A combined multirate-based Finite Impulse Response filter equalization technique combines a low-order FIR equalization filter operating at a lower rate for equalization of a loudspeaker-room response at low frequencies, and a complementary low-order minimum-phase FIR equalization filter operating at a higher rate for equalization of the loudspeaker-room response at higher frequencies. The base connector housing includes a first main body, a boss groove provided on a first outer surface of the first main body, a first guide part provided on the first outer surface; and a first stopping part provided on the first outer surface. The front disc has a center opening for introducing an oil-contaminated air. In one aspect, limiting criteria may include input criteria applied to input data prior to being processed in a rule engine. The system operates with a handle and stationary jaw in conjunction with a second pivotally secured jaw and internal adjustment bolt. For example, the parameter may be the temperature or may be other than the temperature, such as the fundamental frequency andor the phase of the second signal.