Kenwood KX-5010 Service Manual
TEST
USER
This sophisticated two-hcad
retrc
deck ollers yet
dcncc of Kenrvood's
world domination.
may lack the
pcrformance
REPORT
furthcr cvi-
plan for
Thc KX-5010
convcnience and
benefits
n
hich
cas-
third head confers, but Kenwood
have seemingiy
extracted the
drop of performance
Frc
5,A
o
o
l
o
=
58
;
o
;
g
U
o
i
G
PFE-BEC
IYPE I
rvpr rr
FIG
last
from this
two-head
A manual
eschewed
bccn
automatic
rvhich adjusts
to suit
lcvel
Signals
a
recordcd
current reduced
sensitivity
internal
3150
FFE0UENCY
FFEOUENCY
mechanism.
fine bias
in
tape calibration
the applicd
the
4OOHz
at
turn and
in
until
falls
level
replay
(40H2l0lv)
(Hz)
control
favour
desired
and
the
zero. The
to
is also ad-
of an
systcm
1OkHz
the
relative
justed
as a further
Dolby encode/decode errors.
Blank
scan and direct
search, 1O-second intro
facilities arc included as further
aids to convcnience. All thc Dolby
circuits are prescnt and thcrc arc
even
a couplc of extra sockets
provided
for mic
broad 16-segmcnt record level
(with
meter
anotherpoint
peak
in the 501 O's favour.
This deck scored vcry high
has
marks
in its sonic performance.
I'm
convinced that the
bias
tapc.
are
bias
port wow
tion noisc, and high quality rc-
cord/rcplay electronics arc rc-
sponsible. Many of thc other
decks imposed a slightly muffled
or woolly
whereas the Kenwood allowed all
recordings to
and reduccd
hue,,vcr thc mu:ic
TEST
Vow (l-10H2, unwtd): A.092o/o
Pcek
Peak Flutter
Absolute Specd Error:
S/N Ratio: 56.1dB 61.CdB 58.ldB
MOLllSHz:
SAT1ok:
THD(OVU):
IMD
Channel
Meterreading(rr250n\Vb/0:
Input Scns
Output
Serial
(10-l00Hz): C.065%
Tapc
(OVU): 2sdB
Scparation
(for
OVU):
(r
OVU:
Numbcr:
TECHNICAT ANATYSIS
play trim
\Vith
controls
6l0Oproduced
in their null
the record/replay
Type I and
both
tapes. This
is
clearly
guard
against
program
scarch
inputs. Thc
hold option) is
low trrns-
modula-
'breathe'
in a very
RESULTS
Type I lI IV
+6.8d8
-4.2d8
-43d8 -{ldB
(lkHz): 65dts
tA.79ok
+3.7d8 +3.8d8
3.8d8 +2.3d8
-42dB
-42dB
-l1dB
.14.7mV
568rnV
81002214L
and fine
position,
a I toidB'sting'
response
Il tEC Reference
evident
natural fashion.
Maxell's
ideal m:rtch
recording
new UDI
in the Type
of Chris
Dance offcring
buoyant
percussion
rhythm and
as thc original.
were niccly projected
lance held right
Recordings
\talwarl
and
cassette
SA possetsed
articulate treble, quite
recording in
Furrhcrmore. the
floor of this
supcr-lorv hiss tapes
Chromc Extra
great success.
Kenwood
all-rounder in the KX-5010
is heartilv recommended.
Value rating
5b
Fig
Type
Nevertheless,
was ablc
rhe IEC II Ref
is
as
I response.
to modify rhe response of
+5.2dB/-7.1d8 at 20kHz
for the mort
formulations
CDXII).
was the
noise recorded
II position, a
-69.5d8
-75.5d8
is due to the fact that NAD
This
relay for
solid-state electronic switch-
Fig 5a shows
some capstan
contriburing
tota[.
bands
rate speed
+1dB
bias
the
from
sufficient
Typc Il
Memorex
pressive
A-weighted
Type
creased to
and
€mploy a
than
ing.
but
9Hz)
in
ol
ro the peak
flutrer
boost high
proved
I slot. ;
Rea's le:,
the san::
much
sparklir.-
Voci:
sib:-
and
at bay.
made on
machinc enable:
TDh':
vcrl'
a
ain
unlike:
very low noi-:
such as BASF
fac:
II to bc used s'it:
have produced a iint
whic:
*****
slighdy
the
the
tape to the tune oi
with Dolby
Very
46Hz and 41Hz
^t
'fuzzr"
61Ci
NAD
deviant
(including
Most im-
low
-61d8
in the
figure
with Dolby
C.
head rather
the
very little dritr
(.{.5H2
wow
0.085 percenr
prominent
variations.
in-
-
-
oi
B
USER
Launched
other,lO0
ko's
D4OO
simplifie
costlier
is not
fascia
bluc
pleasantll'
Dolby
54
REPORT
to complement
series separates,
tape deck
d trvo-he
D600.
fluorcscent
attractivc.
