Posted in the corazon thread but figured this was relevant here too
fuzzisokiguess wrote:The “vents” (there’s probably an exact word that I’m not thinking of) just behind the capsule look rad- do they change the sound? The fit on the xlr and copper cap is insane, btw
They actually massively do. alter the sound for the better. I've been messing around a ton with those mics and honestly enclosure changes seem to make the biggest impact. I've gone through close to a dozen little enclosure tweaks working towards this v3.
And they are basically vents. Without them, all the air behind the capsule just acts like a springy dampener on the capsule. Those little holes give it more headroom and balance out the frequency spectrum.
Have some graphs of a close miced Fender Twin Reverb
No Vents-Blue
Vented-Yellow
EQ to match Vented to not. -White They have identical circuits
Notice how the blue line always slopes down making it kind of muffled.
AKG 414-Blue
Vented-Yellow
EQ to match Vented to 414.-White They have identical circuits
See how the bulk of both the 414 and The Blood Spurt have a fairly flat line.
The 414 has more emphasis around 100 hz and cuts sub bass like around 80. It Also has more emphasis around 6k. And a handy little spike at 7k where a lot of sibilance is.