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Danish Sound Design
Let us
entertain
you
JAMO C 80 SERIES
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C 80 is a series of top of the rang e stereo and surro und speakers from Jamo. Based on the experien ce our develop-
ment tea m gained from creating classic models such as the E 8 and D 5, this seri es of seven speakers draw on the
very latest speaker te chnologies and construction techniq ues.
The aim of this series is to recreate the p erfect concert e xperience - n othing more and nothing less. Regardless of
size, every sp eaker in the series is represente d by the capital C as in Concer t. The sculptural C 80 speakers, with their
exceptional level o f nish and per fectly balanced sound, are a tribute to the great music and lm experi ences that
we all love and t ake such remarkable pleasure from.
As all of the spea kers in t he series are devel oped usin g the same un compromising philosophy, it’s poss ible to
combine them in a number o f dierent way s. Sonically the C 80 f amily is characterised by its gen uinely authentic
acoustic s. The series always conveys highly detailed an d beautifully sound across the entire frequency spectrum .
And selecting a system that includes the unique C 80 SU B will deliver an almost shockingly we ll-dened, dynamic
auditor y experience.
Whether you are looking for the ideal cinematic thrill or the perfect musical exp erience, the C 80 series is guaranteed
to blow your acoustic win dow wide open.
C 809 / C 807 / C 805
Made for serious listening
The agshi p of the C 80 series is the C 80 9. And here we ’re not just talking about another high qualit y speaker from
Jamo. This impressive 3-w ay speaker is the very embo diment of Danish Sound Desi gn – superbly cu tting-edge
sound technology enclosed in beautifully designed cabinets of the highest quality and nish.
One l evel down you will nd the C 807 – an exceptionally melodic sp eaker. The C 807 i s the natur al choice f ront
speaker f or any high-end surround system. Yet it can also deliver a great musical experience performing as a stereo
speaker – either with or without the C 80 SUB.
Although the woofer units have been adjusted in size to t the smaller cabinet, te chnically speak ing the C 805 has
exactl y the same state-of-the-ar t technology armoury as its bigg er brothers. This makes C 805 a rea l best buy if you
want to reproduce genui ne concert and cinema sound in a smaller room, prefera bly backed up by the C 80 SUB.
Jamo C 80 series
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Black ash Dark appl e White (C 803 IW )
Spelt with a capital C as in Concert
Jamo C 80 pa ge 03
C 803 / C 803 IW
Made for more ...
Like the whole C 80 range, C 803 is constr ucted with arch-shaped
sides that, together w ith inte rnal br acing, makes the cabin et
extremely rigid. This ensur es a clean and well- dened reproduc-
tion of midrange detail.
If you want a ful ly integrated sound solu tion then co nsider our
C 803 IW, which is an identical i n-wall versio n of C 803. C 803 IW
is supplie d with both a paintabl e grill and a black front cloth.
C 80 CEN
Screened for the screen
C 80 CEN uses th e same tweeter as the rest of the C 80 range to
achieve optimum vocal clarity, partnered by a pair of the same driv-
ers used in C 805 and C 80 SUR for maximum timbral accurac y. Natu-
rally the C 80 CEN centre speaker is magnetically shielded to avoid
image distor tion, when used in combination with a traditional CRT
televisio n. Thanks to the rubber cradle it is easy to adjust the angle
of the speaker in relation to your listening position.
C 80 SUR
Welcome to reality
If you want to create the perf ect surround sound exp erience it’s vital that the rear speak-
ers generate soun d diusely. The C 8 0 SUR add to this ex perience by per forming as lef t
and right surround speakers to create the perfect interaction w ith the front speaker s.
To improve the per formance of the dip olar arrangement Jamo has developed the
unique eXte nded Bass Resp onse (XBR) system . This allows the C 80 SUR to co mbine
the best from both bip olar and dipolar conguratio ns.
If you wish an even more discreet surround solution you may alternative ly consider
the unique in-ceiling surround speaker SU6. 521K4 from our Custom program. This
would work perfect with e.g. C 803 IW as front speaker.
