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<blockquote data-quote="zako" data-source="post: 7549700" data-attributes="member: 629735"><p>Do you have T/S parameters for the mids? One way to find out what&#039;s the limit of their mechanical power handling, is load the parameters in WinISD and start a project. (There is no option for IB, I usually just specify a 1.5 to 2cu ft sealed box to approximate a door, should be good enough IMO). In the filter section apply a high pass filter you need to use, e.g. 3rd order high pass filter at 80Hz. Now switch to cone excursion graph and start adding wattage in the signal tab below until the maximum cone excursion of the driver reaches the one way xmax of the driver in milometers (if specs give peak to peak xmax number, divide it by two). The number in the signal tab is the maximum amount of power that the speaker will take while still playing in it&#039;s &quot;SQ range&quot;. There is no point to have more power, because the excursion beyond that number will produce highly distorted sound. You will be surprised how little power most drivers need to get there.. a lot will take 60-80watts tops under this criteria. However, note than most amps are rated at 14.4V these days which is the voltage that they probably won&#039;t see under normal car operations.. so if you need your amp to be able to run 70-80watts of power under number conditions, an amplifier rated for 100watts RMS at 14.4V would be approximately the upper limit of you need.</p></blockquote><p></p>

[QUOTE="zako, post: 7549700, member: 629735"] Do you have T/S parameters for the mids? One way to find out what's the limit of their mechanical power handling, is load the parameters in WinISD and start a project. (There is no option for IB, I usually just specify a 1.5 to 2cu ft sealed box to approximate a door, should be good enough IMO). In the filter section apply a high pass filter you need to use, e.g. 3rd order high pass filter at 80Hz. Now switch to cone excursion graph and start adding wattage in the signal tab below until the maximum cone excursion of the driver reaches the one way xmax of the driver in milometers (if specs give peak to peak xmax number, divide it by two). The number in the signal tab is the maximum amount of power that the speaker will take while still playing in it's "SQ range". There is no point to have more power, because the excursion beyond that number will produce highly distorted sound. You will be surprised how little power most drivers need to get there.. a lot will take 60-80watts tops under this criteria. However, note than most amps are rated at 14.4V these days which is the voltage that they probably won't see under normal car operations.. so if you need your amp to be able to run 70-80watts of power under number conditions, an amplifier rated for 100watts RMS at 14.4V would be approximately the upper limit of you need. [/QUOTE]

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