Ampeg Bass Amplifier B100R User Manual

							 















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1. 0dB Input accepts a standard
1/4” instrument plug from your bass.
This input is suited for use with
instruments that have passive elec-
tronics.
2. -15dB Inputaccepts a standard
1/4” instrument plug from high out-
put basses. This input is padded
15dB to compensate for higher out-
put sources and is suited for use
with basses that have active elec-
tronics or high output pickups.
3. Ultra Lowincreases the low fre-
quency output by 7dB at 40Hz. This
adds to the rumble and overall feel
of the low bass notes.
4. Ultra Middecreases the mid fre-
quency output by 6dB at 600Hz.
This removes some of the middle
frequencies for a “contoured”
sound.
5. Ultra Highincreases the high fre-
quency output by 7dB at 5kHz. This
adds crispness to your sound.
6. Peak LEDwill illuminate when
the Gain control (#8) is set too high.
This indicates overdriving of the
preamplifier which causes clipping.
(See the Gain control, #8.) 
7. Signal LEDwill illuminate when
the Gain control (#8) is adjustedproperly. (See the text for the Gain
control.)
8. Gainmust be adjusted to match
the output of your instrument to the
amplifier. For the proper setting,
turn on the amplifier, turn the Gain
control and the Master control (#13)
all the way down and begin playing
your bass.  Turn the Gain control up
until the Signal LED (#7) lights while
playing and the Peak LED (#6)
flashes occasionally.
9. Bassadjusts the output level of
the low frequencies and offers a cut
or boost of 12dB at 70Hz.
10. Low Midadjusts the output
level of the lower midrange frequen-
cies and offers a cut or boost of
12dB at 300Hz.
11. High Midadjusts the output
level of the upper midrange fre-
quencies and offers a cut or boost of
11dB at 1.5kHz.
12. Trebleadjusts the output level
of the high frequencies and offers a
cut or boost of 14dB at 7kHz.
13. Master controls the overall out-
put level of the amplifier and the
level of the signal at the
Headphones jack (#15).14. Line Outsupplies a mono sig-
nal for connecting to a mixing con-
sole, tape recorder or external
amplifier. The signal is pre-Master
and post-EQ.
15. Phonesallows the connection
of a pair of stereo headphones for
private practice sessions. The inter-
nal speaker is disconnected when-
ever headphones are used.
16. Power lightindicates the ampli-
fier is turned on by glowing an iri-
descent blue color.
17. Power switchis used to turn
the amplifier on and off.
18. Power cord (rear panel, not
shown)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. 
Thank you for selecting the Ampeg Rocket Bass amplifier. Inspired by the classic Ampeg
bass amps of the sixties, 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.  
						

