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.

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.

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.

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.

THIS EQUIPMENT HAS BEEN	ESTE APARATO HA SIDO DISE-	CET ÉQUIPEMENT AVAIT ÉTÉ
DESIGNED AND ENGINEERED	NADO Y CONSTRUIDO PARA	INVENTÉ ET ARRANGÉ POUR
TO PROVIDE SAFE AND RELI-	PROVEER ANOS DE OPERA-	POURVOIR DES ANNÉES
ABLE OPERATION. IN ORDER	CION SEGURA Y CONFIABLE.	D'USAGE SAUF ET SÛR. POUR
TO PROLONG THE LIFE OF THE	PARA PROLONGAR LA VIDA DE	PROLONGER LA VIE DE CET
UNIT AND PREVENT ACCIDEN-	ESTA UNIDAD E IMPEDIR	APPAREIL ET POUR EMPÊCHER
TAL DAMAGES OR INJURY,	DANOS ACCIDENTALES POR	LES DOMMAGES ET LES TORTS
PLEASE FOLLOW THESE PRE-	FAVOR SIGA ESTAS INSTRUC-	ACCIDENTELS, SUIVEZ LES
CAUTIONARY GUIDELINES:	CIONES PREVENTIVAS:	INSTRUCTIONS DE PRÉCAU-
CAUTION: TO REDUCE THE	PRECAUCION: PARA DISMINUIR	TION.
CAUTION: TO REDUCE THE	PRECAUCION: PARA DISMINUIR	AVERTISSEMENT: POUR
RISK OF ELECTRIC SHOCK, DO	EL RIESGO DE DESCARGAS	AVERTISSEMENT: POUR
NOT OPEN CHASSIS; DO NOT	ELECTRICAS: (1) NO ABRA LA	RÉDUIRE LES RISQUES D'ÉLEC-
DEFEAT OR REMOVE THE	CUBIERTA, (2) NO ES	TROCUTION: (1) N’OUVREZ
GROUND PIN OF THE POWER	RECOMENDABLE REMOVER O	PAS LE CHÂSSIS, (2) NE PAS
CORD; CONNECT ONLY TO A	DESACTIVAR LA PATA DEL	ESSAYER DE SUPPRIMER LA
PROPERLY GROUNDED AC	POLO A TIERRA DEL CABLE DE	BROCHE CORRESPONDANT À
POWER OUTLET.	CORRIENTE, CONECTE COR-	LA TERRE.
WARNING: TO REDUCE THE	RECTAMENTE A UNA TOMA DE	ATTENTION: POUR RÉDUIRE
WARNING: TO REDUCE THE	CORRIENTE A TIERRA.	ATTENTION: POUR RÉDUIRE
RISK OF FIRE OR ELECTRIC	ADVERTENCIA: PARA EVITAR	LES RISQUES D'UN FEU OU
SHOCK, DO NOT EXPOSE THIS	ADVERTENCIA: PARA EVITAR	D'ÉLECTROCUTION, N’EX-
EQUIPMENT TO RAIN OR MOIS-	DESCARGAS EL ECTRICAS O	POSEZ PAS L'APPAREIL À LA
TURE.	PELIGRO DE INCENDIO, NO	PLUIE OU À LA MOITEUR.
CAUTION: NO USER-SERVICE-	DEJE ESTE APARATO	ATTENTION: IL N'Y A PAS
CAUTION: NO USER-SERVICE-	EXPUESTO A LA LLUVIA O	ATTENTION: IL N'Y A PAS
ABLE PARTS INSIDE. REFER	HUMEDAD.	D’ÉLÉMENTS RÉPARABLES
SERVICING TO QUALIFIED SER-	PRECAUCION: NO HAY PIEZAS	DANS L'APPAREIL. CONSULTER
VICE PERSONNEL.	PRECAUCION: NO HAY PIEZAS	UN TECHNICIEN QUALIFIÉ
CAUTION: OUR AMPLIFIERS	ADENTRO QUE EL USUARIO	POUR LES RÉPARATIONS.
CAUTION: OUR AMPLIFIERS	PUEDE REPARAR. DEJE TODO	ATTENTION: NOS AMPLIFICA-
ARE CAPABLE OF PRODUCING	MANTENIMIENTO A LOS TÉCNI-	ATTENTION: NOS AMPLIFICA-
HIGH SOUND PRESSURE LEV-	COS CALIFICADOS.	TEURS SONT CAPABLES DE LA
ELS. CONTINUED EXPOSURE	PRECAUCION: NUESTROS	PRODUCTION DES NIVEAUX DE
TO HIGH SOUND PRESSURE	PRECAUCION: NUESTROS	SON D'UNE HAUTE PRESSION.
LEVELS CAN CAUSE PERMA-	AMPLIFICADORES PUEDEN	L'EXPOSITION CONTINUE AUX
NENT HEARING IMPAIRMENT	PRODUCIR NIVELES DE PRE-	CES NIVEAUX PEUT CAUSER
OR LOSS. USER CAUTION IS	SION DE SONIDO ALTO.	LA SURDITÉ PERMANENTE. LA
ADVISED AND EAR PROTEC-	EXPOSICION CONTINUADA A	PRUDENCE EST ADVISÉ À UTIL-
TION IS RECOMMENDED IF	LOS NIVELES DE PRESION DE	ISATEUR ET LA PROTECTION
UNIT IS OPERATED AT HIGH	SONIDO ALTO PUEDE CAUSA	DES OREILLES EST RECOM-
VOLUME.	DANO PERMANENTE A SU	MANDÉ SI L'APPAREIL EST
	OIDO. ES ACONSEJADO QUE	UTILISÉ À UN HAUT NIVEAU DE
	USE PRECAUCION AL USUARIO	VOLUME.
	Y ES RECOMENDADO PROTEC-
	CION PARA LOS OIDOS SI LA
	UNIDAD ES OPERADA A VOLU-
	MEN ALTO.

EXPLANATION OF GRAPHICAL SYMBOLS:	"DANGEROUS VOLTAGE"	"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"
EXPLICACION DE SIMBOLOS GRAFICOS:	= “VOLTAJE PELIGROSO”	= “ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES.”
	"DANGER HAUTE TENSION"	"REFERREZ-VOUS AU MANUAL D'UTILISATION"
EXPLICATION DES SYMBÔLES GRAPHIQUES:	"GEFAHLICHE SPANNUNG"	"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"

Specs and other information subject to change without notice.

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P/N 47-277-15 • 02/97

THE FRONT PANEL:

													15
1	2	3	4	5	6	7	8	9	10	11	12	13	14

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.

IMPORTANT! 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!

THE REAR PANEL:

BOTH CHANNELS

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.

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 number label for power ratings.

BOTH CHANNELS

OVERDRIVE CHANNEL

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.Mid adjusts 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.Volume 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.

MODEL: R-50H

SERIAL: Q2ZZ650022

LINE: 120 V ~ 60 Hz

WATTS: MAX

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.