Top Circuit Filter Reviews

Soundstream BX-20Z Digital Bass Reconstruction Processor

Digital Bass Driver with Dash Mount Remote Bass Control.
Bass restoration circuit accurately recreates and injects low frequency information back into the signal path.
Bass equalization circuit contours the restored bass to your speaker subwoofers.
Bass maximizer indicator has 2 LED Indicators that flashes when the bass maximization circuit is activated.
PFM Subsonic filter switch to protect your subwoofers and fine tune the bass response of any system.

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Opteka 58mm 9 Piece HD Multicoated Graduated Color Filter Kit Set for Digital SLR Cameras Bundle with Opteka 58mm 9 Piece HD Multicoated Solid Color Special Effect Filter Kit & Accessories 8 Items

This Opteka 58mm 9 Piece HD Multicoated Graduated Color Filter Kit for Digital SLR Cameras comes with all the manufacturer accessories and a 5 Year USA Warranty along w/ an 8-piece bundle which includes Opteka 58mm 9 Piece HD Multicoated Solid Color Filter Kit, Opteka 58mm Close-Up Set (+1, +2, & +4) w/ 10x Macro Lens, Circuit City 58mm UV, CPL, ND4 Filter Kit, 58mm Petal Lens Hood, 58mm Collapsible Lens Hood, 58mm Lens Cap, Lens Cap Holder & Circuit City Microfiber Cleaning Cloth.
Graduated color filters (red, orange, blue, yellow, green, coffee, purple, grey and pink) provide a gradual color transition for a smooth blending effect.
Rotating frame to allow the user to bring the colored and clear filter portions into the desired position.
Double threaded allowing additional filters to be screwed one over the other.
Rotating frame to allow the user to bring the colored and clear filter portions into the desired position. Extremely solid and lightweight. No wobbling or cross-threading.

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Rockville SS8P 400w 8 Slim Under-Seat Active Powered Car/Truck Subwoofer Sub,Black

Rockville SS8P 8" 400w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub..
Enclosure is made out of cast aluminum which stays cool at all times. Peak Power Handling: 400 Watts..
RMS Power Handling: 100 Watts. Heavy Duty Mounting Feet. PWM MOSFET Power Supply. Low Level RCA Input. High Level Inputs with Auto Turn-On Technology. Adjustable Input Sensitivity. Soft Delayed Remote Turn-On. Thermal Protection Circuit, Short Protection Circuit. Overload Protection Circuit. Green Power/Red Protect LED. Phase Switch: 0° or 180°..
Low Pass Filter: 50Hz - 150Hz. Bass Boost: 0 - 12dB @ 45Hz. Built in Subsonic Filter @ 20Hz. THD: < 0.4%. Subwoofer Level Remote Control. Fuse Rating: Single 15A..
Specifications: Peak Power 400 Watts. RMS Power: 100 Watts. Impedance: 4 Ohm. Dimensions (L x W X H): 11.4" x 8.3" x 2.8" Inches. Frequency Response: 20Hz - 150Hz. Signal to Noise Ratio: >90dB. Sensitivity: 90dB @ 1w / 1m. Input sensitivity, Low level: 300mV. Input sensitivity, High level: 1.0V.

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NVX QBUS8P 300W Peak (150W RMS) Amplified and Loaded 8' Ported Under Seat Quick Bass Universal Subwoofer System with Remote Bass Knob

Space Saver - The combination of a built-in 300W amplifier that powers the 8” subwoofer makes this ideal for spatially challenged vehicles..
Variable Low-Pass Filter - A low-pass filter is an electronic circuit that removes all the notes below the filter's frequency setting. You will use the low-pass filter to primarily keep high notes out of your subwoofer. Adjust it from 50-150 Hz to best fit your system..
Ease of installation - Takes either speaker wire (High-level) or RCA cable (low-level) inputs. This makes connecting the QBUS8P to your radio easier since it's compatible with both factory AND aftermarket units!.
Automatic Turn-On - This circuit automatically turns the QBUS8P on whenever it senses an audio signal. This eliminates the need to run a remote turn on wire making installation a breeze..
Variable Bass Boost - Variable Bass Boost allows you to adjust the low bass within the boost range to just the way you like it..

