Reviews 4 layer High Frequency

Audio-Technica ATH-A990Z Art Monitor Closed-Back Dynamic Headphones Black

  • Designed to reproduce Hi-Res Audio, allowing you to hear your music the way it was intended.
  • Exclusive 45 mm True Motion Drivers improve transient response and minimize sound distortion for rich, detailed audio reproduction.
  • Features multi-layered air damping technology for extended mid-to-low frequency response.
  • Housings constructed of an aluminum/magnesium mix provide a lightweight, rigid structure that reduce unwanted resonance.
  • Three precisely placed vents within the layers work to control air flow and improve dynamics.
  • Highly flexible swivel design, with soft, memory foam earpads and headband ensure comfort even during long listening sessions.
  • Stainless steel acoustic mesh resistor provides improved high-frequency response, while bass acoustic resistor delivers accurate low-frequency response.
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Skar Audio SDR-10 D2 10' 1200 Watt Max Power Dual 2 Ohm Car Subwoofer

  • Peak Power: 1,200 Watts | RMS Power: 600 Watts.
  • 2.5″ 4-Layer High Temperature Copper Voice Coil.
  • Frequency Response Range: 28 Hz – 300 Hz | Sensitivity: 82.0 dB.
  • High Flux Ferrite Motor | Advanced Air Flow Cooling Design.
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Skar Audio SDR-8 D2 8 700 Watt Max Power Dual 2 Ohm Car Subwoofer

  • Peak Power: 700 Watts | RMS Power: 350 watts.
  • 2" 4-Layer High Temperature Copper voice Coil.
  • High Roll Foam Surround and Competition Grade Pressed Paper Cone.
  • Frequency Response Range: 30 Hz - 350 Hz | Sensitivity: 83.8 dB.
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JINGYUE X99 Gaming Motherboard Intel LGA 2011-V3 ATX Desktop Motherboard with Diagnostic Card Dual M.2 NVME/Four-Channel DDR4 ECC/5 PCIe/SATA 6Gb/s Heat Dissipation Server Motherboard Max 256G

  • 【Intel LGA 2011-3 socket】 This X99 desktop motherboard is used in the LGA 2011-3 socket and supports Intel i7, XEON E5 V3/V4 series processors..
  • 【Four channels DDR4 Memory Slots】 Support 4 DDR4 or DDR4 ECC memory, 2133/2400/2666/3000MHz effective frequency, the maximum capacity is 256G.....
  • 【High heat dissipation】 X99 D4 ATX motherboard comes with a high-frequency silent fan, plus a VRM heat sink can achieve efficient heat....
  • 【Game-level expansion slots】 expansion slots include 3 PCI-EX16 slots, 1 PCI-EX4 slot, 1 PCI-EX1 slot, 4 SATA 3.0 ports, 2 SATA 2.0 ports, 2 USB....
  • 【High-quality motherboard】 This desktop motherboard is made of 10-layer PCB board, which can effectively extend its service life while ensuring....
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Skar Audio SDR-18 D2 18 1200 Watt Max Power Dual 2 Ohm Car Subwoofer

  • Peak Power: 1,200 Watts | RMS Power: 600 Watts.
  • 2.5" 4-Layer High Temperature Copper Voice Coil.
  • High Roll Foam Surround and Competition Grade Pressed Paper Cone.
  • Frequency Response Range: 18 Hz - 250 Hz | Sensitivity: 87.3 dB.
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Sundown Audio E-15 v4 D2 15 500W RMS Dual 2-Ohm Subwoofer

  • Specifications: DC Resistance (Re): 7.75 Ω | Resonance Frequency (Fs): 36.95 Hz | Equivalent Volume (Vas): 52.35 L | Electrical Q Factor (Qes): 0.85....
  • Box Recommendations: Sealed Enclosure Suggestion: 2.5 cu. ft. | Ported Enclosure Suggestion: 3 - 4 cu. ft. @ 35 Hz | Displacement: 0.17 cu. ft. |....
  • Thick black anodized aluminum voice coil formers for maximum strength and heat dissipation | 4‐layer copper high temperature voice coil windings....
  • Custom tooled frame spacer / ventilation ring | High efficiency air‐flow management integrated into the motor for maximum voice coil cooling | Dual....
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Rockville Rock Shaker 8\ Inch Black 400w Powered Home Theater Subwoofer Sub

  • ...ion-Free Playback Even at Max Volume Listening! Very Clean Sound! . Enclosure is filled with fire resistant poly cotton. Detachable foam grill. Inputs / Outputs / Controls: . . RCA line input. RCA line output. Speaker High level inputs. Speaker High level outputs..
  • Volume control. Phase switch (0°-180°). Crossover Frequency control. Power switch. Standard IEC power cable included. Specifications: . . Amplifier: Class D. Woofer Impedance: 4 Ohm. Signal to noise ratio: 85 dB (Maximum output with THD+1003c1%, A-weight). THD: 1%. INPUT sensitivity: 88dB +/- 2dB. Frequency Response: 20 Hz - 200 Hz. 400 Watts peak output. 200 Watts RMS output. Voltage: 110-240V..
  • Product Dimensions in Inches: (W*H*D): 11. 8'' x 15'' x 13. 8''. Shipping Dimensions in Inches: (W*H*D)14. 6 ''x 18. 3'' x 18. 9 ''. Unit Weight: 18 LBS. Shipping Weight: 22 LBS. Color: Black.
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Skar Audio EVL-18 D4 18 2500 Watt Max Power Dual 4 Ohm Car Subwoofer

  • Peak Power: 2,500 Watts | RMS Power: 1,250 Watts.
  • 3" High Temperature Dual 4-ohm Voice Coil with Black Coating.
  • Competition Grade Paper Cone & High Roll Foam Surround | Fs: 38 Hz.
  • Premium Suspension Featuring the EVL Series Signature Red Two Layer Spider.
  • Sensitivity (SPL): 87.0 dB, Frequency Response: 20 - 300 Hz.
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NYC Acoustics NSE12L 12 1200W Powered/Amplified Car Subwoofer/Sub Enclosure+LED

  • NYC Acoustics NSE12L 12" 1200w Powered Car Subwoofer in Ported Enclosure w/ LED Lights..
  • 1200 Watts Peak power output. 400 Watts RMS. 3D molded acrylic dustcap. Loaded with a High Powered 12" Subwoofer..
  • Non-pressed paper cone with Kevlar reinforcement. Blue LED's Built-In. Expanded & Rolled Steal Basket. High Density Specially Treated Foam Surrounds..
  • High Power 50 Oz Ferrite Magnet with High BL Motor Structure. Vented Core Magnet Motor Structure. 2" High Temperature 4 Layer Aluminum Voice Coil..
  • Top Quality Washer: 114MM x 8MM. Top Quality T-Yoke Plate: 114MM x 6MM. X-Max: 12mm Peak-to-Peak Excursion. Impedance: 4-ohms. Frequency response:....
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