Grannyring....From Sasha w/p manual.
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Midrange and Tweeter Resistors
The Midrange Level, which consists of two 3.2 ohm resistors in parallel, and Tweeter Level, which consists of two 1.6 ohm resistors in parallel, resis- tors provide precise level matching for the midrange and tweeter drivers correspondingly. The resistors also act as ultra high quality fuses which open be- fore a driver can be damaged by excess power. See Section 6.0 for details in replacing these resistors in the event one of these resistors is damaged.
Additionally, these resistors can be used to tailor the output of the corresponding driver to overcome tonal balance issues that result from room acoustics.