The Pure Resonance Audio RMA500BT is a highly efficient and lightweight mixer amplifier designed for MP3, tuner, and Bluetooth audio sources. It features a high-performance switching power supply and a Class H power amplifier chip combination, all housed in a slim 1U chassis design.
Key Features:
- MP3 Decoding Module: Supports USB, TF, and Bluetooth for FM playback. It includes remote control, support for power-off memory, and an MP3 recording function.
- Channel Support: Features 1 channel EMC input, 2 AUX inputs, and 4 MIC inputs.
- Audio Control: Each channel has volume control, master volume controls, and bass/treble tone control.
- Protection Features: Includes level indicator, overload, and protection indicator for short circuit, overload, and overheating protection.
- Priority Muting: MIC1, MIC2, MIC3, MIC4, AUX1, AUX2, and MP3 inputs have priority muting.
- Advanced Power Amplifier Circuit: Utilizes a 100V or 4 ohms output, with a rated output power of 500W. The AC power supply provides 650W.
- Cooling System: Forced air-cooling fan on the front to back, starting up in uniform speed rotation, and then speeding up when the temperature increases to maintain long working hours.
- DC Power Interface: Includes a 24V DC power interface for 24V backup or optional use.
- Design: Features a 1U chassis design, high efficiency, lightweight, and beautiful appearance.
Technical Specifications:
- Rated Power: 500W
- Output Level: 4-16Ω/70V
- Input Sensitivity:
- MIC: 5mV±1mV
- LINE: 350mV±20mV
- AUX: 350mV±20mV
- EMC: 775mV±40mV
- Output Sensitivity & Impedance:
- MIX OUT: 1000mV/470Ω
- Unbalanced RCA connection terminal
- Tones:
- Low frequency: ±10dB at 100Hz
- High frequency: ±10dB at 10KHz
- Frequency Response: 80Hz~16KHz +/- 3dB
- SNR:
- MIC1,2,3,4: 66dB
- AUX1,2: 85dB
- THD: ≤0.05% (at 1KHz, 1/3 rated power)
- Indicator: Power indicator
- Cooling Mode: Forced fan with variable speed cooling with side entry airflow
- Protection Modes: Over-heat, overload, short circuit
- Operation Temperature: +5°C~+40°C
- Storage Temperature: -20°C~+70°C
- Relative Humidity: <95% (No condensation)
- Voltage: 110-120V 60HZ
- Power Consumption: 650W
- Dimensions (H x W x D): 1.73" (44 mm) x 19.05" (484 mm) x 12.4" (315 mm)
- Weight: 9.48 lbs (4.3 kg)
- Shipping Weight: 14 lbs (6.35 kg)
Usage Features:
Front Panel Controls:
- Recording function button
- MP3 loop playback function button
- Play/Pause
- Next song/Volume reduce
- USB interface
- MIC1 unbalanced input jack
- MIC1 volume control knob
- MIC2 volume control knob
- MIC3 volume control knob
- MIC4 / AUX1 volume control knob
- AUX2 volume control knob
- BASS adjustment potentiometer
- TREBLE adjustment potentiometer
- Master volume control
- PROT/70V/4-16Ω/CLIP/SIG status indicators
- The power switch
- The power indicator
- TF card slot
- Previous song/Volume up
- LCD display
- Mode function button
Rear Panel Connections:
- AC power input socket
- 70V/4-16Ω output interface
- 70V/4-16Ω speaker output switch
- Cooling fan
- Line output interface, used to connect the line input interface
- 2 channel AUX input interface, used to connect AUX output interface
- Line input /Mic input /Phantom power switch for MIC4
- MIC4/AUX1 Balance input
- Line input /Mic input /Phantom power switch for MIC3
- MIC3 Balance input
- Line input /Mic input /Phantom power switch for MIC2
- MIC2 Balance input
- MUTE control switch
- Line input /Mic input /Phantom power switch for MIC1
- EMC input interface
- MUTE signal input port
- FM radio antenna interface
- MIC1 Balance input
Remote Control:
- Power switch
- Mode
- Previous/next
- Volume increase/decrease
- 0-9 number buttons
- Play/pause
- Sound effect control
- Mute
- Cycle play button
- Pause
MP3 Player Operation:
- MODE button: Press to choose FM radio, USB, Bluetooth, or audio playback. (Press and hold to forcibly turn on/off the amplifier)
- Previous song: (Press and hold to increase the volume)
- MP3 loop playback button: (with Repeat One / Repeat ALL / Random / Repeat Folder mode)
- Play / Pause: (Press and hold in FM mode to receive the station)
- Recording button: (press in PLAYING mode to record) (Press and hold to switch between recording and USB playback)
- Next song: (long press to decrease volume)
USB Operation:
Press the MODE button to select the USB mode, copy MP3 files to the U disk (below 32G), it supports MP3 / WAV / WMA / AEC / FLAC format.
TF Card Operation:
Insert a TF card (below 32G) to copy MP3 files, it supports MP3 / WAV / WMA / AEC / FLAC format.
FM (Radio Reception) Function:
Press the MODE button to select the FM mode, and then press and hold the PLAY / PAUSE button to automatically receive the radio station. The radio stations received (depending on the sound received) depends on the venue.
MP3 Song Loop Playback:
In USB or TF card mode, play a song at will, press the mode button to switch between Repeat One / Repeat ALL / Random / Repeat Folder.
