Electro-Voice MTH-1 User's Manual
Contents
1. high frequency performance to 16 000 Hz The HP64M is a polypropylene horn with ex ceptional strength and performance The horn driver combination is securely mounted tothe mid horn by a heavy duty steel bracket The mid frequency section operates between 160 Hz and 1 600 Hz This horn loaded sec tion uses a DL10X A proprietary phase plug U S Patent No 4 718 517 is used to ex tend the high end output and blend seamlessly into the coaxial high frequency section Crossover To optimize performance with a low fre quency system such as the MTL 1 the MTH 1 should be used in conjunction with an active crossover with a minimum slope of 12 dB per octave and a crossover fre quency of 160 Hz Due to the high efficiency of the MTH 1 less amplifier input is needed to achieve a given sound output level Biamping The MTH 1 can be biamped by removing the input panel and following the instructions given The usable frequency ranges for the individual sections are 125 2 000 Hz for the mid frequency band and 1 200 16 000 Hz for the high frequency band Minimum cross over slopes of 12 dB per octave are recom mended A protection capacitor with a 3 dB down point of 1 100 Hz is in included in the high frequency section when in biamp mode The usable frequency response of the over all biamped system is 125 16 000 Hz the same response that is expected with the pas sive setup For maximum performance of the MTH 1 in full range2. A 1980 DL10X 254 mm 10 in woofer mounted on a 60 x 40 constant directivity horn The sys tem will reproduce the frequencies from 160 to 16 000 Hz The system shall be capable of producing average sound levels in excess of 130 dB in the long term and short term peaks of 136 dB The enclosure shall be constructed of black carpeted multilayer plywood and have a metal grille which attaches with four screws The dimensions shall be 591 mm 23 3 in tall 572 mm 22 5 in wide and 758 mm 29 9 in deep The system shall weigh 43 1 kg 95 Ib The loudspeaker system shall be the Electro Voice MTH 1 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 prod uct data sheet or owner s manual beginning with the date of original purchase If such malfunction occurs during the specified pe riod the product will be repaired or replaced at our option without charge The product will be returned to the customer prepaid Exclusions and Limitations The Limited Warranty does not apply to a exterior fin ish or appearance b certain specific items described in the individual product line statement s below or in the individual prod uct data sheet or owner s manual c mal function resulting from use or operation of the product other than as specified
3. application the addi tion of the MTL 1 low frequency loud speaker system is recommended This com bination forms the MT 1 full range high level sound reinforcement system For use as an MT 1 system the Electro Voice s Dx34 Digital Signal Processing unit or XEQ 3 electronic crossover equalizer time delay unit with the EQMT1 plug in modules may be used for crossing over the two sections Amplifier Power recommendations As noted in the Power Handling section below the MTH 1 has a random noise power capacity of 350 watts long term 1 400 watts peak per EIA RS 426 A 1980 The follow ing guidelines will help relate this to an ap propriate power amplifier output rating 1 To use the MTH 1 to full capacity skilled experts in sound system installation and operation will obtain the best results if the power amplifier is 2 0 to 4 0 times the long term average noise power rating of the MTH 1 Biampable Mid High Coaxial Module Speaker System speaker system For the MTH 1 this is 700 to 2 800 watts The caution cannot be made strongly enough however that this arrangement is only for experts or those who can disci pline themselves against pushing the system for ever higher sound levels and who can avoid accidents such as cata strophic feedback or dropped micro phones 2 A more conservative normal ampli fier size which will produce audible results nearly equal to those of the expert recom menda
