Top Mechanical Suspension Series Reviews

Sundown Audio U-12 D2 12' 1500W RMS Dual 2-Ohm U-Series Subwoofer

  • Sundown Audio U-12 D4 12″ 1500W RMS Dual 4-Ohm U-Series Subwoofer.
  • Specifications: DC Resistance (Re): 6.1 Ω | Resonance Frequency (Fs): 40.0 Hz | Equivalent Volume (Vas): 12.3 L | Electrical Q Factor (Qes): 0.38 | Mechanical Q Factor (Qms): 2.93 | Total Q Factor (Qts): 0.34 | Force Factor (BL): 33.7 NA | Moving Mass (incl. Air Load) (Mms): 284.5 g | Suspension Compliance (Cms): 0.06 mm/N | Sensitivity: 85.0 dB 1w / 1m.
  • Box Recommendations: Sealed Enclosure Suggestion: 1.0 cu. ft. | Ported Enclosure Suggestion: 2.0 cu. ft. | Displacement: 0.21 cu. ft. | Depth: 7.75 in | Outside Diameter: 12.83 in | Cutout: 11.01 in | Recommended Tuning: 32 Hz | Recommended Port Area: 32 sq. in..
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SUNDOWN AUDIO SD-4 12 D4 12' 600W RMS Dual 4-OHM Shallow SUBWOOFER Speaker New

  • Sundown Audio U-12 D4 12″ 1500W RMS Dual 4-Ohm U-Series Subwoofer.
  • Specifications: DC Resistance (Re): 6.1 Ω | Resonance Frequency (Fs): 40.0 Hz | Equivalent Volume (Vas): 12.3 L | Electrical Q Factor (Qes): 0.38 | Mechanical Q Factor (Qms): 2.93 | Total Q Factor (Qts): 0.34 | Force Factor (BL): 33.7 NA | Moving Mass (incl. Air Load) (Mms): 284.5 g | Suspension Compliance (Cms): 0.06 mm/N | Sensitivity: 85.0 dB 1w / 1m.
  • Box Recommendations: Sealed Enclosure Suggestion: 1.0 cu. ft. | Ported Enclosure Suggestion: 2.0 cu. ft. | Displacement: 0.21 cu. ft. | Depth: 7.75 in | Outside Diameter: 12.83 in | Cutout: 11.01 in | Recommended Tuning: 32 Hz | Recommended Port Area: 32 sq. in..
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(2) Memphis Audio MJP1522 15' 1500w MOJO Pro Car Audio Subwoofers DVC 2 ohm Subs

  • ... shorting ring for reduced inductance. Foam surround. Rigid paper cone. Progressive spider. Diecast basket. Single Sided compression terminals. Size: 15 Inch. Voice coil: DUAL 2Ω. RMS/PEAK: 750/1500 Watts. SENS: 87 dB. DEPTH: 7.88 Inch. CUT OUT: 13.84 Inch.
  • Thiele Small Parameters: Resonant Frequency (fs): 33.6 Hz. Mechanical Q (Qms): 7.95. Electrical Q (Qes): 0.823. Total Q (Qts): 0.746. Sensitivity: 87 dB. Xmax Linear: 0.51 in. Displacement: 0.29 cf. Air Volume of Suspension (Vas): 2.31 cf. Moving Mass (Mms): 334.4 g. Suspension Compliance (Cms): 0.067 mmN. Effective Piston area (Sd): 829.58 SqCm. Motor Strength (Bl): 9.3 TM. DC Resistance: 1 Ohms.
  • Voice Coil & Magnet: Impedance Series: 4 ohms. Impedance Parallel: 1 ohms. Voice Coil Diameter: 2.5 in. RMS Power: 750 watts. Peak Power: 1500 watts. Magnet Weight: 120 oz. Magnet Diameter: 6.69 in. Physical Dimensions: Mounting Depth: 7.88 in. Cutout Diameter: 13.84 in. Frame Outside Diameter: 15.9 in.
  • Enclosure Recommendations: Single Sub Sealed: 2.6 cf. Dual Subs Sealed: 5 cf. Single Sub Vented: 4.4 cf. Port Dimensions: 7″ x 6″ x 28″L in. Tuning Frequency: 34 Hz. Dual Sub Vented: 8.5 cf. Port Dimensions: 9″ x 9″ x 22″L in. Tuning Frequency: 34.
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(2) Memphis Audio MJP1544 15' 1500w MOJO Pro Car Audio Subwoofers DVC 4 ohm Subs

