Taramps PRO 2.4BT Digital Audio Processor

User Manual and Technical Guide

Introduction

Thank you for choosing a Taramps product. The PRO 2.4BT is a digital audio processor with Bluetooth connectivity, allowing full control of settings via smartphone or tablet through a dedicated app. The app provides an intuitive interface, enabling users to make real-time adjustments quickly and easily.

Featuring a high-performance 24-bit / 48KHz DSP, the PRO 2.4BT offers a wide range of precise settings and configurations. It includes crossover filters, time alignment, gain control, phase inversion, limiter, signal routing, as well as both graphic and parametric equalizers designed to optimize the performance of your audio system.

Please read this manual carefully before making any connections or using the product. If you have any questions, contact Taramps technical support at www.taramps.com.br.

In the Box

• 1 PRO 2.4BT processor
• 1 Power supply connector
• 1 Wire harness
• 1 Bluetooth antenna

Safety Requirements

Important Recommendations

To ensure proper use, please read this manual before using your processor. It is important that you are familiar with the PRECAUTIONS listed here.

• Installation of this equipment must be performed by a qualified professional.
• Use proper tools to install this equipment.
• This equipment must be used with 12V batteries. Always check the voltage before installation.
• The equipment must be installed in a firm place and away from heat sources.
• Never install it in places exposed to dust, humidity or water. Be sure to install it away from the fuel tank, fuel lines, heat sources or other parts of the vehicle.
• Be sure to install a protective fuse or circuit breaker near the battery. Follow the current recommended in this manual. Improper use of the fuse or circuit breaker can cause overheating, smoke, product damage, injury or burns.
• Avoid running cables over or through sharp edges. Use rubber or plastic grommets to protect cables that pass through the vehicle body.
• The automotive sound system can generate high sound pressure levels. Avoid continuous exposure to levels above 85dB to prevent permanent hearing loss.

Wiring Recommendations

A wiring gauge of 1.5 mm² is recommended for the positive/negative cables and 0.50 mm² for the remote cable. For protection, a 1A fuse should be installed near the positive pole of the battery. See more details on page 16 of this manual.

Power Connections:

• 1 - Negative power supply: Connect to the negative pole of the battery.
• 2 - Remote input: Connect to the remote output of the media receiver or multimedia receiver.
• 3 - Remote output: To activate the amplifier(s).
• 4 - Power Positive: Connect to the positive pole of the battery (12V).

Security

Throughout this manual, pay attention to safety symbols. The CAUTION symbol alerts users to important instructions. Ignoring these warnings may result in injury or damage to the product.

Taramps reserves the right to change the content of this manual without prior notice and without the obligation to apply these changes to previously manufactured units.

DSP Overview

The PRO 2.4BT offers several advanced features designed to optimize your audio system's performance. Below is an overview of the most important components and functions:

Front Panel Components:

• Audio signal inputs A and B: RCA inputs for audio sources.
• HIGH LEVEL IN / Automatic Remote: High-level input that enables automatic power-on when a signal is detected.
• BT ANTENNA: Connector for the Bluetooth antenna.
• INPUT CLIP Indicator LED: Signals when the input signal is too high and may cause distortion.
• Output clip and limiter indicator LEDs (OUT CLIP): Indicate output signal clipping or active limiter engagement for each channel.
• BT Connect LED: Indicates active Bluetooth pairing status.
• Selection / mute buttons: Buttons for selecting outputs or muting channels.
• Input gain controls: Adjust the input signal level for each input.
• Power connector: For connecting the main power supply.

Input Gain Control:

MAX: Accepts signals up to 2V RMS (standard sensitivity).

MIN: Accepts signals up to 9V RMS without distortion (low sensitivity).

Signal Inputs:

RCA Input: Accepts low-level, high-impedance signal (ideal for head unit RCA outputs).

High-level input: Accepts high-level, low-impedance signals. This input also enables Auto Turn-On: The DSP automatically powers on when a signal is detected. If auto turn-on doesn't work, connect the REMOTE IN wire manually.

Input Clip Indicator LED:

This LED signals that the input signal has reached the maximum level accepted by the processor, which can result in signal distortion. If it lights up, reduce the output level of the signal source and readjust the system's gain structure accordingly.

Limiter / Output Clip Indicator LEDs:

These LEDs serve a dual purpose: When the limiter is disabled, they indicate that the output signal has reached the maximum allowable level (clipping). When the limiter is enabled, they signal that the limiter is actively engaging--meaning the output signal has reached or exceeded the threshold set in the limiter parameters.

BT Connect LED:

Indicates active Bluetooth pairing.