HX
is actually a
ve rsion of the
ad
Thc black
very inspiring, but its
Pro is included
Nik-
plastic
display
standard, but
are also
regardlers oI
bcing used
the
digit clcctronic counter also
four
operates in a real-timc
so cas('\ manual
Thc principal
is
trols
across the fascia ofthe player,
strip
underneath three rotarv controls
as
both Dolb,v
linked to an mpx
whether a tuner is
or not. Anyway,
treck locatit,n.
transport con-
are located in a horizontal
B
and C
filter,
the
mode and
cater for fine
that
balance and
ment.
ber-coated
thc first two
and
centre
Tape
thcre .rrt' n,r
track krcation facilities.
or
ermore, the SATI0k
gest that the heads
not able
levels.
record level
A11 these
to pror
(12 o'clock) position.
selection is automatic,
tast cuc-and-r,'view
ro acccpt high treble
Indeed they
bias, L/R
adjust-
controls are rub-
ide an eesv grip
are detcnted in
Furth-
figures sug-
in this dcck are
weren't.
the
but
Even the brighter-sounding
ferrics such as
duced a distinctly thick and lack-
lustre copy of the original. Musi-
casscttcs as wcll as recordings
lacked
oPenness.
Speed
p.rrt made
solo guitar
TDK
edge,
bite and a scnse
variations
the
pitch
recordings slightty
AR-X pro-
the trans-
in
of piano or
insecure
tions
weakening
of the music.
Oddly enough.
though the measured hiss rr'a.
iow. I still found
quire
to be morc obtrusive than usua
with
Typ. I formulrtions.
Obviouslv the noise figures do no:
rcflecr the
though thc percussion from
disrributit'n
Sony UX-S added a littlc morr
Nick's Roorzs on Fire was oddl:
derached from thc resr
soundstage, her
bloated and soft
There really
gained by
be
tapes, for the
+ldB or-r its meters.
above
another
of
competitiVcness
old-fashioncd
factor
voice slighth
focussed.
is no advantage
twitching to meta-
D400 overloads
that limits
of
design.
Valuerating
NEW HI-FI SOUND
NOVEIV]BER 1
the founda-
tape noisr
of
hiss.
Stevir
of th;
This is
thr
this rather
to
*
TEST
-1I
o.,ns
lm-
ldtJ
: th.'
in-
:r-B
AD
thc'r
tch-
lrifi
Hz
cent
lent
lHz
ns.
levels were achieved
TEST RESULTS
Peak Vow
Pcrk Fluttcr
Abrolutc Speed Error:
\/N
MOL3l5Hz:
SATlOk: 1.8d8 l.ldB
THD
IMD {OVU):
ChrnnclSeparrtionttLHzl: ZodBl
Vctcr rcading.,, 250nvb/m: 4dB
lnput
Output,,,
Serial Number: 8O89SO4I I
TECHNICAT ANALYSN
Ke nwood's
offset by 4dB
250nVb/m) so that
pushed into the
:
=48
;
932
o
!
TYPE I
U
o
i- IYPE I1
tr
61
FHEOUENCY
level is not acrually
might be expected.
high frcqucncics by modifying the
rccord EQ curvc. It's rathcr like
srr[t-.lioPrn*
compression
lil/alkman
O:
should
critical recordings I might add.
treblc headroom available from
l-lCHz. un*tdr:
t
r
IC-l00Hzt: 0.C88'.
Trpc Typc I ll lV
Rrrio: 55.5(lB 0O.4dB 57.9d8
{OVU):
+5.4dB
+1.ltdB +4.9dB
.'IJB
4IdB
zadB 2?dts
-
\ens
r for OVL r: b].5mv
OVU: 465mvl
broad
meters are
or so
even
red, the recording
as
Very
lowioise
Other featurcs include a 12dB
However,
i,,r tapc dcckt.
circuit for in-car or
listening. This facility
not be employed for
the
relatively Iorr.
this tleck means that the full
bcnelir ol premium ierri..
to
USER
-{aving
,:ccess with
tape
--i3C
::ded
=::ective
.;uipped
,-,r' heads,
.ophi*tic.rte,l
:..'th
'pL'rxtion.
REPORT
achicved
their
deck,
to launch a more cost-
version. The 6100 is only
with tu,o hard
but its logic
There's cven x
considerable
N{onitor
Scries
NAD have de-
Permal-
control is
:rnd posit ivc in
rcmotLl
for armcl'rair opcration.
control
The grey and
stl,ling also matches
6300, but so
to manually
vcry
functional
that of the
long as you rcmcmbcr
select thc desired tape
type, thc 6100 is easy enough
use. NAD
combination of Dolby HX
and D,vneq tuning svstems.
have retained the
Pro
The
latter developed by T,rndberg
-
prcVr'nl\
rapid slturati,,n.rr
unlikcly
Furthcrmorc,
plie .l biar
Iy, most Type I
very bright
ed
NAD's Plry Trim fcaturc is
t<>
absolutely
anamolies are not to upset the
Dolby replav chain.
