Here is the 4 mics with Kel singing.
The Rain - HOME
Obviously all 4 mics are being recorded at once.
I used 4 x JLM Audio Dual 99v 500 series Mic Pres.
No HPF is engaged.
In all the tests the vocalist is around 8 inches back from the mics.
I tried to level match them as close as possible.
They are raw 24 Bit 44.1 k files.
Kel is playing electric guitar while he sings.
The Amp is in the vocal booth next door.