Technics SH-GE70 User manual

•
A
,
,
StereoGraphicEqualizer
SH-GE70
OPERATING INSTRUCTIONS
•
1B1 [GNl
Notes:
•Specifications differ according tothe area code.
•The "EB"areacode, for example,indicates United Kingdom specifica-
tions.
•The "EB"indication is shown onthe packingcase and serialnumbertag.
Before operating this unit, please read these instructions completely.

We want to thank youfor selectingthisproduct andto
welcome youtothe growingfamily of satisfied
Technicsproductownersaround the world.
We feelcertain you will get maximumenjoymentfrom
this new addition to yourhome.
Pleasereadtheseoperatinginstructionscarefully,
andbe sure to keepthemhandy for convenient
reference.
Contents
• For UnitedKingdom 2
•Suggestions for Safety 3
•Accessories 4
•Connections 4
•Front PanelControls and Functions 5
•Operation 7
•TroubleshootingGuide 11
•Maintenance 11
•Technical Specifications 11
For UnitedKingdom
("EB" areacodemodelonly)
The "EB"indication is shown onthe serialnumbertag.
Important
THE WIRES IN THISMAINSLEAD ARE COLOURED IN ACCOR-
DANCE WITH THE FOLLOWINGCODE.
BLUE:NEUTRAL
BROWN: LIVE
Thisapparatus was produced toBS 800.
As the colours ofthe wires inthe mainslead of thisapparatus may
not correspondwith the colouredmarkingsidentifying the terminals
in yourplugproceed as follows. The wirewhich is colouredBLUE
must be connected tothe terminalwhich is markedwith the letter N
or colouredBLACK.
The wirewhich is colouredBROWNmust be connected tothe
terminalwhich is markedwith the letter Lor colouredRED.
Under no circumstancesmusteither ofthe abovewires be
connected tothe earthterminal ofa three pin plug.
-2-

Suggestions for Safety
„ *'
•Usea standard AC walloutlet
1. Use from anAC powersource of highvoltage,such asfor
an air conditioner, is verydangerous.
There isthe possibility that a fire might be caused by making
such a connection.
2. A DC powersourcecannot be used.
Be sure to check the powersourcecarefully,especially ona
ship or otherplacewhere DCis used.
• Grasp the plugwhendisconnecting the power
supplycord
1. Wet hands are dangerous.
A dangerouselectricshock may result ifthe plug is touched by
wet hands.
2. Neverplaceheavyitems ontopofthe powersupplycord,
and neverforce itto bendsharply.
•AC outlet on rearpanel
(not equipped for some countries)
1. Any equipmentconnectedhereshouldhave the specified
power consumption or less.
Thisoutlet is exclusively forthe connection of otheraudio
equipment,such asa tapedeck. Be sure the powerconsump-
tiondoes not exceed the wattagespecifiednear theAC outlet.
2. Neverconnectotherelectricalappliances,such asan iron
or toaster.
If appliancewith a largepowerconsumption is connected, an
accidentmightoccur asa result of overheating.
• Place the unitwhere it will be wellventilated
Place thisunit at least 10 cm (4")awayfromwallsurfaces,etc.
• Avoid places such asthe following:
In directsunlight orin otherplaceswhere the temperature is
high.
In placeswherethere is excessivevibration or humidity.
Such conditionsmightdamage the cabinetand/orothercompo-
nent parts and therebyshorten the unit'sservicelife.
CAUTION!
DO NOT INSTALL OR PLACE THIS UNIT INA BOOK-
CASE, BUILT IN CABINET ORIN ANOTHER CONFINED
SPACE IN ORDER TO KEEPWELLVENTILATEDCON-
DITION. ENSURETHATCURTAINS ANDANY OTHER
MATERIALS DONOT OBSTRUCT THE VENTILATION
CONDITION TO PREVENTRISK OF ELECTRICSHOCK
OR FIREHAZARD DUETO OVERHEATING.
.
•Be sure to place the unit ona flat,levelsurface
If the surface is inclined, a malfunction may result.
• Neverattempt to repair or reconstructthisunit
A serious electric shock might occur if this unit is repaired,
disassembled or reconstructed by unauthorizedpersons, orifthe
internal parts are accidentallytouched.
• Takeparticularcare if children are present
Never permitchildren toput anything,especiallymetal,inside this
unit. A seriouselectricshock or malfunctioncouldoccur if articles
such as coins, needles, screwdrivers,etc. are inserted through the
ventilationholes,etc. of thisunit.
•If water is spilled onthe unit
Be extremelycareful if water is spilled onthe unit,because a fire or
seriouselectricshockmightoccur.Immediatelydisconnect the
power cordplug, and consultwithyourdealer.
• Avoidspray-typeinsecticides
Insecticidesmightcausecracks or "cloudiness" inthe cabinet and
plasticparts of thisunit. Thegas used in suchspraysmight,
moreover, be ignitedsuddenly.
• Never use alcohol or paintthinner
These and similarchemicalsshouldnever be used,becausethey
mightcauseflaking or cloudiness ofthe cabinetfinish.
• Disconnect the powersupplycord ifthe unit
will notbe used fora long time
If the unit is left fora longtimewith the power ON, thiswill not only
shorten its usefuloperationlife, butmay alsocauseothertroubles.
•If troubleoccurs
If, duringoperation, the sound is interrupted or indicators no longer
illuminate, orif abnormalodor or smoke is detected,immediately
disconnect the powercordplug, and contactyourdealer oran
AuthorizedServiceCenter.
NORSK
ADVARSEL!
APPARATET MA IKKE PLASSERES I EN BOKHYLLE,
ET INNEBYGGET KABINETT ELLER ET ANNETLUK-
KET STEDHVORVENTILASJONSFORHOLDENE ER
UTILSTREKKELIGE. S0RG FORAT GARDINERELLER
LIGNENDEIKKEFORVERRERVENTILASJONSFOR-
HOLDENE, SA RISIKO FOR ELEKTRISKSJOKKELLER
BRANN FORARSAKET AV OVERHETING UNNGAS.
SUOMI
VAROITUS!
ALA ASENNA TAI LAITA TATA LAITETTA KABINET-
TITYYPPISEEN KIRJAKAAPPIIN TAI MUUHUN
SULJETTUUN TILAAN, JOTTA TUULETUS ONNISTUI-
Sl. VARMISTA, ETTAVERHO TAI MIKAAN MUU MATE-
RIAALI El HUONONNATUULETUSTA,JOTTA
VALTETTAISIIN YLIKUUMENEMISESTA JOHTUVA
SAHKOISKU- TAI TULIPALOVAARA.
-3-

