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MQ108

CUSTOM

ENVIRONMENTAL

EQUALIZER

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Summary of Contents for MQ108

Page 1: ...MQ108 CUSTOM ENVIRONMENTAL EQUALIZER...

Page 2: ......

Page 3: ...MQ108 CUSTOM ENVIRONMENTAL EQUALIZER...

Page 4: ...s 13 Nonuse Periods Unplug the power cord from the AC power outlet when left unused for a long period of time 14 Damage Requiring Service Service must be performed by qualified service personnel when...

Page 5: ...t it will become a highly valued part of your home music system SERVICE CONTRACT 4 INTRODUCTION 5 ROOM ACOUSTICS 5 6 EQUALIZING FOR OPTIMUM LISTENING 6 7 HOW TO CONNECT 7 MEASURING THE ROOM ACOUSTICS...

Page 6: ...of the service contract the ser vice contract certificate must accompany the instrument when taken to the service agency 3 Always have service done by a Mclntosh authorized service agency If the instr...

Page 7: ...ceiling covering The stiffness or flexibility of the room surfaces Reflections from furniture or substructures in the room All these factors can affect the sound balance Standing waves or room resonan...

Page 8: ...th the output from the Near microphones to add a desired degree of liveness and realism to the recording Concert hall acoustics will modify live sound and cause a gradual rolloff in high frequen cies...

Page 9: ...r similar analyzer will be satisfactory The analyzer microphone should be located in the listening area at normal ear height Measurements should be made for each stereo channel separately The results...

Page 10: ...l is turned clockwise the filter boosts When the control is turned counterclockwise the filter cuts Capacitors A and B program the frequency and bandwidth of the filter Capacitor values are determined...

Page 11: ...with the analyzer If you are using an analyzer with a continuous display the controls may be adjusted and results seen immediately If you are using an analyzer that indicates with a meter the controls...

Page 12: ...WEIGHTED 105dB below rated output 95dB IHF MAXIMUM INPUT SIGNAL High level 8V INPUT IMPEDANCE 22 000 ohms HIGH FREQUENCY COMPENSATION 10dB at 20 000Hz PROGRAMMABLE FILTERS 14 sections 7 per channel ea...

Page 13: ...TZ 10000 20000 Response in dB 20 10 1 0 2 0 20 FREQUENCY IN HERTZ 10000 20000 11 RESPONSE CURVES 1000 TYPICAL FILTER RESPONSE CHARACTERISTICS 200 Hertz Filters Shown TWO NARROW CASCADED NARROW WIDE HI...

Page 14: ...60 50 LEFT SPEAKER Suggested Equalization Curves 12 BAND FREQUENCY IN Hz 20 25 31 5 40 50 63 80 100 126 160 200 250 315 400 500 630 800 1k 1 25k 1 6k 2k 2 5k 3 15k 4k 5k 6 3k 8k 10k 12 5k 16k 20k 70...

Page 15: ...USE FOR CHARTING LOUDSPEAKER TESTS SPL IN dB 90 80 70 60 50 RIGHT SPEAKER SPL IN dB 80 70 60 50 13 GRAPHS 90 LEFT SPEAKER...

Page 16: ...USE FOR CHARTING LOUDSPEAKER TESTS L E F T SPEAKER 80 SPL IN dB 70 60 50 RIGHT SPEAKER SPL IN dB 80 70 60 50 14 GRAPHS 90 90...

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