*SATELLITES BASS MODULE
Frequency Response 280 Hz to 13.3k Hz at ±10.5 dB 46Hz to 202Hz at ±2.3 dB
Sensitivity (SPL at 1 meter)* 85.1 dB N/A
Impedance (minimum/nominal) 5.3/8 ohms N/A
Bass Limits (-3/-6 dB) 280/220 Hz 46/40 Hz
*
* measured with 2.8 volts of pink-noise input
To reiterate the above, the Acoustimass's bass module responds to 46 Hz to 202 Hz at ±2.3 dB, while the satellites respond to 280 Hz to 13.3 KHz at ±10.5 dB. This is, by the way, the only speaker that I have ever seen tested with a ±10.5 db allowance. Still, this leaves a frequency gap between the satellites and bass module of about 80 Hz! That is 80 hertz of sound that is completely erased within the system's internal crossovers! I wonder how Bose figured out which 80 hertz matters least in the audible spectrum? I will tell you though that that gap accounts for a HUGE loss in midrange sound, which is responsible for the majority contralto, baritone, and tenor vocals in music, and many sound effects in home theater. And let us not forget that the Acoustimass system also ignores audible signal from 20Hz to 45Hz on the low end (deep bass), and 13KHz to 20KHz on the high end (high treble). Do the math folks, this Bose system only produces 13,176 of the 19,980 Hertz in the audible sound spectrum. That's only ~66% of the actual recording being played back to you! Is this the kind of performance you'd expect from a $1300 product? Most speakers in the same price range are able to respond from 15 Hz to 25 Khz and all modern media formats, from vinyls to DVD, record these frequencies as well. Though these are peak frequencies that most humans can not hear, the pressure produced from 15 Hz and 25 KHz frequencies can be detected physiologically, and will in fact have an effect on the harmonics of the music you listen to. So why does this "industry-leading" Bose company only produce about 52% of the sound of it's equal-priced market competitors? Good question...