The LxT-QPR is discontinued and no longer available. Please see Spartan Series Sound Level Meter Model 821IH-QPR for a recommended replacement and to learn more about Larson Davis' latest offering for Firearms Noise Assessment.

The Larson Davis SoundTrack LxT-QPR offers quantitative measurements of sound pressure levels generated by firearms with and without suppression devices and silencers.

Many firearm examiners are tasked with determining whether installation of a suppressor or silencer on a firearm results in a "perceptible" reduction of the sound pressure level of a gun. The SoundTrack LxT-QPR provides this functionality utilizing an easy-to-use handheld platform.

With the included ┬╝" prepolarized pressure microphone, Model LXT1- QPR, is capable of reading the very high levels typically associated with gunfire testing. These readings can quickly be organized and stored on internal memory, and exported to a PC for archiving and reporting. Reports generated include selectable noise parameters (peak, background level, max SPL, etc.) as well as calibration history of the instrument, important for courtroom presentations.

All Larson Davis sound level meters are supplied with NIST--traceable calibration certificates. Yearly calibration services are offered. The Larson Davis Model LXT1- QPR is an ideal tool for gathering, analyzing and presenting detailed firearm noise data quickly, easily and concisely.

Highlights Type 1 Accuracy for Courtroom Traceability
Large backlit display
30 Hours runtime on Energizer® e2r Lithium Batteries
Simple setup specific to gunfire testing applications
Large internal memory capable of storing multiple tests
USB connection to PC for data archiving, reporting and storage
Utility software provides custom report generation
Applications Firearm noise testing
High SPL noise testing

Firearm Noise Comparison Test

Model LXT1-QPR and Model 800B Sound Level Meters are used to measure firearm noise. A test was performed in reference to MIL-STD-1474E, which offers requirements for measuring impulsive noise, to evaluate the differences in measurement results. Read the complete report here.