Descriptions

About: JL Audio MAX-KIT Audio Measurement System 

TUNE, TEST, TROUBLESHOOT AND ANALYZE ANY AUDIO SYSTEM

MAX is a professional-grade, dual fast Fourier transform (FFT) measurement system with 5 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, car, marine and professional audio.

• STREAMLINES TUNING OF AUDIO DSP PRODUCTS IN REAL-WORLD CONDITIONS
• 5-MICROPHONE AVERAGING GIVES YOU HELPFUL REAL-WORLD MEASUREMENTS
• ACCURACY IS ON PAR WITH PROFESSIONAL TEST SYSTEMS COSTING MUCH MORE
• PRECISELY ANALYZE THE 3 PILLARS OF AUDIO: LEVEL, FREQUENCY AND TIME
• TOGETHER, MAX AND TüN® 4 SOFTWARE CAN ANALYZE ANY AUDIO SYSTEM WITH FULL DETAIL, ALL IN REAL TIME
• BUILT-IN USB HUB SIMPLIFIES CONNECTION TO COMPUTER AND DSP AMPLIFIERS

DUAL FFT ANALYSIS

Conduct dual FFT measurements of up to 5 simultaneous transfer functions with precise displays of magnitude (frequency response), phase, impulse response (delay) and coherence (noise immunity).

5-MICROPHONE ARRAY

Up to 5 included microphones can be multiplexed to conduct single FFT measurements of level and frequency response (real-time audio (RTA) and spectrograph).

WIDE RANGE OF INPUTS

Put it all together with the inputs you need — including up to 5 microphones plus high-level analog signals (up to 80 volts), low-level analog signals (up to 7 volts) and optical digital signals (S/PDIF).

MULTIPLE SIGNAL OUTPUTS

Built-in digital-to-analog conversion feeds analog line level outputs and headphone outputs plus optical digital output (S/PDIF).

SIMPLE VXi/MVi AMP SETUP

For VXi and MVi amplifier users, the MAX audio measurement system offers full integration of amp DSP controls to streamline setup of measurements with one computer and one software application: TüN 4.

IT FITS IN A KIT

All hardware, mounting accessories and cables fit in a lockable, water-resistant hard case. An optional probe kit for impedance and electrical measurement is sold separately.

TECH HIGHLIGHTS:

• AUTOMATIC TRUE DELAY: Set VXi/MVi channel delays in a flash — far more accurately than any other method.
• AUTOSET EQUALIZATION (EQ): To simplify EQ, this feature sets VXi/MVi parametric EQs to your selected target in seconds.
• EASY MANUAL EQs: Perform precise manual EQ adjustments with real-time visual feedback.
• BUILT-IN SIGNAL TEST GENERATOR: MAX provides an input signal for testing — plus WAV file playback capability.
• HOME AUDIO/THEATER: Test room modes for subwoofer placements, and adjust crossover and phase controls.
• CAR AUDIO APPLICATIONS: Mic array and TüN software work to streamline tuning of car audio DSP products.
• BOAT AND RV APPLICATIONS: Evaluate individual or multiple zones in an audio installation for frequency response and level.
• CAPTURE AUDIO DATA: RTA measurements can be captured for later viewing and data analysis.

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) (differentially driven)
• 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 ± 0.5 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 (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
• 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

Outputs:

• DAC Output
• Connectors Unbalanced RCA
• Output impedance 200 Ω
• Output Level at 0 dBFS (RMS) 4 V
• 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 depths 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-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

What's in the Box:

• MAX^™ hardware interface
• Five measurement microphones with removable windscreens
• Multi-mic fixture with mounting accessories
• USB A/B cable
• 12 V DC power cable
• AC power adapter
• Soft accessory storage bag
• Waterproof hard case