Electro-Voice Michigan MC12 User's Manual
Contents
1. 8 1 4 DIA FIGURE 1 Dimensions WARRANTY Electro Voice high fidelity speakers speaker systems and accessories are guaranteed for five years from date of original purchase against malfunction due to defects in workmanship and materials If such malfunction occurs unit will be repaired or replaced at our option without charge for materials or labor if delivered prepaid to the proper Electro Voice service facility Unit will be re turned prepaid Warranty does not cover finish or appear ance items or malfunction due to abuse or operation at other than specified conditions Repair by other than Electro Voice or its authorized service agencies will void this guarantee For correct shipping address instructions on return of Electro Voice products for repair and locations of authorized service agencies please write Service Depart ment Electro Voice Inc 600 Cecil Street Buchanan Michigan 49107 Phone 616 695 6831 Electro Voice also maintains complete facilities for non warranty service of E V products FIGURE 2 Connection of two 8 ohm speakers in parallel FIGURE 3 Connection of two 16 OHMS 8 ohm speakers in series 8 OHMS FIGURE 4 Connection of four 8 ohm speakers in series parallel Part No 531463 410 a Gulton comeany ELECTRO VOICE Inc 600 CECIL ST BUCHANAN MICH 49107 MANUFACTURING PLANTS AT BUCHANAN MICH E NEWPORT TENN E SEVIERVILLE TENN M GANANO2. DESCRIPTION Michigan MC8 MC12 and MT12 loudspeakers are designed to operate effectively as full range high fidelity speakers Full range reproduction is enhanced by the exclusive Radax design The di mensions mass and location of the coaxially mounted Radax cone have been carefully chosen for maximum improvement of the speaker s high frequency performance Carefully selected and specially treated cone material assures extended bass response affording pleasing reproduction of all low frequencies normally encountered in music The MT12 incorporates a ring diaphragm tweeter with an annular horn for improved high frequency response and dispersion INSTALLATION As with any quality loudspeaker care should be taken to house Michigan speakers properly if best results are to be obtained Excellent results may be achieved by the use of a properly designed bass reflex enclosure Detailed information on home construction of bass reflex enclosures is available from Electro Voice in Technical Bulletin No 10 Any of the bassreflex enclosures described in numerous articles maybe employed provided they are intended for a speaker of the same size and resonant frequency as the Michigan speaker to be used To mounta Michigan speaker cut a baffle opening and drill mounting holes as indicated Use four carriage bolts nuts and washers or equivalent use of woodscrews is not recommended Secure the speaker to the baffle board just tightly enough
3. 32 holes on 4 1 4 holeson 4 9 32 holes on 7 5 8 circle 11 1 2 circle 1i 1 2 circle ADJUSTMENT OF BALANCE CONTROL The Model MT12 is provided with a continuously variable level control which is used to adjust the very high frequency response brilliance of the speaker to varying personal tastes and acoustic environments Setting the high frequency control too high will produce a metallic sound Your MC8 MCi12 MTi2 MICHIGAN LOUDSPEAKERS SUaMVadSGNO7 NVDIHOIW ZLLIA ZIOW BOI 1A Ki NIA best guide to setting the control properly is of course a familiarity with the sound of live music Acoustically hard or live rooms will normally require a retarded setting of the brilliance control to compensate for the greater amount of high fre quency reflection In soft or dead rooms with carpeting draperies and soft furniture a more advanced setting of the high frequency control will normally be required CUSTOMER SERVICE Michigan speakers are packed to provide protection well in excess of shipping requirements of the Interstate Commerce Commission If shipping damage does occur however contact the carrier or the dealer from whom the unit was purchased requesting inspection and instructions MT12 N 9 32 DIA THRU 4 HOLES EQUALLY SPACED ON 1 1 2 8 2 12 1 4 DIA 9 32 DIA THRU 4 HOLES EQUALLY SPACED ON I1 1 28 C hee DES 7 32 DIA THRU 4 HOLES EQUALLY SPACED ON 7 5 8 8 C
4. to compress the speaker gasket Excessive tight ening is not necessary as the compressible gasket will form anacoustical seal with nominal pressure ENGINEERING DATA CONNECTIONS Use 18 or larger fixture wire to connect the two terminals on the loudspeaker to the amplifier out put To insure proper phasing the speaker T1 terminal should be connected to the 8 ohm ampli fier tap the T2 terminal should be connected to the amplifier common tap The 8 ohm impedance of Michigan speakers is a standard EIA rating A mismatch ofas muchas fifty percent may be made without greatly affecting the reproduction quality or efficiency of the unit When the speaker cable must be run under carpets or behind moldings etc ordinary TV twin lead is satisfactory SPECIFICATIONS MCS MCi2 MT12 Frequency Response 50 13 000 cps 40 14 000 cps 40 13 000 cps Nominal Impedance 5 ohms 8 ohms 8 ohms Power Handling Capacity Program 12 watts 20 watts 20 watts Peak 24 watts 40 watts 40 watts Voice Coil Diameter 1 inch 2 inches 2 inches 1 inch tweeter Magnet Weight 6 4 oz 6 8 oz 6 8 oz Indox Ceramic Alnico V 1 47 oz tweeter Alnico V Nominal Resonance 75 cps 60 cps 60 cps EIA Sensitivity Rating 46 db 46 db 46 db Dimensions 8 1 4 dia x 12 1 4 dia x 12 1 8 dia x 3 3 16 depth 3 1 2 depth 5 1 2 depth behind panel behind panel behind panel Net Weight 4 pounds 5 1 2 pounds 7 pounds Baffle Opening 7 inches 11 inches 11 inches Mounting 4 7
5. QUE ONT E LITHO IN U S A
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