Vac Vintage Preamplifier User Manual download pdf

Valve Amplification Company

1731 Northgate Boulevard, Sarasota, FL 34234 USA

Telephone 941-359-2066 / Fax 941–359-2057

www.vac-amps.com

VAC VINTAGE PREAMPLIFIER Mk III

Operating Instructions

DO NOT OPEN THIS UNIT - THERE ARE NO USER SERVICEABLE PARTS INSIDE.

DO NOT TOUCH TUBES UNTIL UNIT HAS BEEN SWITCHED OFF FOR 5

MINUTES. TUBES BECOME HOT IN USE. DO NOT EXPOSE THIS UNIT TO

MOISTURE. DO NOT PLUG INTO AN AC SOURCE UNTIL ALL CONNECTIONS

ARE COMPLETED.

Introduction

The Vintage Preamplifier features a zero-global-feedback, Class A, triode line amplifier &

controller, and a Class A triode phono amplifier employing both passive and active RIAA

equalization techniques. It is to be operated from the voltage labeled on the back panel, 50-

60 Hz. The fuse is a slow blow type of the size labeled on the back of the unit.

Connection

1.Complete all connections before connecting the AC cord to the wall outlet.

2.At turn on, the volume control should be full counter-clockwise and the mode switch

should be set to MUTE. Also, always MUTE the preamp before switching power off,

to prevent damage to amplifiers or speakers.

3.Allow 30 seconds for warm up before leaving MUTE.

4.The Vintage Preamplifier inverts phase from all inputs to the main outputs. To correct

for this reverse the speaker connections in both channels. Output to the tape jacks

does not invert.

5.In normal operation no signal is present at the tape output jacks. This is done to

ensure that no degradation of sound occurs due to input non-linearities or loading

1 2 3

Valve Amplification Company 1

Summary of Contents

Page 1 - Valve Amplification Company

Valve Amplification Company1731 Northgate Boulevard, Sarasota, FL 34234 USATelephone 941-359-2066 / Fax 941–359-2057www.vac-amps.com VAC

Page 2

effects of the tape recorder. To record, select the record enable position ("TAPE ON")of the TAPE MONITOR switch. If you wish to monitor the

Page 3

mechanical or acoustic stimulation encountered when the unit is properly installed andplaying music. Replace the offending tube if excessive mechanica

Comments to this Manuals

No comments

Vac Vintage Preamplifier User Manual

Browse online or download User Manual for Audio Vac Vintage Preamplifier. VAC Vintage Preamplifier User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Audio Vac Vintage Preamplifier