Reviews Very Low Frequency

2023 AURSINC Ultra TinySA 4” Spectrum Analyzer – Portable V0.4.5.1 100kHz-5.3GHz Frequency Analyzer | Built-in 3000mAh Battery & 32GB SD Card | RBW LNA DANL Phase Noise RF Signal Generator

  • 2023 NEWEST TINYSA: Produced by Hugen, AURSINC ULTRA Tinysa owns high performance frequency in 100khz to 800MHz, and when in ultra mode, the analyzer can reach 5.3GHz. With new 4” touchscreen display and installed with the latest hardware system V0.4.5.1. tinysa is more professional, stable, sensitive and easy to be operated.
  • A Lab-grade Spectrum Analyzer: The ultra-wide range frequency can reach around 6GHz, together with the excellence of phase noise [email protected], DANL -166dBm/Hz.
  • In Ultra mode the input low pass filter is automatically enabled for all frequencies within the pass-band of the low pass filter (up to 750MHz). For higher frequencies the low pass filter will be bypassed and the measurement will be slower due to the multiple measurements per frequency required for the mirror and spur elimination algorithm.
  • Differences to the Former TinySa: The first big one is that now the default maximum frequency is 800mhz, so you no longer have to switch between low and high range,and can monitor the complete range in one sweep.
  • Second,In the level menu, there is the LNA, which will provide 20db of extra gain if you have very low level signal.
  • Lastly, RBW frequency from 200hz to 850khz which can be set to match the measurement requirements, meet ....
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Leverkusen 2010

  • Voice Coil: 2.5” Dual 4 Ohm Made in USA Voice Coil can withstand the true RMS rating this subwoofer is advised for. No Inflated power here..
  • Non-Pressed Paper Cone for top quality bass performance and Long-Lasting Durability..
  • 156mm Double Stacked Magnets very large for this voice coil and can handle the advertise Peak and RMS power.
  • 1200 Watt Max power and 600 Watts RMS Power.
  • Sensitivity (1w/1m): 91dB. Frequency Response Range: 15Hz - 450Hz. This woofer can handle deep low bass that you really can enjoy low bass music..
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XCFDP 15MHz DDS Signal Generator Counter,High Precision Dual-Channel Function Generator Arbitrary Waveform Frequency Meter 2.4’’ Screen 200MSa/s 15MHz

  • 【EASY TO OPERATE】Convenient operation interface, superior technical indicators and humanized graphic style. Its sine wave frequency output can....
  • 【SIGNAL STABILITY】The signal generator adopts large-scale FPGA integrated circuit and high-speed MCU processor, and the internal circuit adopts....
  • 【FREQUENCY METER FUNCTION】It supports scanning output from low frequency to high frequency or from high frequency to low frequency. The scanning....
  • 【HIGH PRECISION】This signal generator adopts dual-channel DDS signal and TTL electric level output to generate accurate, stable, low-distortion....
  • 【WIDE APPLICATION】The signal generator has excellent amplitude-frequency characteristics, small and beautiful appearance, and intuitive control....
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Rockville REQ231 Dual 31 Band 1/3 Octave Graphic Equalizer+3 Way Mono Crossover

  • ...z effective equalization range. Constant Q filters. Selectable 6dB or 12dB cut or boost range.
  • Output level LEDs (-10 to +17 dB). Bypass switch with status LED. Ground lift switch. Balanced XLR input/output. Subwoofer out. Channels: 2 (stereo). Connectors: XLR balanced inputs and outputs. Bands: 31 per channel. Frequency Centers: 20 Hz, 25 Hz, 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz, 100 Hz, 125 Hz, 160 Hz, 200 Hz, 250 Hz, 315 Hz, 400 Hz, 500 Hz, 630 Hz, 800 Hz, 1 kHz, 1.25 kHz, 1.5 kHz, 2 kHz, 2.5 kHz, 3.15 kHz, 4 kHz, 5 kHz, 6.3 kHz, 8 kHz, 10 kHz, 12.5 kHz, 16 kHz, 20 kHz.
  • Control Range: Selectable +/-12dB 0r +/-6dB. Input Impedance: 50k ohms. Output Impedance: 600 ohms. Maximum Output Level: +21dB. Level Control: +/- 10 dB. Signal to Noise: >93 dB. Distortion: 0.005%. Roll-off filters: 18dB/octave, Butterworth. Power Consumption: 15 watts. Weight Unpacked: 7.00 lbs. Weight Packed: 9 lbs. Width Packed: 5.87". Height Packed: 20. 5". Depth Packed: 9.62". Features of RX230: RockvilIe RX230 2-way Stereo / 3-way Mono rack mountable crossover.
  • Ability to mix 2 channels output. 24dB/Octave filters. Mute switches. Channel Gain Control: 0 to +12 dB. Low Frequency Level Control: -to +6 dB. High Frequency Level Control: -to +6 dB. Low Frequency to High Frequen....
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Flysky FS-GT3B 3Ch GT3B RC Transmitter and Receiver 2.4Ghz RC Car Remote Controller with 3 Channal GR3E Radio Receiver for RC Car Boat Rc Trail Crawler Truck

