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Acoustics & Room Treatment
Room EQ Measuring Equipment
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<blockquote data-quote="Timber_MG" data-source="post: 33013" data-attributes="member: 18"><p>No need for a very expensive mic for measurement, just a calibration of an inexpensive mic. For many uses such devices are adequate, but they do have their quirks (even the Panasonic capsules such as the old colony sound labs modified as per S.Linkwitz for DLSSA iirc). Becasue here in SA there are no calibration services who cater for DIYers I may soon offer such a service in collaboration with Gert and Gerhard.</p><p></p><p>I have personally had some problems with cheaper mics. I remember an audio install I did in the Uk where the system response didn't measure as expected. Hence we decided to hire a B&K 1/4" capsule for a week end (hire costing well more than a ECM-8000 in itself) and ended up with a difference on the order of magnitude of ~5dB @16Hz.</p><p></p><p>Gerhard and I did a difference measurement on our two ECM8000s and one of his panasonic capsules and came up with some very interesting results (and they are unfortunately not in the order of 1-2dB). Funny enough I am looking at a 5" driver to perform the calibration measurement for the LF from 10Hz and up.</p></blockquote><p></p>
[QUOTE="Timber_MG, post: 33013, member: 18"] No need for a very expensive mic for measurement, just a calibration of an inexpensive mic. For many uses such devices are adequate, but they do have their quirks (even the Panasonic capsules such as the old colony sound labs modified as per S.Linkwitz for DLSSA iirc). Becasue here in SA there are no calibration services who cater for DIYers I may soon offer such a service in collaboration with Gert and Gerhard. I have personally had some problems with cheaper mics. I remember an audio install I did in the Uk where the system response didn't measure as expected. Hence we decided to hire a B&K 1/4" capsule for a week end (hire costing well more than a ECM-8000 in itself) and ended up with a difference on the order of magnitude of ~5dB @16Hz. Gerhard and I did a difference measurement on our two ECM8000s and one of his panasonic capsules and came up with some very interesting results (and they are unfortunately not in the order of 1-2dB). Funny enough I am looking at a 5" driver to perform the calibration measurement for the LF from 10Hz and up. [/QUOTE]
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Audio and Video Talk
Acoustics & Room Treatment
Room EQ Measuring Equipment
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