This page is the follow up of Part-2, here you will find the outcome of my measurements, pros and cons about the 1/4″ Class 2 electret capsule measuring microphone shootout.
Results and findings; after measuring the three microphones the first what struck me was the recorded SPL deviation between the MicW i436 and the other two microphones (the reference – Neutrik 3382, and the other measured microphone – iSEMic 725TR).
All SPL levels below 85 dB the MicW i436 measured 0.5d dB to 0,6 dB of scale (comparing to the two other microphones).
At levels above the 85dB the differences gradually did lessen to zero around 94 dB (where it was calibrated).
Like me most of the audio enthusiasts are interested in measuring their own loudspeakers and/or room. A professional Class 1 measuring microphone could cost € 1000,- or more. Most people have not that much money to spend so what are decent and affordable Class 2 measuring microphones?
I’ve found and tested several 1/4″ Class 2 measuring microphones in the € 20,- to € 200,- range. They have all in common that they can be used with a mobile device (like; iPhone, iPad, Android or Windows mobile phone/tablet), but also with a notebook or PC.
For the tests I’ve used an old Neutrik (NTI) 3382 measuring microphone (with frequency correction files) as reference. The measurements were taken in my living room using a pair of bi-amped Philips VN3100-25 (OEM Stage Accompany Blue Box, SA4525). The distance between the measuring microphones and loudspeaker was set at 0.5 meter and 1 meter distances.
A couple of weeks ago I finally hooked up the MicW i436 Kit to my MacBook Pro to take some measurements of my loudspeaker set in my living room. I own a set of Philips VN3100-25 active loudspeakers which inhabits the famous Stage Accompany SA8525 Ribbon Compact Driver and a SA1513 woofer,
The SA8525 RCD with its frequency range from 1 kHz to 30 kHz is the ideal driver to test the MicW i436 Kit with Smaart v7 Di.
The MicW i436 (designed primarily for iPhone, iPad and iPod Touch) uses a 4-conductor 2.5mm phone connector (CTIA/AHJ standard) that fits into any mobile device, notebook or PC with a headphone/mic socket following that standard. For one-channel measurements like SPL measurements the MicW i436 can be hooked up directly to a headphones/mic socket of a notebook, for example a MacBook Pro.
Some of you may know about the existence of Smaart® v.7 Di, which is a dual-channel sound system measurement, optimization and control program for Microsoft Windows® and Mac OS X®. You may also have heard of Smaart® Tools for tablets and smartphones which is an in-app purchase of AudioTools.