C 80 SUB
How low can you go?
C 80 SUB is a front and rear-ring subwoofer equipp ed with t wo 254mm/10mm
aluminium cone woofers in a closed cabinet.
The heart of this low frequenc y power plant is a 1800W BA SH amplier,
which sh ould be more than enough fo r both the mos t demanding mu -
sic lover s and serious lm fans everywhere. With C 80 SUB yo u not only
get the traditional options of adjustin g and ne tuning your subwoof-
er’s sound leve l, phase and cut -o frequ ency, you als o get a var iable
boundar y gain compensati on, giving you the opportunity to oset the
harmful eects that a room can have on sound at the lowest fre quency
levels. C 8 0 SUB also features M otional Fe edback (M FB) technol ogy
which results in a very accurate and d ynamic sound.
C 80 SUB also fe atures a 12V tr igger input, so it can be turned on and
o from a A/V receiver/controlle r that has a 12V outpu t, ensuring that
the su bwoofer alw ays will be active when the A/V re ceiver/controller
is turned o n.
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C 803 C 803
Spelt with a capital C as in Concert
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120
110
100
90
80
70
60
50
40
30
20
100 200 50 0 1k 2k 5k 10k 20k
dB (SPL)
▼ O -axis
▲ O n-axis
WaveG uide No rmal tweeter
WaveGuide
WaveGui de refe rs to the uniq ue way Jamo ha s shape d the tweeter’s face-
plate. Th e result is a contr olled sound pattern with a more open and dynamic
reprod uction of sound. WaveG uide makes it easi er to posit ion the speakers
in the room .
Anothe r big challenge is to secure a unif orm disp ersion pattern in the tre-
ble and mid range frequencies . In general, d ispersion gets narrower at high-
er frequencies. Cons equentl y in the area where the mid /woofer and the
tweeter sho uld integrate smoothly, the mid/woofer has a narrow dispersio n
and the twe eter has a wide dispersi on. This problem is solved with th e Jamo
WaveGuide. T he comple tely smooth de sign of the WaveGui de also reduces
dirac tion to an absolute mi nimum. Finally, the WaveGuide increases treble
output in the lower treble range whi ch means the tweeter needs less power for
the same SPL . So, power handling is i mproved and distor tion is reduced.
Jamo Tech platforms
The WaveGuide results in a uniform treble dispersion pattern fro m
10kHz all the way down to the critical x-ove r point at 2kHz and thus
secures a s eamless transition to the mid/woofer – both wh en listening on and o a xis.
125
120
115
110
105
100
95
90
85
80
75
70
Overpl ot
60.0 100.0 1000.0
dB
No rmal face plate DTT
DTT (Decoupled Tweeter Technology)
DTT* (Decoupled Tweeter Techn ology) is a remar kable mounting system
specially developed by Jamo.
One of the biggest challenges when designing speakers is preventing unwanted
cabinet vibrations from clo uding or colouring the sound. High frequenci es are
particularly susceptible. This problem is solved using the ingenious Jamo DTT.
By deco upling the t weeter from the rest of the loudspeaker, vibrations trans-
mitted from the front bae to the tweeter are reduce d by more than 20dB
resulting in an uncommonly det ailed and realistic re production of high f re-
quencies.
* Patent pen ding
Dieren ce between vibrations in a normal face- plate and vibrations in a face-plate employing Decoupled Tweeter technology.
Jamo C 80 pa ge 05
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100
95
90
85
80
75
70
100 200 500 1k 2k 5k50
dB (SPL)
Cent re-Plug Normal sp eaker unit
Jamo Tech platforms
Centre-Plug
The Centre- Plug replaces the traditional dust cap, mak ing the cone both lighter
and mo re responsive, whil e also cool ing the voice-coi l, resulting in a highe r
power handling and a stable sound reproduction when play ing loud. The de-
sign allows i ncreased power-han dling capabilitie s along with a more unifo rm,
precise and dynamic reproduc tion of sound.
