Gracias a ambos

Lucky, no conocía esa review, efectivamente, muy esclarecedora, me quedo con las medidas:

Measured ... sort of

I just had my Behringer UltraCurve 8024 digital equalizer in (for an excellent review of it please go and have a look at our competition), and I quickly abused it for rough measurements on Quad's new speakers, on-axis, at 1 meter distance, in a rather well-damped environment.

First the tiny 11L. Below 200Hz output drops as a whole by some 3dB, and rolls off sharply below 80Hz. This relative lack of bass luckily is compensated with a slow treble droop between 1 and 6kHz, the highs going mute eventually above 12kHz. Sounds dramatic, but yet, the whole 200Hz-20kHz range still is within the usual +/-3dB band. The 80-200Hz depression indicates a preference for close-to-the-wall positioning for this loudspeaker. I did this for a next measurement, now with sinewave excitation, and 50Hz was reproduced well, while 30Hz was inaudible. (Note that "close to" does not mean "against", as the 11L's rear-firing bass port still needs some room to breathe. But 20 cm or so will do well.)

The larger 12L is a different kettle of fish. Its output is nicely flat between 70Hz and 2kHz, very slowly rolling off above and below. Free standing output at 50Hz is still -7dB. This speaker should be used in the free field, or at the very least not close against a wall or in a corner!

This difference in tuning is interesting and possibly indicates why Quad came to releasing two almost-identical speakers of roughly the same size.

Parece que las Quad 12 L llevan una buena ventaja :

Saludos