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to the speaker terminals, being careful not to leave
any loose strands of wire that might touch the wrong
terminal and create a partial short-circuit.  Then move
the speakers to their intended locations. 

If the speakers cannot easily be set face-to-face,

phasing must rely on the “polarity” of the connecting
wires.  Note that the SPEAKERS terminals on the
amplifier are color coded:  in each channel the red
terminal has positive “+” polarity and the black termi-
nal is negative “-”.  The terminals at the rear of the
speakers are also marked for polarity, either via red
and black connectors or by labels: “+”, 1, or 8 ohms
for positive, “-”, 0, or G for negative.  As a general
rule the positive (red) terminal on the amplifier should
be connected to the positive terminal of the speaker,
in each channel. 

To facilitate this, the two conductors comprising the

speaker wire in each channel are different, either in
the color of the wire itself (copper vs. silver) or in the
presence of a small ridge or rib pattern on the insula-
tion of one conductor. Use this pattern to establish
consistent wiring to both speakers of a stereo pair.
Thus if you connect the copper colored wire (or
ribbed insulation) to the red amplifier terminal in the
Left channel, do the same in the Right channel.  At
the other end of the wire, if you connect the copper
colored wire (or the ribbed insulation) to the red or
positive terminal on the left-channel speaker, do the
same at the right-channel speaker. 

A note on overload protection. 

Because NAD amplifiers sound so clean and musi-

cal when driven beyond their nominal power ratings
and when used to drive low-impedance loudspeak-
ers, you may be tempted to stress your amplifier
beyond its design capacity.  It can safely and cleanly
drive complex speaker impedances with wide-range
musical signals whose peak level is 40 watts or more,
but it may overheat if called upon to deliver high
power CONTINUOUSLY into a low impedance. 

Thus you may play music at volume levels that

cause the brief transient peaks and climaxes in music
to exceed the amplifier’s rated power by a consider-
able margin. But if you overdrive the amplifier contin-
uously rather than only on peaks, the output transis-
tors may overheat. 

This is particularly likely if you try to drive two pairs

of speakers, or speakers having a very low imped-
ance, at high volume levels.  If the amplifier stops
playing and the “Protection” indicator glows red,
switch off the power for a few minutes and allow the
output stage to cool.  If overheating was the fault, the
amplifier will operate normally when it is turned back
on.  But severe abuse of this type may cause internal
fuses to blow to protect the amplifier.  If the amplifier
stops playing and the green Power LED ceases to
glow, return the amplifier to a NAD dealer for service. 

GB

NAD

7

IN CASE OF DIFFICULTY: A TROUBLE-SHOOTING GUIDE

SYMPTOM

POSSIBLE CAUSE

No sound.

Power not turned on.
AC line cord unplugged, or plugged into dead outlet.  (To check the
AC outlet, plug in an electric lamp.) 
Tuner selected but turned off or tuned to a blank frequency between
stations. 
Inoperative input selected (e.g. CD input selected with no CD 
playing). 
Tape Monitor engaged with no tape playing. 
Internal fuses blown; return amplifier to dealer for service.

No sound in one channel

Volume control for one of the channels is turned down. Check the
concentric volume control and ensure that both left and right are at
an equal level. 
Loudspeaker connecting wire pulled loose. (Check all connections,
both at the speakers and at the amplifier.)
Connecting cable pulled loose or making poor contact in socket.
Rotate plugs in jacks to restore contact. 
Short-circuit in a defective connecting cable.  Wiggle all cables,
especially where they enter plugs. 

Loud buzz and hum.

Dirty contact in a switch.  Exercise all front-panel switches to
restore clean wiping contact.
Connnecting cable pulled partially out of its jack. 
Defective connecting cable. 

Hum in tape playback

Tape deck located too close to amplifier (directly above or below). 
Tape deck located too close to television set. 
Plugs making poor contact in jacks. 

Weak bass, diffuse stereo imaging

Speakers wired out of phase.  Swap connections at the back of
ONE speaker.

Summary of Contents for 310

Page 1: ...GB F D E I S NAD 310 OWNER S MANUAL MANUEL D INSTALLATION BEDIENUNGSANLEITUNG MANUAL DEL USUARIO MANUALE DELLE ISTRUZIONI BRUKSANVISNINGARNA...

Page 2: ...ce of important operating and maintenance servicing instructions in the literature accompanying the appliance Note to CATV system installer This reminder is provided to call the CATV installer s atten...

Page 3: ...NAD 3 FRONT PANEL CONTROLS FIGURE 1 FIGURE 2 PLAY TAPE REC R L R L INPUT TAPE OUTPUT...

Page 4: ...black terminal is the nega tive or ground terminal For best stereo imaging the left and right speakers should be located at equal distances from your chair Use heavy duty 1 5mm2 16 gauge or thicker st...

Page 5: ...encies which are not present in some recordings Only at large rota tions away from center is there a substantial boost or cut at the mid bass frequencies that are common in music 3 TONE DEFEAT When th...

Page 6: ...its quality With two head recorders Hi Fi VCRs and most digital recorders the monitored signal heard whilst recording is not from the tape but is merely the signal passing through the recorder s elec...

Page 7: ...peaks and climaxes in music to exceed the amplifier s rated power by a consider able margin But if you overdrive the amplifier contin uously rather than only on peaks the output transis tors may overh...

Page 8: ...e branch s directement sur les bornes serre fils Pour un branchement plus durable et plus r sistant l oxydation il est possible de se procurer des c bles de haut parleurs munis de con necteurs nickel...

