Aadams Posted July 24, 2019 Report Share Posted July 24, 2019 I have searched the CSP site and can't find evidence of this being previously discussed. I have read here that AR3 mids somehow become less compliant and have lower output with age, apparently similar to the 3/4" tweeter problem. My question is: Does the AR3a mid have a similar weakness that causes its output to noticeably degrade over say the same span of time as the mid of the AR3? Aadams Quote Link to comment Share on other sites More sharing options...
ra.ra Posted July 25, 2019 Report Share Posted July 25, 2019 I think the basic question you are posing will be understood here, but first you'll need to clarify specifically which mids you wish to compare. Your thread title is not consistent with your text: are you comparing the AR-3a midrange with the AR-3, or the AR-5? Quote Link to comment Share on other sites More sharing options...
Aadams Posted July 25, 2019 Author Report Share Posted July 25, 2019 Fair enough. Just consider it to be a question regarding the degradation of the 3a mid over time, as compared to the models of AR3 mids that have a history of noticeably degraded performance, due to breakdown of the physical properties in the materials used to make them. Adams Quote Link to comment Share on other sites More sharing options...
RoyC Posted July 26, 2019 Report Share Posted July 26, 2019 On 7/24/2019 at 7:51 PM, Aadams said: I have searched the CSP site and can't find evidence of this being previously discussed. I have read here that AR3 mids somehow become less compliant and have lower output with age, apparently similar to the 3/4" tweeter problem. My question is: Does the AR3a mid have a similar weakness that causes its output to noticeably degrade over say the same span of time as the mid of the AR3? Aadams No...The issue only applies to AR-3a tweeters, AR-3 mids, and AR-3 tweeters. These drivers have foam suspensions and a rubber based coating over the exposed voice coil gap. AR-3a mids have modern style cloth roll suspensions, which are very different and very stable. They usually either work or they don't. The most common problem is a stress break of a voice coil lead where it goes through the dome. Roy Quote Link to comment Share on other sites More sharing options...
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