  • ... shorting ring for reduced inductance. Foam surround. Rigid paper cone. Progressive spider. Diecast basket. Single Sided compression terminals. Size: 15 Inch. Voice coil: DUAL 4Ω. RMS/PEAK: 750/1500 Watts. SENS: 88 dB. DEPTH: 7.88 Inch. CUT OUT: 13.84 Inch.
  • Thiele Small Parameters: Resonant Frequency (fs): 31.2 Hz. Mechanical Q (Qms): 6.558. Electrical Q (Qes): 0.727. Total Q (Qts): 0.65. Sensitivity: 88 dB. Xmax Linear: 0.51 in. Displacement: 0.29 cf. Air Volume of Suspension (Vas): 2.93 cf. Moving Mass (Mms): 305.92 g. Suspension Compliance (Cms): 0.085 mmN. Effective Piston area (Sd): 829.58 SqCm. Motor Strength (Bl): 12 TM. DC Resistance: 1.75 Ohms.
  • Voice Coil & Magnet: Impedance Series: 8 ohms. Impedance Parallel: 2 ohms. Voice Coil Diameter: 2.5 in. RMS Power: 750 watts. Peak Power: 1500 watts. Magnet Weight: 120 oz. Magnet Diameter: 6.69 in.
  • Physical Dimensions: Mounting Depth: 7.88 in. Cutout Diameter: 13.84 in. Frame Outside Diameter: 15.9 in. Enclosure Recommendations: Single Sub Sealed: 2.6 cf. Dual Subs Sealed: 5 cf. Single Sub Vented: 4.4 cf. Port Dimensions: 7″ x 6″ x 28″L in. Tuning Frequency: 34 Hz. Dual Sub Vented: 8.5 cf. Port Dimensions: 9″ x 9″ x 22″L in. Tuning Frequency: 34.
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Sundown Audio U-18 D2 18" 1500W RMS Dual 2-Ohm U-Series Subwoofer

  • Sundown Audio U-18 D2 18" 1500W RMS Dual 2-Ohm U-Series Subwoofer.
  • Specifications: DC Resistance (Re): 3.8 Ω | Resonance Frequency (Fs): 31.3 Hz | Equivalent Volume (Vas): 135.4 L | Electrical Q Factor (Qes): 0.37 | Mechanical Q Factor (Qms): 3.41 | Total Q Factor (Qts): 0.33 | Voice Coil Inductance (Le): 2.62 mH | Force Factor (BL): 29.9 NA | Moving Mass (incl. Air Load) (Mms): 444.1 g | Suspension Compliance (Cms): 0.06 mm/N | Sensitivity: 92.3 dB 1w / 1m.
  • Box Recommendations: Sealed Enclosure Suggestion: 3.0 cu. ft. | Ported Enclosure Suggestion: 4.0 cu. ft. | Displacement: TBA | Depth: 10.11 in | Outside Diameter: 18.66 in | Cutout: 16.69 in | Recommended Tuning: 32 Hz | Recommended Port Area: 64 sq. in..
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Sundown Audio U-15 D2 15" 1500W RMS Dual 2-Ohm U-Series Subwoofer

  • Sundown Audio U-15 D2 15" 1500W RMS Dual 2-Ohm U-Series Subwoofer.
  • Specifications: DC Resistance (Re): 3.8 Ω | Resonance Frequency (Fs): 37.9 Hz | Equivalent Volume (Vas): 54.0 L | Electrical Q Factor (Qes): 0.34 | Mechanical Q Factor (Qms): 3.10 | Total Q Factor (Qts): 0.31 | Voice Coil Inductance (Le): 2.44 mH | Force Factor (BL): 30.7 NA | Moving Mass (incl. Air Load) (Mms): 355.7 g | Suspension Compliance (Cms): 0.05 mm/N | Sensitivity: 91.2 dB 1w / 1m.
  • Box Recommendations: Sealed Enclosure Suggestion: 2.0 cu. ft. | Ported Enclosure Suggestion: 3.0 cu. ft. | Displacement: 0.24 cu. ft. | Depth: 9.05 in | Outside Diameter: 15.59 in | Cutout: 14.01 in | Recommended Tuning: 32 Hz | Recommended Port Area: 48 sq. in..
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Sundown Audio U-15 D4 15" 1500W RMS Dual 4-Ohm U-Series Subwoofer

