Reviews Variable Filter

Memphis Audio VIV900.5 75W x 4 + 500W x 1 Car Amplifier

  • Features: 5-channel car amplifier, 50 watts RMS x 4 + 300 watts RMS x 1 at 4 ohms / 100 watts RMS x 4 + 500 watts RMS x 1 at 2 ohms / 150 watts RMS x 2 bridged at 4 ohms + 500 watts RMS x 1 at 2 ohms, Class D amp technology.
  • Tuning Controls: front channels: Variable high- or low pass filter (10-5,000 Hz, 24 dB/octave).
  • Rear channels: Variable high-pass filter (10-500 Hz, 24 dB/octave) / Variable low-pass filter (50-5,000 Hz, 24 dB/octave) / Bandpass filter engages both.
  • Subwoofer channel: Variable subsonic filter (10-80 Hz, 24 dB/octave) / Variable low-pass filter (50-500 Hz, 24 dB/octave) / Variable bass boost (0-18 dB at 45 Hz).
  • Other Features: Optional wireless remote subwoofer level control available, Preamp inputs, Speaker-level inputs (require speaker wire to RCA adapters), Hinged magnetic cover plate conceals top-mounted controls, 7 color selectable LED logo, 4-gauge power and ground leads and a 80-amp fuse recommended — wiring and hardware not included with amplifier, No onboard fuses — when installing multiple amps in a system, an additional 80-amp in-line Fuse between the distribution block and this amplifier is.
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BOSS Audio Systems BX55 2 3 Way Pre-Amp Car Electronic Crossover with Remote Subwoofer Control

  • Front / Rear / Sub Input, Front / Rear / Sub Outputs, Remote Subwoofer Control.
  • Front High Pass Filter 65Hz to 4.5 kHz, Rear High Pass Filter 65Hz to 4.5 kHz.
  • Variable Subwoofer Filter 40 Hz – 4200 Hz, Variable High Pass Filter 65 Hz – 4.5 kHz.
  • Crossover Slope 12 dB / Octave, Variable Subwoofer Phase 0 – 180 Degrees.
  • Variable Bass Boost 0 – 18 dB, Variable Bass Boost Frequency 25 Hz – 250 Hz.
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BOSS Audio Systems BX35 Electronic Car Crossover - 3 Way Pre-Amp Fine Tune Your High-Mid-Low Range Speaker Frequencies

  • Front / Rear / Sub Input, Front / Rear / Sub Outputs.
  • Front High Pass Filter 65 Hz to 4.5 kHz, Rear High Pass Filter 45 Hz to 1.6 kHz.
  • Variable Subwoofer Filter 40 Hz – 250 Hz, Variable High Pass Filter 45 Hz – 5 kHz.
  • Crossover Slope 12 dB / Octave, Variable Subwoofer Phase 0 – 180 Degrees.
  • Variable Bass Boost 0 – 18 dB, Variable Bass Boost Frequency 25 Hz – 250 Hz.
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Memphis Audio VIV400.4 SIX FIVE Series 400W 4-Channel Car Amplifier

  • 65 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms) | 200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode).
  • Front channels: Variable high- or low pass filter (10-5,000 Hz, 24 dB/octave).
  • Rear channels: Variable high-pass filter (10-500 Hz, 24 dB/octave) | Variable low-pass filter (50-5,000 Hz, 24 dB/octave) | Bandpass filter engages both.
  • Variable bass boost (0-18 dB at 45 Hz) on front and rear channels.
  • Dimensions: 10-15/16″W x 2-1/4″H x 8-1/4″D.
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JONGSUN 82mm Variable ND Filter, S-Pro MRC 16 Layers Nano Coatings, More Than 10 Stop ND2-ND1000 Stepless Adjustment Graduated, Lens Cloth Kit, Camera Neutral Density Filter

  • 82mm Variable ND Filter Features Optical Glass Made in Japan, 16 Layers MRC and Nano Coatings..
  • 82mm Variable ND Filter Uses 2 Pics 16 Layer MRC CPL Filter of Different Diameters(79mm and 92mm, A Total of 4 Optical Glasses), So That Vignetting Does Not Appear in the Picture..
  • 82mm Variable ND Filter Unique Framework Design,Use Interval Adjustment Locking to Avoid Cross-over..
  • 82mm Variable ND Filter More than 10-Stop ND2-ND1000 Stepless Adjustment Makes Photography More Convenient and Faster..
  • We Laser Engrave Lettering Into Each MRC 82mm ND Filter Traction Frame to Ensure That The Lettering Won’t Ever Fade or Come Off After Aonsistent Use..
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MTX Audio JH7005 Jackhammer Series 700W 5-Channel Class-AB + D Car Audio Amplifier

  • 4 Ohm: 60 watts x 4 ch. + 275 watts x 1 ch. | 2 Ohm: 90 watts x 4 ch. + 450 watts x 1 ch. | 4 Ohm Bridged: 180 watts x 2 ch..
  • Frequency Response: 20Hz - 20,000Hz (Main Channels) + 20Hz - 250Hz (Subwoofer Channel) | High Pass Filter (Variable): 40Hz - 250Hz 12dB/Oct | Low Pass Filter (Variable): 40Hz - 250Hz 12dB/Oct.
  • Subsonic Filter (Variable): 20Hz - 50Hz 12dB/Oct | Bass Boost (0 - 12dB): 45Hz.
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American Bass PH-2500.1-MD-V2 Class D Digital Power Car Amplifier

