I have finally drilled down to purchase RT3 and went in for a demo, but surprised to see ports on all of it's 3 channels on the soundbar. AFAIK, this "ported" thing is used mainly on subwoofers. The soundbar has just 1.5 inch speakers which they call as full-range drivers. The subwoofer exists for low frequencies. Any idea? Moreover, when Sony calls it a home theater system, why not include any dedicated twitter?