sure to use fuses with specified standards (current, voltage, type). Do not use a different fuse or short-circuit the fuse holder.
  • Before replacing the fuse, turn OFF the apparatus and disconnect the power source.
• Protective Grounding
  • Make sure to connect the protective grounding to prevent any electric shock before turning ON the apparatus.
  • Never cut off the internal or external protective grounding wire or disconnect the wiring of the protective grounding terminal.
• Operating Conditions
  • This apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on this apparatus.

CONNECTION DESCRIPTION

BLOCK DIAGRAM

To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
Do not use this apparatus near water. Install by the manufacturer’s instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not block any ventilation openings.
No naked flame sources, such as lighted candles, should be placed on the apparatus.

IMPORTANT SAFETY INSTRUCTIONS

• Read these instructions.
• Follow all instructions.
• Keep these instructions.
• Heed all warnings.
• Only use attachments/accessories specified by the manufacturer.

Power Cord and Plug

• Do not defeat the safety purpose of the polarized or grounding-type plug.
• A polarized plug has two blades one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replace-ment of the obsolete outlet.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

Cleaning

• When the apparatus needs cleaning, you can blow off dust from the apparatus with a blower or clean it with a rag etc.
• Don’t use solvents such as benzol, alcohol, or other fluids with very strong volatility and flammability for cleaning the apparatus body. Clean only with a dry cloth.
• Servicing Refer all servicing to qualified personnel. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so .
  Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

The mains plug is used as the disconnect device, the disconnect device shall remain readily operable.

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions:

1. this device may not cause harmful interference,
2. this device must accept any interference received, including interference that may cause undesired operation.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, under part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used under the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.”

INTRODUCTION

Function introduction:
2 Zons2 Zons Class D Class D P P.A. .A. AMP seriesAMP series

• The class D professional public address amplifier series is designed for small hotels, supermarkets and schools.
• They have good performance and supply excellent quality of sound. Besides, users can operate easily.
• The class D professional public address amplifier series has 5 inputs and 2 outputs The series includes the following models: MA-2250 (250W2)/MA-2500 (500W2).

The main functions are as follows :

Ahead panel:

• Input1-Input4 volume control
• Input1-Input4 Bass and Treble control
• Input1-Input2 Echo function selection
• USB, Bluetooth, and zone1 or zone2 selection. Zone 1 and Zone 2 have a master volume control. One power switch

Rear panel:

• 4 channel MIC or line input.
• 4 channel MIC/line/phantom selection switch. Zone1 and Zone2 output.
• Output can choose 4ohm/70V/100V
• AC Power supply input.
• Cooling fan.

CONTROL ELEMENTS

• 1W8Ohm monitor
  Use this terminal to connect small external speakers, which will be powered by an auxiliary power amplifier, offering a 1W nominal output.

• Priority terminal
  When these terminals are in short circuits (e.g. Using an electrical switch), the audio signals from channels 2-5 are attenuated.

• TEL paging input
  Use these terminals to connect an auxiliary signal. The input features of the Voice Priority function, which overrides all other input signals once, an auxiliary message is sent.

• FAN
  • It is used to blow off heat and cool when the temperature rises during operation.
• GND
  • It is the ground connection.
• AC JACK
  • This connector is meant for connection of the supplied main cord.
  • Do not insert the power cord into this unit until the voltage has been correctly set.
• Monitor line out
  • This terminal allows you to connect another device, such as an amplifier, recorder, etc.
• INPUT1-4
  • They are used for both balanced and unbalanced inputs.
• MIC/PHANTOM/LINE SELECT SWITCH
  • This knob is used to adjust the ZONE1 gain of the unit.

OUTPUT TERMINALS

Connection for low impedance 4Ω speaker ; connections for constant voltage,70V or 100V speakers.
Take the below model with MP3 player + ECHO for example.

FRONT PANEL

• MP3 MODULE
  • Regarding its function and operation, please see the BGM module description in detail.
  • Note: MP3 player, recording, CD-201are assembled to different units of the series.
• TREBLE(INPUT1-4)
  • Use the knob to control the high frequency at the range of 10 dB. Turn clockwise to boost and counterclockwise to attenuate the treble response. The tone is flat at the centre.
• BASS(INPUT1-4)
  • Use the knob to control the low frequency at the range of 10 dB. Turn clockwise to boost and counterclockwise to attenuate the treble response. The tone is flat at the centre.
• INPUT 1-4VOL Knobs
  • The knobs are used to adjust the gain of input 1-4 respectively. Adjust clockwise to increase the volume while adjusting counter-clockwise to decrease the volume.
• MP3 VOL Knobs
  • The knobs are used to adjust the gain of MP3. Adjust clockwise to increase the volume while adjusting counterclockwise to decrease the volume.
• ZONE1 VOL Knobs
  • This knob is used to adjust the ZONE1 gain of the unit.
• ZONE2 VOL Knobs
  • This knob is used to adjust the ZONE2 gain of the unit.

Frequency response selection switch

LINE

| OUTDOOR| 170Hz~13KHz
INDOOR| 90Hz~13KHz

POWER SWITCH
The main power can be switched on or off with it.

ECHO FUNCTION
It is used to control ECHO, When not using the ECHO function, please turn the ECHO volume level to the minimum to avoid noise

TEL VOLUME
Allows you to set the audio signal output volume from the phone line. When you don’t use the phone line, we recommend using the volume level to 0.

MP3 Operation Instructions
The Functions Description of USB PLAYER

Inputs Ports
USB: USB port Control Keys

| ACTION| USB| BLUETOOTH
---|---|---|---
MENU| Short press| USB| ON
Long press| OFF| OFF
PLAY/PAUSE| Short press| Play/Pause| Play/Pause
FILE| Short press| Browsing file| **
REPEAT| Short press| Repeat file(6 modes)| **
BACK| Short press| Previous file| Previous file
Long press| Volume down| Volume down
NEXT| Short press| Next file| Next file
Long press| Volume up| Volume up

Bluetooth Connection
When using a Bluetooth connection between the amplifier and other devices like smartphones, search the RTL-29 matching name and validate the connection.

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Frequently Asked Questions

• Q: How do I connect my device via Bluetooth?
  • A: To connect your device via Bluetooth, ensure the amplifier is in Bluetooth mode, then search for available devices on your device’s Bluetooth settings and select the amplifier to pair.
• Q: Can I use both ZONE1 and ZONE2 simultaneously with different inputs?
  • A: Yes, you can use ZONE1 and ZONE2 simultaneously with different input sources by selecting the desired input for each zone using the INPUT buttons.

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