Bluetooth Antenna:

For optimal performance, mount the antenna in an open area away from metal parts or electrical wires to prevent signal loss.

Getting Started

To start using your PRO 2.4BT, follow these steps:

1. Install the DSP following the wiring diagram provided on page 16.
2. Download the TARAMPS PRO app from the Google Play Store (Android) or App Store (iOS). Minimum requirements: Android 8.1 / iOS 16.
3. Power on the DSP. The "BT Connect" LED will begin flashing.
4. Open the TARAMPS PRO app. Select "Connect" to pair with the DSP via Bluetooth. Alternatively, select "Demo Mode" to explore the app without a connection. Grant Bluetooth permissions when prompted by the app.
5. Select the DSP from the list of available units. For easier identification: Move your phone closer to the desired processor; "Closest" will appear. Turn off other nearby units. Rename each unit in the app for clarity when using multiple units.
6. Once connected, the BT Connect LED will be continuously lit. Enter the default password: 1234. Change it in the Password / Lock menu for security (see page 15).

APP Main Screen Functions

The app interface provides comprehensive control:

• 1 - Connection Manager: Connect/disconnect DSPs (up to 4 units simultaneously).
• 2 - DSP Name: Tap to rename the DSP icon for easy identification.
• 3 - Active Connections: Displays the number of currently paired units.
• 4 - Input Clip Monitor: Indicates if the input signal is clipping.
• 5 - Limiter / Output Clip LEDs: Indicate limiter activation and output clipping for each channel.
• 6 - Master Volume Control: Adjusts the overall system output level.
• 7 - Output Gain and Mute: Tap to adjust gain for individual outputs; long press to mute.
• 8 - Screen Lock: Swipe right to prevent accidental changes.
• 9 - Main Menu Access: Swipe left to open advanced audio settings.

Note: The app is fully responsive and supports both portrait and landscape modes. Horizontal orientation is recommended for features like the Graphic EQ and Crossover for clearer visualization.

Main Menu Audio

The audio menu provides controls and settings for audio processing:

Input / Output Routing

Define how inputs A, B, or A+B are routed to outputs 1 to 4. Use the selector keys to assign signals to each output.

Input Graphic Equalizer

A 15-Band graphic EQ. Adjustments range from -12 to +12dB, in precise steps of 0.1dB. Adjust by selecting a band and dragging the knob, or by directly typing the parameter using [plus] and [minus] buttons. EQ PRESETS: You can also select an equalization preset from the list.

Input Parametric EQ

Allows precise adjustments of Frequency, Gain, and Q Factor. Drag the point on the graph to adjust Gain; other parameters are defined by typing the value or adjusting using the [plus] and [minus] buttons on the side.

Crossover

This section allows you to define the filters applied to each processor output channel, setting HPF (High Pass Filter) and LPF (Low Pass Filter) frequency cuts up to -48dB/Octave, using either Linkwitz-Riley (LR) or Butterworth (BT) types.

Controls:

• Output Channel: Select channels (1, 2, 3, 4) at the top of the app.
• Filter Adjustment: Set filter points by dragging circles on the graph (left circle = HPF, right circle = LPF), or use the [plus] and [minus] buttons.
• Filter Type: Select filter type (LR or BT) with attenuation slopes from -12dB/octave to -48dB/octave.
• Curve Visualization: Check curves from all channels by marking checkboxes.
• Limiter Status: Each output channel's limiter LED status is displayed below the graph.
• MUTE: Use MUTE buttons to disable output channels.

Delay Alignment

Synchronize audio signals from different speakers or audio sources so they reach the listener at the same time. This corrects time delays that occur when speaker voice coils are not positioned on the same physical plane, improving accurate sound reproduction.

Setting the Reference Voice Coil for Alignment:

1. Identify the reference voice coil [reference] (the one positioned furthest back from the speaker enclosure's front baffle). In the example, it's the center of the horn driver's coil.

2. Measure the distance (A) from this reference coil to each of the other drivers. Enter the closest matching value (in centimeters) for each output channel.

3. Repeat this process for all output channels using the corresponding buttons.

Phase Control

Invert output signal phase by selecting the 180° option. This corrects polarity issues between speakers.

Limiter

Acts as a limiter for the maximum signal level of the processor output, preventing damage to transducers. Parameters include Threshold (point when limiter acts), Attack time (time to reduce gain), and Release time (time to return to original gain). The limiter can be set to Auto or manual values. The limiter is active when the red LED on the output channel or the Limiter/Out Clip indicator in the app lights up.

