Using aerospace technology to mount the tweeter at the precise
acoustic centre of the midrange cone, both act as a single, time-
aligned point source that disperses an accurate sound image evenly
throughout the room. This has two main benefits: everyone in the
room experiences the same accurate 3D effects (as opposed to
just those in the conventional ‘sweet spot’); and it gives you far
greater freedom to position the speakers where it suits you.
The new Uni-Q
array in the XQ has been further refined, with
a sophisticated new 19mm (0.75in.) elliptical dome tweeter,
improved acoustic geometry and ‘tangerine’ waveguide for even
more realistic vocals and even smoother, louder and clearer high
frequency response.
Uni-Q
®
THE
Uni-Q
driver
page
14
KEF’s patented Uni-Q
driver configuration is what makes the
XQ range sound noticeably better than conventional speakers
in normal rooms.
A c O U S T I c I N T E l l I g E N c E
KEF Reference Series
– Visionary innovation
dB. Level. Sound Pressure
100
95
90
85
80
75
70
65
60
500 1k 2k 5k 10k 20k
Frequency, Hz
dB. Level. Sound Pressure
94
86
78
70
62
54
46
38
30
22
Frequency, Hz
0 50 100 200 500 1k
dB. Level. Sound Pressure
100
95
90
85
80
75
70
65
60
500 1k 2k 5k 10k 20k
Frequency, Hz
dB. Level. Sound Pressure
94
86
78
70
62
54
46
38
30
22
Frequency, Hz
0 50 100 200 500 1k
The XQ LF driver
– top line indicates the improved and
increased dynamic range of the LF driver, the lower line
illustrates the reduced harmonic distortion
Response comparison
– grey line indicates response without the
‘tangerine’ waveguide, and white with ‘tangerine’ waveguide
page
15
At the lower frequencies, the new LF drivers are equally
impressive. Redesigned magnetics and low mass coils of edge-
wound copper coated aluminium wire allow the cone greater
length of travel for gloriously extended bass. Faraday loops are
also incorporated to improve dynamics and reduce harmonic
distortion further still.
The KEF technology advantage doesn’t stop there. Inside, there
are literally dozens of refinements and innovations, from ultra-
low distortion motor systems that deliver a more open, natural
sounding bass to audiophile grade tiered crossover technology
originally developed for the Reference Series.
Redesigned LF driver
for
improved dynamic range
