AMPEG SVTDI Owner's Manual

User ’s Guide

The harmonically rich sound and legendary performance of
AMPEG products are redefined in the SVTDI. This Vacuum Tube Direct
Injection device delivers unsurpassed quality, reliability and tonal flexi­bility in a compact, rock-solid package with exceptionally high cosmet­ic appeal. The SVTDI is easy to operate and is well suited for live per­formances or for use in the recording studio. Acoustic and electric
instruments will benefit from use of the SVTDI.

The SVTDI Vacuum Tube Direct Injection can take an unbalanced
line level signal (bass, guitar, keyboard, etc.) and convert it into a bal­anced signal which can be sent through a long snake to that mixing
board so far from the stage - without degradation of the signal! The
SVTDI offers direct or tube-buffered 1/4” and XLR output connections,
and has a switchable 6dB input attenuator to handle “hot” signals.

Introducton to the Ampeg SVTDI:

SVTDI

V acuum Tube Direct Injection

2

IMPORTANT SAFETY INSTRUCTIONS

• READ, FOLLOW, HEED, AND KEEPALL INSTRUCTIONS AND WARNINGS.

• DO NOT OPERATE NEAR ANYHEAT 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 PANEL OF 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.

SVTDI

V acuum Tube Direct Injection

3

Declaration Of Conformity

#35, Effective 01-01-2001

Manufacturer’s Name: SLM Electronics

Production Facility: 1901 Congressional 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.: [phone], Fax: [phone]

• PAD SWITCH: Attenuates the input signal to accomodate “hot” pickups

• DIRECT/TUBE SWITCHES: Separate switches for the Thru and Balanced

Output jacks - giving you the choice of tube buffered or direct signals at
either output jack

• GROUND LIFT SWITCH: (Balanced Output jack) Allows you to eliminate

hum caused by virtually any situation - whether performing live, or work­ing in the studio

• TRANSFORMER BALANCED OUTPUT: The high quality, shielded XLR

connector uses an electronic transformer to provide the ultimate balanced
output signal

• AMPEG QUALITY AND COSMETICS: Lets the world know you mean business

Features:

The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . .4

The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . .5

Important Information About Tubes

And Tube Products . . . . . . . . . . . . . . . . . . . . . .6-7

System Block Diagram . . . . . . . . . . . . . . . . . . . .7