							THIS EQUIPMENT HAS BEEN
DESIGNED AND  ENGINEERED
TO PROVIDE SAFE AND RELI-
ABLE OPERATION. IN ORDER
TO PROLONG THE LIFE OF THE
UNIT AND PREVENT ACCIDEN-
TAL DAMAGES OR INJURY,
PLEASE FOLLOW THESE PRE-
CAUTIONARY 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 ONLY TO A
PROPERLY GROUNDED AC
POWER OUTLET.
WARNING:TO REDUCE THE
RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOIS-
TURE.
CAUTION:NO USER-SERVICE-
ABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SER-
VICE PERSONNEL.
CAUTION:OUR AMPLIFIERS
ARE CAPABLE OF PRODUCING
HIGH SOUND PRESSURE LEV-
ELS. CONTINUED EXPOSURE
TO HIGH SOUND PRESSURE
LEVELS CAN CAUSE PERMA-
NENT HEARING IMPAIRMENT
OR LOSS. USER CAUTION IS
ADVISED AND EAR PROTEC-
TION IS RECOMMENDED IF
UNIT IS OPERATED AT HIGH
VOLUME.CAUTIONRISK 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 DUTILISATION
UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGENEXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DES SYMBÔLES GRAPHIQUES:DANGEROUS VOLTAGE
“VOLTAJE PELIGROSO”
DANGER HAUTE TENSION
GEFAHLICHE SPANNUNG==
PRECAUCIONRIESGO 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
ATTENTIONRISQUE DELECTROCUTION
NE PAS OUVRIR
ATTENTION: POUR REDUIRE DELECTROCUTION NE PAS
ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE NEST REPRABLE
PAR LUTILISATEUR. POUR TOUTE REPARATION, SADRESSER A UN
TECHNICIEN QUALIFIE.
VORSICHTELEKTRISCHE 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  DISE-
NADO Y CONSTRUIDO PARA
PROVEER ANOS DE OPERA-
CION SEGURA Y CONFIABLE.
PARA PROLONGAR LA VIDA DE
ESTA UNIDAD E IMPEDIR
DANOS ACCIDENTALES  POR
FAVOR SIGA ESTAS INSTRUC-
CIONES PREVENTIVAS:
PRECAUCION:PARA DISMINUIR
EL RIESGO DE DESCARGAS
ELECTRICAS: (1) NO ABRA LA
CUBIERTA, (2) NO ES
RECOMENDABLE REMOVER O
DESACTIVAR LA PATA DEL
POLO A TIERRA DEL CABLE  DE
CORRIENTE, CONECTE COR-
RECTAMENTE A UNA TOMA DE
CORRIENTE A TIERRA.
ADVERTENCIA:PARA EVITAR
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 TÉCNI-
COS CALIFICADOS.
PRECAUCION:NUESTROS
AMPLIFICADORES PUEDEN
PRODUCIR NIVELES DE PRE-
SION DE SONIDO ALTO.
EXPOSICION CONTINUADA A
LOS NIVELES DE PRESION DE
SONIDO ALTO PUEDE CAUSA
DANO PERMANENTE A SU
OIDO. ES ACONSEJADO QUE
USE PRECAUCION AL USUARIO
Y ES RECOMENDADO PROTEC-
CION PARA LOS OIDOS SI LA
UNIDAD ES OPERADA A VOLU-
MEN ALTO.CET ÉQUIPEMENT AVAIT ÉTÉ
INVENTÉ ET ARRANGÉ POUR
POURVOIR DES ANNÉES
DUSAGE SAUF ET SÛR.  POUR
PROLONGER LA VIE DE CET
APPAREIL ET POUR EMPÊCHER
LES DOMMAGES ET LES TORTS
ACCIDENTELS, SUIVEZ LES
INSTRUCTIONS DE PRÉCAU-
TION.
AVERTISSEMENT:POUR
RÉDUIRE LES RISQUES DÉLEC-
TROCUTION: (1)  N’OUVREZ
PAS LE CHÂSSIS, (2)  NE PAS
ESSAYER DE SUPPRIMER LA
BROCHE CORRESPONDANT À
LA TERRE.
ATTENTION: POUR RÉDUIRE
LES RISQUES DUN FEU OU
DÉLECTROCUTION, N’EX-
POSEZ PAS LAPPAREIL À LA
PLUIE OU À LA MOITEUR.
ATTENTION:IL NY A PAS
D’ÉLÉMENTS RÉPARABLES
DANS LAPPAREIL.  CONSULTER
UN TECHNICIEN QUALIFIÉ
POUR LES RÉPARATIONS.
ATTENTION:NOS AMPLIFICA-
TEURS SONT CAPABLES DE LA
PRODUCTION DES NIVEAUX DE
SON DUNE HAUTE PRESSION.
LEXPOSITION CONTINUE AUX
CES NIVEAUX PEUT CAUSER
LA SURDITÉ PERMANENTE.  LA
PRUDENCE EST ADVISÉ À UTIL-
ISATEUR ET LA PROTECTION
DES OREILLES EST RECOM-
MANDÉ SI LAPPAREIL EST
UTILISÉ À UN HAUT NIVEAU DE
VOLUME.
The B-100R 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 could damage the finish.
El B-100R 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 B-100R 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 lappareil.
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.
B-100R TECHNICAL SPECIFICATIONS:
OUTPUT POWER RATING100 Watts RMS, 4 ohm load, 120 VAC
SIGNAL TO NOISE RATIO70dB Typical
POWER REQUIREMENTSDomestic: 2.5A, 100/120 VAC, 60 Hz 
Export: 1.5A, 230 VAC, 50 Hz 
GAIN57dB 
ULTRA LOW+7dB @ 40Hz  
ULTRA MID-6dB @ 600Hz
ULTRA HIGH+7dB @ 5kHz 
BASS±12dB @70Hz
LOW MID±12dB @300Hz
HIGH MID±11dB @1.5kHz
TREBLE±14dB @7kHz
SPEAKER SPECS15”, 150 w, 4 ohm, 2.5” voice coil dia., 56 oz. magnet
SIZE AND WEIGHT19” W x 21.25” H x 14.25” D
65 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 daméliorer ceux qui existe.  Pour cette
raison les spécifications et les informations dans ce manuel peuvent se changer sans préavis.
P/N 47-591-01 • 04/96