MijnKPN vs SPL Reference

New customer? Check your order status, get help with installation, set up your WiFi and discover everything from KPN. Have you been with us longer? Adjust your subscription, share MBs, get extra services, discover our deals via the app and much more. Fast, easy and safe. 3 advantages of the MijnKPN app: • Arrange everything regarding your subscription via the MijnKPN app. From installing equipment to using products. • Find answers faster and solve problems yourself most quickly. Can't figure it out? With a call appointment via the app you will always be helped sooner. • Voor Jou: football tickets, discounts on days out and other extras. Voor Jou, from us, collected in the MijnKPN app. You can do this with the MijnKPN app: • Track the status of your order • Install all your devices with your personal installation help • Share your MBs with your housemates, once or every month automatically • Customize your subscription: from speed and extra bundles to channel packages • View, pay and download your invoices • See how much you have used • Resolve faults faster with our in-app troubleshooters • Improve your WiFi with the WiFi Manager • Ask questions to Dot, our digital assistant • Discover attractive extras with KPN Voor Jou This is how you use the MijnKPN app: 1. Download the app 2. Log in with your KPN ID or create a KPN ID 3. Add your subscription(s) to your account

Hear your system. See your room. SPL Reference combines sound-level measurement with Room Map, a new way for Hi-Fi enthusiasts to explore how bass changes across a listening room. Measure at several positions and see areas of relatively high and low sound pressure at the selected frequency, helping you investigate uneven bass and make more informed speaker and listening-position choices. EXPLORE YOUR LISTENING ROOM • Create a rectangular room and follow a guided 9- or 12-point survey, or customise your measurement positions. • Explore frequency-selectable heatmaps with 1/12- or 1/3-octave bands. • Use generated bass pink noise through your playback system, or a stable external pink-noise source. • Review individual points, capture-quality notes and a repeat measurement at the reference position. • Save maps in Sessions, organise them in projects and export the survey data. A COMPANION TO ROOM REFERENCE Use SPL Reference alongside the separately available Room Reference app to add measured spatial bass comparisons to your room investigation. We are working to integrate the two apps; direct integration is not included in this release. MEASURE WITH CONTEXT • Live A-, C- and Z-weighted measurements • Fast, Slow and Impulse time responses • LAeq, LAFmax, LCpeak and time-history views • Pause, resume, event markers and integrity evidence • Clear distinction between indicative readings and reference-calibrated chains ANALYSE AND DOCUMENT • 1/1- and 1/3-octave frequency analysis, spectrum and spectrogram history • Statistical exceedance levels from L1 to L99 • Noise-exposure assessment using NIOSH, OSHA and configurable models • Projects, notes, photographs and optional location evidence • Microphone profiles, acoustic calibration records and drift checks • Professional PDF reports for ordinary sound-level measurements Browse the public measurement archive from inside the app. Measurements are never uploaded automatically. START FREE. UPGRADE ONCE. The free tier includes the built-in microphone, five active measurement minutes per calendar month, two saved measurements and one project. Room Map and advanced features require Lifetime Professional Unlock, which removes the free limits with one purchase and no subscription. Room Map is included for existing Lifetime Professional owners. ABOUT YOUR RESULTS Room maps show the combined response of your speakers and room at one microphone height. Colours compare the selected frequency across measured positions. Uncalibrated maps display relative levels in dBFS. Results depend on the microphone, calibration, playback setup and measurement conditions. SPL Reference distinguishes indicative and calibrated workflows and does not claim that an unvalidated device is a certified sound-level meter. Occupational-noise results support assessment and documentation; they do not replace professional judgement or applicable legal requirements.