Q-CS is the most compact Soundsphere loudspeaker,
designed for low-ceiling installations
requiring clear voice announcements and
full-range music reproduction, even at
background levels. Applications include
office buildings, bars and restaurants,
classrooms and retail stores.
the Q-CS, you will experience superior
results while using fewer units than
conventional ceiling loudspeakers. These
loudspeakers offer a smooth hemispherical
coverage pattern, with flat frequency
response and high sensitivity (89dB 1W/1m).
The Q-CS utilizes Soundsphere's exclusive
patent-pending Broadband Linear Excursion
Control to provide high sensitivity and
accurate, articulate low-frequency performance.
Each unit ships fully assembled and uses
a standard tile bridge for 8" speakers.
| Bars & Nightclubs
| Retail & Grocery
low-ceiling applications where clear
voice announcements and full-range
music are required.
to 16kHz ± 4dB
15W, 7.5W, 3.8W, 1.9W, 1W, 0.5W
lbs. (3.3 kg)
x 8-1/8" high
(187mm x 206mm)
x 1-5/8" high
(318mm x 41mm)
8" LF, 1/2" dome HF
Q-CS SAMPLE INSTALLATIONS:
many conventional ceiling loudspeakers can
be replaced by one Soundsphere Model Q-CS ceiling
question comes up every time the conversation
turns to the Model Q-CS. The answer requires
true coverage of conventional ceiling loudspeakers
According to their specification sheets, most "higher-quality" ceiling
loudspeakers produce a full-frequency coverage field (-6dB from on-axis) of
60°. Beyond this cone of coverage, mid, mid-high and high frequencies are
attenuated. These frequency ranges are crucial to speech intelligibility and
perceived "smoothness" of coverage.
loudspeaker systems should never be heard
Listeners should never perceive a ceiling sound system. As listeners move around
the coverage area, the sound level and frequency response should not change
enough to be noticed. Conventional ceiling loudspeakers, when used conventionally,
produce full-frequency sound directly under them and only low frequency sound
off-axis. A listener moving from an off-axis position to directly under the
loudspeaker cannot help but perceive a change in the soundfield.
conventional loudspeakers cannot produce a
smooth, full-frequency soundfield?
Of course they can. The reason that they never produce such a soundfield is
that too many loudspeakers must be used. In the case of the 60° ceiling
loudspeaker in an 8' high ceiling, the loudspeakers would have to be spaced
4-1/2' apart to create such an effect. In a 50' x 50' space, this would require
11 rows of 11 speakers, for a total of 121 loudspeakers. Most conventional
ceiling loudspeaker manufacturers recommend a spacing of 10' for an 8' high
ceiling. In the the 50' x 50' example space, this would require 5 rows of 5,
for a total of 25 loudspeakers. The resulting soundfield is what we have all
experienced in ceiling loudspeaker systems. We at Soundsphere consider this
is a system using Soundsphere Q-CS loudspeakers
so much better?
The Q-CS provides full-frequency response throughout a hemisphere. Therefore,
spacing of speakers is based solely on the inverse square law. For a 3dB variation
in direct field level at an 8' mounting height, the Q-CS can be spaced 14'
apart. In the 50' x 50' example space, this would require 4 rows of 4 speakers,
for a total of 16 loudspeakers. With a conventional loudspeaker system, even
using 9 more speakers would not produce the same smooth, full-frequency, diffuse
soundfield that the Q-CS system does. If you really want to compare apples
to apples, it would require 121 conventional ceiling loudspeakers with equalization
(to reduce the low-frequency output) to equal the performance of 16 Soundsphere