type R and kenwood kac amp

ok im geting a kenwood kac 8152d mono amp to run one alpine type R 21" sub

i dont understand why it the amp appears to have 2 channel so im not sure wat model the dual 4 or dual 2 ohm to get so i get the 550 rms outa the amp.

help me please

 

Amp is 550W at 2-ohms, so get the 1242, dual 4-ohm sub and wire in series parallel to produce a 2-ohm load.  (You did mean 12-inch, not 21-inch, right?)

Here's the picture

To get a 2 ohm load, the voice coils would need to be wired in parallel. If they are wired in series, you have have an 8 ohm load. Also, the amp is a mono amp and it has two sets of terminals to make wiring up multiple speakers a little easier.

The terminals on this amp are wired in parallel internally so you could wire up two speakers, one to each pair of terminals, and it would be like wiring them both together to a single set.

Here's some more horrible artwork on my part.

I meant parallel.  (I'm starting to worry myself).

thanks for the info