Product Datasheet/Brochure
THX
®
CERTIFIED SUBWOOFERS
Two KEF Architectural subwoofers models, when combined with the KASA500 Audio System Amplier, deliver THX
®
certied bass performance. For THX
®
Certied Select (rooms up to 2000 cubic feet), one KASA500 is used, whilst
two KASA500 are needed for THX
®
Certied Ultra (rooms up to 3,000 cubic feet). The diagrams below show the
number of subwoofers required, as well as the wiring and KASA500 settings.
X.X.4/X.X.6
X.X.4/X.X.6
X.X2/X.X.6
45º (max)
0º (overhead)
15º (min)
45º (max)
15º (min)
SETUP AND WIRING EXAMPLES
The following examples show some of the ways that KEF Architectural products may be used in your project. Included
are wiring diagrams and the product settings required for each example.
WIRING NOTES
These types of wiring are used in the following examples. Please note that impedance will change depending on the
wiring style as well as the type and number of speakers used.
Series Parallel Series Parallel
Ci3160RLb-THX SELECT/ULTRA
Ci200QSb-THX SELECT/ULTRA
ACTIVE SUB/SAT SYSTEM 1
ACTIVE SUB/SAT SYSTEM 2
From Stereo Amplifier
From Stereo Amplifier
PRODUCT SETTINGS
KASA500, as well as some Architectural subwoofers, have mode selection switches. The modes required are found with
each example. The following icon shows the switch when BYPASS is selected:
NOTE: When Ci200QSb-THX is used with KASA500, ensure the CROSSOVER mode is set to bypass. When powered
by a standard amplier that does not feature a crossover, set the CROSSOVER mode to ON.
KASA500
KASA500 has DIP switches on the rear to adjust the line output (high pass lter) and the internal DSP (for KEF
Architectural subwoofers). Please contact KEF Technical Support, or consult the DIP switch chart for advice on the best
settings for your particular KEF speakers and subwoofers. Also note that KASA500 may be used in place of any ‘generic’
stereo ampliers in these examples.
BypassOn
From Stereo Preamplifier
KASA500
KASA500 SETTINGS: Ci200TRb INPUT MODE
Line out EQ
Pass Through
Stereo Input
Mono Input
2 Channel
Bridge
Mono Stereo
KASA500 SETTINGS:
Line out EQ
Pass Through
Stereo Input
Mono Input
2 Channel
Bridge
KASA500
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line output Line input
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line output Line input
From Stereo Preamplifier
KASA500
STEREO POWER
AMPLIFIER
KASA500 SETTINGS:
Line out EQ
Pass Through
Stereo Input
Mono Input
2 Channel
Bridge
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line output Line input
Ci200QSb-THX CROSSOVER
ON BYPASS
PASSIVE SUB/SAT SYSTEM (Ci200TRb STEREO MODE)
STEREO POWER AMPLIFIER
Ci200TRb INPUT MODE
Stereo
Mono
PASSIVE SUB/SAT SYSTEM (Ci200TRb MONO MODE)
STEREO POWER AMPLIFIER
Ci200TRb INPUT MODE
Stereo
Mono
PASSIVE SUB/SAT SYSTEM (STEREO SUBWOOFERS)
STEREO POWER AMPLIFIER
Ci200QSb-THX CROSSOVER
ON BYPASS
From A/V Processor
KASA500
KASA500
KASA500 SETTINGS:
Line out EQ
Pass Through
Stereo Input
Mono Input
2 Channel
Bridge
KASA500 SETTINGS:
Stereo Input
Mono Input
2 Channel
Bridge
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line output Line input
Line out EQ
Pass Through
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line input
From A/V Processor
KASA500
KASA500 SETTINGS:
Line out EQ
Pass Through
Stereo Input
Mono Input
2 Channel
Bridge
KASA500
KASA500 SETTINGS:
Stereo Input
Mono Input
2 Channel
Bridge
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line output Line input
Line out EQ
Pass Through
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line input
UNI-Q BENEFITS
KEFs signature Uni-Q Driver Array is a point source that places the tweeter at the exact acoustic centre of the
midrange driver. The unique benets of Uni-Q makes it the ideal solution for custom installation:
SIT ANYWHERE
Equal directivity sound of up to 160° delivers pinpoint imaging and eortlessly natural performance across a huge
listening area, ensuring everybody shares the same experience.
IN-CEILING LCR
By installing a KEF ceiling speaker as close to the front wall as possible, all listeners will hear the sound as if it is coming
from the screen, rather than from above.
