What i have read the l 880 goes quite deep,down to 32hz when sterophile magazine reviewed this speaker.That's better then the s312,in a medium size room hooked up to a hafler xl600,that music concepts hot roded to over 300 per channel should sound close to full range.But i haven't listened to the l880 or the 890,which some of you have.it seem's like good bang for the buck for two channel.