THE MclNTOSH MC 2300 SOLID STATE STEREO POWER AMPLIFIER Price $1.
The Mclntosh MC 2300 is a high quality, extremely high power, solid state stereo amplifier. Because of the high power available it is necessary to emphasize some prudent and safe operating conditions. 1. Never connect or disconnect inputs or outputs while the amplifier is turned on. Loudspeakers can be damaged or destroyed by the high power available from the instrument. 2. Never operate the amplifier with the power cord plugged into an auxiliary AC power outlet on source equipment.
Your MC 2300 Stereo Power Amplifier will give you many years of pleasant and satisfactory performance. If you have any questions concerning the operation or maintenance of this instrument, please contact: CONTENTS GUARANTEE.... INSTALLATION.... CUSTOMER SERVICE 1 3 HOW TO CONNECT....4,5 Stereophonic.... 6 Monophonic.... 7 Mclntosh Laboratory Inc. 2 Chambers Street Binghamton, New York 13903 Phone: 607-723-3512 FRONT PANEL INFORMATION.... 8 PERFORMANCE LIMITS.... 9 TYPICAL PERFORMANCE C H A R T S .
Installation rails are attached to the front panel by 8 #10-32 machine screws and to each side by 4 small clips. Remove both the front panel screws and the four clips from each side for cabinet mounting. The opening to fit the unit is 17¼ by 10¼ inches. Installation of the MC 2300 requires careful thought about three important factors. They are the electrical power to operate the unit, the weight and the heat generated when the MC 2300 is operating.
How to Connect operation it is not necessary to use the same impedance loudspeaker on each output. Connect each channel for the impedance desired. INPUT Stereo or twin amplifier operation: Use shielded cables to connect the signal from the preamplifier or signal source to the power amplifier. All connection are made on the back panel of the MC 2300.
Monophonic or Single Channel operation: For monophonic constant voltage line operation: When the MC 2300 is used as a monophonic or single channel power amplifier the two channels are combined to produce output up to 600 watts. The output must be tied together at the appropriate load impedance tap. In connecting a load to the MC 2300 for single channel operation connect the common side of the load to the LEFT CHANNEL OUTPUT terminal marked COM., the other lead as below.
STEREOPHONIC CONNECTIONS PROGRAM SOURCE TO 120 VAC DO NOT CONNECT LINE CORD INTO PREAMPLIFIER AC OUTLETS. IF REMOTE POWER CONTROL IS NEEDED USE AN EXTERNAL RELAY.
MONOPHONIC CONNECTIONS PROGRAM SOURCE To 120 VAC DO NOT CONNECT LINE AC OUTLETS. IF REMOTE POWER CONTROL tS NEEDED USE AN EXTERNAL RELAY.
Front Panel Information Monitoring of the output power is done at the primary or input of the autoformer resulting in true power readings regardless of output impedance selected. LEFT GAIN The left gain control is used to control gain or volume of the left channel. Clockwise rotation increases gain.
Performance Limits 12 Hz to 35,000 Hz, +0 - 1.5 dB at one-half rated power NOISE AND HUM 90 dB below rated output PERFORMANCE GUARANTEE Performance Limits are the maximum deviation from perfection permitted for a Mclntosh instrument. We promise you that the MC 2300 you buy must be capable of performance at or exceeding these limits or you qet your money back. Mclntosh is the only OUTPUT POWER MONITOR METER Meter is calibrated to read +3 db when amplifier produces 300 RMS watts or 600 peak watts.
HARMONIC DISTORTION vs. POWER OUTPUT Typical Performance Charts .5 .4 .3 .2 .1 0 .1 1 10 100 1K POWER OUTPUT IN AVERAGE WATTS POWER BANDWIDTH 400 360 320 280 240 200 160 120 80 40 0 10 100 1000 FREQUENCY HERTZ 10K 100 K 100 1000 INTERMODULATION DISTORTION .7 .6 .5 .4 .3 .2 .1 0 .
Technical Description at frequencies above 50,000 Hz. This increased feedback reduces the noise level of the input section where the signal to noise level is more critical, it also rolls off the frequency response above 50,000 Hz. Resistors R9 and R10 with C5 C6 form a filter chain to filter the ± 21 volts used to supply the input amplifier. Left and right channels operate identically. The output of the left and right input amplifiers is fed to the mono/stereo switch.
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trol the positive portion of the output signal while transistors Q118, 122, 126, 130, 134, 138 control the negative half of the output signal. These 12 output transistors work together forming a series push-pull output capable of delivering extremely high currents. The output transistors are mounted on oversized black anodized heat sinks. Two long life quiet running fans draw air over the heat sinks and out the rear of the unit.
nearly instantaneous changes in music program material. Mclntosh has developed circuits that permit the meters of the MC 2300 to respond to the short interval power in a sound wave to an accuracy of LIMITER CIRCUIT In the power amplifier circuit the amount of signal output has a linear relationship with the input signal. In the event of a short circuit or severe impedance mismatch the limiter circuit will protect the output transistors against failure.
C203 act as a meter upswing accelerator while the RC combination R209, C201 act as a pulse or time stretching aid. Variable resistor R213 is used to adjust the meter to read exactly " + 3" at 300 watts RMS. All components of the meter circuit have been selected and designed to have maximum flat response at the frequency extremes. A reading of a given power is correct regardless of the frequency of the signal. The MC 2300 contains two independent meters and meter circuits.
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MCINTOSH LABORATORY INC. 2 CHAMBERS ST., BINGHAMTON, N. Y. 13903 607-723-3512 Design subject to change without notice. Printed in U.S.A.