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Soundstream T7.124rk Tarantula T7 12' Dual 4 Ohm Recone Kit

Digital Bass Driver with Dash Mount Remote Bass Control.
Bass restoration circuit accurately recreates and injects low frequency information back into the signal path.
Bass equalization circuit contours the restored bass to your speaker subwoofers.
Bass maximizer indicator has 2 LED Indicators that flashes when the bass maximization circuit is activated.
PFM Subsonic filter switch to protect your subwoofers and fine tune the bass response of any system.

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Rockville RW8CA 8' 600 Watt Under-Seat Slim Amplified Car Subwoofer +Wire Kit

Rockville USS8 8" 600w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub. 600 Watts Peak / 150 Watts RMS. Heavy Duty Mounting Feet. PWM MOSFET Power Supply. Low Level RCA Input..
High Level Inputs with Auto Turn-On Technology. Adjustable Input Sensitivity. Soft Delayed Remote Turn-On. Thermal Protection Circuit, Short Protection Circuit. Green Power/Red Protect LED..
Phase Switch: 0 Degree or 180 Degree. Low Pass Filter: 50Hz - 150Hz. Bass Boost: 0 - 12dB at 45Hz. Subsonic Filter: 20Hz - 50Hz. THD 82dB. Sensitivity: 90dB at 1w / 1m. Input sensitivity, RCA level 195mV. Input sensitivity, HIGH level 5.6V..

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Rockville USS8 8" 600w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub, Black

Rockville USS8 8" 600w Slim Under-Seat Active Powered Car/Truck Subwoofer Sub. 600 Watts Peak / 150 Watts RMS. Heavy Duty Mounting Feet. PWM MOSFET Power Supply. Low Level RCA Input..Impedance: 3 ohm.Speaker size:8 inches.
High Level Inputs with Auto Turn-On Technology. Adjustable Input Sensitivity. Soft Delayed Remote Turn-On. Thermal Protection Circuit, Short Protection Circuit. Green Power/Red Protect LED..
Phase Switch: 0 Degree or 180 Degree. Low Pass Filter: 50Hz - 150Hz. Bass Boost: 0 - 12dB at 45Hz. Subsonic Filter: 20Hz - 50Hz. THD 82dB. Sensitivity: 90dB at 1w / 1m. Input sensitivity, RCA level 195mV. Input sensitivity, HIGH level 5.6V..

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Rockville RW68CA 400w 6x8 Slim Under-Seat Active Powered Car/Truck Subwoofer Sub

Rockville RW68CA 6x8" 400w Slim Under-Seat Powered Car Subwoofer..
Enclosure is made out of cast aluminum which stays cool at all times. Peak Power Handling: 400 Watts. RMS Power Handling: 100 Watts..
Our most compact powered subwoofer. High Level Inputs with Auto Turn-On Technology..
Low Pass Filter: 50Hz - 180Hz. Bass Boost: 0 - 12dB @ 45Hz. Built in Subsonic Filter @ 20Hz. Adjustable Input Sensitivity. Includes remote bass knob. Soft Delayed Remote Turn-On. Thermal Protection Circuit, Short Protection Circuit, Overload Protection..
Heavy Duty Mounting Feet. PWM MOSFET Power Supply. Low Level RCA Input. Green Power/Red Protect LED. Phase Switch: 0° or 180°. THD: < 0.4%. Fuse Rating: 20A. Impedance: 4 Ohm.