  • 【Used For】FlySky GT3B Radio Transmitter Remote Controller with GR3E receiver perfect used for rc car, rc truck, rc crawlers, and rc boat..
  • 【RC Transmitter and Receiver】Adopts AFHDS (Automatic Frequency Hopping Digital System). Super active and passive anti-jamming capabilities. Very low power consumption and stable performance. LCD screen display..
  • 【Great Anti-jamming】Working frequency between 2.40GHz-2.4835GHz has been divided into 160 frequency points, each system uses 16 points and 160 hopping frequency to avoid frequency jamming..
  • 【Remote Control Range】 Stable control your model 100 ～ 200m (ground), good works of out of control protection. Let the beginners can control the car or boat easily!.
  • 【Packing List】 1*FS-GT3B Transmitter, 1*GR3E Receiver, 1*Decoder, 1*Instructions. Any question please contact us feel free..
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KZ AS10 Five-Driver Stereo High Fidelity in-Ear Musicians’ Monitors with Removable Braided Audio Cable (Black Without Mic)

  • 3D PRINTING TECHNOLOGY - The internal acoustic structure is made by modern high-precision 3D printing technology.
  • FIVE BALANCED ARAMATURES - The sophisticated crossover circuit design fully utilizes the performance advantages of each balanced armature..
  • HIGHT RESOLUTION & RICH DETAILS - The 22955 low-frequency balanced armature which is customized for AS10, it is not only low-frequency strength but also full of explosive power.
  • AUDIPHILE & REMOVABLE CABLE - Professional wire providing excellent sound quality signal transmission, anti-pull, anti-torsional, anti-corrosion..
  • ONE-YEAR WARRANTY -You will get 1 year warranty and friendly customer service from the date of purchase. Please feel free to contact us if any problems, we are very happy to provide help for you. Thanks~.
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Presonus Eris E3.5 2-Way 3.5' Near Field Studio Monitor (Pair) with Knox Isolation Pads and Stereo Breakout Cable Bundle

  • BUNDLE INCLUDES: Presonus Eris E3.5 2-Way 3.5" Near Field Studio Monitor Pair, Isolation Pads (2-Pack), and 3.5mm TRS to Dual 1/4-inch TS Stereo Breakout Cable.
  • LOW-FREQUENCY TRANSDUCER: 3.5-inch (89 mm) Kevlar low-frequency transducer.
  • HIGH-FREQUENCY TRANSDUCER: 1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer.
  • ACOUSTIC PORT: Rear-firing acoustic port for superior bass-frequency reproduction.
  • VOLUME CONTROL: Front-panel volume control for speakers and headphone amplifier.
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KZ EDX PRO 1DD 10mm Dual Magnetic Dynamic Driver HiFi in-Ear Monitors KZ Earphones KZ IEMs with Detachable 0.75mm C Pin Cable (No Mic, Cyan)

  • 【Upgraded Version KZ EDX PRO Earphones】Upgrade version of KZ EDX earphone, Using a special dual magnetic circuit sound unit, the size reaches 10mm. Dual magnetic circuit dynamic unit brings a more natural low frequency response and transparency high frequency performance ..
  • 【Special 10MM Dual Magnetic Circuit Dynamic Unit】The upgrade version of kz edx in ear earphones use a special 10mm dual magnetic circuit sound unit, bringing a more natural low frequency response and transparency high frequency performance .The advantage of the dual magnetic circuit dynamic is in the strong and abundant magnetic ,which provides shocking low-frequency sound effects, and the gentle and sweet vocals, as if being in a concert scene..
  • 【Three Frequencies Equalization, Smooth To The End 】The electronic crossover board is integrated into the dynamic unit through sophisticated technology to enhance the performance of the low-mid frequency dynamic range. whether it is EMD Rock R&B or Classical Violin , it can play a strong role ..
  • 【Ergonomic Design &Comfortable Wearing】The same ergonomic cavity structure as always, the ligh....
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DaToo 500W Aquarium Heater PTC Fast Heating Fish Tank Heater 500 Watt Submersible with LED Digital Temperature Controller for 60 to 120 Gallon, 1 Yr Warranty

  • ...C Aquarium Heater: As we all know, it is not easy to keep large aquariums at a comfortable temperature at all times. So it's very important for aquarium hobbyists with 55 to 125 gallon large tanks to choose a perfect heater. DaToo 500W PTC aquarium heater, high-precision temperature sensing, 3 seconds fast heating, frequency conversion energy saving, sturdy and durable, double safety protection, let your beloved fish always enjoy the happiness brought by the warm water temperature!.
  • High Precision And Fast Heating System: There are two temperature probes on the top of the DaToo heater, which ensures that the DaToo has a more powerful temperature sensing capability and can easily maintain the temperature accuracy at ±0.5°F. 3 Seconds Fast Heating, DaToo uses PTC semiconductor ceramics as heating elements, which makes DaToo have very low energy loss and can convert 90%~95% of electrical energy into thermal energy, and the water temperature can start to rise within 3 seconds..
  • Leading Frequency Conversion Energy Saving Technology: Usually high-power heaters consume a lot of electricity, but DaToo not. DaToo 500W Aquarium Heater adopts leading frequency conversion heating technology. When the water temperature is close to the set temperature, the power w....
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