Active Electronic Stereo Crossover for subwoofer and satellites-RH Labs ABX-4

September 16, 2020 - Comment

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For sale is an RH Labs Model, ABX-4 Electronic Stereo Crossover for adding subwoofer(s) with your satellite speakers. 18 and 36db selectable slopes bass role off, plus normal and invert phase switches. Accomodates two subwoofers in stereo mode. Fully selectable output for each channel. Selectable High and Low Pass frequency as well as all pass. Discreet class A buffers in all passive circuits. Stereo low frequencies attenuates at 18/db per octave, the high frequency attentuates at 6db per octave from the selected crossover point down to 30 cycles. Slope is then stepped to 12/db per octave eliminating all possibility of subsonics reaching the high frequency drivers. External power supply is included for improved signal to noise ratio. The crossover also features an internal electronic bridging circuit allowing a stereo bass amplifier to deliver it’s full power to a single subwoofer without additional components. Requires power amplifiers and speakers to produce sound. Unlike passive crossovers, active crossover provides greater control and flexibility.


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