Airmotiv 4s in a small bedroom (where I am currently using) provide as much bass as I want for music/games from the PC. A larger room would probably need the 5 for the extra headroom and larger bass driver.I have mine about a foot from the rear wall, angled up and towards my ears. HF/LF shelving EQ are both at -2. Output is from mobo optical to a Fiio D3 -> monoprice beefy single RCA to each Airmotiv. Just finished listening to Daft Punk and some classical stuff and I don't feel I am missing out on the bottom end. I listened to some psytrance and didn't feel like much was missing but I am not a basshead so take my comments with a grain of salt. These definitely don't sound like the NHT superzero/one with no sub so I am pretty satisfied with the low frequency extension for their size.The Airmotivs are getting a small rest since I just got a used pair of Grado RS2s and have been trying the phones for a bit.
I hope Emotiva releases a sub option because I might want another pair for surround and a sub for movie watching. I bet an NHT sub would pair nicely with these or something from HSU. I have never tried the Emotiva subs before but their amps are pretty top notch and my experience with their speakers is great. HSU is pretty hard to beat for subs and the STF1 is probably a good bargain at $299 to pair with the Airmotivs until Emotiva has an option closer to the price range of the 4s.
Awesome, thanks! That is right in the range that I wanted.