Page 9: ...nt de la mise hors tension Bien que ce ph nom ne soit totalement inoffensif il est possible de l viter soit en arr tant la source soit en baissant le volume avant de mettre l amplifi cateur hors tensi...

Page 10: ...brancher un cordon entre le jack d ENREGISTREMENT PORTABLE PORTABLE RECORD et le les jack s d ENTREE LIGNE LINE IN de l enregistreur et non pas ses entr es microphone Si votre enregistreur de bandes m...

Page 11: ...REGISTREMENT BANDE TAPE REC ou ENREGISTREMENT PORTABLE PORTABLE RECORD La commande de Volume est constitu e de deux commandes ind pendantes pour la voie gauche et la voie droite coupl es par frottemen...

Page 12: ...er le claquage des fusibles internes de mani re prot ger l amplifica teur Si l amplificateur s arr te et que le voyant vert POWER s teint renvoyer l amplificateur chez un concessionnaire NAD pour d pa...

Page 13: ...t an die Anschlu klemmen angeschlossen werden F r l n gere Lebensdauer und gr ere Korrosions best ndigkeit sind Lautsprecherkabel mit vernickelten oder vergoldeten Anschl ssen erh ltlich Gabelschuhe B...

Page 14: ...ird die relative Lautst rke der tiefen Frequenzen eingestellt In der Mittelstellung gerastet bei 12 Uhr werden die tiefen Frequenzen linear bertragen Drehung im Uhrzeigersinn nach rechts hebt die Laut...

Page 15: ...MONITOR AUSgerastet ist Bei AUSgerasteter Taste PORTABLE wird das Signal des an der r ckw rtigen Leiste gew hlten Quellenger tes an die Buchse PORTABLE RECORD geleitet Zur Aufnahme von einem Hochpege...

Page 16: ...r durch rote und schwarze Anschl sse oder durch Etiketten 1 oder 8 Ohm f r Pluspole 0 oder G f r Minuspole Grunds tzlich sollen f r jeden Kanal die roten Plusklemmen am Verst rker mit den Plusklemmen...

Page 17: ...tsprecherleitung lose Alle Anschl sse an den Lautsprechern und am Verst rker berpr fen Anschlu kabel herausgezogen oder hat schlechten Kontakt mit der Steckdose Drehen Sie die Stecker in den Buchsen u...

Page 18: ...esistencia a la corrosi n puede usted comprar cables de altavoz con conectores niquelados o dorados orejetas de bayo neta enchufes banana o conectores de pasador o instale tales conectores en los hilo...

Page 19: ...so vaya a usar durante un largo tiempo 2 BASS GRAVES El control de gravej ajusta el nivel relativo de las frecuencias bajas del sonido La respuesta del ampli ficador es m s plana cuando el control se...

Page 20: ...adas desconectar todas las entradas apretando ligera mente cualquiera de los pulsadores selectores de entrada de modo que todos queden OUT desconec tados Asegure que el pulsador TAPE MONITOR monitor d...

Page 21: ...s rojos y negros o con etiquetas 1 u 8 ohmios para positivo 0 o G para negativo Como regla general el terminal positivo rojo del amplificador debe conectarse el terminal positivo del altavoz en cada c...

Page 22: ...n tanto en los altavoces como en el amplificador Un cable de conexi n se ha soltado y hace un contacto defectuoso en el enchufe hembra Gire los enchufes machos en los enchufes jack para restablecer e...

Page 23: ...n connettori in nichel o dorati capocorda a forcella spina a banana o connettori a piedini oppure instal lare direttamente tali connettori sui cavi Le connes sioni ai morsetti possono essere effettuat...

Page 24: ...rispetto al centro l effetto del comando dei bassi molto delicato poich la sua azione limitata alle frequenze pi basse che non sempre sono presenti in tutte le registrazioni Un forte aumento o diminuz...

Page 25: ...e per nastri o processore di segnali collegato ai jack TAPE sul pannello posteriore Premere per l inserimento e ripremere per il disinser imento Quando TAPE MONITOR inserito la sorgente scelta tramite...

Page 26: ...in ciascun canale Per facilitare l operazione i due conduttori che cos tituiscono il cavo dell altoparlante in ciascun canale sono differenti il colore del cavo rame invece che argento o la presenza d...

Page 27: ...stro sia eguale Cavo di collegamento dell altoparlante allentato Controllare tutte le connessioni sia sugli altoparlanti sia sull amplificatore Collegare il cavo staccato o che non fa bene contatto ne...

Page 28: ...let i kontaktskru ven r synligt F r in kontaktstiftet och vrid hylsan medsols tills den r tdragen 2 Flata kabelskor Skruva loss den f rgade hyl san f r in den U formade flata kabelskon bakom hyl san...

Page 29: ...ten och detaljerna hos ljudet men eventuellt brus blir ocks mer m rkbart Om du vrider ner diskanten f r du ett mjukare ljud och h r brus och skrapljud mindre Med f r lite diskant f r du ett ointressan...

Page 30: ...t m ste Portable knappen vara i yttre l ge och Tape Monitor intryckt vervakning av inspelningssignalen r endast m jlig vid dubbning till en portabel enhet genom att anv nda dess h rtelefoner OBS kopie...

Page 31: ...minuter Om verhettning r orsaken kommer f rst rkaren att fungera normalt n r den sl s p igen H rt missbruk av denna typ kan g ra att interna s kringar sm lter f r att skydda f rst rkaren Om f rst rkar...

Page 32: ...SMPTE I M IM distortion 60Hz 7kHz 4 1 0 05 from 250mW to rated output IHF I M 0 05 CCIF IM distortion 19 20kHz at rated output Preamplifier Section Phono Input Input impedance R and C n a Input sensi...

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