It used to be that mixes were checked on Auratones, the low bandwidth boxy speakers to check for TV and small radio compatibility. Sadly these speakers are no longer, but Behrnger have introduced something that fills the void. Their Behritone self powered boxes can help you check your mix on something that reflects that sound - the originals rolled off at 180Hz indeed!
$99 available soon, also as a more fullsome C50A at $119