Axiom Home Page Forums General Discussion Home Theater Frequency response question

Hi guys,

This may be a dumb question but why is there two sets of frequency specs for every speaker. I see the difference is the -9db. can someone translate this into simple terms for me?

The reason I ask this is because I set my recent purchase (awesome ) vp150 to a small speaker on my receiver. I am now debating on whether to set the crossover (from small to large speakers) at 50 or 80hz. Based on the info below I dont know whether to set it to 80hz (the first spec) or to 50hz (the second spec)

Specs for VP150
Freq Resp +/-3dB (Hz) 85-22K
Freq Resp +3dB/-9dB (Hz) 50-22K

Thanks