Reviews Optical Lowpass Filter

Behringer 914 Fixed Filter Bank Eurorack Module

• 28HP Fixed Filter Bank Eurack Module with 12 Active Bpass Filters.

Earthquake Sound SUB8 Passive in-Wall/in-Ceiling 8" Subwoofer

• Shallow Woofer System (SWS): Earthquake Sound is the original inventor of the famous and patented SWS series of low profile / shallow mounting subwoofers delivering deep bass for in-wall and in-ceiling applications.
• Lowpass Crossover Filter: The SUB8 is equipped with an iron core 100% copper wire lowpass crossover network to filter out voices and instruments leaving the listener with pure bass.
• Inverted Cone Design: Fill your room with deep and accurate bass that won't take up your entire living space.
• An inverted cone design allows the SUB8 to produce the maximum amount of excursion in shallow wall- and ceiling-mount applications.
• Edgeless: The edgeless and paintable design with magnetically attached round and square grilles included offer a more modern or high-end visual aesthetic that allows the SUB8 to vanish into the room.
• Easy Installation: Earthquake's Turn-N-Lock mechanism offers the installer or integrator a fast, safe, and secure installation.
• Simply position the subwoofer in place and tighten the screws evenly to secure the SUB8 to the wall.

BTECH Mini UV-25X4 25 Watt Tri-Band Base, Mobile Radio: VHF, 1.25M, UHF Amateur (Ham)

• Broad (Wide) / Narrowband (Narrow) Selectable.
• Recommended Accessories: Pair UV-25X4 with the Nagoya TB-320A Antenna (and RB-50 Magnetic Mount) for easy installation. The PC04 FTDI Cable is recommended for easy computer programming.
• Dual Watch monitoring VHF/UHF and 220Mhz: The 220 MHz band antenna lowpass filter is switched with a relay and the 2 meter lowpass filter and 70 cm highpass filters are switched with PIN diodes - resulting in a audible relay switch noise when monitoring 220MHz with VHF/UHF simultaneously. A relay that completely isolated the 220 MHz RF filter won't impact the RF performance of the 2 meter/70 cm bands. If monitoring multiple 220MHz or VHF/UHF simultaneously the relay is not heard or used..
• Tribander Mobile Radio Kit Includes: BTECH UV-25X4, Speaker Mic, 6 foot DC Cable with Cigarette Plug Connector, Radio & Mic Brackets, Mounting Hardware, and User Guide.

Erica Synths Black Lowpass VCF Eurorack Filter Module

• 10HP Eurack Voltage-controlled Lowpass Filter Module with Post-filter Drive.

Behringer 923 FILTERS Legendary Analog Dual Filter Module for Eurorack

• Vintage-sounding 923 dual filter module from the ‘70s.
• Authentic reproduction of the circuitry from the “Modular 35 & 15” Series.
• Artist roster includes world’s most famous pop, rock and jazz musicians.
• Separate Lowpass and Highpass filters with dedicated frequency cutoff controls.
• Each filter features independent audio inputs and outputs.

Korg Wavestate Wave Sequencing 37-Key Digital Synthesizer Bundle with Sustain Pedal, 1/4-Inch TRS Cables, and Knox Gear 4-Port USB 3.0 Hub (5 Items)

• ...deliver production-ready sounds. Each Layer has three dedicated effects.
• additionally, the Performance has a master reverb and parametric EQ. Along with standards such as compressors, EQs, choruses, flangers, phasers, and stereo delays.
• Multiple Filters: Add vintage character to your sounds with the aggressive MS-20 Lowpass or Highpass filters, or the strong, sweet Polysix Lowpass. Shape and refine with a full collection of resonant 2-pole and 4-pole Lowpass, Highpass, Bandpass, and Band Reject filters.
• Balanced Stereo Outputs: Balanced stereo outputs connects to any recording or monitoring system, and a stereo headphone output is provided for private playing or onstage cueing. Din-style MIDI jacks ensure connection to other MIDI-equipped instruments and audio gear. The wavestate supports class-compliant USB MIDI connections to Windows and Mac computers.
• Easily Expressive: Bursting with knobs and controllers, the wavestate invites you to explore. All of the basics–filter, envelopes, LFOs, effects–are at your fingertips with dedicated front-panel controls. Eight programmable Mod Knobs are customized to bring out the most in every sound, often taking them in entirely new directions.

Mirkit x Baofeng Radio UV-5R MK3X 5 Watt FCC Approved 2022 2100 mAh Li-ion Battery, Tri-Band Radio Mirkit Edition and Neck Strap Lanyard Mirkit Ham Radio Operator

• Broad (Wide) / Narrowband (Narrow) Selectable.
• Recommended Accessories: Pair UV-25X4 with the Nagoya TB-320A Antenna (and RB-50 Magnetic Mount) for easy installation. The PC04 FTDI Cable is recommended for easy computer programming.
• Dual Watch monitoring VHF/UHF and 220Mhz: The 220 MHz band antenna lowpass filter is switched with a relay and the 2 meter lowpass filter and 70 cm highpass filters are switched with PIN diodes - resulting in a audible relay switch noise when monitoring 220MHz with VHF/UHF simultaneously. A relay that completely isolated the 220 MHz RF filter won't impact the RF performance of the 2 meter/70 cm bands. If monitoring multiple 220MHz or VHF/UHF simultaneously the relay is not heard or used..
• Tribander Mobile Radio Kit Includes: BTECH UV-25X4, Speaker Mic, 6 foot DC Cable with Cigarette Plug Connector, Radio & Mic Brackets, Mounting Hardware, and User Guide.

Behringer Model D Analog Synthesizer

• Eurack-sized Analog Monosynth Module with 3 Oscillats.

Behringer Neutron Semi-Modular Analog Synth

• 80HP Eurack-sized Analog Monosynth Module with 2 Oscillats.

Dave Smith Instruments OB-6 6 Voice Analog Synthesizer

• 61-key 10-voice Polyphonic Analog Synthesizer with 2 VCOs.

Erica Synths Black Dual VCF Eurorack Filter Module

• 18HP Dual Multimode Filter with Highpass/Lowpass/Bpass Modes 16-b Spectrum Analyzer.

Erica Synths Black Polivoks VCF v2 Multi-Mode Eurorack Filter Module

PreSonus Eris Sub 8 Compact Studio Subwoofer

• 8-inch, front-firing, paper-composite transducer with high-elasticity rubber surround delivers smooth low-frequency transients..
• 100W Class AB amplifier (50W RMS) gives robust output with minimal distortion..
• Now comes included with Studio One Prime and Studio Magic plug-in suite, over $1000 USD worth of music production software..
• Input gain control gives -30 dB to +6 dB of continuously variable output..
• Continuously variable lowpass filter keeps resonances in the 50 Hz to 130 Hz range..