NAD have set up the deck for
Maxell UDI.
realised.
bc
unless thc ap-
ruas
incrcl'cd
tuIt-icicnr-
recordings
and
inr,aluable if
This ferric tape gave
splatterl..
such
0.015".
.C.4"o
-2.ldtt
-42d8I
(rel
when
high
sound-
I
Type II
I
NR
by
I
This is
one that was dominated by a sharp
tapes,
improving ro
and - 74.7dB with Dolby
B)
fabulous
a
increase in noisc around 18
20kHz; midband n,rise
+qJB
I
I
*
78
cally
war dominaied by sccond harmo-
nic
amplifiers.
THD
products
trr
ltypically
Kenwood
into this oddity, for it is the heads
that
usually
distortion.
Anyway thc
highlighted in Fig
to
31 50Hz
driving
'wobbles'
capstan
and 18H2.
as
discrete flutt"r
(0.047
More
percent)
a sparkling and
rcndition of Stevie Nicks' Roozzs
Firt, thc pcr.tts.i.n
On
the
behinJ
cingly. The sound of
generally punchy
r
The
and the pleasing
images was quite audibly apparent
despite the imperfections
transport mechanism.
i.
werc altogcther more
Music now sounclcd
.pen.
without
fcrcd by lesser machines.
HF
possible with this deck. but
overall performance
little
Value rating
ery r.rctile prcscntation
Recordings
detliled .rnd crprc.sir.'
thc murfled qu.rlirl
High quantitv
mixed.
x'ith selected
-60.4d8
-68.SdB
result, though
-79dB.
0.89
from the
should look
give rise
the bulk of
to
very
low drift
4a
by
signal, {lanked
ar 6Hz,
worrying are the
signais
and
121H2.
very
ro.rlisr rcry
this deck was
and bright.
solidity of stereo
on TDK SA
successful.
reproduction i'
is still
without
(Dol-
C.
was
typi-
pcrccnt)
replay
thc
sharp
by
12Hz
nL loff.
posltrve
J.rne inq
ct,nrin-
of the
(II)
plc:rs,rntlv
'Lrf-
just
****
to
is
its
a
rdargh.
\\.as
oise
sual
ons.
)
not
torr
cyi e
ldlr'
the
h tlv
eto
etal
,ads
is is
thc
hcr
*
1e8e
I
Fc68
\EW
HI-FI SOUND
NOVEMBTR
1989
FFEOUENCY
TEST RESULTS
PcakVos
tl-llHz.unwtdt:
(
Flutter
PcaL
Absolutc
S/N Rrtio:
MOLI l5Hz:
SATIOk: -.1.6,18
THDIOVUT:
IMD
Chenncl
Metcr
Input Sens
Output..,
Serial
lC-ICCH/):
Speed trror:
Tapc Tlpc
(OVUr:
Scprr.rtion
rerding
(for
OVU):
OVU:
Numberr
I II IV
51.edB 57.qdB 55.lJB
5.cdB 2.adB
45JB
_28d8
t lkHzt: SodB
r
250nwb.
TECHNICAL
good example
a
is rlot
This
modern
clea.rly
6a
wow and flutter,
of
level
of higher
tude
variations broadening
speed
cassette
highlights
deck design.
rate
!.10""
0.0'50.
l.o'.
-:.JdB
5.2d8 l.JdB
_]]JB
4OdB
I'i(IB 55JB
m:
tdB
'
9C.6mV
+1f nrv
1CC8C9
AI{AIYSIS
of
a debilitating
(4 to
Fig
a multi-
2OHz)
the
31.5AHz centre
I
this appears
eccentric capstan.
I
flutter is linked
I
I
]
l
I
I
I
I
I
I
I
I
i
This flutter is
hum.
6a.
Fig
in
In addition.
an absolute
duced
percent
*1.6
musicassettc replay
limited to a
b<,,th Type I and ll
whilc
replay responses
above i5kHz
null
position
biased for IEC
would
suffer
if nor corrected.
Headroom
with
larly
frequencies, where
*
setinat
merers).
5dB
signal. Much
The
from an
higher
to originate
to a 50H1 mains
clearly
rhe transport
spccd error o[
(4.84cm/sec).
response
poinr of 6.5kHz
-3dB
recordz
cut off abruptly
(see Fig 6b). In
the
D400
was under-
Type II tapes
Dolby replay errors
is limited, parricu-
II
Type
tapes
compression
(-2dBon
the
rate
visible
pro-
The
was
and
high
at
deck's
of
its
55
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