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McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com

MC901

Dual Mono Amplifier

Owner’s Manual

Содержание MC901

Страница 1: ...McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 www mcintoshlabs com MC901 Dual Mono Amplifier Owner s Manual...

Страница 2: ...ompromising tube and solid state Amplifiers The MC901 combines the finest aspects of tube and solid state Amplifiers to drive even the most power hungry Loudspeakers to peak performance Safety First P...

Страница 3: ...15 Vacuum Tube Positions 13 Figure 16 Dual Meter 13 Figure 17 Front Knobs and LEDs 14 Figure 18 Roll Off for Low Pass Filter 16 Figure 19 Roll Off for High Pass Filter 17 Figure 20 1K Roll off Combin...

Страница 4: ...State side the MC901 utilizes our Autoformer which provides the optimal method of connecting a Solid State Amplifier to a Loudspeaker of virtually any impedance The McIntosh Autoformer provides full p...

Страница 5: ...VACUUM TUBES PRIOR TO CONNECTING THE A C POWER SUPPLY CORD To prevent damage to the Tubes during shipping there are special foam inserts surrounding the Tubes of the Power Amplifier The Foam Inserts m...

Страница 6: ...er Wire from a Loudspeaker to the Solid State Amplifier Positive and Negative terminals for 2 4 and 8 Ohm connections VACUUM TUBE INPUT SELECT Switch Used to select DIRECT or COMPOSITE input for the V...

Страница 7: ...The SOLID STATE INPUT SELECT is located below the SOLID STATE DIRECT INPUT Select either DIRECT or COMPOSITE With the COMPOSITE INPUT selection signal will flow through the Level Adjust and the Low P...

Страница 8: ...onnection Each Amplifier has a pair of 2 Ohm 4 Ohm and 8 Ohm Output terminals Keep in mind that the impedance rating of your Loudspeaker is an average over a range of frequencies It would be helpful i...

Страница 9: ...he Terminal Connection Cover over the Output Terminals Fasten with the two screws removed earlier WARNING Loudspeaker terminals are hazardous live and present a risk of electric shock Make sure the Te...

Страница 10: ...downside is that each transistor added raises the noise floor a small amount Quad Balancing eliminates this problem In the MC901 the 600 watt Solid State Amplifier contains two identical signal paths...

Страница 11: ...2 AMPS CIRCUIT BREAKER Figure 13 MC901 Connection Diagram Connection 1 Balanced cable Preamplifier to Composite Input 2 Balanced cable to 2nd MC901 3 Power Control from Preamplifier OUT to IN 4 Power...

Страница 12: ...nob is continuous so all settings between 100Hz and 1kHz are available The HIGH PASS FILTER will not amplify frequencies below the roll off point of the HIGH PASS FILTER It is possible to set each fil...

Страница 13: ...Dual Meter which displays the power output for both the Vacuum Tube and Solid State Amplifiers The Vacuum Tube scale is displayed on the top and the longer needle will point to the current output The...

Страница 14: ...fier or A V Control Figure 17 Front Knobs and LEDs Power Guard Screen Grid Sensor LED Power Guard LED Meter Control Knob Power Control Knob Center connected by a Power Control Cable See Power Control...

Страница 15: ...is very important that the four plastic feet are attached to the bottom of the equipment The feet come installed on the MC901 The feet ensure the proper equipment location on the bottom pad Failure t...

Страница 16: ...over settings The output will taper starting with the selected CROSSOVER POINT Figure 18 Roll Off for Low Pass Filter The lines from left to right represent the Crossover Points as noted on the SOLID...

Страница 17: ...r High Pass Filter Frequency Hz Decibels The lines from left to right represent the Crossover Points as noted on the VACUUM TUBE HIGH PASS FILTER Knob 100 A 130 B 180 C 250 D 300 E 400 F 550 G 800 H 1...

Страница 18: ...oll off Combined Graph Roll off for 1K Crossover Point This graph uses a 1k CROSSOVER POINT for both Filters This demonstrates the combined taper for both the HIGH PASS and LOW PASS Filters Other CROS...

Страница 19: ...to 20 000Hz 0 3 0dB from 10Hz to 70 000Hz Total Harmonic Distortion 0 5 maximum harmonic distortion at any power level from 250 milliwatts to rated power 20Hz to 20 000Hz Intermodulation Distortion 0...

Страница 20: ...s is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice Printed in the U S A McIntosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 www mcinto...