AMPEG J12R Owner's Manual

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THE FRONT PANEL:

1. Guitar Input accepts
a standard 1/4” instru­ment plug from your
electric guitar. This input
is at 0dB level.

2. Accordion Input

accepts a standard 1/4”
instrument plug from
high output electronic
instruments. This input is
padded 6dB to compen­sate for higher output
sources.

3. Volume controls the
overall output level of
the amplifier. At lower
volume settings the

sound will be clean. As
you push the volume
higher and crank your
guitar the sound
becomes distorted.

4. Treble adjusts the
output level of the high
frequency and offers a
cut or boost of 30dB at
5kHz.

5. Bass adjusts the out­put level of the low fre­quencies and offers a
cut or boost of 16dB at
50Hz.

6. Reverb-Dimension

controls the amount of
reverberation applied to
the signal. With the con­trol at the “0” position
there is no reverb
applied; as the control is
turned towards “10” the
amount of reverb
increases accordingly.

7. Power light indicates
the amplifier is turned on
by glowing an iridescent
blue color.

8. Power switch is used
to turn the amplifier on
and off.

Thank you for selecting the Ampeg Classic Jet guitar amplifier. Revived from the sixties and
ready for the nineties, this easy-to-use amplifier represents Ampeg’s quest to provide you
the finest instrument amplification systems available. In order to get the most out of your
new amplifier, please read these instructions before its use.

JET II

5

6

MODEL J-12R

1 2 3 4 5 6 7 8

GUITAR ACCORDION

4

0

VOLUME

7

8

9

10

3

2

1

5

6

4

0

TREBLE

7

8

9

10

3

2

1

5

6

4

3

2

1

10

0

BASS

REVERB

5

6

4

7

3

8

2

1

9

10

0

DIMENSION

7

8

9

OFF

ON

9 10 11 12

13

(Reverb cables:
do not disturb)

(Reverb cables:
do not disturb)

THE REAR PANEL:

9. Power cord connects
the amplifier to a suit­able source of A.C. volt­age. This is a grounded,
three-wire cord and must
be connected to a prop­erly grounded outlet. DO

NOT attempt to defeat
the ground connection
of the power cord! If

your amp was pur­chased outside of the
United States, see the
sticker next to the A.C.
connector for its power
ratings. Follow the
above guidelines.

10,11. Power Tubes:

EL84 / 6BQ5 (2)

12. Power Amp Phase
Splitter Tube: 12AX7A /

7025 (1)

13. Preamp Tube:

12AX7A / 7025 (1)
Replace tubes ONLY

with same types! Refer
to enclosed publication
about Tubes and Tube
Amplifiers for additional
information.

THIS EQUIPMENT HAS BEEN
DESIGNED AND ENGINEERED
TO PROVIDE SAFE AND RELI­ABLE OPERATION. IN ORDER
TO PROLONG THE LIFE OF THE
UNIT AND PREVENTACCIDEN­TALDAMAGES OR INJURY,
PLEASE FOLLOW THESE PRE­CAUTIONARY GUIDELINES:

CAUTION: TO REDUCE THE
RISK OF ELECTRIC SHOCK, DO
NOT OPEN CHASSIS; DO NOT
DEFEAT OR REMOVE THE
GROUND PIN OF THE POWER
CORD; CONNECT ONLYTO A
PROPERLY GROUNDED AC
POWER OUTLET.

WARNING: TO REDUCE THE
RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOIS­TURE.

CAUTION: NO USER-SERVICE­ABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SER­VICE PERSONNEL.

CAUTION: OUR AMPLIFIERS
ARE CAPABLE OF PRODUCING
HIGH SOUND PRESSURE LEV­ELS. CONTINUED EXPOSURE
TO HIGH SOUND PRESSURE
LEVELS CAN CAUSE PERMA­NENT HEARING IMPAIRMENT
OR LOSS. USER CAUTION IS
ADVISED AND EAR PROTEC­TION IS RECOMMENDED IF
UNIT IS OPERATED AT HIGH
VOLUME.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER.

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"
“ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES.”
"REFERREZ-VOUS AU MANUAL D'UTILISATION"
"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"

EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DESSYMBÔLES GRAPHIQUES:

"DANGEROUS VOLTAGE"
“VOLTAJE PELIGROSO”
"DANGER HAUTE TENSION"
"GEFAHLICHE SPANNUNG"

=

=

PRECAUCION

RIESGO DE CORRIENTAZO

NO ABRA

PRECAUCION PARA DISMINUOIR EL RIESGO DE CORRIENTAZO

NO ABRA LA CUBIERTA

NO HAY PIEZAS ADENTRO QUE EL USARIO PUEDO REPARAR

DEJE TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS

ATTENTION

RISQUE D'ELECTROCUTION

NE PAS OUVRIR

ATTENTION: POUR REDUIRE D'ELECTROCUTION NE PAS

ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST REPRABLE

PAR L'UTILISATEUR. POUR TOUTE REPARATION, S'ADRESSER A UN

TECHNICIEN QUALIFIE.

VORSICHT

ELEKTRISCHE SCHLAGGEFAHR

NICHT OFFENEN

VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT

DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM

BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM

WARTUNGSPERSONAL ZU UBERLASSEN.

