EV Eliminator Monitor E 350 Watt 15IN

EV ELIMMON Details ^top

Description

The Electro-Voice Eliminator® Monitor is a 350-watt 2-way floor monitor that incorporates Electro-Voice's exclusive ring mode decoupling (RMD^TM) technology. The Eliminator monitor features a constant directivity 80° x 55° horn in a vertical orientation that provides usable monitor angles of 50° and 65°. The combined professional quality Electro-Voice manufactured components arrange in a horizontal array with a very durable/road worthy light weight enclosure. The result is a very high performance system with excellent vocal reproduction and extended bass response. The Eliminator Monitor incorporates Electro-Voice's exclusive ring mode decoupling technology. This technology deals with the common resonance or "ringing modes" found in all loudspeaker systems. It deals with mechanical modes utilizing mechanical solutions, and deals with acoustical resonant or ringing modes utilizing acoustical solutions. The result is substantially cleaner vocal reproduction and a response that is more uniform regardless of input level conditions. The system uses the newly developed DL15BFH low frequency driver to provide both extended low frequency response and cleaner fundamental vocal reproduction. It also utilizes the DH2010A high frequency pure Titanium driver coupled to a constant directivity 80° x 55° horn to produce extended high frequency response and low distortion upper vocal reproduction.

The Eliminator Monitor features a self resetting high frequency protection circuit, EV's PRO^TM circuit. This is included with the high quality passive network to prevent accidental high frequency overload and improve system reliability. The bass section of the Eliminator Monitor is designed using Thiele Small optimized parameters for a solid performance to 77 Hz. In addition to including RMD techniques, the 15'' (381 mm) DL15BFH woofer is specially designed to provide extended 350-watt continuous (1200-watt peak) power handling. These power handling ratings are achieved using a 6 dB crest factor which provides peak levels 4 times that above the continuous rating of 350-watts. The Eliminator Monitor also features a stand mount adapter on the woofer 1 3/8 diameter.)

Speaker Protection

The Eliminator Monitor, like all other vented systems, experiences rapidly increasing cone excursion below the boxtuning frequency, while the acoustic output decreases rapidly. Therefore, to protect the Eliminator Monitor and maximize the power output of the system, it is necessary to insert an active 45- to 80-Hz highpass filter into the circuit. The filter should have a slope of at least 12 dB per octave. Such subpassband filters are found in many crossovers and equalizers manufactured by Electro-Voice, as well as other commercially available equipment.

Enclosure Construction

The Eliminator Monitor enclosure is constructed of Road-Wood^TM, a structural material that combines the strength of highquality plywood with the density and acoustic damping of particle board without brittleness. Road-Wood^TM uses the same principle of crossbanding veneers, as in plywood, in order to achieve its very high rigidity. A tough liquid-phenolic resin is blended with long, narrow strands of hardwood. Alternate layers are perpendicularly bonded under intense heat and pressure to form panels of superior uniformity. Unlike many grades of plywood, Road-Woodô is dimensionally stable, water resistant and free from voids. A combination of dado-cut joints and tough adhesives ensure a sonically dead enclosure free from panel resonances. The densely woven, industrial-grade, abuse-resistant carpeting provides a finish that is both attractive and highly durable. Heavy-duty corner protectors, firmly secured rubber feet, recessed handles and a protective metal grille complete the picture and ensure that the Eliminator Monitor speaker system is ideally suited to a long and reliable life on the road.

Frequency Response The combination of a 15-inch woofer, widebandwidth high-frequency driver and an equalized crossover results in the wide and smooth overall response shown in Figure 1. This response was measured at 3.05 meters (10 feet), using a 4-volt swept sine-wave input in an anechoic chamber. No external equalization was used. Figure 1 has been averaged and corrected for 1 watt at 1 meter. Connections The Eliminator monitor is equipped with two parallel 1/4-inch phone jacks. (The Eliminator Monitor E version has two parallel Neutrik Speakon® NL4MP connectors.) Another system can be connected in parallel by using the other connector. Care must be taken not to abuse the amplifier by connecting impedances which are too low. Constant-Directivity Speaker System The crossover frequency and speaker component geometries have been selected so that the directional characteristics of the woofer and constant-directivity horn match at the crossover frequency to create a special system type ó the constant-directivity system. At higher frequencies the vertical coverage pattern remains constant and the horizontal pattern smoothly transitions to a 55° angle above 5,000 Hz. Response within the 80° x 55° rated coverage angle is uniform, which means dependable coverage without ìhot spotsî or dead zones at certain frequencies. The 80° x 55° dispersion characteristic also helps avoid early reflections from nearby surfaces which could degrade performance. The controlled directivity of the high- and low-frequency transducers also eliminates response irregularities caused by diffraction off nearby enclosure edges and, in combination with an essentially flat on-axis frequency response, produces a total acoustic power output that is uniform with frequency. Directivity A unique feature of the Eliminator Monitor is the constant-directivity dispersion provided by the 80° x 55° horn. The polar response of the system at selected onethird- octave bandwidths is shown in Figure 5. These polar responses were measured in an anechoic environment at 6.1 meters (20 feet) using one-third-octave pink-noise inputs. The frequencies selected are fully representative of the polar response of the system. Beamwidth of the system utilizing the complete one-thirdoctave polar data is shown in Figure 6. Directivity factor, R , and directivity index, Di, are plotted in Figure 7. Power-Handling Capacity Electro-Voice components and systems are manufactured to exacting standards, ensuring they will hold up, not only through the most rigorous of power tests, but also through continued use in arduous, reallife conditions. The EIA Loudspeaker Power Rating Full Range (ANSI/EIA RS- 426-A 1980) uses a noise spectrum which mimics typical music and tests the thermal and mechanical capabilities of the components. Electro-Voice will support relevant additional standards as and when they become available. Extreme, in-house power tests, which push the performance boundaries of the woofers, are also performed and passed to ensure years of trouble-free service. Specifically, the Eliminator passes ANSI/ EIA RS-426-A 1980 with the following values: RSR = 5.175 ohms (1.15 x RE) PE(MAX) = 350 watts Test voltage = 42.55 volts rms, 85.10 volts peak (+6dB) The ìpeakî power-handling capacity of a woofer is determined by the peak test voltage amount. For the Eliminator Monitor, a 85.10-volt-peak-test voltage translates into 1,400-watts short-term peak power-handling capacity. This is the equivalent of four times the ìaverageî 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 accurately, without clipping, the woofer will also perform accurately and reliably, even at these levels. Amplifier Recommendations.