Output Level

Adjust the Master (General) volume, as well as the volumes of the respective outputs, by dragging the point or using [plus] and [minus] buttons. Volume or gain adjustments take effect after touching the screen. Each output channel features a limiter/clip LED.

Output Parametric EQ

Allows precise adjustments of Frequency, Gain, and Q Factor for each output channel. Drag the point on the graph to adjust Gain; other parameters are set by typing the value or using the [plus] and [minus] buttons. Select the output channel via tabs or the DSP's 1~4 keys.

Audio Generator

Used for audio system adjustment and testing. Offers two modes:

• ON / OFF: Turns the signal generator on or off.
• Fixed Frequency Mode: Adjust amplitude using pinch gestures or the Gain (dB) field.
• Sweep Mode: Set starting and ending frequencies by dragging dashed lines. Adjust amplitude with a two-finger pinch gesture. Start the sweep by selecting speed (slow, mid, fast).

Save / Load Configurations

Store and manage your settings via the app. Save settings for later recovery or backup, and export/import presets. A sharing option is also available.

Storage:

• On the DSP: Up to 3 memories.
• On the Smartphone/Tablet: Up to 15 memories.

Swipe the memory name horizontally to reveal options: Load, Export, Rename, and Delete. For internal memory, only Load is available.

To save a new configuration, tap '+New'. Apply saved settings from your smartphone or tablet by choosing 'SMARTPHONE' and pressing the button.

Reset/Restore:

• Reset Audio Settings: Restores only audio adjustments to factory defaults, preserving other settings.
• Restore Factory Defaults: Completely resets the DSP to its original factory state, erasing all settings, saved memories, and passwords. This action is irreversible.

Factory Reset from DSP:

With the device powered off, press and hold keys 1 and 2 simultaneously. Hold until keys 3 and 4 start flashing alternately. Press key 4/FCN to confirm the reset, or key 3 to cancel. This procedure returns the device to its factory state and cannot be undone.

Password / Lock Settings

Default password: 1234. Change it in the Password / Lock menu. App access is also protected by the phone's native security (PIN, Face ID, etc.). If the password is forgotten, perform a factory reset and reload saved settings (settings must be stored on the smartphone previously).

About Section

Access firmware and app versions, open the User Manual, download the manual, visit the company website, view Privacy Policies, and get Support via WhatsApp.

Connection of DSP Inputs and Outputs

Wiring Diagram Description:

Connect the Head Unit's RCA output or Wire output to the DSP's RCA inputs (A and B) or High Level Input. Connect the Remote Cable from the Head Unit's remote output to the DSP's Remote Input. The DSP's Remote Output can be used to activate amplifiers. The main power supply connects to the battery's positive terminal via a 1.5mm² cable, protected by a 1A fuse near the battery. The negative power supply connects to the battery's negative terminal via a 1.5mm² cable. The Bluetooth antenna should be mounted in an open area. Connect output channels (1-4) to amplifiers using appropriate wiring (e.g., 1.5mm² for Taramps TS 400X4 Amplifier).

Warning: Observe correct polarity. Use a 1A fuse on the positive power supply line.

Technical Features

Processing:

• Resolution: 24 bits
• Sampling rate: 48 KHz

Inputs and Outputs:

• Number of input channels: 2
• Number of output channels: 4
• Input/output routing: A, B, A+B
• General gain adjustment: -80 to 0dB
• Output gain adjustment: -45 to +15dB
• Input impedance (RCA): 10K ohms
• Input impedance (high level): 50 ohms
• Output impedance: 47 ohms
• Maximum input level (RCA, Gain Min): 25Vpp (9V RMS)
• Maximum input level (RCA, Gain Max): 5.6Vpp (2V RMS)
• Maximum input level (High level): 28Vpp (10V RMS)
• Maximum output level: 5.9Vpp (2.1V RMS)
• Frequency response (-1dB): 10Hz a 22KHz
• Total Harmonic Distortion: 0.01%
• Signal / Noise Ratio: >90dB
• Crosstalk (separation between channels): >80dB

Input graphic equalizer: 15 bands, 2/3 octave, 12 presets. Frequencies: 25, 40, 63, 100, 160, 250, 400, 630, 1K, 1.6K, 2.5K, 4K, 6.3K, 10K, 16KHz. Attenuation / Gain: -12dB to +12dB.

Input Parametric EQ: Central frequency: variable from 10Hz to 22KHz. Attenuation / Gain: -12dB to +12dB. Q factor adjustment: 0.4 to 10.

