#1
I have two amps, one that has an 8 ohm output, one with a 16 ohm output.

I am going to purchase a THD hotplate attenuator. The manual says:

"Q. Can I still use the Hot Plate if it has a different impedance than my amp?
A. ONLY if the impedance of the Hot Plate is EQUAL TO OR GREATER THAN that of the
amp. However, this will lessen the effectiveness of the Hot Plate’s tone controls."

Does this mean if I buy the 16 ohm hotplate I can run my 8 ohm amp through it?
"teh most gains"
#3
I'd just buy a weber. Cheaper and most of them have them selectable resistances so you can use them with 4, 8, and 16 ohm heads.
I don't give a shit if you listen to me or not
#4
Can I use my 8 ohm amp into the 16 ohm hot plate then into an 8 ohm speaker cab?
"teh most gains"
#5
If you have an eight ohm amp then get an 8ohm hot plate. Also, with any attenuator the impedance of the cab after the attenuator doesn't matter. If you plan to bypass the attenuator then you need to make sure the cab matches the impedance of the amp, otherwise the cab doesn't matter.
I don't give a shit if you listen to me or not
#6
^ I just found this in the manual.

IMPORTANT: WHEN USING JUST ONE OF THE SPEAKER OUTPUTS FROM THE HOT
PLATE, THE SPEAKER CABINET SHOULD HAVE THE SAME IMPEDANCE AS THE
HOT PLATE.
"teh most gains"