Kenwood KL-7080 User manual

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The rnulti-channel amplifier is an epoch-making sound reproduction system. An electronic crossover re-
places the conventional LC network. Three separate main amplifiers are used for each stereo side, left
and right, instead of a single amplifier in the conventional full-range system. ln short, six main amps
instead of two are employed in a multi-channel amrlifier system to produce the ultimate in clear, truly
distortion-free stereo sound.
Kenwood now offers a Full-Range-Multi-channel Speaker system in three models, the KL-7080, 5080 and
4080. They are all compatible with any conventional stereo system, as well as the latest multi-channel
amplifier system. What's more, they're capable of reproducing spectacular sound. These are speaker
systems that defy obsolescence, and which you'll treasure for many years to come because of thei!.
high excellence and performance.
E LECTRONIC
CROSSOVER NETWORK WJ:T'-
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A Produet of TRIC ILICTRONICS, thlc., Tokyc, Japan

GOilHEGTIHffi THRTflIilILS Nil[l SILTCTOT SWITSH
,1" SEPARATE input terminals
These six input terminals are used for making
eonnections to the three main amplifier outputs
of either the left or right side of a multi-channel
amplifier system" tsy connecting another identicel
speaker system to the nnain amplifiers of the othe!"
s ide, m u lti-ch a n nel stereo sou nd ca n be en joyed .
LOlV-Connect the output of the Low-range amp-
lifier to these two terrninale.
lvllD-Con nect the output of the M id -ra nge a rn p"
Nifier to these two terminals.
HIcH-Connect the output of the High-range arnp-
lifier to these two terrninals.
low-range amplif iers a nd their respectivs
speaker terminals. As for the mid-range ampli'
fier and its speaker terminals, reverse the
polarity by connectrng plus to minus anei
minus to plus. This, it must be emphasized,
applies only under ideal room acoustic con-
ditions. Otherwise normal polarity conneetions
may produee better results. To test your own
accustic conditions, exBeriment by observing
proper polarity eonneetions for all three ampli-
fiers, and settle on the mid-!"ange connsftlon
which nesults in the best sound.
2" SELECTOR switch
Th is is a 4- point swite h wh ich con neets th*se
speakers to the multichannei amplifier systern wheqr
set at SEPARATE position, or to a ecnventionai.
full-range amplifier or receiver at CLEAR, NORilVIAt
and SOFT positions. in the latter three pcsitions,
the amplifier output is fed to a built-in,3-way,
LC crossover network, a nd sou nd ca n be adjusted
to suit your preference as follows:
At CLEAR position-slight emphasis of highs.
At NORMAL position-ideal, flat, hi=fi response.
At SOFT position-slight attenuation af mfrd-renge
and highs.
It is im porta nt to sbserve the f ollowing when
making conections ts the three rnain amplifiers.
A" For systerns with a crossover slope of SrtBrt.
OCT or LSdBlOCT, b€ sure to observe polari-
ty in connecting all three arnplifiers to their
nespective speakeltermrnals. Csnnect plus to
plus and n'r inus ta nrinus in sue h a case"
B. lf the crosscver slope is l2d.BrrOCT, best
sound is obtained'vrrhen plus iis connectec$
to plus and minus to minus for the high anC

3, FU LL-RANGE tnput terminals
These two input terminals are used for rnaking
connections ts either the left or right channe| of
any conventional, tull-range stereo arnplif ier or
receiver" By eonnecting another identical speaken
system to the output of the other ehannelu fulN"
range stereo sot-lnd can be enjoyed. Be sLlre to ob"
serve polarity when rnaking conneetions, Always
connect plus to plus and minus to minus for
eonventional full"range amp$ otr receivers"
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The erossover frequencies used, as well as
proper level adjustments of the various ampiifiers
are very impontant to get best results in multi- ,
ehannel stereo openation. lt is recommended tnal: Q)
(1} Crossover frequencies of approximately 57O-
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MODEI.
&" RECHECK SPEAKER CONNHCTIONS
Be sure to recheck all speaker conneetions
before operating th is spea ker systenn. Shos'ts str
rnisconnections may damage the speakens.
CAUTIO{\: lt the tow-range amplifier output is
miseonneeted to the HIGH or ndlD speaken csn-
nectlng terminals, speaker damage will be ntrmost
certa in !
8O0Hz /12dB,IOCT and 5,000H2 / \zdgIOCT
be used.
The levels of the various amplifiers should
be adjusted very earefully to obtain the best,
most natu ral overall !'esponse for the entine
audio range"
K r--5080 K L-4080
l\4OUNTEn SpEAKERS j t 5" free-edge type woofer x 'n
ji 5" cone type mid-range x 'l
I
I Horn type high-mid-range x 'l
i Horn tvpe tweeter x 2
l
I 1 -114" metal cone type super
l
1 t*eetet x 1
-l zr*r*u--u-Jgu *;e*"n]*; ; 1
6^112" cone tvpe mid-range x 1
Horn type tweeter x 2
1-114" metal eone tVpe super
tweeter x 1
Damped pipe duct bass reflex type
70 watts
70 watts
25 watts
25 watts
I ohms
102 dB
30 H z ta 22,O00 Hz
600 Hz, 5000 Hz, 10000 Hz
12 dB/oct
Builtin 3 step tone selector
Multi-channel amplif ier system
eon nection terrni nal s.
570 Hz*800 Hz. 5.000 Hz
12" free-edge type woofen x 1
5-118" cone type mid-range x l
2-314" cone type tweeter x 2
Damped pipe duct Lrass reflex type
50 watts
50 watts
20 watts
20 watts
I ohms
101 dB
35 Hz to 20,000 Hz
800 Hz, 5,000 Ha
1 2 d B/oct
Builtin 3 step tone selector
Multi-channel amplif ier svsterrl
conneetion tenminals.
570 Hz - 800 Hz, 5,000 Flz
14-112"(W) x 24-112"(H) x
11-5/8"(D)
E NCLOSU R E
TvTAXIMUM INPL,,T
N4U LTI.CHANN E L
LOW
ivl lD
HIGH
IMPEDANC€
SENSITIVITY
FHEC}UENCV RESPOI\JSH
CROSSOVER FREQUENCY
CROSSOVER NETWORK
SPECIAL FEATURES
MULTI.CHANNEL
AMPLIFIEH SYSTEM
CROSSOVER FREAUENEV
D IMENSION
I A.orstic suspension type
J
i eo watts
8O watts
30 watts
3O watts
8 ohms
102 dB
25 Hz to 22,000 Hz
600 Hz, 2000 Hz, 5000 Hz,
10,000 Hz
12 dB/oct
Builtin 3 step tone selee tor
Multi-channel annplif ier system
connection terminals.
57A Hz*800 Hz, 5,000 Hz
16-314"{V\J} x 25"{H} x 11"(D) '15"(W) x 25-112" (H) x 11-5/6"{D}

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€) 1970- 10 Printed in Ja pa n850-0584"00 (ft)