Need advice. Dialogue indistinct with current Boston Acoustic Center speaker 424v. Need to replace it. Currently I have 2 Front Infinity Beta 40 Speakers. Any suggestions for a compatible Center speaker ? Here are the Infinity Beta 40 Specs: Driver configuration 3-way. Woofer size (inches) 5.0 in, 1.0 in, 8.0 in Response bandwidth 35 - 20000 Hz Input impedance 8.0 Ohm; Crossover Frequency •600 Hz, 3.2kHz; 24 dB/Octave 45Hz to 20kHz (+/- 3 dB), 40Hz to 40kHz (-6dB) Frequency Suggestions would be appreciated.