System has been Balanced Adjusting for Special Effects Using the C11 with a Stereo Tuner Using the C11 with a Stereo Tape Machine_ Using the C11 with Tape Deck Using the C11 with Microphones for Stereo. Listening to Monophonic Records...
All of these jobs are performed with ex- required. cellence by the C11 and yet this instrument Second, every sound system is used in a is simple to operate, easy to mount, and is different acoustical environment.
A-C Auxiliary Outlets High-level inputs: 85 db below rated output 1 unswitched for tape machine or turntable, Low-level inputs: less than 2 microvolts at colored Red 4 switched, colored Black input terminals FRONT PANEL FACILITIES Figure 1. C11 Front Panel...
Page 5
C11 through this position. BASS CONTROLS 4. TUNER 2: same as TUNER 1. BASS CONTROLS 5. PHONO 1: connects the C11 for stereo and monophonic operation for records. LEFT RIGHT 6. PHONO 2: same as PHONO 1.
Page 6
LEFT . . . turning the control to the left ac- cents the left channel by reducing the right channel output. The C11 and the four black receptacles on RIGHT . . . turning the control to the right ac- the back panel are turned on by this switch.
With this arrangement it is cycles. Longer cables than are normally sup- necessary to turn off the turntable with its plied can be connected between the C11 own control switch so that the turntable drive and the amplifiers or loudspeakers. The system will not be damaged.
Two pairs of screw terminals are located stereo tuners. on the lower left section of the C11 back panel. The speaker leads from the " l e f t " LOW LEVEL INPUTS...
Page 9
(½ inch by 3½ inches) as a measuring tool. of the roundhead screws of the proper length Proceed as follows: are used to attach the C11 to the cabinet and Scribe a vertical center line through the mounting strips. The 6-32 x ½ inch screws exact center of the proposed cutout area are to be used with panels ½...
The Mcintosh L66 cabinet is supplied inches high, including mounting feet, with complete instructions and all necessary by 13¾ inches deep, including the front hardware for installing the C11. The dimen- panel and control knobs. CONNECTING A-C CONNECTIONS or record changer. The receptacle is not...
INPUT SELECTOR The input program connection should be switch and one input for tape comparison or made in accordance with Tables 1 and 2. Figure 7. C11 Input Connections (Back Panel) INPUT INPUT SENSITIVITY IMPEDANCE...
Figure 8. Turntables Feeding Low Level Input OUTPUT CONNECTIONS 40 feet long; 13.5 mmf per foot cable may be 75 feet long. Two sets of outputs, located in the upper The tape output is affected only by the left-hand corner of the back panel, are pro- vided.
Two pairs of screw terminals are located avoid hum, make sure the ground wire does on the lower left section of the C11 back not make any connections to shields of the panel. The speaker leads from the " l e f t "...
LISTENING TO A STEREO RECORD Upon completion of the connecting and H.F. Cutoff Filter. If you wish to reproduce balancing instructions, the C11 is ready for old, badly worn records, you can minimize use. To listen to stereo records, proceed as the surface noise by switching the H.F.
LOUD- Microphones in stereo may be used with NESS switch to the COMPENSATED position. the C11. The two MIC channels amplify mi- crophone signals. They have a sensitivity of USING THE C11 WITH A STEREO TUNER 2 millivolts and an input impedance of 1 1.
Page 16
EQUALIZATION CURVES - 1 0 - 1 5 - 2 0 - 2 5 IOKC 20 KC FREQUENCY F i g u r e 1 0 . E q u a l i z a t i o n c u r v e s . BASS AND TREBLE CONTROLS - 2 0 20 KC...
Page 17
RUMBLE AND HIGH FREQUENCY FILTERS - 2 0 - 2 5 - 3 0 1 KC 10 KC 2 0 KC FREQUENCY F i g u r e 1 2 . R u m b l e f i l t e r a n d h i g h f r e q u e n c y f i l t e r .
Your C11 will give you many years of pleasant and satisfactory performance. If you have any questions concerning the oper- ation or maintenance of this preamplifier please contact: Customer Service Mcintosh Laboratory Inc. 2 Chambers Street Binghamton, New York Our telephone number is 723-5491.
Page 20
LABORATORY INC. 2 CHAMBERS STREET, BINGHAMTON, N. Y. Made in U.S.A. Phone-Area Code 607-723-5491 Printed in U.S.A.
Need help?
Do you have a question about the C11 and is the answer not in the manual?
Questions and answers