ESTE APARATO HA SIDO DISE­NADO Y CONSTRUIDO PARA
PROVEER ANOS DE OPERA­CION SEGURA Y CONFIABLE.
PARAPROLONGAR LA VIDA DE
ESTAUNIDAD E IMPEDIR
DANOS ACCIDENTALES POR
FAVOR SIGA ESTAS INSTRUC­CIONES PREVENTIVAS:

PRECAUCION: PARADISMINUIR
EL RIESGO DE DESCARGAS
ELECTRICAS: (1) NO ABRALA
CUBIERTA, (2) NO ES
RECOMENDABLE REMOVER O
DESACTIVAR LAPATADEL
POLO A TIERRA DEL CABLE DE
CORRIENTE, CONECTE COR­RECTAMENTE AUNA TOMA DE
CORRIENTE A TIERRA.

ADVERTENCIA: PARAEVITAR
DESCARGAS EL ECTRICAS O
PELIGRO DE INCENDIO, NO
DEJE ESTE APARATO
EXPUESTO A LA LLUVIA O
HUMEDAD.

PRECAUCION: NO HAY PIEZAS
ADENTRO QUE EL USUARIO
PUEDE REPARAR. DEJE TODO
MANTENIMIENTO A LOS TÉCNI­COS CALIFICADOS.

PRECAUCION: NUESTROS
AMPLIFICADORES PUEDEN
PRODUCIR NIVELES DE PRE­SION DE SONIDO ALTO.
EXPOSICION CONTINUADAA
LOS NIVELES DE PRESION DE
SONIDO ALTO PUEDE CAUSA
DANO PERMANENTE ASU
OIDO. ES ACONSEJADO QUE
USE PRECAUCION AL USUARIO
Y ES RECOMENDADO PROTEC­CION PARALOS OIDOS SI LA
UNIDAD ES OPERADAA VOLU­MEN ALTO.

CET ÉQUIPEMENT AVAIT ÉTÉ
INVENTÉ ET ARRANGÉ POUR
POURVOIR DES ANNÉES
D'USAGE SAUF ET SÛR. POUR
PROLONGER LA VIE DE CET
APPAREILET POUR EMPÊCHER
LES DOMMAGES ET LES TORTS
ACCIDENTELS, SUIVEZ LES
INSTRUCTIONS DE PRÉCAU­TION.

AVERTISSEMENT: POUR
RÉDUIRE LES RISQUES D'ÉLEC­TROCUTION: (1) N’OUVREZ
PAS LE CHÂSSIS, (2) NE PAS
ESSAYER DE SUPPRIMER LA
BROCHE CORRESPONDANT À
LA TERRE.

ATTENTION: POUR RÉDUIRE
LES RISQUES D'UN FEU OU
D'ÉLECTROCUTION, N’EX­POSEZ PAS L'APPAREIL À LA
PLUIE OU À LA MOITEUR.

ATTENTION: IL N'Y A PAS
D’ÉLÉMENTS RÉPARABLES
DANS L'APPAREIL. CONSULTER
UN TECHNICIEN QUALIFIÉ
POUR LES RÉPARATIONS.

ATTENTION: NOS AMPLIFICA­TEURS SONT CAPABLES DE LA
PRODUCTION DES NIVEAUX DE
SON D'UNE HAUTE PRESSION.
L'EXPOSITION CONTINUE AUX
CES NIVEAUX PEUT CAUSER
LA SURDITÉ PERMANENTE. LA
PRUDENCE EST ADVISÉ À UTIL­ISATEUR ET LA PROTECTION
DES OREILLES EST RECOM­MANDÉ SI L'APPAREILEST
UTILISÉ À UN HAUT NIVEAU DE
VOLUME.

The J-12R is covered with a durable Tolex material: wipe it clean with a lint-free cloth. Never

spray cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish.

El J-12R esta cubierto con un material durable Tolex: limpielo con una toalla seca. Nunca rocie

el gabinete con sustancias limpiadoras. Evite usar materiales abrasivos con los cuales

pueda danar el acabado.

Le J-12R est couvert avec «Tolex» un revêtement noir et durable. Essuyez cette matière avec

une toile propre et sans charpie. Ne pulvérisez jamais les agents de nettoyage sur l'appareil.

Evitez les nettoyeurs abrasifs qui peuvent endommager le «Tolex.»

Ampeg is proudly Made in America.

A product of SLM Electronics, 1400 Ferguson Avenue, St. Louis, MO 63133 U.S.A.

J-12R TECHNICAL SPECIFICATIONS:

OUTPUT POWER RATING 15 Watts RMS @ 5 % THD 8 ohm load 120 VAC
SIGNAL TO NOISE RATIO 70dB Typical
POWER REQUIREMENTS Domestic: 750mA, 100/120 VAC, 60 Hz

Export: 375mA, 220/240 VAC, 50 Hz

GAIN 69 dB
TREBLE 30 dB Boost and Cut @ 5 kHz
BASS 16 dB Boost and Cut @ 50 Hz
SPEAKER SPECS 12”, 20 w, 8 ohm, 1” voice coil diameter, 15 oz. magnet
SIZE AND WEIGHT 18.75” W x 16” H x 10” D

30 lbs.

Ampeg continually develops new products, as well as improves existing ones. For this reason,

the specifications and information in this manual are subject to change without notice.

Ampeg continuamente desarrolla nuevos productos, así como también mejora los existentes. Por esta razón,

las especifaciones é información incluidos en este manual están sujetos a cambios sin previo aviso.

Ampeg développe continuellement des nouvels produits, ainsi d'améliorer ceux qui existe. Pour cette

raison les spécifications et les informations dans ce manuel peuvent se changer sans préavis.

P/N 47-277-01 • 02/96