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Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.
Class D Stereo Amplifier Module with DSP 2x50W
The Wondom Class D JAB3-50 amplifier module provides 2x50W of power. With its integrated DSP it is ready to be integrated into your DIY projects. The JAB3-50 delivers 2x50W of power while delivering high quality sound. The JAB amplifier series incorporates Parallel Bridge Tied Load (PBTL) technology in which two outputs can be connected together on one channel, resulting in higher power and efficiency.
The JAB1 and JAB2 offer a stereo solution for Bluetooth speakers. The JAB3s, in addition to offering a headphone amplifier, include a DSP. This means that when a JAB3 works with a JAB1/2, you get a complete 4.0 (BTL), 2.1 and 0.2 (PBTL) audio system with control interface and signal processing.
Thanks to an integrated serial debug port, you can reprogram the integrated DSP in your JAB3 amplifier in order to modify / add new functions. There are two ways to do so (one is really powerful while the other is quick and simple)
SigmaStudio is certainly the most complete and powerful solution for ADAU1701 DSP Chip programming (and the most technical as well). This solution lets you set up your JAB3 with many digital processing tools such as equalizers, crossovers (frequencies redirection) specific treatement for low frequencies, multiband dynamics...etc. SigmaStudio is a very powerful tool that can also set specific signal processing algorithms for each channel.
The SigmaStudio method uses a programmation module to flash the DSP internal memory (integrated to JAB3). Once it is done, the JAB module runs the DSP algorithms independent when powered (does not need the programmation module to stay plugged).
This solution is also suited for non-HIFI applications (sound acquisition / synth) that need to use both Σ-Δ ADC and the four integrated Σ-Δ ADC, while enjoying a dynamic range of 98.5dB. Each ADC has a THD+N of -83dB and each DAC has a THD+N of -90dB.
You will find on this page a guide to discover SigmaStudio and a walkthrough to connect the programming module as an interface between your JAB3 and your computer.
The app MIUMAX (available on Android) is by far the simplest solution and allow you to set up your JAB3's DSP in a few minutes. This method covers the functions of volume / gain / filters / delay / phase / 10-bands equalization, which is already impressive for a DSP integrated to an amplifier of this size / power.
MIUMAX uses the programming module ICP3 as a remote control which uses your smartphone (or any bluetooth device running on android or IOS) as an interface for DSP configuration. MIUMAX's configuration menu is really easy to understand for beginners.
It is also a very pratical tool for real-time test while being able to move and experience the whole listenning room.
| Specifications | |
|---|---|
| Product type | Amplifier with DSP module |
| Channel | Stereo (2) |
| Power | 2x50W |
| Integrated DSP | ADAU1707 |
| Signal detection | - |
| 2.1/0.1 Mode | - |
| PBTL Mode (Parallel Bridge-Tied Load) | |
| Integrated headphone amplifier | |
| Controls | Possibility to add a control module (sold separately) |
| Compatibility | JAB1 JAB2 |
| Outputs | Speaker terminal (PBTL) 1x Jack 3.5mm |
| Power supply | 19V (power supply possible with battery, sold separately) |
| Measurements | ||||
|---|---|---|---|---|
| Parameter | Conditions | Min. | Typ. | Max. |
| Number of channel | - | - | 2 | - |
| Minimum load impedance | - | 3.2Ω | 4Ω | - |
| Efficiency | 2x50W @ 4Ω, 1kHz | - | 84% | - |
| Required nominal power | @ 24V, 1kHz | - | 130W | - |
| Operating voltage | @1kHz, 4Ω | 12V | 24V | 26V |
| Switching frequency | SD Floating @ 24V | - | 400kHz | - |
| Consumption | 1/4 of max output power @ 4Ω, 24V, 1kHz | - | 35W | - |
| 1/8 of max output power @ 4Ω, 24V, 1kHz | - | 20W | - | |
| Under voltage protection | - | 10V | 10.4V | 10.8V |
| Amplifier gain | @ 4Ω, 20Hz - 20kHz | - | 26dB | - |
| DSP gain | SE1 (Single Amp) @ 4Ω, 1kHz | -60dB | - | 0dB |
| SE2 (Headphone) @ 4Ω, 1kHz | -60dB | - | 6.5dB | |
| Input sensitivity | 2x50W @ 4Ω, 1kHz, 26dB | - | 770mV | - |
| Filter gain | Butterworth, Q=0.707 | - | 4dB | - |
| Cutoff frequency | HFP | 0.25kHz | - | 2kHz |
| LFP | - | 20kHz | - | |
| SNR | 2x50W @ 4Ω, THD+N = 1%, 26dB, A-Weighting | - | 88db | - |
| THD+N | 5W @ 4Ω, 1kHz, 24dB | - | 0.04% | - |
| 10W @ 4Ω, 1kHz, 24dB | - | 0.06% | - | |
| Input impedance | - | - | 10kΩ | - |
| Supported sampling rate | - | - | 48kHz | - |
| Output noise level | A-Weighting, input connected to GND, 26dB | - | 260uV | - |
| Crosstalk separation | 20Hz - 20kHz, Gain = 26dB | - | -60dB | - |
| DC Offset | - | - | 10mV | - |
| Max output level | J3, Jack 3.5mm headphone output | - | 7.8dBu | - |
| General | |
|---|---|
| Dimensions | 91 x 69 x 19mm |
| Package | 1x Wondom JAB3-50 module 1x Molex/JST XHP 4 pins power cable (for AA-JA11113 module) 1x Extension cable (for AA-JA11112 module) 1x Speaker cable |
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