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SPECIFICATIONS

ELECTRICAL SPECIFICATIONS

POWER OUTPUT:

45 RMS watts continuous per channel into 4 ohms

both channels operating.

45 RMS watts continuous per channel into 8 ohms

both channels operating.
30 RMS watts continuous per channel into 16 ohms

both channels operating.

HARMONIC DISTORTION:

Less than 0.25% at rated power output from 20 Hz to
20 kHz, both channels operating. Typical perform-
ance is less than 0.1% at rated power. Distortion de-

creases as output power is reduced.

INTERMODULATION DISTORTION:

Less than 0.25% if instantaneous peak power output

is twice rated power or less per channel with both

channels operating for any combination of frequen-

cies 20 Hz to 20 kHz.

FREQUENCY RESPONSE:

10 Hz to 25 kHz + 0, -0.5 dB at rated power.

8 Hz to 50 kHz + 0, -3.0 dB at rated power.

TOTAL NOISE (INCLUDING POWER AMPLIFER):

High Level Inputs: 75 dB below rated output
Low Level Inputs: 70 dB below 10 mV input; equiva-

lent to less than 3 microvolts at input.

OUTPUT IMPEDANCE:

4. 8, or 16 ohms.

DAMPING FACTOR:

50 with 4 ohms load

100 with 8 ohms load

200 with 16 ohms load

INPUT IMPEDANCE:

AUXILIARY, TAPE. TUNER, and TAPE MONITOR:
250,000 ohms

PHONO 1 and PHONO 2: 47,000 ohms

TAPE HEAD: 500,000 ohms

INPUT SENSITIVITY:

AUXILIARY. TAPE, TUNER, and TAPE MONITOR:

300

 mV

PHONO 1 and PHONO 2: 2 mV

TAPE HEAD: 2 mV

TAPE OUTPUT:

300 mV with rated input, 1.4 volts with 10 mV at phono

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  f r i c t i o n 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 REQUIREMENTS:

117 volts. AC. 50-60 Hz. 70 watts at zero signal out-

put, 200 watts at rated output.

SPECIAL FEATURES

COMP (COMPENSATOR) SWITCH:

RIAA or LP phono equalization.

TAPE MONITOR SWITCH:

NORMAL or Tape MONITOR indicator lamp lights in
MONITOR position.

PHASE SWITCH:

Electronic phase inverter. Normal (0°) or reverse

(180°).

SPEAKER SWITCH:

Speakers ON or OFF for headphone listening, indi-
cator lamp lights in SPEAKER OFF position.

LOUDNESS SWITCH:

NORMAL or COMPENSATED.

HEADPHONE JACKS:

Two. for two pairs of low impedance headphones.

INPUT SELECTOR:

6 positions: AUX. TAPE. TUNER, PHONO 1, PHONO
2, TAPE HD.

MODE SELECTOR:

7 positions: L to L and R, R to L and R. STEREO RE-

VERSE, STEREO, MONO (L + R), L + R to L, L+R to R.

SEMICONDUCTOR COMPLEMENT:

23 Silicon Rectifiers and Diodes

34 Silicon Transistors

2 Silicon Bilateral Switches
2 TRIAC

MECHANICAL SPECIFICATIONS

SIZE:

Front panel. 16 inches wide by 5

7

/

16

 inches high;

chassis. 15 inches wide by 4½ inches high by 14½
inches deep, including connectors. Clearance in front

of mounting panel including knobs, 1½ inches.

WEIGHT:

25 pounds net, 41 pounds in shipping carton.

FINISH:

Front Panel: Anodized gold and black.

Chassis: Chrome and black.

7

Содержание MA 5100

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

Страница 2: ......

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 7: ...BLOCK DIAGRAM 5 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 19: ......

Страница 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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