Reviews High sensitivity Frequency Counter

(2) JBL JRX225 Dual 15\ Professional 4000w Passive DJ/PA Speakers 4 Ohm JRX 225

  • Features: JBI JRX225 Dual 15" 2000 Watt Passive DJ/PA Speaker. Dual JBI low frequency drivers with a 64 mm (2.5 in) diameter edgewound ribbon voice coil for greater efficiency and power handling. JBI 2414H-C 25 mm (1 in) polymer diaphragm compression driver.
  • Advanced network topology crossover design. High-voltage capacitors and inductors with massive cores and heavy gauge wire. Progressive Transition high frequency waveguide. 19 mm (.75 in) MDF (Medium Density Fiberboard) enclosure.
  • SonicGuard protects the high frequency driver from excess power without interrupting the performance. Non-resonant, all-steel handles. 18-gauge hexagon perforated, steel grille Dual-angle pole-mount socket allows the speaker to tilt 10. Details: Power Rating : 500 W / 2000 W.
  • Frequency Range (-10 dB) : 42 Hz - 18 kHz. Frequency Response (3 dB) : 62 Hz - 13 kHz. Sensitivity (1w/1m) : 100 dB SPL. Nominal Impedance : 4 ohms. Recommended Amplifier Power : 500 W to 1000 W into 4 ohms. Maximum SPL : 133 dB. Nominal Dispersion : 90 x 50. Crossover Frequency : 2.2 kHz.
  • Dimensions (H x W x D) : 1092 mm x 464 mm x 432 mm (43 in x 18.3 in x 17 in). Weight : 42.6 kg (94 lb). High Frequency Driver : JBI 2414H-C , 1" exit compression driver mounted on Progressive Transition Waveguide. Low....
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Pyle PL63BL 6.5' 360W 3-Way Car Coaxial Speakers Audio Stereo, Blue (Pair) and PL6984BL 6x9' 400W 4-Way Car Coaxial Speakers Audio Stereo, Blue (Pair)

  • PYLE PL63BL: 6.5'' Three way 360 Watt Speaker Systems with Power Handling: 360 Watt MAX, 180 Watt RMS for peak performance.
  • 1'' High Temperature ASV Voice Coil for total quality sound.
  • DESIGN: Standard 6.5'' Size Fits OEM Locations.
  • Includes Grills, Wires And Mounting Hardware.
  • PL6984: 6'' X 9'' 400 Watt Four way Speaker Systems complete with Power Handling of 200 Watts Rms / 400 Watts Max for quality audio performance.
  • FEATURES: 1.25'' High Temperature ASV Voice Coil.
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Martin Logan - ElectroMotion ESL - Hybrid Electrostatic - Each - Black

  • High frequency transducer: XStat CLS electrostatic transducer.
  • Low frequency driver : 8" high excursion, high-rigidity doped fiber cone with extended throw drive assembly, non-resonance asymmetrical chamber format.
  • MicroPerf panel is housed within a radical aluminum and composite AirFrame.
  • Proprietary Vojtko topology filter utilizing custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series, and low DF electrolytic capacitors in parallel.
  • Recommended amplifier power: 20-300 watts per channel, Crossover frequency: 500 Hz.
  • Convenient push-style speaker terminals for bare wires, pins, or bananas, Sturdy, 1/4-20 ETC spikes.
  • Frequency response: 42 - 22,000 Hz ±3 dB, Dispersion: 30-degrees x 34" line source, Sensitivity: 91 dB/2.83 volts/meter.
  • Nominal Impedance: 6 Ohms, 1.6 @ 20 kHz, compatible with 4, 6, or 8 ohm rated amplifiers.
  • Weight: 35.5 lbs. each, Dimensions: 52.1" high, 9" wide, 16.3" deep.
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(2) JBL Pro JRX212 12\ 2000w Professional Passive PA/DJ Speakers 8 Ohm JRX 212

  • Features: JBI Pro JRX212 12" 1000 Watt 8 Ohm Passive PA/DJ Speaker. JBI 12 in low frequency driver with a 64 mm (2.5 in) diameter edge wound ribbon voice coil. JBI 2414H-C 25 mm (1 in) polymer diaphragm compression driver. Advanced network topology crossover design.
  • High-voltage capacitors and inductors with massive cores and heavy gauge wire. Progressive Transition high frequency waveguide. 19 mm (.75 in) MDF (Medium Density Fiberboard) enclosure. SonicGuard protects the high frequency driver from excess power without interrupting the performance..
  • Non-resonant, all-steel handles. 18-gauge hexagon perforated, steel grille Dual-angle pole-mount socket allows the speaker to tilt 10. Specifications: Power Rating : 250 W / 1000 W. Frequency Range (-10 dB) : 60 Hz - 20 kHz. Frequency Response (3 dB) : 80 Hz - 18 kHz.
  • Sensitivity (@1m) : 98 dB SPL (1w/1m). Nominal Impedance : 8 ohms. Recommended Amplifier Power : 250 W to 500 W into 8 ohms. Maximum SPL : 128 dB. Nominal Dispersion : 90 x 50. Crossover Frequency : 2.1 kHz. Dimensions (H x W x D) : 584 mm x 399 mm x 325 mm (23 in x 15.7 in x 12.8 in).
  • Weight : 19.5 kg (43 lb). High Frequency Driver : JBI 2414H-C 1" exit compression driver mounted on Progressive Transition Waveguide. Low Frequency Driver : JBI M....
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Facmogu 2PCS Bass Subwoofer Speakers HiFi Full Range Woofer Loudspeaker 4 Ohm Anti-Magnetic Car Vehicle Audio Speakers for 2.0/2.1 Boom Box Satellites Speaker DIY (5 Inch)

