You have just added a subwoofer to your system but something just isn’t quite right. Maybe what is needed is a little bit of equalization? It could be that the crossover built into your amplifier doesn't have a steep enough slope. Maybe you are using a ported enclosure and could really use a subsonic filter? Whatever the issue is, the bassFREQ can help resolve it.
Features:
Crossovers: Low-Pass Filter: 50Hz-400Hz, -24dB/Oct -- Subsonic Filter: 5Hz-40Hz, -24dB/Octt.
Equilization: Parametric (Boost/Q/Freq): 0 to +12dB / 1.5-5 / 30-80HZ
Channels: 2-Channel
Frequency Response: 5-400Hz
Class: AB
S/N Ratio (CEA-2006): S/N (SPK/RCA): >118dBA / >128dBA
RMS Power/Channel: Up to 60W
Dimensions: 6" L x 3.5" W x 1.25" H
