McIntosh MC2505, Owner'S Manual

Page 1: ...MC2505 SOLID STATE PRICE 1 25 STEREO POWER AMPLIFIER MC25O5...

Page 2: ......

Page 3: ...o you Nearly all of the Mclntosh equipment ever made is still useable or in use though it may have been made twenty years ago GENERAL DESCRIPTION 2 TECHNICAL DESCRIPTION 2 3 LOCKING METERS 4 PERFORMAN...

Page 4: ...d free of charge Fill in the service contract applica tion found in the owner s packet now 2 A two stage preamplifier with three transistors in each channel increases the input voltage 16 dB There are...

Page 5: ...TORING CIRCUIT prevents failure of the power output transistors due to excessive mismatch of the output When your MC2505 operates normally the SENTRY MONITORING CIRCUIT has no effect on signals passin...

Page 6: ...ecorded on the CBS Test Record STR100 on your phonograph 3 Turn the LEFT GAIN control until the left meter indicates 0 4 Turn the RIGHT GAIN control until the right meter indicates O 5 Write down the...

Page 7: ...dB 20 100 IDEAL RIAA SYSTEM RESPONSE USING CBS STR 100 TEST RECORD FREQUENCY IN Hz 1k 10k 20k 4 2 0 2 4 6 8 10 12 14 16 13 20 IDEAL RIAA SYSTEM RESPONSE USING CBS STR 100 TEST RECORD 20 100 FREQUENCY...

Page 8: ...dB 4 2 0 2 4 6 8 10 12 14 16 18 20 4 2 0 2 4 6 8 10 12 14 16 18 20 20k 10k 1k FREQUENCY IN Hz IDEAL RIAA SYSTEM RESPONSE USING CBS STR 100 TEST RECORD 20 IDEAL RIAA SYSTEM RESPONSE USING CBS STR 100...

Page 9: ...7...

Page 10: ...GE INTERMODULATION DISTORTION 0 6 0 5 0 4 0 3 0 2 0 1 10 POWER OUTPUT IN EQUIVALENT RMS WATTS 8 POWER OUTPUT IN RMS WATTS 20 Hz 2kHz 20kHz 100 10 PERCENTAGE HARMONIC DISTORTION 0 6 0 5 0 4 0 3 0 2 0 1...

Page 11: ...TAGES 25 volts STEREO DAMPING FACTOR 14 at 4 ohms output 27 at 8 ohms output 13 at 16 ohms output INPUT IMPEDANCE 200 000 ohms INPUT SENSITIVITY 0 5 volt Level control provided for higher in put volta...

Page 12: ...N A HURRY POWER OFF ON Turns the amplifier on off SPEAKER OFF ON Turns the speaker on off HEADPHONE To connect a set of low impedance stereo headphones METER RANGE Adjust meter readings to power outpu...

Page 13: ...sition the plastic mounting template over the area Secure the mounting strips to the rear of the cabinet panel using two screws from the hardware package Insert the screws in the center holes of the c...

Page 14: ...UP TO 117 V AC OUTLET ALTERNATE SPEAKER LEAD CONNECTION TO BE USED WHEN PHASE SWITCH AND PHONE JACK ON C24 ARE TO BE USED 12 TUNER ROTATOR DIRECTIONAL FM ANTENNA PREAMPLIFIER MC2505 POWER AMPLIFIER AC...

Page 15: ...the number corresponding to the speaker impedance on the RIGHT OUTPUT barrier strip The only adverse effect on the operation of a Mclntosh amplifier when it is improperly matched is a reduction in th...

Page 16: ...BLOCK DIAGRAM 14...

Page 17: ...livers watts 0 In this position of the meter range switch the amplifier will deliver 50 watts when the meter indicates 3 dB with meter indication of 0 the amplifier delivers 25 watts with a meter indi...

Page 18: ...e service offered under the standard 90 day guarantee will apply on this equipment Your MC2505 stereo power amplifier will give you many years of pleasant and satisfactory performance If you have any...

Page 19: ......

Page 20: ...MclNTOSH LABORATORY INC 2 CHAMBERS ST BINGHAMTON N Y 13903 607 723 3512 Design subject to change without notice Printed in U S A 038 341 BE042003...