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INSTALLATION IN A CABINET

To prepare the MA 5100 for installation remove the

plastic protective covering. Turn the MA 5100 upside
down so that it rests on its top on the shipping pallet.
Remove the four plastic feet fastened to the bottom
of the chassis.

Next place the mounting brackets, the parts bag and

the mounting template for easy accessibility.

The professional mounting design eliminates the need

for any shelf or bracket to support the MA 5100. It is

completely supported by its own mounting brackets.

Position the plastic mounting template over the area

of the cabinet panel to be cut out for installation.

The design of the mounting template allows you to

position or locate the cutout from the front or rear of

the panel to which the instrument is to be mounted.

If the cutout is to be located from the rear of the panel,

the following steps will help you.

On the back of the cabinet panel, scribe a vertical
centerline through the exact center of the area in which
the cutout is to be made.

Place the template against the back of the panel and

match the template centerline with the centerline on the
cabinet panel.

Make sure that there is at least ¼ inch clearance be-

tween the bottom of the dashed line of the cutout area

on the template and any shelf or brace below the pro-

posed cutout.

Mark the two locating holes ("C" holes on the mount-

ing template).

Drill the two locating holes. Be certain the drill is per-

pendicular to the panel.

Now position the template on the front of the panel by

aligning the "C" locating holes on the template with
the drill holes.

Insert the screws in the center holes of the cabinet

panel ("B" holes on the template) and tighten. The

screw head should pull into the wood slightly. (Use two
¾ inch long screws for panels under ½ inch, or two 1¼
inch long screws for panels ½ inch thick and larger.)

Attach the mounting brackets to the cabinet panel us-

ing four screws.

Secure the mounting strips to the rear of the cabinet

panel using two screws from the hardware package.

Place the template over the mounting screws. The
mounting screws should be centered in the "A" and
'B" holes on the template. The sides of the mounting
brackets should match the vertical dash lines on the
template. If necessary, loosen the screws and push the
brackets into alignment and retighten.

Insert the power cord through the opening. Carefully

slide the MA 5100 into the opening so the rails on
the bottom of the equipment slide in the track of the

mounting brackets. Continue to slide the instrument in

until the front panel is against the cabinet panel.

Secure the instrument to the mounting brackets by in-

serting the two knurled headed screws (from the hard-

ware package) into the back of the MA 5100 chassis.
These screws pass through holes in the back flanges

of the mounting brackets.

8

With the template in place against the cabinet panel,

mark the "A" and "B" drill holes and the four small

holes that identify corners of the cutout. Join the corner

marks with a pencil. The edge of the template can be
used as a straight edge.

IMPORTANT: DRILL THE 6 HOLES BEFORE MAKING

THE CUTOUT
Accurately drill the three holes on each side of the cut-

out area with a

 3

/

16

 inch drill.

With the saw on the INSIDE OF THE PENCIL LINES
carefully cut out the rectangular opening.

Summary of Contents for MA 5100

Page 1: ...PRICE 1 25 STEREO PREAMPLIFIER POWER AMPLIFIER MA51OO ...

Page 2: ......

Page 3: ...u Nearly all of the Mclntosh equipment ever made is still useable or in use though it may have been made twenty years ago CONTENTS GENERAL DESCRIPTION TECHNICAL DESCRIPTION BLOCK DIAGRAM PERFORMANCE CHARTS SPECIFICATIONS INSTALLATION IN A HURRY TYPICAL CONNECTION CONNECTING BALANCING LISTENING FRONT PANEL CONTROLS GUARANTEE 2 3 4 5 6 7 8 9 10 11 12 12 13 14 15 16 Your purchase of a Mclntosh instru...

Page 4: ...connection wire resistor capacitor is checked and rechecked All specifications are checked Mclntosh testing takes time The extra investment in thorough testing assures you of greater musical enjoyment The performance of your Mcln tosh MA 5100 is backed by a money back guarantee Only Mclntosh gives you a money back guarantee of performance Your MA 5100 must be capable of meeting its published speci...

Page 5: ...r The first two transistors are emitter followers The first emitter follower is driven from the output of the volume control The second emitter fol lower is direct coupled to the third stage The third stage is a high gain voltage amplifier Signals pass through the input emitter follower and then couple to the second and third tone control stages through the tone control network The tone control co...

Page 6: ...rating conditions To further insure reliability a special power output SENTRY MONITOR ING CIRCUIT prevents failure of the power output transistors due to abnormal mismatch of the output When your MA5100 operates nor mally the SENTRY MONITORING CIRCUIT has no effect on signals passing through the power amplifier If the power dissipation should rise above normal operation the SENTRY MONITORING CIRCU...

Page 7: ...BLOCK DIAGRAM 5 ...

