Electro-Voice FRX-122 User's Manual
Contents
1. FRX 122 High Output Compact Speaker System 12 inch two way design 110 x 60 asymmetric hom aims HF output down 15 relative to front baffle 300 watts long term power capacity Ring Mode Decoupling Quick convenient suspension OmniMount Series 100 compatible DH2T driver Passive or biamp Available in black BL white WH and unfinished UN 1 OmniMount is a registered trademark of OmniMount Systems Description and Application The Electro Voice FRX 122 is an unusually compact two way high efficiency constant directivity speaker system designed for indoor sound reinforcement in commercial installa tions such as churches meeting halls audito riums and for surround purposes in movie the aters Capable of producing sound pressure levels SPL in excess of 123 dB at 1 meter the FRX 122 will give full bandwidth repro duction without sacrificing sonic quality The FRX 122 features a 110 x 60 horn with asymmetrical vertical dispersion that aims horn output 15 down relative to the front baffle when the enclosure is oriented in the standard woofer on the bottom fashion This is useful in achieving uniform high frequency coverage in those many applications where esthetic considerations dictate that a compact speaker system be placed against a wall but speaker output should be aimed downward for best audience coverage For more infor mation see Figure 8 and the2. 15 8 ohms 45 1 cm 17 8 in Vertical Minimum Depth 60 10 20 6 0 ohms 22 9 cm 9 0 in Net Weight 20 9 kg 46 Ib Shipping Weight 22 3 kg 49 Ib e d 600 Cecil Street Buchanan MI 49107 800 234 6831 616 695 6831 616 695 1304 Fax SPEAKERS Full Range Install Telex Communications Inc 1998 Litho in U S A Part Number 534882 9829
3. Horn Orienta tion Notes section The DH2T compression driver provides smooth extended response to 20 kHz and features a titanium diaphragm and a unique convex drive Time Path phasing plug structure U S Patent 4 525 604 The optimally vented bass section of the FRX 122 is designed using Theile Small parameters for efficient performance to be low 75 Hz and utilizes a 300 watt DL12SX 12 inch woofer to provide high excursion with low coloration The FRX 122 is provided with a passive crossover which features 12 dB octave slopes centered at 1 8 kHz and EV s self resetting PRO circuit to guard the compression driver against damage The system can be easily converted to the biamp mode by removing the input panel assembly six screws and mov ing the four jumpers as indicated on the cross over When used in biamp mode the woofer uses pins 1 and 1 and the tweeter uses pins 2 and 2 The enclosure is constructed from baltic birch plywood and is available in three alternative finishes FRX 122 BL black textured paint FRX 122 WH off white textured paint and FRX 122 UN unfinished and ready to stain The grille is constructed from MDF and is covered with black cloth FRX 122 BL or al ternatively natural cloth FRX 122 UN and FRX 122 WH Ring Mode Decoupling RMD The FRX 122 controls both acoustical and mechanical ring modes to provide dramati cally increased intelligibility using tech niques learned from th
4. design consisting of a 12 inch woofer a high frequency compression driver on an injection molded constant directivity horn and a dividing network having a cross over frequency of 1 8 kHz The system shall be configurable in a biamp mode through in ternal switches in the crossover network The loudspeaker shall meet the following perfor mance criteria power handling 300 watts based upon RS 426 A 1980 stan dard for full range loudspeaker systems fre quency response smooth and usable at high SPL levels from 75 Hz to 20 kHz pressure sensitivity 99 dB SPL for 1 W at 1 m imped ance 8 ohms nominal 6 ohms minimum The system shall have a distribution pat tern with 110 nominal horizontally from 3 kHz to 20 kHz and 60 nominal verti cally from 3 kHz to 20 kHz with asym metrical coverage in the vertical plane aim ing 15 down when the enclosure is oriented with the high frequency horn at the top The enclosure shall be constructed from baltic birch plywood and braced appropriately and the grille will be constructed from MDF and cloth covered The dimensions shall be 58 4 cm 23 0 in high by 45 1 cm 17 8 in wide by 22 9 cm 9 0 in deep Net weight shall be 20 9 kg 46 Ib The system shall be the Electro Voice FRX 122 BL black texturlac paint with black cloth grille FRX 122 WH white texturlac paint with natural cloth grille or the FRX 122 UN unfinished ready for staining with natural cloth gril
