JL Audio
MAX™
Professional-Grade, 5-Microphone, Dual FFT Measurement System

$3,499.99
JL Audio MAX™
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Overview

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.

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.

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).

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.

What Else Will You Need?

  • A PC (Windows 10), or Mac (OS 11 Big Sur or newer)
  • JL Audio's free TüN® 4 software, available below
  • A mic stand or tripod to support the multi-mic holder.

Specifications

Power Supply
12 VDC nominal (10-15 VDC range)

Inputs

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
1≤ – 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 (Center 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

S/PDIF Digital Input (Optical)

Connector
TOSLINK
Sample Rates
8 kHz - 216 kHz
Bit Depths
8 - 24 bit PCM

Outputs

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

Microphones

Size, Type
1/4", pre-polarized electret (omnidirectional)
Flatness ± 1 dB
50 Hz to 10 kHz @ 44.1k SR, 48k SR, 96k SR
Flatness ± 2 dB
5 Hz to ≥ 20 kHz @ 44.1k SR, 48k SR, 96k SR
Maximum Input SPL
130 dB SPL @ 1 kHz with ≤ 2% THD
More Information
Brand JL Audio