cel4145
Headphoneus Supremus
Woah nelly, chill out.
First and foremost, they're the best 2.0 speaker system out there.
While I don't doubt that they might sound good to you, have you compared them to other speakers? That's a pretty strong claim. For example, Innerfidelity said the Polk Hampden was better: http://www.innerfidelity.com/content/desktop-usb-speaker-roundup-polk-hampden-and-summary. Not doubting you might feel they are the best compared to what you heard--after all, speaker choice is a bit subjective--but it would help to know what you are comparing them to.
I'd also like to kindly inform you that these speakers can be had for less than $240 on Amazon.
That's good. Like most brick and mortar store home audio speaker companies, Def Tech's speakers are usually a good bit overpriced at full MSRP, IMO. Generally very good products. But overpriced.
As for the frequency response...I'll let you try to figure that one out, Sherlock.
It's a reasonable request. Def Tech is known for playing fast and loose with speaker frequency responses. They'll list a low end sometimes with a frequency response range that is not usable, based on independent measurements. The fact that they don't provide a frequency response range on their web page is certainly reason to question how low they go. John Grandberg at Innerfidelity said that they seemed linear down into the 60hz range.