4. five 5 years from the date of origi nal purchase The Limited Warranty does not apply to burned voice coils or malfunctions such as cone and or coil damage resulting from improperly designed enclosures Electro Voice active electronics associated with the speaker systems are guaranteed for three 3 years from the date of original pur chase Additional details are included in the Uniform Limited Warranty statement Electro Voice Electronics are guaranteed against malfunction due to defects in mate rials or workmanship for a period of three 3 years from the date of original purchase Additional details are included in the Uni form Limited Warranty statement For warranty repair service information or a listing of the repair facilities nearest you contact the service repair department at 616 695 6831 or 800 685 2606 For technical assistance contact Technical Support at 800 234 6831 or 616 695 6831 M F 8 00 a m to 5 00 p m Eastern Stan dard time Specifications subject to change without no tice Electro Voice Speakers and Speaker Sys tems are guaranteed against malfunction due to defects in materials or workmanship for a period of five 5 years from the date of origi nal purchase The Limited Warranty does not apply to burned voice coils or malfunctions such as cone and or coil damage resulting from improperly designed enclosures Elec tro Voice active electronics associated with the speaker systems
5. the system will also perform accurately and reliably even at these levels Suspending MTH 1 Enclosures The MTL 1 has been developed in conjunc tion with the HSMT 1 series of hanging hard ware The HSMT 1 kit allows the MTH 1 to be hung safely in a variety of orientations The combination of the HSMT 1 kit and MTL 1 enclosure has been certified by an independent structural engineer to be safe and secure Each HSMT 1 kit consists of a tube two brackets two eyebolys and the nec essary fasteners The installer must assemble the HSMT 1 kit by first drilling two holes in TED A NATH 1 Biampable Mid High Coaxial Module Spealer System to the MTH 1 enclosure in predefined posi tions and then screwing the brackets onto the steel tube which passes through the en closure Full instructions are included with each HSMT 1 kit A single MTH 1 requires two HSMT 1 s to suspend it horizontally or vertically both singly and in multiples A maximum of two cabinets can be sus pended in this manner Vertical is defined by having the central EV logo in its correct orientation as delivered although the logo is rotatable to allow it to remain upright in either rotation Full attention must be given to the instructions and limitations in the HSMT 1 kit instruction sheet Architects and Engineers Specifications The loudspeaker shall be a horn loaded type The mid frequencies shall be reproduced with one 300 watt EIA RS 426
6. E MTH 1 Biampable Mid High Coaxial Module Speaker System e Two way mid high horn loaded system e 350 watt long term power capacity e Rotatable coaxial mid high section Rugged road ready cabinet metal grille black carpet finish High 0 system for increased intelligibility e Neutrik Speakon inputs Biampahle When combined with the MLT 1 or MTL 1X forms an MT 1 system which is a highly efficient and compact system Description The Electro Voice MTH 1 is a 350 watt two way constant directivity horn loaded high efficiency main loudspeaker system The system may be biamplified or used full range with the internal passive crossover The MTH 1 mid high module combined with an MTL 1 or MTL 1X low frequency system forms a high output sound reinforce ment for a club large hall or outdoor events in a compact package which can be used eas ily by a two person crew The 60 x 40 high and mid frequency horns are coaxially mounted and are easily rotated together allowing the horizontal and verti cal coverage patterns to be interchanged The high Q pattern gives increased intelligi bility Combined with the trapezoidal enclo sure the high Q and rotatable horns give many options in placing this versatile enclo sure in tight spaces The high frequency section operates above 1 600 Hz The DH2T compression driver is coupled to the HP64M 60 x 40 constant directivity horn for smooth and extended