  • Full Range Woofer Loudspeaker is a 5"/6"/8" set, 4 ohm speaker complete range of amplifier, subwoofer speakers with an amazing frequency and loudness range.
  • provides amazing sound from low to very high volumes ..
  • A full-range woofer consists of a single driver element or red voice coil group, in the shape of a radiating dome dust cap, which is acoustically active. In most speaker drivers, the construction of this dust cap is relatively acoustically inert. Comes in the form of a small cone, claimed to improve dispersion at higher frequencies..
  • Has good low frequency and high frequency response - leave lower frequencies for subwoofers or special cabinet designs to handle/boost low frequency boost. Full range with good sensitivity (low frequency) and a light voice coil (high frequency) - these speakers usually use stronger magnets than usual, which increases sensitivity which reduces power requirements at low frequencies as well as allowing for a lighter voice coil..
  • The core has a copper ring that reduces third harmonic distortion by eliminating the generation of induced currents in the pole pieces. Also allows to implement the system according to the configuration "Mid-Treble-Mid", "Low-Mid-Treble" or possibly "Twin Peaks". It is equipped with a paper me....
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Advanced Super Cardioid Microphone for Sony FDR-AX33/43/53/100/700 Stereo/Shotgun with Dead Cat Wind Muff

  • Transducer: Condenser, Polar Pattern: Super-cardioid, Frequency Response: 20-20kHz Selectable LCF @ 75dB / 150dB /octave, Shock-resistant structural....
  • Sensitivity: -43dB~-23dB enhanced: The low-frequency attenuation: 75Hz 15dB / octave. output impedance: 200Ω. High sensitivity super cardioid mic....
  • Advanced features include: 1. Adjustable Sensitivity with Visual Metering. 2. a pre-calibration function to obtain the best possible recording levels....
  • What's in the box: Shotgun Microphone, Foam windscreen, Dead Cat Wind Muff, Signal Cables, USB Cable, Carrying Case, Shock mount, XLR Adapter (If....
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Flysky FS-i6 6CH 2.4GHz AFHDS RC Transmitter w/FS-iA6B Receiver for RC Multirotor Helicopter Airplane Glider Quadcopter (Model_2)

  • This radio system uses low power electronic components and sensitive receiver chip. The RF modulation uses intermittent signal thus reducing even more power consumption.
  • 2)Reliable, interference free 2.4GHz AFHDS 2A signal operation..
  • This radio system uses a high gain and high quality multi directional antenna, it covers the whole frequency band. Associated with a high sensitivity receiver, this radio system guarantees a jamming free long range radio transmission..
  • 4).Associated with a High Sensitivity Receiver, This Radio System Guarantees a Jamming Free Long Range Radio Transmission Each Transmitter Has a Unique Id, When Binding with a Receiver, The Receiver Saves That Unique ID and Can Accepts Only Data From The Unique Transmitter..
  • Works in the frequency range of 2.405 to 2.475GHz.This band has been divided into 142 independent channels, each radio system uses 16 different channels and 160 different types of hopping algorith.
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Logitech Wireless Gaming Headset G930 with 7.1 Surround Sound, Wireless Headphones with Microphone

  • Headphone Driver: 1.6-Inch (40 mm), Frequency response: 20Hz-20KHz, Impedance: 32 Ohms, Sensitivity: 90dB SPL/mW.
  • Microphone Pickup pattern: Cardioid (Unidirectional), Type: Pressure Gradient Electret Condenser, Frequency response: 50-20KHz, Sensitivity: -40dBV/Pa re: 0dB = 1 Pa, 1KHz.
  • Dolby 7.1 Surround Sound, Seven discrete audio channels, SYSTEM REQUIREMENTS:Windows Vista, Windows 7, or Windows 8USB port.
  • Low-frequency effects (LFE) channel, Rapid-burst transmission.
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MartinLogan ElectroMotion ESL Electrostatic Floorstanding Loudspeaker - Each (Gloss Black)

  • High frequency transducer: XStat CLS electrostatic transducer.
  • Low frequency driver : 8" high excursion, high-rigidity doped fiber cone with extended throw drive assembly, non-resonance asymmetrical chamber format.
  • MicroPerf panel is housed within a radical aluminum and composite AirFrame.
  • 129 square inches of sound radiating surface on both the front and back.
  • Proprietary Vojtko topology filter utilizing custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series, and low DF electrolytic capacitors in parallel.
  • Frequency response: 42 - 22,000 Hz ±3 dB, Sensitivity: 91 dB/2.83 volts/meter.
  • Recommended amplifier power: 20-300 watts per channel.
  • Dimensions: 52.1" high, 9" wide, 16.3" deep.
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