Accessories
.
• Stereoconnectioncables .2
•AC powersupply cord
1
Note: The configuration oftheAC powersupplycorddiffersaccording to area.
Connections
Make connections inthe numberedsequence by using the includedcables
|T1 Connect the stereo connectioncables.
The illustrationbelowshows an example of connectionsmade
whenthisunit is combinedwith a Technicselectroniccomponent
system, and showsonly the connections tobe made toand from
thisunit in thatcombination.
\2\ Connect theAC power supply cord.
TotheAC outlet ofthe audioequipment, or household AC outlet.
Note:
The configuration ofAC powersupplycorddiffersaccording to
area.
Q Connectthiscordonly after all othercables and cordshave
been connected.
If the cord istobe connected tothe household AC outlet, cutoff
and dispose ofthe plug and replacewith a suitable plug. (Refer to
"ForUnited Kingdom".)
@Fita suitableplug toanAC powersupplycord.
/
Household AC [7r\l ,'X ^
outlet EZl *??~
Amplifier (notincluded)
MONITOR AC OU
I-TAPE1T r-j-
REC PLAY I— —
OUT BACK
0
I
<a
TLET
T|
P
Thisunit
|1 I Stereo connection
A A cables(included)
r TAPE -i
•1 REC OUT PLAYBACK
|L) @-,
H
©-
-t
LINE
(fl
IN
)
-o
LINE
(
OUT
5)
-O
• — |
1 o 1 o |
V vL— HI Stereoconnection
Tape deck ^T^T
cables
<not
included)
(not included)
(( 5)
d
1
4
a
LINE IN LINE OUT
(3
(3
4-

