For more product information: https://www.dspeaker.com/_files/ugd/eae281_236972ed9a484b46803c98252a3108bc.pdf
(New would be $499+tax: https://www.underwoodhifi.com/products/dspeaker)
Cash only, no crypto, not trades.
Call six-zero-two, 739-799 three
Features:
Measures and corrects the combined frequency response of your subwoofer system and the listening room
User-friendly automatic calibration procedure
Can be used with any active subwoofer
Minimum phase filtering, no significant algorithm delay
Correction range 16-144 Hz
Three user-selectable additional equalization filters
Single or multiple measurement point calibration
Measurement microphone is included
Ultra-compact enclosure: 5" x 3.2" x 1.1"
Low power consumption: 1.5 W
RoHS directive compliant