The power-handling rating of the Eliminator® Monitor is 350-watts continuous. The specific tests used employ a crest factor (ratio of peak energy to continuous energy) of at least 6 dB. During extended testing, the Eliminator® Monitor is routinely subjected to peak levels far in excess of its continuous rating of 350 watts. Many amplifier designs are capable of producing peak power levels in excess of their ratings as well, so exact ìpairingí of loudspeaker rating and amplifier ratings is not necessary. Amplifier continuous ratings of 250 watts to 400 watts are suggested. Larger amplifier ratings are recommended for maximum dynamic range, but it should be recommended that amplifier continuous levels (as opposed to peak levels) be within the range quoted for the Eliminator® Monitor long-term average power-handling rating. Service

In the unlikely event the Eliminator Monitor requires service, the woofer and driver can both be replaced or serviced from the front. A service data sheet is available from Electro-Voice.

EV ELIMMON Specs ^top

Specifications
Typical Axial Frequency Response, Swept Sine Wave, 4 volts at 3.05 meters (10 feet), (anechoic environment, normalized for 1 watt at 1 meter; see Figure 1): 77-20,000 Hz (half space)
Low-Frequency 3-dB-Down Point: 77 Hz (half space)
Usable Low-Frequency Limit (10-dBdown point): 65 Hz (half space)
Efficiency: 3.3%
Long-Term Average Power-Handling Capacity per EIA Standard RS-426-A 1980 (see Power-Handling Capacity section): 350 watts
Maximum Woofer Acoustic Output: 8.3 watts
Sensitivity (SPL at 1 watt, 1 meter input, anechoic environment, swept sine wave): 99 dB
Dispersion Angle Included by 6-dBDown Points on Polar Responses, Indicated One-Third-Octave Bands of Pink Noise (see Figure 6), 4,000-20,000 Hz, Horizontal: 55° (+18°, -9°) 4,000-20,000 Hz, Vertical: 80° (+21°, -21°) Directivity Index Di, (Di = 10 log10 R (Q)) 800- to 16,000-Hz
Median (see Figure 7): 12.0 dB (+4.0 dB, -3.6 dB)
Distortion, 0.1 Full Power Input, Second Harmonic,
100 Hz:ñ27 dB, 4.7%
1,000 Hz:ñ35 dB, 1.8%
10,000 Hz:ñ19 dB, 11.4% Third Harmonic,
100 Hz:ñ36 dB, 1.6%
1,000 Hz:ñ44 dB, 0.6%
10,000 Hz:ñ34 dB, 2.1%
Transducer Complement,
Low Frequency: DL15BFH
High Frequency: DH2010A driver
HP85M constant-directivity horn
Box-Tuning Frequency: 60 Hz
Crossover Frequency: 2,000 Hz
Crossover Slope: 12 dB per octave
Impedance,
Nominal: 8 ohms
Minimum: 5.1 ohms
Input Connections: Two parallel 1/4-inch phone jacks (Two parallel Neutrik SpeakonÆ NL4MP connectors on Eliminator Monitor (E))
Enclosure Materials and Colors: Black carpet-covered Road-Woodô Black perforated metal grille Dimensions
Width: 640 mm (25.39 in.)
Height: 406 mm (15.98 in.)
Depth: 471 mm (18.53 in.)
Net Weight: 19.5 kg (43 lb)
Shipping Weight: 22.7 kg (50 lb)

Eliminator® Monitor Floor Monitor
• Exclusive Ring Mode Decoupling (RMD™)
• Integral stand adaptor
• PRO™ circuit provides HF driver protection
• Constant-directivity 80° x 55° horn
• Usable monitor angles of 50° and 65°
• 350-watt long-term rms power capacity
• Dual 1/4-inch phone jack or dual Neutrik Speakon® inputs 1

EV ELIMMON Documentation ^top

Click here for brochure (pdf)