Electro-Voice Sentry 100EL
Professional Powered Monitor System
Near-field monitor for post production and live sound
Wide, uniform coverage
Extremely smooth frequency response
High power handling
High-Performance, built-in, 50-watt amplifier for remote operation
Description
The Electro-Voice Sentry 100EL powered monitor speaker system combines the advantages of the Sentry 100A monitor with a self-contained, high-Performance power amplifier. It is designed with the broadcast/recording studio engineer in mind, although it is well suited for a wide variety of professional applications. The Sentry 100EL offers uniform frequency response and dispersion across a wide range.
A Super-Dome tweeter is employed to faith-fully reproduce program material at high levels, with response out to 18,000 Hz and uniform dispersion (120(O) at 5,000 Hz) The low-frequency section is an 8-inch direct radiator woofer installed in an optimally vented enclosure with fourth-order Butterworth tuning. The optimally vented design is responsible for the unusual combination of small size, extended bass response and high efficiency. Such performance is simply not available in other enclosures of similar size.
The Sentry 100EL is housed in a utility cabinet wrapped in a special scratch-resistant, matte black vinyl. The cabinet size is intentionally designed fro rack mounting. The steel-reinforced grille is covered with a custom gray cloth. This provides maximum protection and a pleasing, aesthetic quality.
The Sentry 100EL may be driven room any line-level signal source. An XLR-type connector is provided for use with balanced sources, while a 1/4-inch phone jack accommodates unbalanced lines. Uses only the appropriate connector; both should not be connected at the same time. Although both inputs are protected against voltage peaks of up to 100 volts, connection from an external power amplifier is redundant and invariably results in increased noise and distortion.
Most importantly, a sharp cutoff, high-pass filter is included which has been precisely tailored to the Sentry 100EL response. It provides a dramatic reduction of energy-wasting, sub-sonic signals in the amplifier and woofer. By controlling low-frequency cone excursion and amplifier power, program material any often be reproduced at higher levels without distortion and without any reduction in acoustic low-frequency response.
A system level control is located on the front of the enclosure which varies the gain of the amplifier from zero over a useful range of more than 30 dB. Additionally, a red indicator lamp shows when AC power is applied to the Sentry 100EL. A replaceable AC power fuse is located on the rear panel of the system. The rating and type are identified beside the fuse holder. Under normal conditions, even with momentary overloads, the fuse will not blow.
Specifications
Frequency Response: 48 to 18,000 Hz (1m on Axis, Anechoic Environment, Swept One-Third-Octave Pink Noise +_3 dB)
Dispersion Angle Included by 6 dB Down Points, 10 Foot Microphone Distance, Anechoic Environment, One-Third Octave Bands Of Pink Noise
Horizontal
250 - 6,300 Hz (158° ±32° )
8,000 - 20,000 Hz (55° ±18° )
Vertical
250 - 6,300 Hz (140° ±40° )
8,000 - 20,000 Hz (52° ±13° )
Crossover Frequency: 2,000 Hz
Sound Pressure Level(1m, max. gain, 0 dBu into Balanced Input, Anechoic Environment, 300 - 2,000 Hz Average): 108 dB
Dimensions (H x W x D): 438 x 305 x 292 mm (17,25" x 12,0" x 11,5")
Net Weight: 15 kg (33 lb)
Amplifier Section
Continuous Sine Wave Power (6 ohm load, 120 V line): 50 watts
Dynamic Range: 92 dB minimum
Residual Noise (max. Gain, 600 Ω source, 20 - 20,000 Hz bandwidth): 400 µV max
Power Bandwidth (-3 dB): 30 - 20,000 Hz
Total Harmonic Distortion: (1,000 Hz, 50 watts): 0,05% typical
Low Frequency Filter
Slope : 12 dB/octave
-3 dB Point : 28 Hz
Balanced Input, Sensitivity (50 watt output): 0,775 V (0 dBu)
Impedance: 30 k Ω
Maximum Level: 8,0 V (+20 dBu)
Common Mode Rejection: 40 dB minimum
Connector Type: 3-pin XLR-type female
Polarity (for positive sound pressure): Pin 2 positive
Unbalanced Input, Sensitivity (50 watt output): 0,39 V (-6 dBu)
Impedance: 10 k Ω
Maximum Level: 30 V (+32 dBU)
Connector Type: 1/4-inch phone jack
Polarity (for positive sound pressure): Tip positive
Power Requirement
Domestic Model : 120 watts max. 105 - 130 V, 60 Hz
Fuse : 1-1/2 A slo-Bloe, Type 3AG MDL or MDX
Export Model : 210 - 260 V, 50/60 Hz
Fuse : 800 mA slow acting, type FTT
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