ReviewsLow Frequency High Values

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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EMF Meter, Household Radiation Detector, Smart Sensor Digital LCD, EMF Detector Dosimeter Tester Counter

  • ...Radiation Detector is ideal for the elderly, pregnant mother, and office workers.
  • Widely Applications – Come with flashlight, tripod mounting thread and sleek compact design make this EMF tester easy to carry and suitable for testing TV, computer, printer, microwave oven, refrigerator, cell towers, wire tower, low-frequency home appliances, and ghost hunting, etc.
  • This EMF Detector can help eliminate radiation risks that potentially harm your family’s health.
  • What You Get - 1 * EMF Meter, 1 * 9V Battery, and 1 * User manual.
  • We provide 5 years after-sale service. If you have any questions, please feel free to contact us, our professional after-sales team will solve your problem in time.
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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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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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YoBuyBuy 5800W DC12V Electric Fish Shocker Stunner Inverter Electro High Power Fisher Tilapia Fishing Machine

  • 1. Protection: it has short-circuit protection. reverse polarity protection and waterproof protection..
  • 2. High power and low energy consumption: with high power and low energy consumption and excellent results. the use of frequency conversation electronic technology..
  • 3. Full current limiting protection: intelligent pulse. high frequency or low frequency regulation. can be adjusted according to the need to adjust the frequency of electric field size..
  • 4. Easy to carry: with suitable size and suitable weight. this inverter is easy and convenient to use..
  • 5. Material: this inverter is made of good material. which is durable and useful..
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KZ EDA Dynamic Driver Earbuds Combos,3 in 1 in Ear Monitor Wired Phone Earphones Headphones, HiFi Music IEM Headsets with Removable Cord Without Mic

  • THREE PAIRS OF EARBUDS – KZ EDA dynamic driver earphones combos set is tuned by KZ accoustic team many times for the outstanding sound quality. The price of one set of KZ EDA in ear headphones is equal to three pairs of earphones and three music styles to meet your listening needs. The low-frequency dynamic performance is excellent, the mid-high frequency is upgraded, and the three-frequency connection is smooth..
  • THE GOLD EARBUDS WITH EXTRA BASSY SOUND – Focus on optimizing the mid-lows, making the bass strong and elastic. Deep dive, strong and powerful drum beats, excellent low frequency transient performance, suitable for DJ and songs with heavy metal rhythm. The magnetic gap of 0.15MM brings stronger output performance, lower distortion rate, and more realistic restoration of sound..
  • THE SILVER EARBUDS WITH BALANCED SOUND – Referring to the Harman curve, the three-frequency is balanced and powerful, the vocals are clear and sweet, the low-frequency dives and the high-frequency is transparent, and the sound texture is strong, suitable for pop music and other genres. Customized 0.035MM diameter high tension voice coil wire makes the vibration frequency more stable and efficient..
  • TRANSLUCENT CYAN WITH HIGH-RESOLUTION SOUND – On the basis of ex....
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(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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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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(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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Cofufu DIP Inductor Assorted Kit 28 value total 280pcs 1uH to 1mH

  • ...ces, automobiles, industrial applications, etc. Has passed strict certification and passed RoHs, each type is packed in anti-static bags, the box is small, easy to carry, and use.
  • ✅[High-Quality Chip Inductors]exquisite workmanship, excellent quality, stable inductance, good solderability, and heat resistance. Low frequency, more reliable performance, and lower energy consumption, sufficient voltage, more stable work, Durable, copper coil, higher efficiency.
  • ✅[Wide Application]Excellent inductors can be used stably in a variety of cruel work, widely used in speakers, communication equipment, mobile power supplies, imagers, computer hard drives, photocopying, air conditioners, cameras, smart washing machines, fax machines, TVs, automotive electronics, smart door locks, etc.
  • ✅[Cost-Effective & Time Saving And Labor Saving]Excellent inductors, starting from four points, are efficient, high-quality, fast, and durable, and fundamentally ensure that the inductors received by each user are perfect and cost-effective. The most important thing is that you don’t have to go out to the store to buy it, you can receive it at home, save more time and money.
  • ❤️[Service First] We do not produce fake or inferior products. In order to ensure that each customer....
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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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