1. Audio and Acoustic Analyzer
Introducing the new
flagship of the
handheld EXEL line.
V1.011, Oct. 09

2. Audio and Acoustic Analyzer
Sound Level Meter Real Time Analyzer

3. Audio and Acoustic Analyzer
Sound Level Meter Real Time Analyzer
Acoustic Analyzer

4. Audio and Acoustic Analyzer
Sound Level Meter Real Time Analyzer
Acoustic Analyzer
STI-PA Analyzer

5. Audio and Acoustic Analyzer
Sound Level Meter Real Time Analyzer
Acoustic Analyzer
STI-PA Analyzer
Audio Analyzer

6. Applications Live Sound Solutions
Sound Installations and Recording Studios
Broadcast
Environmental Noise Measurements
Service and Repair Centers

7. Configurations +
M2210
Set XL2 + M2210 XL2 with M Extended Performance - Measurement Microphone with class 1 frequency response
Set XL2 + M4260 XL2 with M4260 Measurement Microphone, Class 2 +
M4260

8. XL2 Interfaces 8

9. Big LCD 160x160
with Backlight
Function Buttons 9

10. Rotary Wheel
Limit LED with
red, yellow, green
Indication 10

11. Shock
Protection
Jacket 11

12. Headphone
Output 12

13. Wire Stand 13

14. Battery Compartment
with Li-Po Battery
included
Rear Speaker 14

15. Balanced &
Unbalanced Input
Tripod Mount 15

16. Voice Note
Microphone 16

17. Mains Power Adapter Input USB Interface Digital I/O
(prepared for later
firmware extension) 17

18. Mini-SD Card 2 GByte
Removable 18

19. TOSLink Output
(prepared for later
firmware extension) 19

20. XL2 Key Features

21. Features Flexible User Interface Visual Limit LED of high sound levels
Mini-SD Card, 2 GB removable
Real Time Clock
Built-in Speaker
Rechargeable Li-Po Battery included
Automated Sensor Detection reads electronic data sheet of M4260 and M2210
Wave File Recording
Voice Notes

22. Sound Level Meter / RTA Applications Live Sound Events
Environmental Noise Monitoring

23. Sound Level Meter / RTA
Measures actual level, Leq, Lmin, Lmax, LCpeak, …
Frequency weighting A, C, Z
Time Weighting F, S, Peak, I*
Linear operating range > 100dB
XL2 accuracy acc. IEC 61672, class 1
Logs automatically to Mini-SD card
Real time clock
*optional

24. Sound Level Meter / RTA Extended Acoustic Pack
Percentiles %: 1, 5, 10, 50, 90, 95, 99%
Time Weighting: Impulse
Sound Pressure Level LIeq
Sound Exposure Level LAE
TaktMax as specified in DIN
High-resolution FFT with 0.4 Hz steps

25. Sound Level Meter / RTA
All measurement results are simultaneously available.
Select the available levels to be shown on the XL2 display

26. Sound Level Meter / RTA
3 or 5 levels may be displayed simultaneously in different selectable sizes

27. Sound Level Meter / RTA Displays two spectra simultaneously
Resolution selectable
Broadband values displayed in parallel
Measurement range selectable
Measurement time and control

28. Sound Level Meter / RTA Pre-defined limits for all levels
Firmware V1.00 operates with fixed limits
Level ok  Limit LED is GREEN
Level near limit  LED is YELLOW
Limit exceeded  LED is RED

29. Public listening area
Stage
FOH
Loudest accesible position
 Audience position
Measurement
Position
k1 = Difference in LAeq
k2 = Difference in LCPeak
Live Sound Challenges
Sound pollution protection limits maximum level in audience area.
Loudest audience position is commonly not accessible for measurements.
XL2 offers a wizard to measure correction values k1 and k2 between loudest position and measurement point

30. Correction Value Wizard
Run Pink Noise in the auditorium
Measure level at the loudest position
Measure level at the measurement point, e.g. at the mixing desk FOH
XL2 stores results with time stamp and displays the calculated correction values k1 and k2

31. Audio Analyzer Balanced XLR, unbalanced RCA input
-112 dBu to 30 dBu (2.0 uV to 25 V)
Residual THD+N <-100dB (0.001%)
Frequency range: 9 Hz to 20 kHz
Frequency accuracy: 0.003%
Loudspeaker and headset output for signal monitoring

