JL Audio MAX™ Kit

JL Audio bring the next level of system measurement with the JLMAX-KIT, a dealer focused 5 microphone arrangement allowing for increased accuracy and automation.

MAX Audio Measurement System

MAX™ is a professional-grade, dual FFT measurement system with five microphones. It is ideal for general audio system measurements, system tuning with DSP, troubleshooting and testing equipment, and solving OEM integration challenges. MAX™ has many applications in home audio, car audio, marine audio and professional audio.

With full integration of VXi and MVi DSP controls, MAX™ simplifies your measurement setup, allowing you to perform measurements and DSP adjustments with one computer and one software application: TüN™ 4.0, which offers micro-automations that speed up equalization and channel delay setting.

What can you do with MAX™?

  • + Test, troubleshoot and analyze any audio system with full detail on the three dimensions of audio: level, frequency and time… all in real time!
  • + Streamline the tuning of car audio DSP products in real-world shop environments. Simply connect the hardware, place the microphone array, launch TüN™ software and go!
  • + Quickly test room modes for home audio and home theater subwoofer placements, and accurately adjust crossover and phase controls for a seamless transition to the subwoofer.
  • + Evaluate individual or multiple audio zones in a marine installation for frequency response and level.
  • + Get the best measurements possible with 5-microphone averaging! MAX™ multiplexes up to five included microphones to conduct single FFT measurements of level and frequency response (RTA and spectrograph).
  • + Conduct Dual FFT measurements of up to five simultaneous transfer functions with precise displays of magnitude (frequency response), phase, impulse response (delay) and coherence (noise immunity).
  • + Each transfer function captures all the audio data for real-time or comparative analysis.
  • + Built-in Test Signal Generator (pink and white noise, sine waves, square waves, etc.), plus WAV file playback capability.
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MAX is Incredibly Flexible and Accurate!

  • + MAX™ measurement accuracy is on par with professional test equipment that sells for tens of thousands of dollars.
  • + Wide Range of Inputs (up to five microphones, high-level analog signals up to 80V, low-level analog signals up to 7V, optical digital S/PDIF signals).
  • + Multiple Signal Outputs (built-in DAC feeding analog line level outputs and headphone outputs, plus optical digital output).
  • + A built-in USB Hub simplifies connection to computer and DSP amplifiers, or other USB devices (not intended for charging devices).
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Powerful Automations with VXi and MVi amplifiers:

  • + Automatic True Delay feature sets VXi/MVi channel delays in a flash, far more accurately than any other method.
  • + Autoset EQ feature sets the VXi/MVi parametric EQ’s to your selected target, in seconds. You can also overlay VXi/MVi equalizer controls over the frequency response display to perform precise, manual EQ adjustments with real time visual feedback.

What is in the Kit?

  • + The MAX-KIT includes the MAX™ hardware interface, five measurement microphones, a multi-mic fixture, mounting accessories, cables and power supplies, all packed in a locking, waterproof hard case.
  • + An optional, specialized probe kit for speaker impedance and high-voltage electrical measurements is available separately: “MAX-PROBE KIT” (90922).

What else will you need:

A PC (Windows 10), or Mac (OS X Catalina or newer), our free TüN 4 software (link at the bottom of this page), and a mic stand or tripod to support the multi-mic holder.

Specifications

Power Supply

12 VDC nominal (10-15 VDC range)

High-Level Inputs 1 & 2

Pin Configuration

XLR (Pin 1 - GND, Pin 2 - Signal+, Pin 3 Signal-)

Input Impedance

73 kΩ

Flatness ± 0.1 dB

5 Hz - 15 kHz @ 44.1 kSR, 48 kSR, 96 kSR

Flatness ± 0.5 dB

5 Hz - 20 kHz @ 44.1 kSR
5 Hz - 22 kHz @ 48 kSR
5 Hz - 35 kHz @ 96 kSR

Crosstalk, 5 Hz - 20 kHz

≤ -95 dB

Crosstalk @ 1 kHz

≤ -110 dB

THD @ 1 kHz

≤ 0.0012%

THD+N, 5 Hz - 20 kHz

≤ 0.035%

ADC Headroom

-4.84 dBFS @ 80 VAC peak (56.57 Vrms sine)

Maximum DC offset level

50 VDC, Pin 2 or 3 to GND, Pin 1 - DC

Unbalanced Mic Inputs (1,2,3,4,5)

Pin Configuration

Mini-XLR (Pin 1 - GND, Pin 2 - Signal +, Pin 3 - 2 VDC)

Input Impedance

2.2 kΩ

Flatness ± 0.05 dB

10 Hz - 10 kHz @ 44.1 kSR, 48 kSR, 96 kSR

Crosstalk, 5 Hz - 20 kHz

≤ -115 dB

Crosstalk @ 1 kHz

≤ -120 dB

THD @ 1 kHz

≤ 0.0009%

THD+N, 5 Hz - 20 kHz

≤ 0.01%

ADC headroom

-39.5 dBFS @ 94 dB SPL

RCA Balanced (Reference Input)

Pin Configuration

RCA Female (Centre Pin - Signal +, Shell - Signal -)

Input Impedance

∼ 100 kΩ

Flatness ± 0.1 dB

5 Hz - 15 kHz @ 44.1 kSR, 48 kSR, 96 kSR

Flatness ± 0.5 dB

5 Hz - 20 kHz @ 44.1 kSR
5 Hz - 22 kHz @ 48 kSR
5 Hz - 35 kHz @ 96 kSR

THD @ 1 kHz

≤ 0.005%

THD+N, 5 Hz - 20 kHz

≤ 0.035%

S/PDIF Digital Input (Optical)

Connector

TOSLINK

Sample Rates

8 kHz - 216 kHz

Bit Depths

8 - 24 bit PCM

DAC Output

Connectors

Unbalanced RCA

Output Impedance

200 Ω

Output Level at 0 dBFS

4 Vrms

Flatness ± 0.1 dB

5 Hz - 10 kHz @44.1 kSR, 48 kSR, 96 kSR

Flatness ± 1 dB

5 Hz - 20 kHz @ 44.1 kSR
5 Hz - 22 kHz @ 48 kSR
5 Hz - 35 kHz @ 96 kSR

Crosstalk, 5 Hz - 20 kHz

≤ -95 dB

Crosstalk @ 1 kHz

≤ -110 dB

THD @ 1 kHz

∼ 0.0014%

THD+N, 5 Hz - 20 kHz

≤ 0.032%

S/PDIF Digital Output (Optical)

Connector

TOSLINK

Sample Rates

44.1 kHz - 96 kHz

Bit Depth

24 bit PCM

Output Level

Defined by Signal Generator level control

Size, Type

1/4", pre-polarized electet (omnidirectional)

Flatness ± 1 dB

50 Hz to 10 kHz @ 44.1 kSR, 48 kSR, 96 kSR

Flatness ± 2 dB

5 Hz to ≥ 20 kHz @ 44.1 kSR, 48 kSR, 96 kSR

Maximum Input SPL

130 dB SPL @ 1 kHz with ≤ 2% THD

JL Audio’s free TüN software is used to adjust DSP features in a wide range of JL Audio’s products. Its unique and intuitive interface makes it easy to set up complex systems and adjust parameters in a logical progression. These include input levels, signal routing, crossover filters, equalization, channel delays, all-pass filters, polarity and output levels. Complex settings can be saved as presets for quick recall via a Digital Remote Controller accessory.

The fourth and newest version of TüN™ adds a powerful new dimension that promises to further simplify and improve system tuning, leading to great audio results in a wide range of applications.

For more information on the TüN™ software and to download a copy direct from JL Audio please click here.