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The Front Panel Controls and 

How to Use Them 

BALANCE and 
LOUDness 

The BALANCE and 

LOUDness controls are 

concentric. The BAL-
ANCE control (large 

outer knob) adjusts for 

equal volume of either 
the left or right chan-

nels. The volume of the channels can be varied 
relative to each. 

left . . . turning the control to the left accents the 

left channel by reducing the right channel output. 

right . . . turning the control to the right accents 

the right channel by reducing the left channel out-

put. 

LOUDness 

Use the LOUDness control for full frequency 

range listening at even the softest listening levels. 

The LOUDness control (the small center knob of the 
concentric control) provides low-frequency boost to 

compensate for a hearing characteristic of the 

human ear at low listening levels. The ear becomes 

less sensitive to low frequencies as volume is reduc-

ed. Increased loudness compensation is therefore 

desirable at lower listening levels. The loudness 
control boosts the low frequencies so that the ear 

hears approximately the same musical balance as it 

would at higher listening levels. 

FLAT: (Maximum counterclockwise rotation) Full 

volume with flat frequency response. The loudness 

compensation is inoperative in this position. 

Turning the control clockwise toward MAX 

reduces the listening volume, and automatically in-

creases the compensation by boosting bass. 

INPUT SELECTOR 

The six position INPUT SELECTOR controls the in-

put program. When the INPUT SELECTOR is turned 

to: 

AUX 1: the output from any high level program 

source requiring flat amplification is connected to 
the high level input stage. Such a source could be 
another tape recorder, or a television set. 

AUX 2: same as AUX 1 

TUNER: the output from any AM, FM or MPX FM 

tuner is connected to the high level input stage. In 
the TUNER position the C 29 has flat amplification. 

Содержание C29 -

Страница 1: ...Price 2 00 Reading Time 38 Minutes THE C 29 SOLID STATE STEREO PREAMPLIFIER...

Страница 2: ...n the rear panel of the chassis Record that serial number here The model serial number and purchase date are im portant to you for any future service Record the pur chase date here Upon application Mc...

Страница 3: ...r damaged as a result of unauthorized repair the SER VICE CONTRACT will be cancelled Damage by improper use or mishandl ing is not covered by the SERVICE CON TRACT 4 The SERVICE CONTRACT is issued to...

Страница 4: ...ove the C 29 from its plastic bag and place it upside down on the shipping pallet unscrew the four plastic feet from the bottom of the chassis 2 Mark the cabinet panel Place the mounting template in t...

Страница 5: ...to the cabinet 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 pr...

Страница 6: ...the INPUT PHono 1 left jack Connect the cable from the right channel of the turntable into the IN PUT PHono 1 Right jack For a second turntable connect PHono 2 in the same way after removing the short...

Страница 7: ...NS FOR TUNERS TURNTABLES AND TAPE RECORDERS 5 TUNER FM ANTENNA AC POWER TO TUNERS TAPE RECORDERS AND POWER AMPLIFIERS AC POWER TO TURNTABLES TAPE RECORDER 1 TAPE RECORDER 2 MICROPHONES TURNTABLE 2 TUR...

Страница 8: ...NG AC POWER The preamplifier AC power cord is plugged into a 120 volt 60 Hz wall outlet There are two types of AC power outlets on the back panel four black and two green The green AC power outlets ar...

Страница 9: ...ONAL SCR 2 FOR PUSHBUTTON SWITCHING OF MAIN AND REMOTE SPEAKERS SECONDARY SYSTEM SPEAKERS CONNECTIONS FOR POWER AMPLIFIERS AND LOUDSPEAKERS 7 POWER AMPLIFIER MAIN SPEAKERS REMOTE SPEAKERS POWER AMPLIF...

Страница 10: ...frequencies as volume is reduc ed Increased loudness compensation is therefore desirable at lower listening levels The loudness control boosts the low frequencies so that the ear hears approximately t...

Страница 11: ...he left plus right program to the right loudspeaker only VOLUME CONTROL The VOLUME control is a precision step con trol manufactured for Mcintosh Laboratory It has 32 steps with a 70 dB range plus vol...

Страница 12: ...order 1 can be made on tape recorder 2 To monitor the original use MONITOR TAPE 1 pushbutton and to monitor the copy use MONITOR TAPE 2 pushbutton TAPE COPY T2 T1 pushbutton in connects the output fro...

Страница 13: ...jack only and do not affect the program loudness from the loudspeakers To ad just for comfortable headphone listening first adjust the VOLUME control to normal room loudness Then while wearing the hea...

Страница 14: ...to operate into 10 000 ohms or greater HEADPHONE LINE 0 75 volts into 8 ohm load or 2 5 volts into 600 ohm line 47 ohm source impedance level controls provided VOLTAGE AMPLIFICATION IN DECIBELS Auxili...

Страница 15: ...itches Either of two tape recorders can be connected to copy from tape recorder 1 to tape recorder 2 or vice versa They are mechanically interlocked to accept only one pushbutton at the IN position at...

Страница 16: ...d up to 18 dB of boost or cut at 20 000 Hz FILTER AMPLIFIER The filter amplfier serves three functions a high frequency filter a low frequency filter and a 20 000 Hz low pass filter Each channel of th...

Страница 17: ...BASS AND TREBLE CONTROL CHARACTERISTICS FREQUENCY IN HERTZ PHONO EQUALIZATION RIAA AND MICROPHONE RESPONSE LOW AND HIGH FREQUENCY FILTER CHARACTERISTICS FREQUENCY IN HERTZ LOUDNESS CONTROL CHARACTERIS...

Страница 18: ...the C 29 power transformer is triple shielded Shielding includes a copper strap a silicon steel strap and a steel outer shell The transformer output voltage is fed to a full wave bridge rectifier with...

Страница 19: ......

Страница 20: ...C 2 CHAMBERS ST BINGHAMTON N Y 13903 039116 607 723 3512 The continuous improvement of its products is the policy of Mcintosh Laboratory Incorporated who reserve the right to improve design without no...

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