32. FFT Analyzer Measures LZF and Leq simultaneously
Real time FFT in 3 linear ranges displayed by 142 frequencies
7 Hz Hz
58 Hz kHz
484 Hz kHz
High-resolution FFT including zoom mode up to 0.4 Hz steps with Extended Acoustic Pack in the range from 5 Hz – 20 kHz

33. RT60 Analyzer
Measures 8 octave bands from 63 Hz – 8 kHz according to ISO3382 by Schroeder-method
Auto triggering
Auto averaging
Measurement error indication
Stimulus:
Gated pink noise
Impulse sound source

34. Polarity Testing
Checks polarity of speaker cabinets, individual drivers and line signals
Positive/Negative detection
Using internal microphone or input signal of XLR/RCA connector

35. Polarity Testing
In-depth verification of the polarity - frequency relation for speaker cabinets or other multi-way-systems
Sample Screenshot left: The major part of the signal energy is measured in the mid-range frequency bands, thus the overall displayed polarity is NEGATIVE.

36. Propagation Delay For accurate setup of delay line arrangements
Measures delay between electrical reference and acoustical signal
Relative measurements supported
Displays distance to speaker in meter or feet

37. STI-PA* Analyzer
Measures speech intelligibility of public announcement systems
Complies with IEC (2003) and NFPA 72
Displays STI and CIS results
Shows table of modulation indices and Leq’s
Supports ambient noise post processing
*optional

38. Application Profiles XL2 supports application profiles
Application profile may disable and hide any selections or measurement functions
Allows fixed operator interfaces for basic users
Firmware V1.0 offers a set of fixed application profiles

39. Store and Log Results Results stored as ASCII files
Storing all or subsets of measurements results
Adding a voice note to measurement
Records the ADPCM compressed audio signal in parallel

40. Automated Sensor Detection
Automatically detects microphone type
Reads sensitivity
Reads product data
Shows last calibration
ASD Cable Extension cable tandem up to 20 m supported

41. Powering Concept Rechargeable Li-Po battery included
typical battery lifetime > 5 hours
Dry cell batteries
type AA, 4 x 1.5 V
typical battery lifetime > 4 hours
Mains power supply 9 VDC
charges Li-Po battery in operation

42. Measurement Microphones42

43. Measurement Microphones
Omni-directional, pre-polarized condenser, free-field microphone
Build-in Pre-amplifier
Electronic Data Sheet installed
Phantom Power 48 VDC
High dynamic range
Wide frequency range
Low residual noise
M2210
M4260

44. Comparison of Microphones
Extended Performance
Capsule / Transducer
1/4”
permanently installed capsule
1/2” detachable capsule
with 60UNS2 thread
Flatness
Class 2 (IEC )
< ± Hz Hz
< ± Hz - 20 kHz
Class 1 (IEC )
< ± Hz - 4 kHz
< ± Hz - 20 kHz
Frequency Range
20 Hz - 20 kHz
1 Hz - 20 kHz
Residual Noise Floor typical
24 dB(A)
18 dB(A)
Upper Limit of Dynamic Range typ.
136 dBSPL
145 dBSPL
Sensitivity typical
-30 dBV/Pa ±4 dB
(30 1kHz)
-34 dBV/Pa ±3 dB
(20 1kHz)

45. XL2 Accessories 45

46. Accessories Ever-Ready pouch Detachable front flap
Connectors accessible
Zipper
EXEL System Case
Compartments for XL2, MR-PRO, M4260 or M2210
Accessories, battery and adapter

47. Accessories Battery Charger Includes spare battery
Connects to V AC
Intelligent charger controller
Spare Battery
rechargeable spare battery
Li-Po battery

48. Accessories
ASD Cable
For extended connections of the measurement microphones M4260 or M2210
Maintaining the automated sensor detection
Length = 5 meter (16 feet)
External AC power supply
Suitable also for use with MR-PRO
Operates XL2 and chargers Li-Po battery in parallel

49. Firmware Options Extended Acoustic Pack
Percentiles: 1%, 5%, 10%, 50%, 90%, 95%, 99%
Time Weighting: Impulse
Sound Pressure Level LIeq
Sound Exposure Level LAE
High-resolution FFT including zoom mode up to 0.4 Hz steps in the range of 5 Hz - 20 kHz
TaktMax and values as specified in DIN

50. Firmware Options STI-PA Option
Measures speech intelligibility of public announcement systems
Complies with IEC (2003) and NFPA 72
Displays STI and CIS results

51. New Technologies in Audio