Page 8: ...OWER OUTPUT EQUIVALENT WATTS RMS FREQUENCY IN HERTZ 10000 20000 1000 100 20 6 5 4 3 2 PERCENT INTERMODULATION DISTORTION 1 0 1 100 6 1 0 20 15 10 5 0 5 10 15 20 RESPONSE IN DB POWER OUTPUT WATTS RMS 60 50 40 30 20 10 0 10 100 10K 100K PERCENT HARMONIC DISTORTION 4 3 2 1 100 10 6 5 ...

Page 9: ...hono input LEFT PLUS RIGHT OUTPUT Adjustable 0 to 6 volts from generator impedance of 5 000 ohms BASS CONTROLS 18 dB at 20 Hz with friction clutch for independent adjustment of each channel TREBLE CONTROLS 18 dB at 20 000 Hz with friction clutch for inde pendent adjustment of each channel HF FILTER Flat or 5 000 Hz cutoff 12 dB per octave LF FILTER Flat or 50 Hz cutoff 12 dB per octave POWER REQUI...

Page 10: ...es on the template with the drill holes Insert the screws in the center holes of the cabinet panel B holes on the template and tighten The screw head should pull into the wood slightly Use two inch long screws for panels under inch or two 1 inch long screws for panels inch thick and larger Attach the mounting brackets to the cabinet panel us ing four screws Secure the mounting strips to the rear o...

Page 11: ...ow volume listening and still hear full frequency range 7 HF FILTER in reduces high frequency noise such as record surface noise 8 LF FILTER in reduces low frequency noise such as turntable rumble 9 HEADPHONE to connect a set of low im pedance stereo headphones 10 POWER turns system ON and OFF 11 SPEAKER turns speakers ON and OFF for headphone listening MUST BE ON FOR NORMAL LISTENING 12 PHASE cor...

Page 12: ... R D P L A Y E R 1I RECORD P L A Y E R 2 T A P E P L A Y E R NO S E L F C O N T A I N E D E L E C T R O N I C S T V T A P E R E C O R D E R WITH SELF C O N T A I N E D E L E C T R O N I C S RIGHT L O U D S P E A K E R L E F T LOUDSPEAKER ...

Page 13: ...ER RECORD PLAYER 1 RECORD PLAYER 2 TAPEPLAYER NOSELFCONTAINEDELECTRONICS Connect the left channel to the upper PH 1 input jack Connect the right channel to the lower PH 1 input jack PHONO 2 position is used if two record players are used in a system Connect the left channel to the upper PH 2 input jack Connect the right channel to the lower PH 2 input jack CONNECTING A STEREO TUNER Plug the cable ...

Page 14: ...sure the ground wire does not make any connections to the shields of the left and right channel cables TO BALANCE LOUDNESS 1 Set the MODE SELECTOR to MONO 2 Play a familiar recording 3 Turn the BALANCE control to the 12 o clock position 4 While the program is playing stand between the two loudspeakers Listen to see if there is a differ ence in loudness from either speaker If there is a difference ...

Page 15: ...STEREO or MONO depending on the program on the tape 3 Adjust the VOLUME control to the desired volume USING A TAPE RECORDER WITH THREE HEADS AND SEPARATE PLAYBACK PREAMPLIFIERS To listen to tape connect your tape recorder to the TAPE MONITOR input on the rear of the MA5100 1 Switch TAPE SWITCH to MONITOR 2 Switch the MODE SELECTOR to STEREO or MONO de pending on the program on the tape 3 Adjust th...

Page 16: ... rotation decreases bass loudness The large knob adjusts the bass in the right channel The small knob adjusts the bass in the left channel 14 TREBLE CONTROLS Use the LEFT and RIGHT TREBLE controls to regulate treble loudness to the left and right speakers respec tively Clockwise rotation increases treble loudness counter clockwise rotation increases treble loudness The large knob adjusts the trebl...

Page 17: ... FREQUENCY FILTER Use the L F filter switch to reduce objectionable low fre quency noise created by a turntable or record changer and acoustically coupled feedback FLAT filter disconnected FILTER low frequency rumble and noise below 50 Hz are reduced when the switch is pushed to the FILTER position H F HIGH FREQUENCY FILTER Use the H F filter switch to reduce objectionable high frequency noise suc...

Page 18: ...nt is modified or damaged as a result of unauthorized repair the SERVICE CONTRACT will be cancelled 4 The SERVICE CONTRACT is issued to you as the original purchaser To protect you from misrepresentation this contract cannot be trans ferred to a second owner 5 The SERVICE CONTRACT is given to the purchasers who live in the 50 United States or Canada only 6 For your protection Mclntosh selects its ...

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 038 329 BE032003 ...

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