5. invoice A list of authorized ser vice representatives is available from Electro Voice Service at 600 Cecil Street Buchanan MI 49107 800 234 6831 or FAX 616 695 4743 Incidental and Con sequential Damages Excluded Product repair or replacement and return to the cus tomer are the only remedies provided to the customer Electro Voice shall not be liable for any incidental or consequential damages including without limitation injury to per sons or property or loss of use Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not ap ply to you Other Rights This warranty gives you specific legal rights and you may also have other rights which vary from state to state Electro Voice Speakers and Speaker Sys tems are guaranteed against malfunction due to defects in materials or workmanship fora period of five 5 years from the date of original purchase The Limited Warranty does not apply to burned voice coils or mal functions such as cone and or coil damage resulting from improperly designed enclo sures Electro Voice active electronics asso ciated with the speaker systems are guaran teed for three 3 years from the date of origi nal purchase Additional details are included in the Uniform Limited Warranty statement For warranty repair or service informa tion contact the service repair department at 616 695 6831 or 800 685 2606 For
6. EGREES 122 4V 10 DISTORTION HORN UP 2 984 FREQ amp HARM SEPA et OI BIA ge f FRX 122 Hish Output Compact Speaker System 1 4 20 1 2 HEX HD CAP SCREW 1 4 20 x 1 1 2 HEX WASHER HD SCREW SHOULDER WASHER 38712 Be Figure 6 Mounting the FRX 122 Using the WCB 1 Bracket PRECISION Z VIEW LEVELIV ws FREQ 13 NOV 96 17 18 33 Figure 7 Impedance er 1 Ld Figure 8 FRX 122 Front and Side Views Showing Downward Aiming of HF Horn in Standard Woofer at the Bottom Enclosure Orientation see Horn Orientation Notes section sayeads pedwo jndjno u8IH ZZ 1 14 FRX 122 Hish Output Compact Speaker System ERES Directivity Factor 3 150 to Input Connections MAMAS siccome OMM ees Figure 4 Full Range Axial Frequency Response swept 11 2 47 5 3 6 Neutrik Speakon NL4MPR sine wave 4 volts at 10 feet on axis Directivity Index D 800 to 16 000 Hz connector 1 1 in parallel anechoic environment normalized for Median see Figure 4 with barrier terminal strip 1 watt 1 meter see Figure 1 10 4 dB 2 3 dB 1 6 dB Biamp 2 75 20 000 Hz Distortion 0 1 Full Power Input see Neutrik NLAMPR Low Frequency 3 dB Down Point Figure 5 connector pin 1 1 LF pin 2 2 HF 9 75H Second Harmonic LF Full Range Usable Low Fr
7. andling capacity This is the equivalent of four times the average power handling capacity and is a peak that can be sustained for only a few milliseconds How ever this sort of short duration peak is very typical in speech and music Provided the amplifier can reproduce the signal accurately without clipping the system will also perform accurately and reliably even at these levels Use in Cinemas The FRX 122 has features which make it par ticularly suitable for use in cinema surround sound It is black to complement most theater interiors The WCB 1 U bracket provides cost effective and safe method of suspending the FRX 122 at the correct 15 angle The high dynamics and high power handling offered by professional grade components make it especially suitable for digital signals Suspending the FRX 122 The FRX 122 is fitted with 34 20 threaded inserts and can be suspended in two ways The WCB 1 is U bracket designed for the FRX 122 that facilitales either horizon tal or vertical mounting See Figure 6 m 1 i the rear panel to allow the use of the OmniMount Series 100 support system safety chain should be used to ensure safe operation Obtain OmniMount specifications for full instructions The grille of the FRX 122 is securely attached on the front of the cabinet with four screws Architects and Engineers Specifications The loudspeaker system shall be a two way full range
8. e development of the Electro Voice X Array concert speakers There is much less coloration of the sound from resonating sources leaving only the intended sound to be heard by the audience The FRX 122 axial frequency response was measured in Electro Voice s large anechoic chamber at a distance of 10 feet with a swept sine wave input see Figure 1 The two responses show the two alternate rotational positions of the high frequency horn The directional characteristics of the FRX 122 were measured in Electro Voice s large anechoic chamber The test signal was one third octave filtered pink noise at the frequencies indicated A full spherical mea surement system was used All directional information was measured at 20 feet Figure 2 illustrates the horizontal and vertical polar responses Figure 3 shows the horizontal and vertical with the axial frequency response Figure 4 illustrates the total directivity of the FRX 122 The directivity factor R Q is the FRX 122 High Output Compact Speaker System FRX 122 Hish Output Compact Speaker System relative value at a point of the FRX 122 out put when compared to an ideal spherical response The directivity index D is calcu lated by D 10 log Ry Horn Orientation Notes Figure 8 shows front and side views of the FRX 122 in the standard woofer at the bottom orientation In this condition high frequency output is aimed down 15 Of co
