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Electro-Voice Force 15 User's Manual

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1. SPECIFICATIONS Nominal Diameter FORCE 10 254 mm 10 in FORCE 12 305 mm 12 in FORCE 15 381 mm 15 in Nominal Impedance FORCE 10 8 ohms FORCE 12 8 ohms FORCE 15 8 ohms Long Term Average Power Handling Capacity per EIA Standard RS 426A FORCE 10 150 watts FORCE 12 150 waits FORCE 15 150 watts Sound Pressure Level at 1 Meter 1 Watt into Nominal Impedance using spectrum specified in EIA Standard SE103 Section SE3 FORCE 10 98 dB FORCE 12 99 dB FORCE 15 100 dB Usable Frequency Response FORCE 10 75 7000 Hz FORCE 12 60 7000 Hz FORCE 15 45 6000 Hz Voice Coil Diameter FORCE 10 63 5 mm 2 5 in FORCE 12 63 5 mm 2 5 in FORCE 15 63 5 mm 2 5 in Magnetic Assembly Weight FORCE 10 4 54 kg 10 Ib FORCE 12 4 54 kg 10 Ib FORCE 15 4 54 kg 10 Ib Baffle Opening Diameter front or rear mounting FORCE 10 229 mm 9 in FORCE 12 279 mm 11 in FORCE 15 353 mm 13 88 in Overall Diameter FORCE 10 259 mm 10 2 in FORCE 12 310 mm 12 2 in FORCE 15 384 mm 15 1 in Overall Depth FORCE 10 122 mm 4 8 in FORCE 12 130 mm 5 1 in FORCE 15 163 mm 6 4 in Net Weight FORCE 10 5 44 kg 12 0 Ib FORCE 12 5 8 kg 12 8 Ib FORCE 15 5 8 kg 12 8 Ib Frame Composition FORCE 10 diecast aluminum FORCE 12 diecast aluminum FORCE 15 diecast aluminum THIELE SMALL PARAMETERS fs Free Air Resonance Frequency FORCE 10 65 Hz FORCE 12 55 Hz FORCE 15 40 Hz Qis Total Q at f FORCE
2. 10 38 FORCE 12 44 FORCE 15 51 Vas Volume of Air Having Same Acoustic Compliance as Driver Suspension FORCE 10 0425 m 1 5 ft3 FORCE 12 0878 m 3 1 ft3 FORCE 15 2974 m 10 5 ft3 no Half Space Reference Efficiency FORCE 10 2 6 FORCE 12 2 9 FORCE 15 3 3 Vg Peak Displacement Volume of Diaphragm FORCE 10 104 4 cm 6 4 in 3 FORCE 12 166 2 cm 10 1 in 3 FORCE 15 282 2 cm 17 2 in 3 Sg Effective Diaphragm Area FORCE 10 316 1 cm 49 in 2 FORCE 12 503 3 cm 78 in 2 FORCE 15 855 3 cm 132 6 in 2 Xmax Peak Linear Displacement of Diaphragm FORCE 10 3 3 mm 13 in FORCE 12 3 3 mm 13 in FORCE 15 3 3 mm 13 in Electro Voice a MARK IV company FORCE 10 42 15 Musical instrument Loudspeakers R D Resistance of Voice Coil FORCE 10 5 2 ohms 10 FORCE 12 5 2 ohms 10 FORCE 15 5 2 ohms 10 DESCRIPTION The FORCE 10 12 and 15 inch loudspeakers are designed for professional high level high quality musical instrument and sound reinforcement systems Power capabilities are 150 watts per EIA Standard RS 426A The construction of FORCE loudspeakers features a low mass voice coil on a rugged aminated Polyimide coil form driven by a 10 1b magnetic structure Also featured are a heavy duty curvilinear cone and a fatigue resistant cone suspension Both the coil and magnetic structure are vented All of this is packaged in a husky eight spoke diecast aluminum frame
3. with a heat radiating finned back cover FORCE speakers may be front or rear mounted without an adapter The optional gt MH 1 speaker mounting kit including T nuts and complete instructions facilitates front mounting POWER HANDLING TEST The FORCE 10 12 and 15 are designed to withstand the power test descrived in EIA Standard RS 426A The EIA test spectrum is applied for eight hours To obtain the spec trum the output of a white noise generator white noise is a particular type of random noise with equal energy per bandwidth in Hz is fed to a shaping filter with 6 dB per octave slopes below 40 Hz and above 318 Hz When measured with the usual constant percentage bandwidth analyzer one third octave this shaping filter produces a spec trum whose 3 dB down points are at 100 Hz and 1200 Hz with a 3 dB per octave slope above 1200 Hz This