Functional Memory Operation:
Turn off the amplifier by the remote controller or press and hold the MODE button. After it is turned on, it can remember the function mode selected before. If you unplug the power cable and turn it on again, the default is Bluetooth mode.
Volume +/- Operation:
Long press the Previous Song button to increase the volume quickly, and long press the Next Song button to decrease the volume quickly.
Bluetooth Operation:
- Press the Mode button on the remote to ensure media player is in Bluetooth mode, indicated by letters "BT".
- Go to your device's settings and find then select device "BP10_BT". No password should be required.
- Device should pair within a minute or so.
- If pairing is unsuccessful, power down your amplifier, close the settings app on your device.
- Power up amplifier & reopen settings. Repeat first steps to attempt to pair again. If you still have an issue pairing, please reboot personal device & cycle amplifier power.
- Once pairing is successful, open music app. Ensure device volume is turned up to at least 75% capacity on the device.
- Adjust volume of audio player with volume buttons on infrared remote (OK to set at max volume - 32)
- Adjust master volume to desired level, ensuring amplifier does not show clip or show any red lights.
Operation Instruction for MIC1/ MIC2/ MIC3/ MIC4 Input Switch:
The input switch includes: line input, Mic input, and Phantom power supply
- When switching to Line input, you can input the source, such as CD, VCD, DVD and some other external audio equipment.
- When switching to the MIC input, you can use the dynamic microphone.
- When switching to PHANTOM, the input interface with 48V phantom power supply, you can use the condenser microphone.
Maintenance Features:
Safety Precautions:
- Always read the instructions in the manual carefully before use.
- Observe all safety symbols and messages.
- Keep the instruction manual handy for future reference.
When Installing the Unit:
- Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as doing so may result in fire or electric shock.
- Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified may result in fire or electric shock.
- Do not cut, kink, otherwise damage or modify the power supply cord. In addition, avoid using the power cord in close proximity to heaters, and never place heavy objects – including the unit itself – on the power cord, as doing so may result in fire or electric shock.
- Be sure to replace the unit’s terminal cover after connection completion. Because high voltage is applied to the speaker terminals, never touch these terminals to avoid electric shock.
- Be sure to ground to the safety ground (earth) terminal to avoid electric shock. Never ground to a gas pipe as a catastrophic disaster may result.
- Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface. Doing so may result in the unit falling down, causing personal injury and/or property damage.
- Never plug in or remove the power supply plug with wet hands, as doing so may cause electric shock.
- When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord itself. Operating the unit with a damaged power supply cord may cause a fire or electric shock.
- When moving the unit, be sure to remove its power supply cord from the wall outlet. Moving the unit with the power cord connected to the outlet may cause damage to the power cord, resulting in fire or electric shock. When removing the power cord, be sure to hold its plug to pull.
- Do not block the ventilation slots in the unit’s cover. Doing so may cause heat to build up inside the unit and result in fire.
- Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock.
- Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they accidentally spill into the unit, this may cause a fire or electric shock.
- Do not insert or drop metallic objects or flammable materials in the ventilation slots of the unit’s cover, as this may result in fire or electric shock.
- An all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the electrical installation of the building.
- Keep all sides of the unit over 4" away from objects that may obstruct air flow to prevent the unit's internal temperature rise.
When the Unit is in Use:
- Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest dealer. Make no further attempt to operate the unit in this condition as this may cause fire or electric shock.
- If you detect smoke or a strange smell coming from the unit
- If water or any metallic object gets into the unit
- If the unit falls, or the unit case breaks
- If the power supply cord is damaged (exposure of the core, disconnection, etc.)
- If it is malfunctioning (no tone sounds)
- To prevent a fire or electric shock, never open or remove the unit case as there are high voltage components inside the unit. Refer all servicing to your nearest dealer.
- Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury and/or property damage. In addition, the object itself may fall off and cause injury and/or damage.
- Make sure that the volume control is set to minimum position before power is switched on. Loud noise produced at high volume when power is switched on can impair hearing.
- Do not operate the unit for an extended period of time with the sound distorting. This is an indication of a malfunction, which in turn can cause heat to generate and result in a fire.
- Contact your dealer as to the cleaning. If dust is allowed to accumulate in the unit over a long period of time, a fire or damage to the unit may result.
- If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result. Clean it periodically. In addition, insert the plug in the wall outlet securely.
- Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when cleaning or leaving the unit unused for 10 days or more. Doing otherwise may cause a fire or electric shock.
Troubleshooting:
The manual provides a troubleshooting guide to help identify and resolve common issues such as power switch not opening, no sound, sound disappearing, low sound, and distorted sound. This section helps users determine if a problem is due to operator error or a device malfunction, guiding them to contact support if necessary.
Limited Warranty:
PRO ACOUSTICS, LLC. ("PRO ACOUSTICS") warrants this product to the original purchaser to be free from defects in materials and workmanship for specific periods from the date of purchase:
- Speakers: 2 Years
- Amplifiers & Electronics: 1 Year
- Microphones: 1 Year
- Accessories: 1 Year
PRO ACOUSTICS will repair or replace (at PRO ACOUSTICS's option) this product or any defective parts (excluding electronics and amplifiers) in this product. The warranty is void if the serial number is altered or removed, if the product was not purchased from an authorized dealer, or if damage is due to accident, acts of God, misuse, abuse, negligence, commercial use, modification, improper operation, maintenance, installation, or unauthorized repair.
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