AMPEG SR-212RT Owner's Manual

Table of Contents:
The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5
The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Important Information About Tubes and Tube Products
A Brief History Of The Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Tube Types And Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7,8
The Nature Of Tubes: Why (And When) To Replace Them . . . . .8,9
The Importance Of Proper Biasing . . . . . . . . . . . . . . . . . . . . . . . .9
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3
IMPORTANT SAFETY INSTRUCTIONS
READ, FOLLOW, HEED, AND KEEPALL INSTRUCTIONS AND WARNINGS.
DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS. FOR
PROPER OPERATION, THIS UNITREQUIRES 3” (75mm) OF WELL VENTILATED SPACE AROUND HEATSINKS AND OTHER AIR FLOW PROVISIONS IN THE CABINET.
DO NOT USE THIS APPARATUS NEAR SPLASHING, FALLING, SPRAYING, OR STANDING LIQUIDS.
CLEAN ONLY WITH LINT-FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS.
ONLY CONNECT POWER CORD TO A POLARIZED, SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND
COMPATIBLE WITH VOLTAGE, POWER, AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANELOF THE APPARATUS.
PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON, PINCHED, OR STRAINED.
UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME.
ONLY USE ATTACHMENTS, ACCESSORIES, STANDS, OR BRACKETS SPECIFIED BY THE MANUFACTURER FOR
SAFE OPERATION AND TO AVOID INJURY.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
SERVICE MUST BE PERFORMED BY QUALIFIED PERSONNEL.
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
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOIS­TURE. 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"
EXPLANATION OF GRAPHICAL SYMBOLS: EXPLICACION DE SIMBOLOS GRAFICOS: EXPLICATION DES SYMBÔLES GRAPHIQUES:
"DANGEROUS VOLTAGE" “VOLTAJE PELIGROSO” "DANGER HAUTE TENSION"
=
=
PRECAUCION
RIESGO DE CORRIENTAZO
NO ABRA
PRECAUCION: PARA REDUCIR EL RIESGO DE INCENDIOS O DESCARGAS ELECTRICAS, NO PERMITA QUE ESTE APARATO QUEDE EXPUESTO A LA LLUVIA O LA HUMEDAD. 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: PROTÉGEZ CET APPAREIL DE LA PLUIE ET DE L'HUMIDITÉ AFIN D'ÉVITER TOUT RISQUE D'INCENDIE OU D'ÉLECTROCUTION. 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.
Declaration Of Conformity
#35, Effective 01-01-2001
Manufacturer’s Name: SLM Electronics
Production Facility: 11880 Borman Drive, St. Louis, MO 63146, USA Production Facility: 700 Hwy 202 W, Yellville, AR 72687, USA Shipping Facility: 1400 Ferguson Ave., St. Louis, MO 63133, USA Office Facility: 1400 Ferguson Ave., St. Louis, MO 63133, USA
Product Type: Audio Amplifier Complies with the following Standards:
Safety: EN60065, E60065, C22.2, UL6500 and/or UL813 EMC: Directive 89/336/EEC, EN55103, EN55013, EN61000,
and/or FCC 47CFR 15B clA
Supplementary information provided by:
SLM Electronics - R & D Engineering
1901 Congressional Drive, St Louis, MO 63146, USA
Tel.: 314-569-0141, Fax: 314-569-0175
4
CLEAN CHANNEL
OVERDRIVE CHANNEL
BOTH CHANNELS
1 2 3 4 5 6 7 8
1. Guitar Input: Connect your instrument
here by means of a shielded signal cable. This input signal to this jack is not attenu­ated and accommodates instruments with standard output signals. If your instrument has a strong output signal, use the Accordion Input (#2).
2. Accordion Input: Connect your instru­ment here by means of a shielded signal cable. The signal to this jack is attenuat­ed 6dB to accommodate instruments with stronger output signals.
3. Gain: Use this control to adjust the amount of overdrive distortion for the overdrive channel. This control works in conjunction with the Master control (#8).
4. Volume: Use this control to adjust the output level of the clean channel.
5. Treble: Use this control to adjust the output level of the high frequencies for both channels. This control provides 22dB of cut or boost at 10kHz.
6. Mid: Use this control to adjust the out­put level of the middle frequencies for both channels. This control provides 5dB of cut or boost at 500Hz.
7. Bass: Use this control to adjust the output level of the low frequencies for both channels. This control provides 22dB of cut or boost at 150Hz.
8. Master: Use this control to adjust the output level of the overdrive channel. This control works in conjunction with the Gain control (#3) to produce sounds from slightly distorted to all-out screaming – and everything in between.
9. Tremolo Speed: Use this control to adjust the speed of the built-in tremolo effect. With the control fully counter clock­wise, the effect is slow and mellow . As the control is rotated clockwise, the speed of the effect increases.
10. Tremolo Intensity: Use this control to adjust the intensity (or depth) of the built-in tremolo effect. With the control fully counterclockwise, none of the tremo­lo effect is applied. As the control is rotat­ed clockwise, the amount of tremolo increases.
11. Reverb:Use this control to adjust the amount of reverberation applied to both channels. With the control fully counter­clockwise, no reverb is applied. As the control is rotated clockwise, the amount of reverb increases.
The Front Panel:
+ 8 hidden pages