Crossover (HPF e LPF): Cutoff frequency: variable from 10Hz to 22KHz. Linkwitz Riley Filters: -12, -18, -24, -30, -36, -42, -48dB/octave. Butterworth Filters: -12, -18, -24, -30, -36, -42, -48dB/octave.

Alignment (Delay): 8.0mS (272cm).

Phase: 0 / 180°.

Adjustable Limiter: Threshold: -24 to 0dB. Attack: 0.1mS to 100mS. Release: 1mS to 1600mS.

Output parametric EQ: Central Frequency: variable from 10Hz to 22KHz. Attenuation / Gain: -12dB to +12dB. Q Factor Adjustment: 0.4 to 10. MUTE Function: Individual at each output.

Audio generator (Sine waveform): Frequency range: Variable from 10Hz to 22KHz. Gain: -60 to 0dB. Modes: Fixed Frequency / 3 speed sweep.

Setting memory positions: Factory default + 3 assignable positions.

Access protection: 4 password digits (customizable).

Connectivity: 5.4 BLE (Low-Energy). Simultaneous connections: Up to 4 products. Typical range, with sight, without obstacles: 25m. APP compatibility: Android 8.1 / iOS 16 and above.

Supply Voltage: 10 to 16VDC.

Nominal consumption (12.6V): 0.20A.

Dimensions (WxHxD): 198 x 35 x 130mm (7.80" x 1.38" x 5.12").

Weight: 0.43Kg (0.95lb).

Note: The Bluetooth name and logo are owned by the Bluetooth SIG Inc. The Android name and logo are owned by Google LLC. The iOS name and logo are owned by Apple Inc. Typical range in line of sight, unobstructed, in an open environment. Actual product range depends on the installation environment and may be affected by obstacles such as metal surfaces, walls and other electronic equipment operating in the same place. The APP of the product may be updated from time to time. Taramps reserves the right to update, add, remove or enhance functionality without prior notice.

Warranty Statement

TARAMPS, located at 30, Julio Budisk Hwy, Alfredo Marcondes - SP, Brazil, ZIP 19180-120, warrants this product against design, manufacturing, and assembly defects, as well as any inherent design flaws that render it unsuitable for its intended use, for a period of 12 months from the date of purchase. In the event of a defect covered by this warranty, TARAMPS is responsible solely for the repair or replacement of the unit it has manufactured.

This warranty does not cover:

• Products damaged due to incorrect installation, water intrusion, or unauthorized handling;
• Broken or tampered warranty seal;
• Use under abnormal conditions;
• Defects caused by accessories, modifications, or equipment added to the product;
• Physical damage from drops, impacts, or acts of nature (e.g., floods, lightning);
• Incomplete or altered warranty card;
• Costs related to removal, reinstallation, or transportation of the equipment;
• Any damages or losses resulting from the product's malfunction or downtime.

Authorized Service Centers

For international support, visit: https://www.taramps.com.br/en/rede-de-assistencias-tecnicas/

You can also contact Taramps factory support directly:

• Email: service@taramps.com.br
• Phone: +55 18 3266-4050 / +55 18 99749-3391

Conformity Information

Declaration of Conformity

TARAMPS ELECTRONICS LTDA, Alfredo Marcondes - SP Brazil, hereby declares that the product PRO 2.4BT complies with Directive 2014/30/EU, according to the harmonized standard EN 50498:2010 (Electromagnetic compatibility - EMC).

The full text of the EU Declaration of Conformity is available at the Product Page on the Internet.

FCC ID: 2BQGR-PRO24BT, IC: 34161-PRO24BT

Agência Nacional de Telecomunicações approval: 03497-25-09573.

"This equipment is not entitled to protection against harmful interference and must not cause interference in duly authorized systems."

At the end of its useful life, this product should not be disposed of in household waste. Look for an electronic equipment collection or recycling center for correct disposal.

FCC Warning

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, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. If interference occurs, try to correct it by reorienting or relocating the receiving antenna, increasing separation between equipment and receiver, connecting equipment to a different outlet, or consulting a dealer or technician.

Note: The Grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance, as such modifications could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirements. To maintain compliance with FCC's RF exposure guidelines, the distance must be at least 20 cm between the radiator and your body, and fully supported by the operating and installation.

IC Warning

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada's licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device.

The device has been evaluated to meet general RF exposure requirements. To maintain compliance with RSS-102 -- Radio Frequency (RF) Exposure guidelines, this equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body.

Manufactured by: TARAMPS ELECTRONICS LTDA

TAX ID: 11.273.485/0001-03

Highway: Júlio Budisk, SN, KM 30, Alfredo Marcondes - SP

Made in Brazil