The Centre-Plug also prevents pote ntial break-up points whe re the dust cap
would have been glue d to the cone. In addition, it prevents over- and under
pressure b ehind the dust cap when the cone moves back and for th.
The advantage is more dynamic and precise so und reproduction.
Sound pressure level f rom a speaker with Centr e-Plug compared to
one without, when playing at high p lay-back level.
dB
25.0
20.0
15.0
10.0
5.0
0.00
0.50
1.00
1.50
dB
25.0
20.0
15.0
10.0
5.0
0.00
0.50
1.00
1.50
2.00
2.50 msec
MLSSA
1k 2k
2.00
2.50 msec
MLSSA
1k 2k
HCC (Hard Conical Cone)
The HCC technology (Hard Conical Cone) enables the driver to reach far beyond
midrange frequ encies before any si gnicant cone break-ups occur. The mate-
rial’s rigidity and the membrane’s conical shape ensures the unit creates clear
and detailed soun d with ver y little distor tion, even at high sound pressures.
This combines with the natural rubb er suspension, which eectively prevents
vibratio ns from travelling back to the diaphragm, the result being a ver y well-
controlled diaphragm that oper ates without break-ups up to 4kHz -well beyond
its working range.
Conventiona l speakers don’t fare so well!
Cumulativ e Spectral De cay IEX Frequen cies - Hz
Cumulativ e Spectral De cay IEX Frequen cies - Hz
Jamo HCC operates without break-ups in critical areas.
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Motional Feedback (MFB)
C 80 SUB features a Motional Feedback circuit. When a large woofer has been
abruptly driven by a strong sonic impulse such as an explosion or a timpani,
the woofer co ntinues moving after the impulse stops . The MFB circuit co m-
pares the impuls e to be reproduced with the actual movement of the woofer.
If the woof er moves unnaturally in relation to the input signal, the MFB circuit
corrects the error before it becomes audible. Furthermore, the MFB makes it
possible to equalize the subwoofer to go deeper without losing any precision.
The result is incredib ly accurate, deep bass , full of punch and dynamics.
Motio nal Feedbac k (MFB)
0
Impulse r esponse [V ]
Time - mse c.
Wi thout MFB W ith MFB
Boundary Gain Compensation
The Boundary Gain Compensation lter in C 80 SU B compens ates for the
room inuen ce at low frequencies, as any room amplie s the lowest frequen-
cies. The magnitud e of the room’s amp lication depends on the roo m size
and where the sub is positi oned in the room – normally it increases the closer
the sub ge t to a wall. This can result in too hi gh a bass level fr om approx.
60Hz and increasing downwards – i n the range between 20 - 30Hz it peaks
up to 5 - 10dB in an average room!
At rst this could sound really impressive, b ut the sound quickly begins to
sound ‘boomy’, especially when listening to music, and rathe r annoying. So
the Boundary Gain Compensation ensures a very linear in-room bass response
and gives you more exibility when it comes to placement and choosing your
favourite listening position.
Bounda ry Gain Comp ensation
10.0
SPL/Vo lts [0.33 oct]
100.0
O On
Active Impedance Control (AIC)
All C 80 mid/woofers feature Acti ve Impedance Control (AIC), an innovative
extension of existing techniques to reduce distor tion in electrodynamic loud-
speaker dr ivers.
The AIC makes the impedance more linear in the mi d and high frequenc y
range. AIC also increases the sensitivi ty and tota l SPL in the upper range of
the driver.
30
25
20
15
10
5
0
200 500
Impeda nce [Ohm]
1k 2k
Frequen zy ]Hz]
2k 10k 20k
dri ver with AIC driver with out AIC
AIC - Act ive Impedanc e Control:
The eect of AIC is a clearer midrange with a markedly reduced ‘roughness’, es-
pecially noticeable on vocal reproduction . In gures, this amounts to a reduc-
tion of thir d-order harmonic distor tion of around 6dB (i e a 50% reduction).
