Power Cord
1. What is the model Denon AVR you got from A4L.
(Also if it's missing a power cord, I will call them, they should have supplied it)
It's just a standard IEC "computer" power cord. On the back of the receiver is it 2 or 3 prong power connector? You can pick one up at Amazon or Best Buy. Just buy 2 or 3-conductor/prong computer cable, preferably of 16AWG thickness or better (Denon uses 16AWG, 14AWG would be even better). I think Denononly uses 2 conductors (no ground), but not sure you will have to inspect.
Honestly I would go back to A4L and either have them send you the cable or at least offer you a credit back for an incomplete item.
Subwoofer
This is off an entry unit, usually it will be listed as a Pre-Out, but will have a subwoofer or Sub1 label near it. I highly reccomend that if they did not send you the user manual of your particular model, you go to Denon's website and download it.
If you have further questions, please indicate the following information
- Model Number of your Denon AVR
- Model Number of your TV (if you have questions on hooking up)
- Model of Speakers/Sub might be helpful.
Welcome to home theater, I would highly reccomend being patient and taking the time to learn how to hook things properly. Not sure your expereince level connecting speakers, etc, but want to make sure you avoid potentially damaging your new setup.