Its (not "it's"=it is) life expectation is infinite -- within scientific limits of error.
Assuming the speaker has been well treated up till now, that is: check the drive units, their surrounds, the sound (is there homogeneity between the two spkrs); if possible, get someone to check the dc resistance of the drivers, just in case. Regards
Assuming the speaker has been well treated up till now, that is: check the drive units, their surrounds, the sound (is there homogeneity between the two spkrs); if possible, get someone to check the dc resistance of the drivers, just in case. Regards