McIntosh MAC 4100 Service Manual

Page 2

MAC4I00

PERFORMANCE LIMITS

POWER OUTPUT
|00 watts minimum sine wave continuous aver-
age power output, per Channel. both channels
operating into A ohms 20 Hz to 20 kHz, with
no more than .052 total harmonic distortion.
75 watts minimum sine wave continuous aver-
age power output, per channel. both channels
operating Into 8 ohms 20 Hz to 20 kHz. with
no more than .05% total harnmnic distortion.

OUTPUT LOAD IMPEDANCE
h ohms. 8 ohms

RATED POWER BAND
20 Hz to 20 kHz

TOTAL HARMONIC DISTORTION
From phone input to speaker output, .05%
maximum at any power level from 250 milli-
watts to rated power per channel, 20 Hz to
20 kHz. both channels operating.

INTERMODULATION DISTORTIDN
.OSZ maxlmum iF instantaneous peak power Is
twice rated continuous average power or less
per channel with both channels operating for
any combination of frequencies 20 Hz to
20 kHz.

FREQUENCY RESPONSE

20 Hz to 20 kHz + 0, - 0.5 dB at rated
power

HUM AND NOISE

Power Amp: IHFA 100 Get unweighted. 95 dB
below rated output

TAPE AND AUX INPUT: IHFA 95 dB. unweighted,

Tape and Aux Input: IHFA 95 dB, unweighted,
90 dB below rated output

Phone input: IHFA 90. unweighted, 80 dB below
10 mV input

DAMPING FACTOR
Greater than 30
INPUT SENSITIVITY AND IMPEDANCE
Power Amp: 2.5V; 22,000 ohms
Tape and Aux: ZSOmV; 100.000 ohms
Phono; va; h7,000 ohms; 87 pF
TAPE OUTPUT
Tuner: I.0v at IOOZ modulation (FM)
Tape; 250 mV with rated input
Phone: ZSDmV with rated Input
PROGRAM EQUALIZER

: I2 dB at 30, ISO, 500. I500, and |0,000 HZ

AH SECTION

SENSITIVITY

75 uv IHF (External antenna)
SIGNAL T0 NOISE RATIO

MS dB minimum IHF. 55 dB at I003 modulation
HARMONIC DISTORTION

l% maximum at 307 modulation
FREQUENCY RESPONSE

3500 HZ @ -6 dB
ADJACENT CHANNEL SELECTIVITY

30 dB minimum IHF
IMAGE REJECTION

65 dB minimum, 5A0 kHz to I600 kHz

FM SECTION

SENSITIVITY

2.5 PV (I3 68F) IHF minimum
SIGNAL T0 NOISE RATIO

70 dB IHF minimum
HARMONIC DISTORTION

Mono: 0.l8% IHF maximum
Stereo: 0.38% IHF maximum

FREQUENCY RESPONSE

20 Hz to IE kHz + 0, -| dB
CAPTURE RATIO

I.B dB
SELECTIVITY

75 dB IHF minimum
SFURIOUS REJECTIUN

90 dB IHF minimum
IMAGE REJECTIDN

80 dB IHF mlnlmum
STEREO SEPARATION

A5 dB minimum at I kHz
SCA REJECTION

60 dB minimum