Front Panel Controls and Functions
; fbdunicS SlBreo Gra^ic equalizer SH-GE70
II
1,1
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Control section
Power "standby c!)/on" switch
(power JL standby (!) -. on)
Thisswitchswitches ONandOFFthe secondary circuit power
only. The unit isinthe "standby"conditionwhenthisswitch is
set tothe standby (!) position.Regardless ofthe switch
setting, the primarycircuit is always "live" as long asthe
power cord is connected toan electricaloutlet.
•"Power-through" function
Discs, radiobroadcasts,etc. canbe heardeven ifthe
power of thisunit is switched to standby.
Note, however,that the powerplugshould be left
connected totheAC outlet.
Equalizer level-control buttons
(equalizer levelcontrol)
Thesebuttons are used for adjustment ofthe equalization
level ofthe left channel and rightchannelsimultaneously.
Upper row:Thesebuttons are used to increase the level of
eachsoundrange(frequencyrange).
Lower row:Thesebuttons are used to reduce the level of
eachsoundrange(frequencyrange).
Memory mode-selectbutton
(memo mode)
This button is used to select the equalizationmemorymode to
be used.
manual: Select thismode to program a desired curve to
the unit'smemory orto retrieve a curvethat you
have programmed.
fixed: Selectthismode to retrieve a curvethat was
originally pre-programmed tothe unit'smemory.
Memory button(memory)
This button is used to program the equalizationcurveinto the
memory.
Equalization mode-selectbutton (EQ on/off)
This button is used to switch the equalizationcorrection
function "EQon"and "off".Eachtime a button is pressed, the
modechangesalternately tooneorthe other ofthe following
modes.
EQ on: Selectthismode to make an equalizationcorrec-
tion.
EQ off:Selectthismode ifno equalizationcorrection is
desired.
Note that the"EQon" mode is automatically selected ifa
preset-memorybutton oran equalizerlevel-controlbutton is
pressedwhilethisbutton issettothe"EQ off"mode.
[6] Reverse button (reverse)
This button is used to reverse the equalizationcurveshown in
the display.
[7] Display mode-select buttons
(display mode)
These buttons are used to select the equalization-level
displaymode andanyofthe threetypes of spectrumdisplay
modedescribedbelow.
• Equalization-level display mode
EQ level:Selectthismodewhen you want to display the
equalizationlevel.
• Spectrumdisplay modes
(spectrum analyzer)
bar:Selectthismodewhen you want a bar-type
display.
dot:Selectthismodewhen you want a dot-type
display.
peakhold:Selectthismodewhen you want the peak to
be held inthe display.
Preset-memory buttons ([Tj-H)
These buttons are used to program an equalizationcurveinto
the memory, orto retrieve a curveoriginallyprogrammedinto
the unit'smemory.
Recording mode selector
(EQrec M. off m. on)
on: Setto this position to make a taperecording ofa radio
broadcast ora discwhilecontrolling the frequency
response.
off: Setto this position to record without equalizer correc-
tion.
Input selector (A source .•. tape)
source: Setto thisposition to listen tothe radio ora
compactdisc,etc.
tape: Setto thisposition to listen toa tapedeck
connected tothe back of thisunit.
-5-

Front PanelControls and Functions
(continued)
full range
displays the combinedlevel
of allofthe frequency
ranges.
Display section
Equalization/Spectrumdisplay
The followingequalization-leveldisplay and threetypes of
spectrum display are possible.
• Equalization-leveldisplay
The amount of correction is displayed bya series of lines (=)
for eachsoundrange(frequencyrange).
• Spectrumdisplays
Bar-type display
Thisdisplay canbe used to show the outputstrength for each
soundrange(frequencyrange), andto show the output
strength of sound forall ranges(fullrange) bya bar-type
display.
Dot display
Only the upper two parts ofthebar display are shown,thus
making the strength ofthe sound for eachsoundrangeeven
easier to see.
Peak-hold display
The peaksoundvalue of eachsoundrange is held onthe
display for about two secondsafter it occurs.
+« 96- -
ii
Note:
If an equalizationlevel-control orthe memory-modeselector
or a preset-memorybutton is pressedduring any displayother
than the equalization-leveldisplay, the equalization-level
display will be shown for about five seconds, afterwhich the
former displaywillreturn.
\B\ Equalization-presetindicators (H]-®)
The indicatorcorresponding tothe pressedpreset-memory
buttonwillilluminate.
manual:Indicates an equalizationcurvethat you program-
med into the memory.
fixed:Indicates oneofthesix equalizationcurvesthat
were originallyprogrammedinto the memory.
lC\ Equalization-memoryindicator(memory)
Thisindicatorilluminateswhen the memorybutton is pressed,
thusindicatingthat an equalizationcurve canbe programmed
into the memory.
\D\ Memory-modeindicators
fixed: Indicatesthat oneofthe equalizationcurvesthat
were originallyprogrammedinto the memory can
be retrieved.
manual:Indicatesthat an equalizationcurvethat you
programmedinto the memory canbe retrieved.
[E] Equalization-modeindicators
EQ on: Indicatesthat the equalizationeffect has been
switched ON.
EQ off:Indicatesthat the equalizationeffect has been
switchedOFF.
[F] Reverseindicator(reverse)
Thisindicatorilluminateswhen the reversebutton is pressed,
thus indicating that an equalizationcurve is reversed.Note,
however, thattherewill beno illumination ifthe equalization
curve is flat.
-
-
- 6-

