It was not clear if the speaker made sound, or if it really made any noticable difference in output in the first place. I assumed it didn't work at all. Its not really necessary to mend the pieces together. Often a dab of rtv will be all thats needed.
** The term " nominal crossover point" = meaningless drivel !!
Cos the word "nominal" means " in name only ".
In *reality*, a 2:1 impedance mismatch with a x-over filter has DRAMATIC effect on its performance and the load impedance seen by the driving amplifier in the region of the crossover frequency.
** That is utter BOLLOCKS.
Eg An under loaded LC x-over filter turns into a series tuned circuit - it then has a VERY low input impedance at the resonant frequency and MULTIPLIES any input signal by many times creating a huge peak in the response around that frequency. Very bad news.
Only with a first order crossover. As the fliter order increases, the difference will be less, but the filter damping suffers, so the response will still be affected.
Not to mention a GOOD crossover compensates for the T-S characteristics of the driver ( especially voice coil inductance ).
I once did a sweep of a driver without thinking, cone downwards on the bench. Turning it cone up made a visible difference to the plot. This is because the speaker is doing mechanical work.
the multimeter is doing the measurments. I am simply showing that a VOM is a useful tool that can be used to measure impedance
you do not need a fancy occiliscope/signal gen rig a amp passing noise such as between radio stations is sufficent
I use the Part Express /Dayton WT3 for my impedance measuments but years of in feild service to commercialsound system required that i understand how to get the most out of a VOM
One of the fascinating things about UseNet is coming into contact (even if only at a distance) with people who, at the very least, need someone to talk to.
"Phil" (that's a Hitchhiker joke), do you think I'm actually bothered by your remarks?
You are almost certainly correct. They tended to use OEM custom drivers for mass-market consumer goods back in the day (just as is the custom today).
You have not stated any motivation for this. In the likely opinion of most people here, you have a speaker that is not worth any effort to repair.
As others have observed you cannot measure AC impedance with a device that measures DC resistance. And AC impedance is only a small part of the picture. Your chances of finding an exact replacement depend on finding another set of speakers and cannibalizing the driver. Else you have no practical way of finding an exact (or even close) replacement. Fortunately, the speakers likely aren't worth the effort anyway.
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