Related Manuals for McIntosh MC 2250
Summary of Contents for McIntosh MC 2250
- Page 1 T H E M c l N T O S H M C 2 2 5 0 SOLID S T A T E S T E R E O P O W E R A M P L I F I E R Reading Time: 31 Minutes Price $2.00...
- Page 2 HAZARD, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. The Mclntosh you have purchased is a Model MC 2250. It has a serial number located on the rear panel of the chassis. Record that serial number here: Serial Number The model, serial number and purchase date are im- portant to you for any future service.
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Page 3: Table Of Contents
Your MC 2250 Stereo Power A m p l i f i e r is d e s i g n e d to perform to its s p e c i f i c a t i o n s for many years. -
Page 4: Installation
The MC 2250 can be housed in a Mclntosh L54 With adequate ventilation the instrument can be cabinet, installed in a custom cabinet or mounted in mounted position. - Page 5 VENTILATION 1/4" DIA. (2 HOLES) CUTOUT PANEL CUTOUT FRONT PANEL MTG.SURFACE Fig. 2. Top view of the panel cutout and mounting shelf. INSTALLATION PROCEDURE cause severe damage. The screw length must not exceed the shelf thickness by more than ½". 1.
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Page 6: How To Connect
MONOPHONIC OPERATION MAXIMUM WIRE LENGTHS Wire For 4 Ohm Load For 8 Ohm Load For monophonic operation the MODE switch on the back panel of the MC 2250 must be placed in one Gauge Feet Meters Feet Meters of the MONO positions. For the proper choice, see 4.57... - Page 7 This is convenient for larger home back- ground music systems or for industrial installations. When the MC 2250 is used in MONO for constant Appropriate line matching transformers must be used voltage line operation, the MONO PARALLEL con- at each speaker location.
- Page 8 Stereophonic Connections...
- Page 9 Mono-Bridge Connections...
- Page 10 Mono-Parallel Connections...
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Page 11: Front Panel Controls And How To Use Them
PARALLEL operation, use the RIGHT/Mono GAIN trol the AC power from a preamplifier control center, plug the AC cord of the MC 2250 into a controlled control. The LEFT channel control is not used in the outlet on the rear of the preamplifier control center MONO mode of operation. - Page 12 SYSTEM TEST The MC 2250 contains a new automatic test cir- cuit. Each time the amplifier is turned on, an LED digit illuminates to indicate which test is being per- formed. Starting with the numeral 7, it makes the re- quired measurement and verifies if it is within toler- ance by flashing the green Power Guard lights.
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Page 13: Rear Panel Information
AC POWER For stereo operation, output impedances of 1, 2, 4 The input to the MC 2250 is 120 volts 50/60 Hz at and 8 ohms have been provided on secure, screw up to 12 amps. The primary circuit is protected by a type barrier strips for each channel. -
Page 14: Performance Limits
Mclntosh instru- INTERMODULATION DISTORTION ment. We promise you that when you purchase a new MC 2250 from a Mclntosh franchised dealer, it STEREO will be capable of or can be made capable of perfor- 0.02% maximum if instantaneous peak power out-... -
Page 15: Performance Charts
Performance Charts PERFORMANCE CHARTS ARE FOR ONE STEREO CHANNEL WITH BOTH CHANNELS OPERATING. MONO OPERATION IS IDENTICAL EXCEPT POWER IS DOUBLED FOR THE SINGLE MONO OUTPUT. -13-... - Page 16 -14-...
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Page 17: Technical Description
1, 2, 4 and 8 BRIDGE MODE is selected the left channel input am- ohms. The MC 2250 will deliver full power over the plifier is used as a phase inverter. The output chan- nels then operate 180°... - Page 18 5 volts for the logic circuits. Thermistors are used in the power transformer When AC line power is applied to the MC 2250 the primary circuit to limit the turn-on current. System Test circuit functions to verify operating...
- Page 20 MclNTOSH LABORATORY INC. 2 CHAMBERS ST., BINGHAMTON, N.Y. 13903-9990 607-723-3512 The continuous improvement of its products is the policy of Mclntosh Laboratory Incorporated who reserve the right to improve design without notice. Printed in U.S.A. 039315...
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