7. are guaranteed for three 3 years from the date of original purchase Additional details are included in the Uni form Limited Warranty statement NATH 1 Biampable Mid High Coaxial Module Spealer System 120 PTT ET LL LILI TIL dee MA PTT Ab I UL EL TT EE HL T MLL TUL ANI TT TT FE III DI FREQUENCY IN HERTZ Figure Z Axial Frequency Response SPL In dB HL CEREREM EREIGNETE ZI Eli ELT HELL LMM FE S LLL LU PREIS Figure 3 Harmonic Distortion 0 1 Full O Power Input LEVEL In dB 8 amp H am tt FREQUENCY IN HERTZ Fund HARMONIC 2nd HARMONIC 3rd HARMONIC ua3S S 1axeads ajnpoyw erxeo usrH prw aiqedweig HW MTH 1 Biampable Mid High Coaxial Module Speaker System NATH 1 Biampable Mid Hish Coaxial Module Spealer System Figure 4 Dimension 758 mm 29 9 in ee 572 22 5 In 23 3 In Figure 5 Two Conductor Cable BANANA PLUG Configurations Using Neutrik Speakon mm NLAFC Four Pin Connector E m s T SS GROUND INDICATOR N OR 1 2 INPUT TO _ MA SPEAKER SYSTEM t 25 V4 IN PHONE PLUG Nr OA c NL4F PIN DIAGRAM NATH 1 Biampable Micl Hish Coaxial Module Spealer System Figure 6 Beamwidth vs Frequency whole space an
8. axial Module Spealer System length steel grille protects the system from damage Large heavy duty metal corner pro tectors firmly secured rubber feet and re cessed handles complete the picture ensur ing that the MTH 1 speaker system is ide ally suited for a long and reliable life on the road MTH 1 Connections The MTH 1 is equipped with two paralleled Neutrik NLAMD V connectors selected for their ability to reliably deliver to the speaker components the high currents delivered by high wattage power amplifiers The NLAFC is a four pin mating connector for the NLAMD V and Figure 5 shows how the usual two conductor speaker cable should be wired to pins 1 and 1 of the con nector Two typical connectors at the power amplifier end of the cable are shown banana and 1 4 inch phone plugs The banana plug provides the more reliable connection Full range pin arrangements are 1 IN 1 IN 2 Not Used 2 Not Used Biamp pin arrangements are 1 MB 1 MB 2 HF 2 HF To find your local Neutrik dealer contact Neutrik USA Inc 195 S3 Lehigh Ave Lakewood NJ 08701 908 901 9488 Service In the unlikely event the MTH 1 requires service the woofers can be replaced or serviced from the front A service data sheet is available from Electro Voice Power Handling The MTH 1 comes in full range mode This switchable to biamp mode In biamp mode the
9. echoic environment Figure 7 Directivity vs Frequency whole space anechoic environment BEAMWIDTH IN DEGREES 6dB DIRECTIVITY INDEX D dB Liiiiis ees i DIRECTIVITY FACTOR R wiaysXs Jayeads npoW exeo US H PIW aiqedweig 1 HIW MTH 1 Biampable Mid High Coaxial Module Speaker System NATH 1 Biampable Micl Hish Coaxial Module Spealer System specifications Typical Axial Frequency Response swept sine wave 4 volts at 10 feet anechoic environment normalized for 1 watt 1 meter into woofer see Figure 1 160 16 000 Hz Low Frequency 3 dB Down Point 160 Hz Usable Low Frequency Limit 10 dB down point 125 Hz Half Space Reference Efficiency 18 5 Long Term Average Power Handling Capacity per EIA RS 426 A 1980 see Power Handling section Full Range 350 watts Mid Frequency 300 watts High Frequency 60 watts Sensitivity SPL at 1 watt 1 meter input anechoic environment swept sine wave 105 dB Dispersion Angle Included by 6 dB Down Points on Polar Responses Indicated One Third Octave Bands of Pink Noise see Figure 6 SPEAKER Biampable 2 500 16 000 Hz Horizontal 60 10 15 2 500 16 000 Hz Vertical 40 20 10 Directivity Factor R Q 630 16 000 Hz Median see Figure 7 23 9 414 8 10 2 Directivity Index D 630 16 000 Hz Median see Figure 7 13 6 dB 414 8 10 2 Distortion 0 1 Full Power Input see Figure 3 Second Ha
10. 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 repairs have been made to the product by anyone other than Electro Voice Service or any of its authorized ser vice representatives Obtaining Warranty Service To obtain warranty service a cus tomer must deliver the product prepaid to Electro Voice Service or any of its autho rized service representatives together with proof of purchase of the product in the form ofa bill of sale or receipted invoice A list of authorized service representatives is avail able from Electro Voice Service at 600 Cecil Street Buchanan MI 49107 800 234 6831 or FAX 616 695 4743 Incidental and Consequential Damages Excluded Prod uct repair or replacement and return to the customer are the only remedies provided to the customer Electro Voice shall not be li able for any incidental or consequential dam ages including without limitation injury to persons or property or loss of use Some states do not allow the exclusion or limita tion of incidental or consequential damages so the above limitation or exclusion may not apply 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 for a period of
