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Starting at the right-hand side of the panel, insert

a screw of proper length into the center hole in the
panel. marked B on the template. On the back of the
panel, align a mounting strip with the holes in the

panel and tighten the screw until the screwhead is
pulled slightly into the wood.

Repeat this procedure to attach the mounting

strip to the left side of the panel.

6. Attach the PANLOC Brackets

Using two screws of proper length in the A holes on

each side, attach the PANLOC brackets to the cabi-
net panel; the short flange is mounted against the
front (face) of the cabinet panel. The screws pass

through the PANLOC bracket flange, the cabinet

panel, and then through the mounting strips
previously mounted.

7. Install the Instrument
Guide the AC power cord through the panel opening
to the back of the cabinet; then, slide the instrument

into the opening carefully so that the rails on the
bottom of each side of the chassis engage the
tracks on the mounting brackets. Continue to slide
the instrument into the cabinet until it is stopped by
the adjust position latches. Press the latches in-
ward, this permits the instrument to slide into the
cabinet until its front panel is flush with the cabinet

panel. Depress the PANLOC buttons at the lower left
and right corners of the instrument panel to lock the
unit firmly in the cabinet. Depressing the PANLOC
buttons again will unlock the instrument so that it
can slide forward to the adjust position; if you press

inward on the adjust position latches then you can
remove the instrument from the cabinet.

5 Install the Mounting Strips

In the hardware package you will find two mounting
strips and two sets of machine screws. For panels

that are less than ½ inch thick, use the ¾ inch

screws: for panels that are more than ½ inch thick,

use the 1 ¼ inch screws.

3

Summary of Contents for MC 2155

Page 1: ...THE MclNTOSH MC 2155 SOLID STATE STEREO POWER AMPLIFIER Reading Time 31 Minutes Price 2 00...

Page 2: ...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 Record the pur chase date here Purchas...

Page 3: ...esented when the instrument is taken to the service agency 3 Always have service done by a Mclntosh authorized service agency If the instrument is modified or damaged as a result of unauthorized repai...

Page 4: ...he template as a straight edge 3 Drill Holes Use a drill with a 3 16 inch bit held perpendicular to the panel and drill the six A and B holes Then using a drill bit slightly wider than the tip of your...

Page 5: ...the cabinet then slide the instrument into the opening carefully so that the rails on the bottom of each side of the chassis engage the tracks on the mounting brackets Continue to slide the instrumen...

Page 6: ...re capable of handling the power output of the amplifier Selection of the proper gauge wire to connect the loudspeakers preserves the quality of sound repro duction for which the loudspeakers have bee...

Page 7: ...d 16 ohms are accomodated Output connections are made by connecting to the output terminals as fisted below Note that neither output terminal is at ground potential For monophonic operation using the...

Page 8: ...Stereophonic Connections PROGRAM SOURCE MUST BE IN STEREO POSITION FOR STEREO PROGRAMS 6 RIGHT SPEAKER LEFT SPEAKER...

Page 9: ...Mono Bridge Connections PROGRAM SOURCE CONNECTIONS FOR 8 OHM SPEAKER ILLUSTRATED CONNECTIONS SHOWN FOR MONO WHEN MODE SWITCH IS IN THE MONO BRIDGE POSITION SPEAKER 7...

Page 10: ...Mono Parallel Connections CONNECTIONS FOR 4 OHM SPEAKER ILLUSTRATED SPEAKER CONNECTIONS SHOWN FOR MONO WHEN MODE SWITCH IS IN THE MONO PARALLEL POSITION PROGRAM SOURCE 8...

Page 11: ...el Ordinary meters lack the capability of in dicating the short interval information in a sound wave The mass of the meter movement is too great to respond to the nearly instantaneous changes in music...

Page 12: ...rol the AC power from a preamplifier control center leave the switch in the ON position Be sure the AC cord of the MC 2155 is plugged into the controlled outlets on the rear of the preamplifier contro...

Page 13: ...ght MONO channel input jack accepts signal and the Left channel input jack is disconnected INPUT LEVEL The Input sensitivity of the MC 2155 is 0 75 volts or 2 5 V depending on the position of the INPU...

Page 14: ...common connections RATED POWER BAND 20 Hz to 20 000 Hz TOTAL HARMONIC DISTORTION STEREO 0 02 maximum harmonic distortion at any power level from 250 milliwatts to 150 watts from 20 Hz to 20 000 Hz bo...

Page 15: ...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...

Page 17: ...ch or turn on delay system The first stage of the output power amplifier is a differential transistor pair biased for best linearity The offset to the differential pair is adjustable Cor rect adjustme...

Page 18: ...ier is thereby simplified The test circuit uses logic counter BCD decoder lamp driver and voltage comparator integrated cir cuits METER CIRCUIT The meter circuit has three basic sections a loga rithmi...

Page 19: ...17 Block Diagram MclNTOSH MC 2155 STEREO POWER AMPLIFIER...

Page 20: ...2 CHAMBERS ST BINGHAMTON N Y 13903 2699 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...

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