shaped signal is sent to the power amplifier with the continuous power set at 150 watts into the 5 6 ohms EIA equivalent impedance 29 volts true RMS Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power or 600 watts peak 58 volts peak This procedure provides a rigorous test of both thermal and mechanical failure modes RECOMMENDED ENCLOSURES Replacement use in existing enclosures FORCE loudspeakers will often be used to replace inferior speakers in existing enclosures Mechanical and electrical characteristics are such that the superior efficiency so
4. EL Specifications Specifications Specifications Frequency Response 75 7 000 Hz Frequency Response 60 7 000 Hz Frequency Response 45 6 000 Hz Sound Pressure Level 118 dB Sound Pressure Level 119dB Sound Pressure Level 120 dB at 4 150 watts in men at 4 150 watts in at 4 150 watts in Long Term Power Long Term Power Long Term Power Handling Capacity 150 watts per EIA Handling Capacity 150 watts per EIA Handling Capacity 150 watts per EIA Standard RS 426A Standard RS 426A Standard RS 426A Nominal impedance 8 ohms Nominal Impedance 8 ohms Nominal Impedance 8 ohms Voice Coil Diameter 63 5 mm 2 5 in Magnet Assembly Voice Coil Diameter 63 5 mm 2 5 in Magnet Assembly Weight 4 54 kg 10 Ibs Magnet Assembly Weight 4 54 kg 10 Ibs Frame Diecast aluminum Weight 4 54 kg 10 Ibs Frame Diecast aluminum Dimensions Frame Diecast aluminum Dimensions Overall Diameter 310 mm 12 2 in Dimensions Overall Diameter 259 mm 10 2 in Overall Depth 130 mm 5 1 in Overall Diameter 384 mm 15 1 in Overall Depth 122 mm 4 8 in Weight 5 8 kg 12 8 Ibs Overall Depth 163 mm 6 4 in Weight 5 44 kg 12 Ibs Weight 5 8 kg 12 8 lbs u Poly vi a gultan company 600 Cecil Street Buchanan Michigan 49107 Form 2386 O Guiton Industries Inc 1984 Litho in USA
5. driver should be sufficient Do not use adhesive back gasket segments for rear mounting lf a cabinet is to be constructed from scratch s inch solid and jointed or marine plywood is recommended After construction be certain interior is completely free of metal fillings wood chips etc CONNECTIONS Use No 18 or larger stranded wire to con nect the two terminals on the loudspeaker to the arnplifier output If a choice of amplifier Output impedance is available 4 8 16 ohms a single FORCE speaker should be con nected to the 8 ohm tap Two FORCE speakers may be connected in parallel as shown in Figure 1 Be sure to connect the red terminals together If series wiring is desired wiring and polarity should follow Figure 2 a MARK IV company 4 OHMS FIGURE 1 Connection of 2 FORCE Speakers in Parallel 16 OHMS FIGURE 2 Connection of 2 FORCE Speakers in Series WARRANTY Limited Electro Voice Speakers and Speaker Systems excluding active electronics are guaranteed for five years from date of original purchase against malfunction due to defects in workmanship and materials If such malfunc tion 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 returned prepaid Warranty does not extend to finish appearance items burned coils or malfunction due to abuse or operation under oth
6. e recommended for simple secure mounting If T nuts are used the holes should be 28 diameter letter L drill Apply glue to the flanges of 14 20 long shank T nuts before driving into the rear of the holes Sealing of the front mounted speaker is accomplished with the adhesive backed foam gasket segments Strip off protective paper and apply gasket to the rear mounting surface of the speaker rim making certain that holes in the gasket line up with the mounting holes in the speaker frame Length of the 20 screws should be Y2 plus the panel thickness when using T nuts The screws must have