  • Sundown Audio U-15 D4 15" 1500W RMS Dual 4-Ohm U-Series Subwoofer.
  • Specifications: DC Resistance (Re): 6.1 Ω | Resonance Frequency (Fs): 34.9 Hz | Equivalent Volume (Vas): 63.9 L | Electrical Q Factor (Qes): 0.39 | Mechanical Q Factor (Qms): 3.48 | Total Q Factor (Qts): 0.35 | Voice Coil Inductance (Le): 3.80 mH | Force Factor (BL): 34.6 NA | Moving Mass (incl. Air Load) (Mms): 353.0 g | Suspension Compliance (Cms): 0.06 mm/N | Sensitivity: 90.2 dB 1w / 1m.
  • Box Recommendations: Sealed Enclosure Suggestion: 2.0 cu. ft. | Ported Enclosure Suggestion: 3.0 cu. ft. | Displacement: 0.24 cu. ft. | Depth: 9.05 in | Outside Diameter: 15.59 in | Cutout: 14.01 in | Recommended Tuning: 32 Hz | Recommended Port Area: 48 sq. in..
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(2) Memphis Audio MJP1244 12" 1500w MOJO Pro Car Audio Subwoofers DVC 4 ohm Subs

  • ...orting ring for reduced inductance. Foam surround. Rigid paper cone. Progressive spider. Diecast basket. Single Sided compression terminals. Size: 12 Inch. Voice coil: DUAL 4Ω. RMS/PEAK: 750/1500 Watts. SENS: 85.68 dB. DEPTH: 6.23 Inch. CUT OUT: 11.34 Inch.
  • Thiele Small Parameters: Resonant Frequency (fs): 36.7 Hz. Mechanical Q (Qms): 7.217. Electrical Q (Qes): 0.764. Total Q (Qts): 0.69. Sensitivity: 85.68 dB. Xmax Linear: 0.51 in. Displacement: 0.16 cf. Air Volume of Suspension (Vas): 1.09 cf. Moving Mass (Mms): 241.3 g. Suspension Compliance (Cms): 0.078 mmN. Effective Piston area (Sd): 530.93 SqCm. Motor Strength (Bl): 11.23 TM. DC Resistance: 1.73 Ohms.
  • Voice Coil & Magnet: Impedance Series: 8 ohms. Impedance Parallel: 2 ohms. Voice Coil Diameter: 2.5 in. RMS Power: 750 watts. Peak Power: 1500 watts. Magnet Weight: 120 oz. Magnet Diameter: 6.69 in. Physical Dimensions:. . Mounting Depth: 6.23 in. Cutout Diameter: 11.34 in. Frame Outside Diameter: 12.94 in.
  • Enclosure Recommendations: Single Sub Sealed: 1.5 cf. Dual Subs Sealed: 2.7 cf. Single Sub Vented: 2.5 cf. Port Dimensions: 5" x 5" x 27"L in. Tuning Frequency: 36 Hz. Dual Sub Vented: 4.6 cf. Port Dimensions: 7" x 6" x 23"L in. Tuning Frequency: 36.
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Image Dynamics SQ1200.1D Monoblock 1200 Watts RMS SQ Series Amplifier