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Donner Mini Auto Wah Pedal Dynamic Wah Guitar Effect Pedal Envelope Filter True Bypass

【Auto Wah】Fully controllable envelope filter with unique decay control, highly accurate and fast tracking..
【Four function knobs】SENS is used to control the sensitivity. RES is used to control the filter sharpness. Use DECAY to make filter frequency fall back to the resting point. RANGE is used to control the filter frequency range..
【LED Indicator】LED indicator shows the working state. Analog circuit design, true bypass provide transparent tone..
【Durable & Compact】Whole Aluminium-alloy classic, stable and strong..
【Note】DC 9V Adapter power supply. (NOT Included).

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Donner Guitar Pedal Board Case DB-3 Aluminium Pedalboard 20'' x 11.4'' x 4'’ with Bag

【7 WAY ISOLATED OUTPUT】Hiree power supply is designed for effect pedal. 7 Individual output: 9 Volt 100mA port x 6, 9V 300mA port x 1. Short circuit in one channel won't affect other channels function..
【SHORT-CIRCUIT / OVER-CURRENT PROTECTION:】All 7 outputs in this unit have separate short-circuit protection, i.e. short circuit in one channel won't affect other channels' function..
【NOISE FILTERING】This guitar pedal power brick is built in a powerful noise filter. It is so quiet that you can enjoy playing with clear and firm sound..
【Compact Size and No External adapter】Compact body and 5ft disconnectable AC power cord, very easy to manage and carry everywhere you go. for maximum space-saving at home or in your travel bag.Wide range input voltage from 100v to 240v is ideal for international travel..

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SoundXtreme Digital Bass Machine Processor ST-AP5

Dash Mount Remote Control | Bass Level & PFM Subsonic Filter | Bass Equalization Circuit.
Bass Output Control | Bass Output Control | PFM Subsonic Filter Control.
Parametric Bass Controls | PWM High Head Room Power Supply | Output Level 13.5 Volt.
Frequency Response: 10HZ-100KHZ | THD: 0.003% & S/N @ 130DB.

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Rockville SS8P 400 Watt Slim Under-Seat Powered Car/Truck Subwoofer Sub+Amp Kit

...ade out of cast aluminum which stays cool at all times. Peak Power Handling: 400 Watts. RMS Power Handling: 100 Watts. Heavy Duty Mounting Feet. PWM MOSFET Power Supply. Low Level RCA Input. High Level Inputs with Auto Turn-On Technology. Adjustable Input Sensitivity. Soft Delayed Remote Turn-On. Thermal Protection Circuit, Short Protection Circuit. Overload Protection Circuit. Green Power/Red Protect LED. Phase Switch: 0° or 180°. Low Pass Filter: 50Hz - 150Hz. Bass Boost: 0 - 12dB @ 45Hz. Built in Subsonic Filter @ 20Hz. THD: 90dB. Sensitivity: 90dB @ 1w / 1m. Input sensitivity, Low level: 300mV. Input sensitivity, High level: 1.0V.
Rockville RWK10 10 Gauge 2 Channel Car Amplifier Wiring Installation Kit. (1) 17 High Grade Twisted Pair of 100% Copper RCA Cable. 17' 10 Gauge Translucent Blue SuperFlex Power Cables. 17 18 Gauge Blue Remote Cable. 17 16 Gauge Clear Speaker Wire. 3' 10 Gauge Clear SuperFlex Ground Wire. Gold Plated AGU Heat Resistant Fuse Holder. 40 Amp ATU Inline Fuse. 7 Split Tube Loom. Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets . Soft abrasion proof insulating jacket allows for 100% improved flexibility. PVC outer jacket can with-stand an extreme temperature range of -40 to 220 degrees F.

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JoLida Audio JD202BRC Integrated Stereo Tube Amplifier Black

Factory add an Inductance transformer and Bipolar filter circuit to get the nicer sound for the MKIII.Come with a Tube Cage and VU meters..
Power Transformers: new imported 0.35, stack thickness 60MM (114-60)..
Output amplifier core: core 0.35 new imported thick high silicon (86-50)..
Some of Senior audiophile optimization the electric circuit,it is better at arom,intermediate frequency and bass..

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