DOLBY ATMOS FOR ALL
The huge o-axis response ensures that everybody in the front row receives all the information from the rear Atmos
channels, and everybody in the back row experiences everything from the front row.
HIGH OUTPUT ACTIVE SUB/SAT SYSTEM
HIGH END SUB/SAT SYSTEM
From Stereo Preamplifier
KASA500
STEREO POWER
AMPLIFIER
KASA500 SETTINGS:
Line out EQ
Pass Through
Stereo Input
Mono Input
2 Channel
Bridge
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line output Line input
Line input
From Stereo Preamplifier
KASA500
KASA500 SETTINGS:
Line out EQ
Pass Through
Stereo Input
Mono Input
2 Channel
Bridge
Ch 2+
Ch 2-
Ch 1+
Ch 1-
Line output Line input
Line input
STEREO POWER
AMPLIFIER
SINGLE SPEAKER SOLUTIONS
KEF has two ways of bringing phenomenal sound into situations where space is at a premium and only a single
speaker will t.
DUAL STEREO
The Dual Stereo special application loudspeakers feature two tweeters and a dual voice coil woofer. Stereo soundstage
is created by combining the dispersion eect of the Tangerine Waveguide with asymmetrical tweeter placement, as
illustrated below.
STEREO TO MONO TRANSFORMER (CiTR-SM)
The CiTR-SM converts a stereo amplier signal into mono, allowing any KEF Architectural loudspeaker to deliver all the
music from a single unit, with all the room lling benet of Uni-Q.
SOUNDLIGHTS
KEF Soundlights are specically designed to mimic the aesthetics of installed lighting.
SOUNDLIGHT SUB/SAT 1 (Ci200TRb STEREO)
RECOMMENDED HOME THEATRE
SPEAKER PLACEMENT
Due to the impressive o-axis response of Uni-Q, KEF recommends slightly dierent speaker placement for home
theatre, designed to cover the whole listening area rather than cater for one single position (or provide subpar sound
for all positions).
Front speakers should be positioned as wide as the seating area (with clearance from the side walls). The rear, as
well as any Atmos channel speakers, should be positioned in line with the front speakers.. Surround speakers should
be positioned in line with, or just behind the Main Listening Position.. Both Surround and Rear speakers should be
positioned above ear height to assist in diusing ambient sounds throughout the room.
For Dolby Atmos, it is important for the overhead speakers to be positioned correctly, so that they work with the
other speakers to faithfully deliver the sound eects. KEF recommends the following placement, measured from the side
prole of the Main Listening Position, and still in line with the Front speakers. Note the congurations for the number of
overhead speakers being used. Measure directly overhead from the middle of the listening area, front Atmos speakers
from the front row, and rear Atmos speakers from the rear row.
Wiring Style
Speaker 1
(Series 1)
Speaker 2
(Series 1)
Speaker 3
(Series 2)
Speaker 4
(Series 2)
Total
Impedance
Series 4Ω 4Ω - - 8Ω
Series 8Ω 8Ω - - 16Ω
Parallel 4Ω - 4Ω - 2Ω
Parallel 8Ω - 8Ω - 4Ω
Series
Parallel (w/sub)
8Ω 8Ω 6Ω - 4.36Ω
Series Parallel 4Ω 4Ω 4Ω 4Ω 4Ω
Series Parallel 8Ω 8Ω 8Ω 8Ω 8Ω
FRONT LEFT
CENTRE
(ABOVE/BELOW/BEHIND SCREEN)
FRONT RIGHT
ATMOSATMOS
SURROUND
RIGHT
SURROUND
LEFT
REAR LEFT REAR RIGHT
SOUNDLIGHT SUB/SAT 3
STEREO POWER AMPLIFIER
COMMON SYSTEM IMPEDANCES
These are some of the most common system impedances when using dierent wiring congurations with
KEF Architectural speakers.
PLEASE NOTE: Wiring diagrams are for guidance and illustration only. More speakers may be added, but you
MUST ensure that the resulting impedance is suitable for the amplication you are specifying.
STEREO POWER AMPLIFIER
SOUNDLIGHT SUB/SAT 4 (Ci200TRb MONO)
STEREO POWER AMPLIFIER
Ci200TRb INPUT MODE
Stereo
Mono
Architectural Speakers
2020
ATMOSATMOS
STEREO POWER AMPLIFIER
Ci200TRb INPUT MODE
Stereo
Mono
SOUNDLIGHT SUB/SAT 2 (Ci200TRb MONO)
STEREO POWER AMPLIFIER
Ci200TRb INPUT MODE
Stereo
Mono