McIntosh MAC 1900 Manuel d'utilisateur Page 1

THE MAC 1900 SOLID STATE AM FM/FM STEREO RECEIVERPrice $1.25

What the Controls Do and How to Use ThemVOLUME ON/OFF:The VOLUME control regulates the loudness inboth channels. The VOLUME control has been pre-cisio

Using the Tuning DialTUNING DIALThe MAC 1900 has three dial scales:1. AM - Marked 55 to 160 kHz2. FM-Marked 88 to 108 MHz3. Logging scale - Marked 0 t

The TAPE MONITOR switches are mechanicallyinterlocked to prevent simultaneous monitoring fromtwo tape recorders. If one button is at the IN position,i

justed to optimum at the factory using precision testinstruments.OUT . . . MUTING disconnected.IN ... between station noise suppressed on FM.SPEAKERWh

continues as usual. When the switch is in the OUTposition normal program from the source is heard.HOW TO COPY TAPE1. Put the tape to be copied on the

HARMONIC DISTORTION: Does not exceed 1% at30% modulationFREQUENCY RESPONSE: 3500 Hz at —6 dB downADJACENT CHANNEL SELECTIVITY: 30 dB mini-mum IHFIMAGE

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Technical DescriptionAUDIO SECTIONEach channel of the MAC 1900 has four basicsections. They are: phono or low level amplifier, tapeor high level ampli

the rear of the MAC 1900 connect the filter amplifieroutput (PREAMP out) and power amplifier input(AMP input).At the input of the power amplifier, two

plifier. Each gate of the transistor is internally pro-tected by zener diodes against incoming transientsthat may occur due to external conditions. Us

ceived, the automatic FM stereo switching circuitactivates the multiplex decoding circuit. This lightsthe stereo indicator. The circuit switching is a

Block Diagram21

McINTOSH LABORATORY INC.2 CHAMBERS ST., BINGHAMTON, N. Y. 13903607-723-3512Design subject to change without notice.Printed in U.S.A.038-674BE122003

Your MAC 1900 AM-FM/FM stereoreceiver will give you many yearsof pleasant and satisfactory performance.If you have any questions concerningthe operati

Adequate ventilation extends the trouble-free lifeof electronic instruments. It is generally found thateach 10° centigrade (18° F) rise in temperature

How to Connect1. CONNECTING TAPE RECORDERSTo Record:Connect a cable from the L TAPE OUT 1 jackto the left high level input of a tape recorder.Connect

2. CONNECTING RECORD PLAYERSCONNECTING A 75 OHM ANTENNAThe MAC 1900 has been shipped with shortingplugs in the phono inputs. Remove the shortingplugs

Connecting - Record PlayersMaximum Performance IndicatorAntenna and GroundFM ANTENNAFM ANTENNA INPUTGROUND TOWATER PIPEOR ROD IN EARTHTORECORD CHANGER

CONNECTING LOUDSPEAKERS:The MAC 1900 Power Amplifier is designed forstereo connection only. Do not connect the MAC1900 for monophonic (one loudspeaker

CONNECTINGMCINTOSHLOUDSPEAKERSWITH THEENVIRONMENTALEQUALIZERMQ101 ENVIRONMENTAL EQUALIZERRIGHT SPEAKERLEFT SPEAKER7REMOTE 1LEFTSPEAKERREMOTE 1RIGHTSPE