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STEREO

 POWER

AMPLIFIER

MC24O

CONTENTS

GENERAL DESCRIPTION 1

TECHNICAL DESCRIPTION 1

PANEL FACILITIES 4

INSTALLATION 5

CONNECTIONS 5

Input—Stereo 5
Input—Twin Amp 5
Input—Mono 6

Output—Stereo or Twin Amp 6

Output—Mono 6

Line Output—Stereo or Twin Amp 6
Line Output—Mono 7

AC Power 7

OPERATION 7

ADJUSTMENTS 7

GUARANTEE 8

OWNER'S MANUAL

MC24

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Содержание MC24O

Страница 1: ... DESCRIPTION 1 PANEL FACILITIES 4 INSTALLATION 5 CONNECTIONS 5 Input Stereo 5 Input Twin Amp 5 Input Mono 6 Output Stereo or Twin Amp 6 Output Mono 6 Line Output Stereo or Twin Amp 6 Line Output Mono 7 AC Power 7 OPERATION 7 ADJUSTMENTS 7 GUARANTEE 8 OWNER S MANUAL MC24O ...

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Страница 3: ...ity of the MC240 permits it to be used as a monophonic amplifier that delivers 80 watts or as two separate 40 watt amplifiers with each chan nel amplifying completely separate pro grams or as two amplifiers for use with an electronic crossover network Such flexi bility permits maximum use for greatest return from your investment TECHNICAL DESCRIPTION The patented Mclntosh Unity Coupled circuit and...

Страница 4: ...back loop which reduces their distortion reduces their internal generator resistance and reduces their balance requirements The Mclntosh circuit in reality perfects push pull high efficiency output circuits Leakage inductance lack of coupling between the primary and secondary wind ings of the output transformer limits the high frequency response of an amplifier The primary and secondary windings o...

Страница 5: ...70 7 volts Mono Isolated from ground 25 volts Center tap internally grounded 140 volts One side internally grounded 70 7 volts Internal Impedance Less than 10 of rated load impedance Input Input impedance 250 000 ohms Input sensitivity 0 5 volts to 30 volts through gain control with input switch in MONO or TWIN AMP position With the switch in the STEREO position sensi tivity is 2 0 volts through a...

Страница 6: ...ut has a GAIN control that permits connecting signal sources up to 30 volts without overloading the amplifier s input The input impedance is 250 000 ohms OUTPUT The two barrier terminal strips marked OUTPUT provide stereo connections for the normal speaker impedances of 4 ohms 8 ohms and 16 ohms For monophonic oper ation connections for 2 ohms 4 ohms 8 ohms 16 ohms and 32 ohms are provided The ter...

Страница 7: ...and must be attached to the amplifier bottom at each end Turn the MC240 over with the transform ers down and place it on a piece of cloth or cardboard to prevent scratches The ampli fier is shipped with 4 plastic feet on the bot tom cover Remove the 4 plastic feet Re move the three self tapping screws at one end of the amplifier that hold the bottom cover to the chromium chassis Place the square e...

Страница 8: ... the output volt ages are not the same phase and amplitude If the speaker impedance is 2 ohms 4 ohms 8 ohms 16 ohms 32 ohms Connect one speaker lead to the screw marked LEFT COM and the other to LEFT 4 LEFT 8 LEFT 16 RIGHT 8 RIGHT 16 Connect a wire between LEFT COM and RIGHT COM LEFT COM and RIGHT COM LEFT COM and RIGHT COM RIGHT COM and LEFT 8 RIGHT COM and LEFT 16 Connect another wire between LE...

Страница 9: ...r the following adjustments have been completed the MC 240will operatewithoutanyfurtherattention ADJUSTMENTS LINE VOLTAGE The LINE VOLTAGE switch should be set to the position that more closely matches the average line voltage in your area The local electric power company can usually tell you the average line voltage in your area If the line voltage is between 105 volts and 120 volts put the LINE ...

Страница 10: ...does not depend on the critical adjustment of bias or balance controls in the output circuit The patented Mclntosh circuit delivers its adver tised specifications without any need for these controls and is not dependent on care fully balanced tubes for its performance With Mclntosh you can install the amplifier and forget it The MC240 you have purchased will give you years of pleasant and satisfac...

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Страница 12: ...2 CHAMBERS STREET BINGHAMTON N Y Phone Area Code 607 723 5491 LABORATORY INC Made in U S A PRINTED IN U S A 1M 038 002 ...

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