We just did a mic shootout with my harmony puppies, both wonderful altos. Most of my lead vocals were tracked with a B.L.U.E. Kiwi into
an Avalon AD2022. Some of the songs involve just one or the other of the singers, and several others all three of us. We put up the Kiwi, Rode NTK, Shure SM7B, Oktava MK319, AKG C414B-ULS, Studio Projects C-3, AKG C2000B, and AKG D690, a cheap dynamic I use in preference to
Shure SM58. All mics were tracked through the Avalon, and a Joemeek twinQcs.
The results were surprising. The Kiwi through the Avalon sucked in all cases. It sounded like an argument over who was going to sing lead. For cuts where we all sing together, the clear winners were Oktava MK319 into the Joemeek, and SM7B into the Avalon.
When it was just one backing track, the results varied between the 2 singers. Carolyn has a more piercing higher register. You know the notes she's singing are low, but her EQ has the highs boosted, like Joni Mitchell. She consistently sounded good through the Oktava/Joemeek combo, which tames her bright voice. Mo Fleming was a different story. She has a more jazz chanteuse sort of deep rich alto voice with detailed lows. She sounded good through
the SM7B, with the foam condom removed, and a pop filter added, and AKG C2000B, in both cases, through the Avalon. We did some scratch tracks with them singing into one mic, and the best compromises were the AKG D690 into the Avalon, and an X-Y pair of Oktava MC012's into the Joemeek, backed off about 4 feet, no pop filters were used (or needed) for these tracks.
What I got out of it is this- There isn't a *right* mic or pre for backing vocals, or lead vocals, or female vocals, or anything else like that. What there *is* is a mic and pre that are right for a particular singer, on a particular cut, in a particular room, in a particular mix. If you change the song, the key, the room, the mix, or the singer, the "right" mic and pre will often change.
In general though, I think there is a tendency for backing vocals to sound good through a mic and pre that are somewhat less detailed than those used for lead vocals. This seems to help keep the lead singer and the melody from getting lost in the mix.-Richie