9. equency Limit 10 dB 100 Hz 1 1 amp down point 3 9 HF Biamp Mode 5 48Hz 1 000 Hz 24 de amp Half Space Reference Efficiency 2 2 Enclosure Construction and Colors E 459 10 000 Hz Materials 9 Long Term Average Power Handling 8 9 Birch plywood with removable 4 Capacity per RS 426 A Third Harmonic cloth covered grille amp 1980 see Power Handling Capacity 100 Hz FRX 122 BL 2 section 3 8 Black textured paint black grille H 300 watts 1 000 Hz FRX 122 WH 5 Maximum Woofer Acoustic Output 1 9 White textured paint natural grille el 13 5 watts 10 000 Hz FRX 122 UN Q Sensitivity SPL at 1 m 1 W into 1 8 Unfinished ready to stain nominal impedance anechoic Transducer Complement natural grille 2 environment band limited pink noise Low Frequency Grille signal 100 15 000 Hz DL12SX 12 inch woofer Black or natural cloth on wood frame 99 dB High Frequency Suspension see Suspending the Beamwidth angle included by 6 dB DH2T Driver FRX 122 section down points on polar responses Box Tuning Frequency WCB 1 wall bracket horizontal and vertical planes 65 Hz OmniMount Series 100 support system indicated one third octave bands of Crossover Frequency Optional Accessories pink noise see Figure 3 1 800 Hz WCB 1 cinema wall bracket 250 1 600 Hz Crossover Slope Dimensions 140 50 12 dB per octave Height 3 150 16 000 Hz Impedance 58 4 cm 23 0 in Horizontal Nominal Width 110 0
10. le Limited Warranty Electro Voice products are guaranteed against malfunction due to defects in mate rials or workmanship for a specified period as noted in the individual product line statement s below or in the individual product data sheet or owner s manual be ginning with the date of original purchase If such malfunction occurs during the speci fied period the product will be repaired or replaced at our option without charge The product will be returned to the customer pre paid Exclusions and Limitations The Limited Warranty does not apply to a ex terior finish or appearance b certain spe cific items described in the individual prod uct line statement s below or in the indi vidual product data sheet or owner s manual c malfunction resulting from use or operation of the product other than as specified in the product data sheet or owner s manual d malfunction resulting from misuse or abuse of the product or e malfunction occurring at any time after re pairs have been made to the product by any one other than Electro Voice Service or any of its authorized service representatives Obtaining Warranty Service To obtain warranty service a customer must deliver the product prepaid to Electro Voice Ser vice or any of its authorized service repre FRX 122 Hish Output Compact Speaker System sentatives together with proof of purchase of the product in the form of a bill of sale or receipted
11. technical assistance contact Techni cal Support at 800 234 6831 616 695 6831 M F 8 00 a m to 5 00 p m Eastern Standard Time Specifications subject to change without notice Figure 1 Axial Frequency Response anechoic environment 1 watt at 1 meter into mid band eng ae am atom Up HOT Down Figure 2 One Third Octave Polar Response anechoic environment FRX 122 4V 10 1W1M MORN UP v DOWN EDS CHART 105 00 puse ERE H a UT LL UU UI a UD vd LUN LI uu eA CDI UU veo ANPU w AA Y M wiaisk Jayvads 1 eduro 1ndino u8tH 77 124 FRX 122 High Output Compact Speaker System FRX 122 High Output Compact Speaker System o n S FRX 122 High Output Compact Speaker System ASNAN SRS els REA E U wf Vi gt ke D d ai ra D E 0 U 3 ai 4 2 gt Q d N N tenn FRX 122 High Output Compact Speaker System FRX 122 Hish Output Compact Speaker System Figure 3 Beamwidth vs Frequency anechoic environment Figure 4 Directivity vs Frequency anechoic environment Figure 5 Harmonic Distortion 0 1 Rated Power Input 30 watts SEI ELE zzz GO em 7 SENESI Se See coy im A8 ANOLE D
12. urse rotating the system to place the woofer at the top will reverse this aiming Alternatively the horn alone may be rotated 180 by first removing the six 1 32 x inch Philips head screws which hold the bom driver assembly to the front baffle then rotating and reinstalling the assembly This alternative has the advantage of maintaining an upright orientation of the FRX 122 input panel and nameplate Power Handling Test Electro Voice components and systems are manufactured to exacting standards ensur ing they will hold up not through the most rigorous of power tests but also through continued use in arduous real life conditions The Loudspeaker Power Rating Full Range EIA RS 426 A 1980 uses a noise spectrum which mimics typical music and tests the thermal and mechanical capabilities ofthe components Electro Voice will support relevant additional standards as they become available Extreme in house power tests which push the performance boundaries of the system are also performed and passed to ensure years of trouble free service Specifically the FRX 122 passes EIA RS 426 A 1980 with the following values R 6 0 1 15 x R ohms 300 watts Test voltage 42 4 volts rms 84 8 volts peak The peak power handling capacity of a woofer is determined by the peak test voltage amount For the FRX 122 an 84 8 volt peak test voltage translates into a 1 200 watt short term peak power h
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