Electro-Voice SRO/15L User's Manual
Contents
1. plus the panel thickness when using TEENUTS 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 See Figure 2 REAR MOUNTING requires the same diameter cutout and bolt circle as front mounting However the bevel is not required Other comments regarding the use of TEENUTS apply to rear mounting as well Screw length should be plus panel thickness if using TEENUTS 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 See Figure 3 Screws should be tightened evenly but not excessively Maximum torque possible with a proper size screwdriver should be sufficient Do not use adhesive back gasket segments for rear mounting If a cabinet is to be constructed from scratch 4 inch solid and jointed or marine plywood is recommended After construction be certain interior is completely free of metal filings wood chips etc 71 om 0 32 DIA THRU 8 HOLES EQUALLY SPACED ON 149 18 E C 137 cm FIGURE 2 Front Mounting Detail Not to scale FRONT GASKET CUT OUT REAR SPEAKER MOUNTING SURFACE2. ENGINEERING SlechoVorce DATA DESCRIPTION Speakers used with amplified instruments are subjected to the severest possible operational and handling conditions Even so failure of a speaker in live performance is in tolerable The SRO 1SL musical instrument speaker combines reliability with high efficiency The powerful sixteen pound magnetic structure combined with the edgewound aluminum voice coil results in efficiency unmatched in other so called high power speakers In fact the SRO 15L produces more acoustic power at 100 watts input than most high power speakers at 200 watts input What about reliability Look at all the goodies super rigid eight spoke diecast aluminum frame nonfatiguing cloth cone suspension heavy duty improved design curvilinear cone to eliminate breakup and edge hole effects high heat resistant laminated coil form new heat dissipating back cover and many more techniques to provide performance you can count on There s more The SRO ISL represents flexibility unmatched anywhere Installed in a correct horn or vented enclosure it not only provides the deep gut sound required for bass but a smooth treble that produces startling performance for either lead guitar or P A That s having your cake and eating it too Power Well we rate the brute at 100 watts continuous sine wave but what does all this power do for the per former In a proper vented enclosure the 100 watts is SRO 15
3. FLAT WASHER LOCK WASHER FIGURE 3 Rear Mounting Detail Not to scale CONNECTIONS Use No 18 or larger stranded wire to connect the two terminals on the loudspeaker to the amplifier output If a choice of amplifier output impedance is available 4 8 16 ohms a single SRO 15L speaker should be connected to the 8 ohm tap Two SRO 15L speakers may be connected in parallel as shown in Figure 4 Be sure to connect the red terminals together If series wiring is desired wiring and polarity should follow Figure 5 The correct impedance tap for this configuration is 16 ohms as 5 J Hfr WARRANTY lectro Voice Amplified Instrument Cone Speakets are guasanteed for the life of the speaker against ptcion due t als If such facility Unit will be cover finish or a items or malfunction due to Speakers for warranty repair must be shipped prepaid to Electro Voice or its authorized service agency and will be returned prepaid For locations of E V service agencies please write Service Department Electro Voice Inc 600 Cecil Street Buchanan Michigan 49107 Electro Voice also maintains complete facilities for non warranty service CUSTOMER SERVICE SRO 15L speakers are packed to provide maximum pro tection well in excess of the shipping requirements of the Interstate Commerce Commission If shipping damage does occur contact the carrier immediately requesting inspection and instructions or contact the deale
4. L 15 INCH MUSICAL INSTRUMENT LOUDSPEAKER FEATURES Husky 8 spoke diecast aluminum frame Low mass high efficiency edgewound voice coil Rugged laminated coil form Heavy duty curvilinear cone Fatigue resistant cone suspension Vented coil and magnet structure Heat radiating back cover capable of flexing your eardrums with 120 dB of sound at four feet Use a properly designed horn load and its capability goes up at least 3 dB overall and up to 10 dB at bass frequencies The same as doubling your amplifier power Incidentally we don t recommend that you stand in such a sound field permanent ear damage may result What s the result of all this The SRO 15L will turn you on SPECIFICATIONS Nominal Impedance 8 ohms DC Resistance 5 ohms 10 Power Handling Capacity 100 watts continuous sine wave 2 6 35cem 4 lbs 13 02 2 2kg ceramic 16 lbs 7 2kg 55 dB 15 1 8 38 13cm dia x 7 17 78cm deep Eight 9 32 71cm holes equally spaced on 14 9 16 37cm circle Voice Coil Diameter Magnet Weight Magnetic Structure EIA Sensitivity Rating Dimensions Frame Mounting Mounting Dimensions Baffle Opening Mounting Holes 13 7 8 35 25cm dia Four or eight 9 32 71cm holes equally spaced on 14 9 16 37cm bolt circle 21 pounds 9 5kg 25 pounds 11 3kg Net Weight Shipping Weight INSTALLATION The SRO 1SL may be front or rear mounted although front moun
5. r from whom the unit was purchased FIGURE 4 Connection of 2 SRO 15L Speakers in Parallel FIGURE 5 Connection of 2 SRO 15L Speakers in Series Part No 535453 311 a Gulton coway ELECTRO VOICE Inc 600 CECIL ST BUCHANAN MICH 49107 CO eioo wvur SS reo _ _ MANUFACTURING PLANTS AT E BUCHANAN MICH E NEWPORT TENN E SEVIERVILLE TENN E GANANOQUE ONT E LITHO IN U S A
6. ting is preferred because the bolts may be tightened fully It is important that recommended baffle openings and mounting hole locations be followed FRONT MOUNTING requires a 13 7 8 diameter cutout and a 14 9 16 bolt circle Mark baffle opening and screw locations on the blank panel first Drill the screw holes before cutting the large baffle opening lf 44 20 screws are used four screws are sufficient for secure mounting of the speaker TEENUTS are recommended for simple secure mounting if TEENUTS are used the holes should be 9 32 or 290 letter L drill The large cutout should be slightly beveled from the front of the panel to clear the speaker frame and permit firm seating of the rim on the mounting board Increasing the diameter by 1 32 all around the front is sufficient A half round wood rasp or similar tool is satisfactory for this operation With the speaker panel in the horizontal position place the speaker in the mounting hole to make certain that the rim fits flat against the mounting panel Apply glue to the flanges of 4 20 long shank TEENUTS 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 34 20 screws should be
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