  • 1 ohm stable D class mono-block amplifier, 2500 Watts RMS.
  • Variable subsonic filter: 10Hz to 50Hz at 24dB per octave.
  • Variable low pass filter: 35Hz to 250Hz at 24dB per octave.
  • Two amplifiers linkable connector and selector.
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JJC 52mm ND Filter ND2-2000 VND Variable Neutral Density Fader for Canon EF-S 24mm f2.8, Sigma 30mm f1.4, Fujifilm XC 15-45mm f3.5-5.6, Nikon AF-S 18-55mm Lens & Other Lenses with 52mm Filter Thread

  • ...ects such as waterfalls, streams, waves, clouds or any fast moving subject.
  • Eliminates buying many fixed ND Filters as it is designed with a built-in rotating ring that controls neutral density ranging from ND2 to ND2000 (1 to 11 f-stop). The heavier the density, the slower your shutter speed will be.
  • When using this variable ND filter at high ND values (9 f-stop or above) on wide angle lenses, it would appear "X" cross mark, vignetting, reflections or blur in the picture, this is unavoidable according to the structure and operating principle of a variable ND filter. If this is not acceptable to you, please go for a non variable ND filter, for example, a popular JJC brand fixed ND1000 10 f-stop ND filter.
  • The filter is constructed from German famous brand optical glass that features 9 layers of anti-reflection coatings on each side(total 18 layers), making the filter anti-scratch, anti-static, oil and water-resistant.
  • Compatible with any lens with 52mm diameter filter thread - This variable ND filter is double threaded, has 52mm inner thread(male) and 55mm outer thread(female), this design allows you to put on any 55mm thread accessories such as lens cap, screw-in type lens hood to the front of the filter.
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American Bass PH1600 Subwoofer Amplifier

  • Specifications: 1-Ohm stable. Mono - block hybrid amplifier. Max power @ 1 ohm: 4800 watts. RMS power @ 1 ohm: 2200 watts. Low levelInput & output. Frequency response: 20hz ~ 250hz.
  • Input level: 0.2v ~ 6v. Variable subsonic filter: 10hz ~ 50hz. Variable low pass filter: 35hz ~ 250hz. Varaible bass boost: 0 ~ 9db at 45hz. Variable phase shift: 0 ~ 180 degrees.
  • Remote gain controller. Two amplifiers linkable connector & selector. Fuse ratting: 120a. Linked fuse: 240a. Dimensions: 13.26 length x 6.5 width x 2.25 height.
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MOUNTO AF500 1/3hp 500cfm Industrial HEPA Air Scrubber Air Filtration System Dust Air Cleaner Negative Air Machine

  • Portable air scrubber and negative pressure machine with two-stage filter system and variable air flow control of 250 to 500 CFM for mold and sewage....
  • First stage standard paper pre-filter captures large particles, second-stage primary HEPA filter rated to capture 99.97% of remaining particles down....
  • Generate cleaner air for any environment..
  • 250-500cfm variable speed switch, including hepa filter change light.
  • Pre Filter 16*16*1inch, Hepa Filter 16*19*2inch, Same as Drieaz HEPA 500.
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ALPINE X-A90V 900 Watt 5-Channel X-Series Car Audio Amplifier Amp+Bass Knob

  • Package Includes: (1) ALPINE X-A90V 900 Watt 5-Channel X-Series Car Audio Amplifier Class-D Amp. (1) ALPINE RUX-KNOB.2 Remote Control Bass Knob For....
  • Remote Bass (RUX-KNOB or RUX-KNOB.2) Compatible. Specifications: CTA-2006 Power Rating: 100W RMS x 4 + 500W x 1 (2.
  • Dual speaker terminals simplify the hookup of multiple speakers. Heavy duty aluminum alloy heat-sink. Input sensitivity: High level: .5 - 10V Low....
  • Variable high-pass filter: 50 - 400Hz, -24dB/octave. Variable low-pass filter: 50 - 400Hz, -24dB/octave. Subsonic filter: 8 - 40Hz. Variable Bass....
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American Bass VFL4800-1D Class D Mono Hybrid Amplifier 4480 Watts

  • Specifications: 1-Ohm stable. Mono - block hybrid amplifier. Max power @ 1 ohm: 4800 watts. RMS power @ 1 ohm: 2200 watts. Low levelInput & output. Frequency response: 20hz ~ 250hz.
  • Input level: 0.2v ~ 6v. Variable subsonic filter: 10hz ~ 50hz. Variable low pass filter: 35hz ~ 250hz. Varaible bass boost: 0 ~ 9db at 45hz. Variable phase shift: 0 ~ 180 degrees.
  • Remote gain controller. Two amplifiers linkable connector & selector. Fuse ratting: 120a. Linked fuse: 240a. Dimensions: 13.26 length x 6.5 width x 2.25 height.
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American Bass VFLCOMP2.5K VFL Competition Amplifier 2500 Watts D Class

  • 1 ohm stable D class mono-block amplifier, 2500 Watts RMS.
  • Variable subsonic filter: 10Hz to 50Hz at 24dB per octave.
  • Variable low pass filter: 35Hz to 250Hz at 24dB per octave.
  • Two amplifiers linkable connector and selector.
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