  • 15" Dual 4 ohm ID MAX V.4 Series Subwoofer | Pressed paper composite cone woofer | Parabolic EPDM rubber surround | Over 2" long linear excursion | RaDiaToR cooling system for heat dissipation | Radiant Diametric Torsional Reinforcement.
  • High compliance suspension design | Flat spider with NOMEX cloth woven tinsel leads | High-temperature flat wire, flat wound voice coil | Inverted dust cap with logo | Powder coated alloy proprietary basket.
  • DC Resistance (Re): 3.10 Ω | Resonance Frequency (Fs): 29.61 Hz | Equivalent Volume (Vas): 109.03 L | Electrical Q Factor (Qes): 0.75 | Mechanical Q Factor (Qms): 1.47 | Total Q Factor (Qts): 0.5 | Frequency response: 20-250 Hz.
  • Peak Excursion (Xmax): 44 mm | Force Factor (BL): 11.40 Tm | Piston Area (Sd): 934.79 cm2 | Sensitivity: 87.60 dB 1w/1m.
  • Mounting Depth: 10.40 in | Outside Diameter: 16.22 in | Cutout: 14.80 in.
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Mechanical Gaming Keyboard Gaming Keyboard TF200 Rainbow Backlight USB Ergonomic Gaming Keyboard and Mouse Set for Laptop Mechanic Keyboard Mouse Set Full-Key Rollover

  • RADIUM CARVING HOLLOW LUMINOUS CHARACTER: The key cap is processed by laser engraving and hollowing out process. It is durable and wearable and the....
  • MECHANICAL FEEL SUSPENSION CAP: Ergonomics, suspension key cap design, powerful button rebound, strong mechanical feel.
  • WATER RESISTANT GAMING KEYBOARD: The key hoard has a front Waterproof design with a drain hole at the bottom to prevent liquid spills.
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Schwinn S29 Mens Mountain Bike, 29-Inch Wheels, 18-Inch/Medium Aluminum Frame, Dual-Suspension, Mechanical Disc Brakes, Matte Black

  • Schwinn aluminum dual-suspension frame with a front suspension fork and rear shocks for ultimate bump absorption and durable trail riding.
  • Frame – 18” Medium | Suggested rider height – 5’ 9” to 6’ 2” | Chain size – 1.5” x 3/32 with 110 links | Tire size – 29 x 2.0 | Brake type – Mechanical.
  • The 21-speed shifters with derailleurs are perfect for a wide gear range and smooth shifts.
  • Schwinn alloy triple cranks and 7-speed freewheel combine to supply the right gearing at all times.
  • Front and rear mechanical disc brakes provide crisp stopping and steady speed control on descents and extra wide double wall alloy rims wrap around 2.1-Inch wide knobby mountain tires.
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HON, H919491, Single Cross Rails for 30\ and 36\ Lateral Files, Gray, 4/Carton, Sold As 1 Carton

  • METAL FILE CABINET: Our lateral 600 series file cabinets have an all-welded design with a double-walled base that stands up to demanding work environments.
  • SMOOTH GLIDE: No loud bangs and crashes, these office file cabinets have steel ball-bearing suspension drawers that open and close quietly and easily.
  • THOUGHTFUL DESIGN: The clean, straightforward office cabinet design complements panel-based workstations and metal desks.
  • our mechanical interlock system makes sure only one drawer is open at a time for stability while the built-in counterweight makes sure the cabinet stays upright.
  • BUILT BY AMERICA'S FILING LEADER: We use advanced machinery and continuous quality testing to bring you the finest products at affordable prices but keep you covered with the HON Full Lifetime Warranty just in case something goes wrong.
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AVASTA Mountain Bike for Men Women,27.5 Inch Adult Mountain Bicycle,27 Speeds Disc Brakes,Lock Out Front Suspension, Grey

  • ...deliver 27 speeds of ultra smooth shifting..
  • 【Sports tires】27.5 "X 1.95" CST tires handle pavement, gravel and dirt with ease.
  • The wheels feature double wall aluminum rim for lightweight strength and strong for added durability, all terrain tires for a durable riding..
  • 【Dual Disk Brake】Durable stainless steel mechanical front and rear mechanical disc brake giving you the stable and strong braking force and help you stop confidently in all conditions..
  • 【Easy To Assemble】This bicycle is 85% assembled with assembly tools. It was very easy to assemble it in 20-30 minutes. Height suggestions for riders: 66.9 inch - 72.8 inch (170cm-185cm).
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