Hi,
I'm completely new to the home theater world and would appreciate some help. This is my first home theater I'll be purchasing ever.

I bought the following speakers from Axiom right before they raise their prices:

VP150
M60ti
QS8 + QSS Stands
EP350

If it wasn't for the prise hike, I think I would've held off for another 2 weeks(after Thanksgiving). Also, wife gave me the okay to spend $7500 on a home theater setup. Actually, $10K, but I need the other $2500 for a computer system.

Anyhow, here are my questions.
1. I'm looking at purchasing either the Yamaha RX-V2500 or the HK AVR-7300. Reading the user manual for Yamaha, it states "Connect a subwoofer with a built-in amplifier..."
Does this mean that I cannot connect the EP350 to this subwoofer jack on the Yamaha?
2. If I do connectthe subwoofer to this jack on the Yamaha, would I damage the RX-V2500 and EP350?
3. Are all dual banana plugs the same distance from tip to tip meaning if I buy the dual banana plugs from Axiom, it'll fit just fine on the Yamaha or HK?

I would appreciate if someone could please help answer my questions for me.

Thank You!