Flat

Here's a number worth sitting with: ±3dB. In the world of amplifiers, that spec would be a scandal — a laughingstock. You'd return the thing (or you should). In the world of loudspeakers, ±3dB is genuinely excellent. 

That single comparison tells you almost everything you need to know about how complicated speaker design actually is — and how little a spec sheet ultimately reveals about what you'll hear in your room.

Because a speaker that measures ±3dB in an anechoic chamber will almost certainly not measure ±3dB in your room. Your room has its own frequency response, shaped by its dimensions, construction materials, and furnishings, and it interacts with the speaker in ways that can swing bass response by 10dB or more. First reflections alter the midrange and treble. The speaker and room create the response you actually hear together, as a combined system.

The anechoic measurement is a starting point, not a destination.

This is why voicing a speaker is as much art as science. You can design something that looks perfect in the lab and sounds wrong in every real room you put it in. Measurements are essential tools — we use them constantly* — but they're the beginning of the conversation, not the end.

*We just popped over a huge sum of money to buy Chris Brunhaver a Klippel measurement system. Now, Chris is among a rare handful of designers in the world with this state-of-the-art measuring tool and he's grinning from ear to ear.

Human hearing isn't a flat detector. Our sensitivity peaks in the 2–5kHz range, where speech intelligibility lives, and falls off in both directions. A ruler-flat speaker can actually sound thin or forward because our ears are already perceptually boosting those frequencies before the sound even registers consciously. So within the constraints of what the technology allows, Chris shapes the response with extraordinary care — a gentle rise in the lower midrange here, a slight recession in the presence region there. Deviations so small they barely register on a measurement but make an audible difference between a speaker that sounds accurate and one that sounds genuinely musical.

The recording adds yet another layer. Engineers mix on speakers with their own tonal character, and those mixes are balanced to sound right on those particular speakers. Play them back on something with a different tonal center of gravity and you're hearing a shifted version of the engineer's intentions.

None of this is an argument against measurement or against accuracy as a goal. It's an argument for understanding what the measurements mean — and recognizing that the goal is music that sounds real, not a speaker that looks perfect on a graph while leaving you cold in the listening chair.