Operation
Technics si.
Equalization-modeindicator Recording mode
selector
1 > 1
~
5 6
To adjust tothe desiredtonequality
1
Switch the amplifier ONand Reduce the
volumelevel of the amplifier.
Set the amplifier'stonecontrols tothe centreposition, and
set the superbassswitch (if equipped) totheoff position.
Adjust tothe desired sound.
When the equalizerlevel-controlbuttoncorresponding to
the frequency tobe adjusted is pressed, the equalization
levelchanges in2 dB steps.
Setthe tape-monitorselector ofthe amplifier
to "Tape" position. (Refer to note)
(Refer tothe operatinginstructions ofthe amplifier for
furtherdetails.)
Switch ONthe powerswitch.
Press the Inputselectorbutton.
source: Setto thisposition to listen tothe radio ora
compactdisc,etc.
tape: Setto thisposition to listen toa tapedeck
connected tothe back of this unit.
Switch ONthe equalizationmode-selectbut-
ton.
(The "EQ on" equalization-modeindicatorwillilluminate.)
Press the"EQ level"buttons.
(The equalization-leveldisplaywillappear.)
8
Adjust the volumelevel ofthe amplifier.
After completing the adjustmentselect the desireddisplay
by pressing the displaymode-selectbutton: "bar", "dot" or
"peak hold".
Notes:
•To listen or recordwithout the equalization effect, either press the
equalizationmode-selectbutton (tothe "EQ off"setting) or switch
OFFthe power ofthe graphicequalizer.
•Donot attempt to adjust the equalizationlevelduringrecording.
Recording modeselector
on:Setto thisposition to make a taperecording ofa radio
broadcast ora discwhilecontrolling the frequency
response.
off: Setto thisposition to recordwithoutequalizercorrection.
Note:
The equalizationswitchmust besettothe "on"position and
then the inputselectormust besettothe "source" position,
otherwise the frequencyresponsecannot be controlled.
This onlyworks for tapedecksconnected to thisunit.
Notes:
•Ifthe amplifier hasa recording mode selector andan input selector: (Adjust setting as shown inthe figure.)
O O O D ODD D O
(rec selector)
phono or tuner
• If your amplifier has terminals (GRAPHICEQ/EXTERNAL) for connection of other equipment, useofthe recording selector is
unnecessary.
-7-

Operation
(continued)
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Equalization-preset Mai
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To program an equalization curve into the memory
As many assix curves canbe programmedinto and retained by
the memory of thisunit. Itis convenient to programthosecurves
that are frequentlyused.
1
Adjust tothe desired equalization curve.
(Adjust by following the steps in"To adjust tothe desired
tone quality" on page 7.)
2
Press the "memory"button.
(The equalization-memory indicator will illuminate.)
•To cancel memory programming, press the memory
button once again.
3
Press oneofthe preset-memorybuttons
(Q]-[6]), whichever istobe used to make the
programming tothe memory.
(The correspondingequalization-presetindicator will illu-
minate, andthe programmingwill be made.)
Note:
If a new curve is programmed fora number for which a curve is
alreadyprogrammed inthe memory, the previouslyprogrammed
curvewill be erased.
•To produce a reversed equalization curve
This feature canbe used, for example, to listen tothe original
soundcharacteristics ofa tapethat has beenrecordedwithspecial
equalizationeffects by using the graphicequalizer.
First, display the curve usedwhen the recording
was made.
O
Then press the "reverse"button.
The reverseindicatorwillilluminate.
M
In thisway, youcan instantlyproduce a curvethat isthe opposite of
the curve being displayed.
The playbacksoundwillthen be corrected by thiscurve, and will
become a flatcharacteristic.
•When this button is pressed again, the curvereturns to previous
condition.
-
-8-