11. long term average power handling ca pacity is as follows Mid Frequency 300 watts High Frequency 60 watts Electro Voice components and systems are manufactured to exacting standards ensur ing they will hold up not only through the most rigorous of power tests but also through continued use in arduous real life conditions The EIA Loudspeaker Power Rating Full Range EIA RS 426 A 1980 uses a noise spectrum which mimics typical music and tests the thermal and mechanical capabili ties of the components Electro Voice will support relevant additional standards as and when they become available Extreme in house power tests which push the perfor mance boundaries of the woofers are also performed and passed to ensure years of trouble free service Specifically the MTL 1 passes ELA RS 426 A 1980 with the following values Ra 7 6 1 15 x R Peaux 350 watts Test voltage 51 5 volts rms 103 1 volts peak The peak power handling capacity of a sys tem is determined by the peak test voltage amount For the MTH 1 a 103 1 volt peak test voltage translates into 1 400 watts short term peak power handling 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 However this sort of short duration peak is very typical in speech and music Provided the amplifier can reproduce the signal accu rately without clipping
12. rmonic 100 Hz 8 9 1 000 Hz 1 1 10 000 Hz 21 1 Third Harmonic 100 Hz 100 Hz 5 3 1 000 Hz 0 896 10 000 Hz 6 0 Transducer Complement Mid Frequency DL10X woofer 10 in MB horn High Frequency DH2T driver HP64M horn Box Tuning Frequency 160 Hz Recommended Crossover Frequency 160 Hz 1 600 Hz Crossover Slopes suggested 24 dB per octave ElectroVoice 600 Cecil Street Buchanan MI 49107 616 695 6831 616 695 1304 Fax Telex Communications Inc 1999 Litho in U S A Impedance Nominal 8 ohms Minimum 6 ohms Input Connections Two paralleled Neutrik Speakon connectors Suspension see Suspending MTH 1 Enclosures section HSMT 1 independently certified hanging kit Materials Enclosure Black carpet covered 3 4 in void free plywood Grille Black heavy duty perforated metal Enclosure Dimensions see Figure 4 Height 591 mm 23 3 in Width 572 mm 22 5 in Depth 758 mm 29 9 in Net Weight 43 1 kg 95 Ib Shipping Weight 49 9 kg 110 Ib Part Number 533096 9906 nin PA
13. tion is 1 0 to 1 4 times the long term average noise power rating of the speaker For the MTH 1 this is 350 to 490 watts 3 To be very conservative one can use an amplifier rated at 0 5 to 0 7 times the long term average noise power rating of the loud speaker For the MTH 1 this is 175 to 245 watts Request P A Bible Addition No Two Power Handling Capacity for more background on these recommendations Speaker Protection A self resetting high frequency protection circuit Electro Voice s PRO circuit is in cluded in the MTH 1 to prevent against ac cidental overdrive and improve reliability If the input power to the high frequency driver exceeds the nominal rating the protection circuit is activated and reduces the power delivered to the driver The system will re main in this mode of operation until the in put power is reduced to a safe level Frequency Response The MTH 1 s axial frequency response was measured in Electro Voice s large anechoic chamber at a distance of 3 meters 10 feet with a swept sine wave input Figure 2 has been averaged and corrected for 1 watt at 1 meter Enclosure Construction Intended to be used as a portable speaker sys tem the MTH 1 is ruggedly constructed of 3 4 inch void free plywood All joints are dado cut and the cabinet is finished with a densely woven abuse resistant carpet that is both attractive and highly durable A full NATH 1 Biampable Mid High Co
Download Pdf Manuals
Related Search