-35
-40
-45
-50
-55
-60
-65
200 500
[dB]
1k 2k
Frequen zy ]Hz]
dri ver with AIC driver with out AIC
Harmon ic distort ion
When a voice coil is mov ing in and out of a magnet gap, it changes induc-
tion. When the coil moves inward, the induc tion increases and vice versa.
This causes the current from the amplier to be modulated, creating ver y
audible distortion.
Furthermore the current owing in the voice coil modulates the magnetiza-
tion of the magnet assembly which also causes distortion of the current.
By using an extra coil, placed inside the voice coil with opposite polarity to
the voice- coil winding, the induc tance variation and the ux mod ulation can
be signi cantly counteracte d.
Compared to the conventional conductive rings in a magn et system AIC has
the ad vantage that it is signi cantly bet ter at higher fre quencies i. e. in the
midrange (on voices) where distortion is most audible to the human ear.
Jamo Tech platforms
Frequen zy ]Hz]
Jamo C 80 pa ge 07
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w w w . j a m o . c o m
Danish Sound Design
Model C 809 C 807 C 805 C 803 C 80 CEN C 80 SUR C 80 SUB C 803 IW SU6 .521K4
Placement FRONT
• • • •
•
Placement CEN
• •
Placement SUR
• •
Placement SUB
•
System 3-way bass-ree x 2½-way bass-reex 2½-way bass-ree x 2-way bass-reex 2-way bass-reex 2-way dipo le Closed 2-way closed 3- way dipole/bipole
Woofer mm / in 2 x 180 / 7 180 / 7 155 / 6 180 / 7 2 x 155 / 6 2 x 155 / 6 2 x 254 / 10 180 / 7 165 / 6½
Midrange mm / in 180 / 7 180 / 7 155 / 6 38 / 1½
Tweeter mm / in 25 / 1 DTT 25 / 1 DTT 25 / 1 DTT 25 / 1 DTT 25 / 1 DTT 2 x 25 / 1 DTT 25 / 1 DTT 25 / 1 Dome
Power W long / short term 200 / 400 180 / 360 160 / 320 125 / 250 160 / 320 160 / 320 125 / 250 60 / 120
Sensitivi ty dB (2.8V/1m)(2.8V/1m) 89 89 88 87 88 87 87 90
Frequency rang e Hz 30-24,000 35-24,000 40-24,000 45-24,000 70-24,000 65-24,000 20-200 45-20,000 60 -22,000
Impedance Ohm 6 6 6 6 6 6 22k 6 4-8 switc hable
Rated output W 1800
Weight kg / lb 33.6 / 74.1 28.3 / 62.4 18.5 / 40.8 9.9 / 21.8 11.6 / 25.6 7.5 / 16.5 25.0 / 55.1 2.8 / 6.2
Dimensions (fra me, bae, cabinet)
mm / in (H x W x D)
1157 x 252 x 428 /
45.6 x 9.9 x 16.9
1007 x 242 x 406 /
39.6 x 9.6 x 16.0
877 x 201 x 347 /
34.5 x 7.9 x 13.7
380 x 225 x 341 /
15.0 x 8.9 x 13.4
212 x 501 x 281 /
8.3 x 8.9 x 13.4
293 x 286 x 181 /
11.5 x 11.3 x 7.1
447 x 390 x 432 /
17.6 x 15.4 x 17.0
400 x 270 x 85 /
15.7 x 10.6 x 3.3
342 / 13.5
Dimensions (ho le)
mm / in (H x W x D)
347 x 225 x 110 /
13.7 x 8.9 x 4.3
307 x 184 / 12.1 x 7.3
Back box size
litre / in
3
14 / 854 23 / 1400
Optional RIK RIK10.5LW
Finish
Black ash,
Dark apple
Black ash,
Dark apple
Black ash,
Dark apple
Black ash,
Dark apple
Black ash,
Dark apple
Black ash,
Dark apple
Black ash,
Dark apple
White (paintable)
and Black grill incl.
White (paintable)
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