This warm analog sub bass is built around a fundamental sine wave at 49 Hz (G1) layered with a triangle wave to add harmonic warmth. A slow 0.2 Hz pitch modulation simulates analog oscillator drift, adding subtle movement. The sound is shaped by a 150 Hz low-pass Butterworth filter that keeps the bass deep and smooth while removing high-frequency buzz. A fast attack and smooth release envelope controls the amplitude, and gentle tanh saturation enriches the harmonic content and adds glue. The stereo output is a direct duplicate of the mono signal, lasting 2 seconds with a consistent, rounded tone.
This bass fits well in genres requiring warm, deep sub frequencies like house, techno, or lo-fi at moderate tempos. It works well layered under brighter bass or synths, providing a solid low-end foundation. In a mix, watch for the 150 Hz cutoff to avoid clashing with kick drums or other low-mid elements, and use EQ to carve space if necessary.