“Down & Front” is a distinct sensation experienced when singing in the lower area of the voice or as one descends the scale—assuming the vocal mechanism is functioning healthily. While many singers try to "place" their voice in the front of the face, this sensation is actually a natural byproduct of the physical state of the vocal folds.
The reason a singer feels this sensation is directly related to the size of the glottal slit—the space between the vocal cords. This space is determined by how much cord mass (in length, depth, and width) is vibrating to produce lower pitches. As you descend the vocal "staircase" from the second floor to the first, more of the vocal cord is engaged in vibration.
As the cord mass increases for lower notes, the glottal slit widens. This changes the behavior of the air column (the vibrating molecules moving through the larynx). Because the slit is larger, the air column is less "crowded." It becomes wider in diameter and shorter in height. Most notably, the direction of the vibrating air shifts its angle.
On high notes, the air column feels like it is directed "up and back" toward the soft palate. But as you move into your lower full voice, that column angles forward. You begin to feel the resonance directed underneath the hard palate. While specific vowels can cause slight variations in this feeling, the general sensation of being "Down & Front" is a physical reflection of correct coordination at the source.
When you experience the "Down & Front" sensation, it is a sign that your vocal cords are adjusting their length, width, and depth appropriately for the pitch. You don't need to force the sound forward; instead, you allow the healthy adjustment of the glottal slit to guide the air column to its natural destination. This creates a sturdy, resonant foundation for your lower range.