Starting a second system, need efficient speaker suggestions.

I, and everyone (not me and ..) The old fat woman with a moustache who taught me grammar would be looking for her slapping ruler.

I know you have subs, BUT, they need to take the low bass out of the line level, then back to amp, some do, some don't.

Some give the speaker's a break, but not the amp. Some give the amp a break which gives the speakers a break.

With borderline power for 'not too efficient' speakers, you want to give the amp a break, so it has plenty of power when not trying to create low bass.

Subs self powered?

front firing?

Fit next to where mains will go?

That will give you Stereo Bass, a wonderful thing, at any volume.

btw, did you see the level controls on those Infinity Kappa 9’s?

I am a big big fan of level controls, so a speaker, which had no idea of it’s intended space, can be adjusted to do a great job ’in that space’. move them, adjust for that space.

I use an inexpensive SPL meter from Amazon, on my tripod, and 29 single 1/3 octave test tones.

final, use your ears.

amazing bytes

$25. delivered is a historic low price, often low is $75. One came up for $9.99. I jumped on it! Gave it to a friend

a/an historic .... who knows which is correct?

elliottbnewcombjr
These are the subs I have

I've heard the old Infinity speakers. Not real impressed with them, sorry. 

How about Omega Audio?