Description
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.
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” (90922)
What else will you need:
- A PC (Windows 10), or Mac (OS X Catalina or newer)
- JL Audio's free TüN 4 software, available here
- A mic stand or tripod to support the multi-mic holder.
To learn more:
Specifications
General 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 | ≤ – 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 | 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 |