Hi, this is Maurizio from Rome. I have a general question about the measurement of T&S parameters. I happened to find an old 5" double coil fullrange loudspeaker, made by Siare french company. It's a veeeery old item, no marks, sign or info on it, apart of this text:
" 68145 8 Ohm
SIARE
2 04 86"
I was unable to find any further info about the speaker. The foam was destroyed, and I replaced it with some new I had handy on my desk; not a great job, but it seems to work fine. Now, I'd like to use the speaker for some future project, therefore my question is: what about the T&S paramethers? Should I measure them separately for the two channels, and consider the speaker as a couple of indipendent speakers, or is there any specificity I have to take intro account for the measurements? I think this info could be useful to those who want to recycle old double coil car speakers, too. Any hint from the members will be very appreciated. PS: please, forgive my basic english…
" 68145 8 Ohm
SIARE
2 04 86"
I was unable to find any further info about the speaker. The foam was destroyed, and I replaced it with some new I had handy on my desk; not a great job, but it seems to work fine. Now, I'd like to use the speaker for some future project, therefore my question is: what about the T&S paramethers? Should I measure them separately for the two channels, and consider the speaker as a couple of indipendent speakers, or is there any specificity I have to take intro account for the measurements? I think this info could be useful to those who want to recycle old double coil car speakers, too. Any hint from the members will be very appreciated. PS: please, forgive my basic english…
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DATS 3 is a very neat tool to get all the information you need: https://www.daytonaudio.com/images/resources/dats v3 brochure.pdf
Getting information on how the driver was in 1986 might not be of much help. Measuring it as it is today is the way to go IMHO.
Getting information on how the driver was in 1986 might not be of much help. Measuring it as it is today is the way to go IMHO.
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Thanks MtlJazz, you confirm what I thought: nominal parameters are not significant, particularly being such an old, and even modified, object. But my question is not on how to measure T&S, it's a general question, I mean: if it's a double coil speaker, is there any special relationship or interaction about the two chans? The easy way is to consider it, from a tech point of view, as a couple of separate speakers. But maybe there is some "hidden link" about the parameters of the two channels, some more parameters which need to be taken into consideration, when using this kind of loudspeaker. And, in any case, being such an old item, I would like to use REW and some hardware I already have to make the measurements (I work in an electronics lab, not an audio-lab but I have plenty of computers, oscilloscopes, low tolerance electronic components and so on).