Equalization-preset indicators Memory-mode indicators
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To retrieve equalization curves from the memory
This unit has beenpre-programmedwith six types of typical
equalizationcurveswhich are applicable to certainstyles of music.
1
Press the "memomode"button.
manual:Selectthismodewhen you want to retrieve a
equalizationcurvethat you haveprogrammed
intomemory.
fixed: Selectthismodewhen you want to retrieve a
equalizationcurvethat was originallyprogram-
med intomemory asa permanent("fixed")curve.
(Thememory-mode indicator willindicate the selection
made.)
Press oneofthe preset-memorybuttons,
whichever corresponds tothe curve tobe
retrieved.
(The correspondingequalization-presetindicatorwill illu-
minate.)
•While inthe "fixed"mode, ifoneofthe equalizerlevel-control
buttons is pressed, the unit willautomaticallyswitch tothe
"manual" mode.
Note:
Curves programmedinto the memorywill be retained for about two
weeks iftheAC powersupplycord is unplugged. If curves are
erased,theymust be programmedagain.Note,however,that
curves originallyprogrammedbeforehandinto the unit'smemory
as permanentcurves(the"fixed"curves)will notbe erased.
• "MOSTRECENT"(recall)memory
The lastposition oftheEQ levelcontrols(whether in memory or
adjusted manually)will be automaticallyenteredinto the memory
when the power is switchedOFF.When the power is switched ON,
these positionswill be recalled.
-9-

Operation (continued)
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Preset-memory buttons
Equalizationcurvespre-programmed to thisunit
Thiscurve canbe used toadd "punch" to rock and other
music.
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Thiscurve canbe used to clarify the treblerange of jazz. etc.
This curve canbe used to listen to backgroundmusic, etc. ata
low volumelevel.
|4| Thiscurve canbe used to clarify vocalmusic.
Thiscurve canbe usedwhenmakingtapes to listen to
throughheadphones-stereounits.
Thiscurve canbe usedwhenmakingtapes to listen to
through a car stereo.
-10-

Troubleshooting Guide
Before requestingservice for thisunit,check the chartbelow fora possiblecause ofthe problem youare experiencing.Somesimplechecks ora
minor adjustment on yourpart may eliminate the problem and restoreproper operation.
If youarein doubtaboutsome ofthe checkpoints, orifthe remediesindicated inthe chart donot solve the problem, refer tothe directory of
Authorized ServiceCenters(enclosedwiththisunit) to locate a convenientservicecenter, or consultyourTechnicsdealer for instructions.
Problem
No sound.
Correction isnot possible at playback
(includingrecording.)
Probable cause(s)
Incorrectconnection.
The equalizationmode-selectbutton issetto
"EQoff".
The recordingmodeselector ofthe equalizer is
set tothe "off"position.
The input selector ofthe equalizer issettothe
"tape" position.
Suggested remedy
Refer to page 4 andtothe Operation
Instructions ofthe amplifier.
Set to "EQ on".
Set ittothe "on" position.
Set ittothe "source" position.
Maintenance
To cleanthisunit, usea soft, dry cloth.
If the surfaces are extremelydirty, usea soft cloth,dippedinto a
soap-and-watersolution ora weakdetergentsolution.
Wring the clothwellbeforewiping the unit.
Wipe onceagainwith a soft, dry cloth.
Never use alcohol,paintthinner, or benzine, nora chemically
treated cloth to cleanthisunit.
Suchchemicals may damage the finish of yourunit.
Technical Specifications
Frequencyresponse
(centerposition):
Maximum output voltage:
Ratedoutputvoltage:
Maximuminputvoltage:
Inputsensitivity:
Rated totalharmonic
distortion:
Signal-to-noiseratio:
Inputimpedance:
Gain:
5Hz~100kHz(-3dB)
8V(1 kHz, THD 0.03%)
1V
8V (1kHz)
1V
0.005% (20 Hz~20 kHz),
at 1 V output
0.003% (1 kHz) at1 V output
98dB/1 V, DIN 45 500
47 kO
0±1dB
Equalization-level
controls:
Center frequencies:
GENERAL
Power supply:
Powerconsumption:
Dimensions(WxHXD):
Weight:
+ 12dB—12dB
(7 frequency ranges, in2 dB steps)
63 Hz, 160 Hz, 400 Hz,1 kHz,
2.5 kHz, 6.3 kHz, 12.5kHz
(For UnitedKingdom)
AC 50/60 Hz, 230-240 V
(For others)
AC 50/60 Hz,240V
11 W
(with powerswitch
"standby"; 6.5W)
430x102x280 mm
2.9kg
-11-

MatsushitaElectricIndustrialCo.,Ltd.
Osaka542-8588,Japan
RQT0527-2B
F0590B3078