This is a bit misleading, while inductance is an important and all to often left out T/S parameter for car audio, it normally limits output from about 90ish-100Hz on up. Not between just ~70- ~100. This is why low inductance is KEY for midrange drivers. If a midrange driver has too much Ls, it will lose efficiency big time, so will a tweeter.
For bass drivers inductance is less important because is plays almost no role in the frequency response where subwoofers are uses most. 15Hz-80Hz
We use shorting rings in our subwoofers to accommodate inductance where we feel it’s necessary. Most car subwoofers do not even use these because they add to the cost and don't increase that silly RMS # that sells a driver to the common kid and only provide a slight improvement in the frequency response up high and actually lower the BL product, lower the sensitivity and make the speaker less loud down low because you have to open up the gap to fit the copper ring inside.
We also use anti-flux modulation shorting rings which it is a much more relative problem with subwoofers because flux modulation will actually cause some serious distortion problems at high outputs in relevant frequencies.
