AMPEG R-50H Owner's Manual

R-50H TECHNICAL SPECIFICATIONS

OUTPUT POWER RATING 50 Watts RMS @ 10 % THD 8 ohm load 120 VAC
SIGNAL TO NOISE RATIO 65dB Typical
POWER REQUIREMENTS Domestic 100/120 VAC, 60 Hz, 115VA

Export: 100/115 VAC, 50/60 Hz, 115VA

230VAC, 50/60Hz, 115VA

GAIN 60 dB Clean channel, 95 dB Overdrive channel
TREBLE 24 dB Range @ 5 kHz Clean channel

24 dB Range @2kHz Overdrive Channel

MID 8 dB Range @ 700 Hz
BASS 24 dB Range @ 40 Hz
TUBE COMPLEMENT Power Amp: EL34 (2); Preamp: 12AX7A (3)
SIZE AND WEIGHT 29.75”W x 11.25” H x 9.5”D, 34.2 lbs.

Specs and other information subject to change without notice.

Ampeg is proudly Made in America. ©1997 SLM Electronics, 1400 Ferguson Avenue,

St. Louis, MO 63133 U.S.A.

P/N 47-277-15 • 02/97

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 DESSYMBÔLESGRAPHIQUES:

"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 HASIDO DISE­NADO Y CONSTRUIDO PARA
PROVEER ANOS DE OPERA­CION SEGURA Y CONFIABLE.
PARAPROLONGAR LA VIDA DE
ESTAUNIDAD E IMPEDIR
DANOS ACCIDENTALES POR
FAVOR SIGAESTAS INSTRUC­CIONES PREVENTIVAS:

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

ADVERTENCIA: PARAEVITAR
DESCARGAS EL ECTRICAS O
PELIGRO DE INCENDIO, NO
DEJE ESTE APARATO
EXPUESTO A LALLUVIAO
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 ALUSUARIO
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
APPAREILETPOUR 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 LAPROTECTION
DES OREILLES EST RECOM­MANDÉ SI L'APPAREILEST
UTILISÉ À UN HAUT NIVEAU DE
VOLUME.

The R-50H 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.

1. Power switch turns the main power on and
off. Always turn this switch on first, off last.

Turn the Standby switch (#2) on at least 30
seconds after

turning on the Power switch.

2. Standby switch activates the amplifier when
ready for play. Always turn this switch off

first, on last. Turn the Power switch (#1) on at
least 30 seconds before turning on the
Standby switch. During short breaks of use,

turn the Standby switch off, leaving the Power
switch on. This will help prolong the life of the
amplifier’s tubes.

IMPORT

ANT! PLEASE NOTE:
Always connect the amplifier to
a suitable speaker cabinet and
set the Impedance switch (#18)
to the proper setting BEFORE
turning the amplifier on!

3. Power light indicates the amplifier is turned

on by glowing an iridescent blue color.

4. Channel Select activates the clean channel
in the down position and the overdrive channel
in the up position. When a footswitch is con­nected (see #5), this switch is bypassed and has
no affect.

5. Footswitch allows “remote control” of the
channel selection and reverb on/off. Insert the
stereo 1/4” plug of a two-button footswitch (such
as Ampeg’s AFP-2) here. The “tip” connection
controls channel switching, the “ring” controls
the reverb.

6. Line In serves as the “return” jack of an effect
loop, when connected to the output jack of a
floor pedal or rack-mounted processor. This jack
can double as a direct-into-the amplifier signal
feed when using the amp as a “slave” or exten­sion amplifier.

7. Line Out serves as the “send” jack of an
effect loop, when connected to the input jack of
a floor pedal or rack-mounted processor. This
jack can double as a signal output for connect­ing directly to a house sound console, recording
console, powered monitor or external amplifier.

8. Reverb controls the amount of reverberation
applied to both channels. 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.

9. Master controls the output volume level of the
overdrive channel. This control works with the
Gain control (#14) to produce sounds from
slightly distorted to screaming and everything in
between.

10. Bass adjusts the output level of the low fre­quencies for both channels. This control offers a
cut or boost of 24dB at 40Hz for both channels.

11. Midadjusts the output level of the middle fre­quencies for both channels. This control offers a
cut or boost of 8dB at 700Hz for both channels.

12. Treble adjusts the output level of the high
frequency range for both channels. This control
offers a cut or boost of 24dB at 5kHz for the
clean channel, 24dB at 2kHz for the overdrive
channel.

13. V olume controls the output level of the clean
channel.

14. Gain sets the amount of overdrive distortion
for the overdrive channel. This control works
along with the Master control (#9).

15. Each Input accepts a standard 1/4” instru­ment plug from your electric guitar. The right
input is at 0dB level while the left input is padded
6dB to compensate for higher output sources.

CLEAN CHANNELBOTH CHANNELS

OVERDRIVE CHANNEL

1 2 4 5 6 7 8 9 10 11 12 13 14

BOTH CHANNELS

3

15

17 18 1916

MODEL:
SERIAL:
LINE: V ~ Hz
WATTS: MAX

R-50H
Q2ZZ650022
120 60

16. Main Speaker jack: Use this jack to connect
the amplifier to your speaker cabinet. Always use
this jack “first” – if using a second cabinet, con­nect it to the Extension Speaker jack (#17).

17. Ext. Speaker jack: Use this jack to connect
the amplifier to a second speaker cabinet –
always use the Main Speaker jack (#16) “first.”

18. Impedance switch: Use this switch to match
the amplifier to the TOTAL impedance of your
speaker cabinet(s). Use the following chart to
determine the total impedance (in parallel):

CABINET NUMBER OF TOTAL

IMPEDANCE CABINETS IMPEDANCE

16 ohms 2 8 ohms

19. AC Line In: Use the supplied power cord to
connect 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! See the serial num-

ber label for power ratings.

THE FRONT PANEL:

THE REAR PANEL:

IMPORTANT NOTE ABOUT CERTAIN EXPORT UNITS:
In some areas 1/4” speaker jacks are not acceptable
for use on amplifiers capable of high output power
levels. For this reason the Speaker jacks on your
amplifier may resemble the illustration to the right.
Connect the amplifier to your speaker(s) using cables
rated for very high output power, terminated with the
appropriate connectors.