fillister heads to seat down in the recess of the speaker frame Screws should be tightened evenly and securely Maximum torque possible with a proper size screwdriver should be sufficient IMPORTANT When front mounting the screw head must fit down into the front gasket cutout Rear mounting requires the same diameter cutout and screw circle as front mounting Other comments regarding the use of T nuts apply to rear mounting as well Screw length should be 3 plus panel thickness if using T nuts longer for standard hex nuts If hex nuts are used a second nut should be tightened against the first nut to prevent loosening during operation A lock washer and flat washer are recommended between the screw head and frame Screws should be tightened evenly but not excessively Maximum torque possible with a proper size screw
7. er than specified conditions inclucing cone and or coil damage resulting from improperly designed enclosures nor does it extend to incidental or consequential damages Some states do not allow the exclusion or limitation of incidental or consequential damages so the above exclusion may not apply to you Repair by other than Electro Voice or its authorized service agencies will void this quarantee A list of authorized warranty service agencies is available from Electro Voice Inc 600 Cecil Street Buchanan MI 49107 AC 616 695 6831 or Electro Voice West 8234 Doe Avenue Visalia CA 93291 AC 209 651 7777 This warranty gives you specific legal rights and you may also have other rights which vary from state to state Service and repair address for this product Electro Voice Inc 600 Cecil Street Buchanan Michigan 49107 Specifications subject to change without notice ELECTRO VOICE INC 600 Cecil Street Buchanan Michigan 49107 MANUFACTURING PLANTS AT E BUCHANAN Mi W NEWPORT IN ME SEVIERVILLE TN BE OKLAHOMA CITY Ox B GANANOQUE ONT Electro Voie Inc 1990 BM Litho In USA Part Number 3936 104 gt JBL M112 2 0 in flat wire 100 dB non edge wound 94 dB FORCE 12 2 5 in round wire 12 8 CAST 101 dB edge wound 95 dB EVM 12L 2 5 in flat wire CAST 100 dB 96 dB CELESTION 1 75 in round STAMPED 103 dB G12 80 97 dB 100 400 Hz piston range sensitivity MODEL MODEL MOD
8. und quality and reliability of FORCE loudspeakers will be realized in virtually any sealed vented bass reflex horn or open backed enclosure VENTED ENCLOSURES The most extended lowest distortion and best controlled bass performance is usually realized in properly designed vented enciosures In such designs the vent or port actually reproduces the lowest octave or so of bass response The vent is driven to full acoustic Output by a relatively smail motion of the speaker cone itself acting through the air contained within the enclosure The excursion of the speaker at these frequencies is much reduced compared to sealed or open backed enciosures directly reducing harmonic distortion and the possibility of speaker bottoming INSTALLATION FORCE speakers may be front or rear mounted although front mounting is pre ferred because of convenience For simple front mounting the convenient SMH 1 mounting accessory is recommended Complete mounting instructions are included with the SMH 1 Instructions for standard front mounting are given below It s important that recommended baffle openings and mounting hole locat ons be followed as Stated in the specifications table For front mounting mark baffle opening and screw locations on the blank panel first Drill the screw holes before cutting the large baffle opening If 4 20 screws are used four screws are sufficient for secure mounting of the speaker T nuts ar

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