The 4015-TL wide cardioid microphone is an upgraded version of the original DPA 4015. The wide cardioid polar pattern (also known as hemisphere) is the perfect fill-in between an omni and a more directional microphone.
The wide cardioid covers a greater sound angle and is an excellent choice for grand piano, guitar, marimba and percussion or as a spot mic for groups in a symphony orchestra. Likewise it is an excellent speech, dubbing or vocal mic as its enhanced richness on the bass end nicely complements many voices.
The 4015-TL has a linear on-axis frequency response from 40 Hz to 20 kHz and is intentionally designed with a soft, high frequency boost to offer a more brilliant sound in close miking applications and a linear response in the diffuse field.
It is phantom powered (P48), transformerless and can handle 158 dB SPL peak before clipping occurs. A 20 dB pad switch in the center of the XLR connector can be used to attenuate the output of the microphone.
...depending on room and isolation needs: Schoeps (cmc6 body with appropriate capsule - Mk4, mk22, mk2) , DPA (4006 TL, 4015 TL, 4011 TL), Josephson (c617 omni), Neumann (Km100 body with ak31, ak40, ak43 capsules). Transformerless is often king here, again no rules though. For preamps quiet, fast with somewhat higher gains (above...
...which are not colored mics), and knowing that you want a FET mic my first two choices would be a DPA 4015 TL or a Neumann TLM170R. Both are stellar microphones and IMO a big step up from both of your mics. I don't think a FET47 type mic would...
If your room is very good, then I would heavily lean towards the wide cardioid versions of either (DPA 4015 TL, or Schoeps CMC6 mk21). If you need more isolation then cardioid (DPA 4011 TL, or Schoeps CMC6 Mk4). Pure omnis are cool but they are too open and pick...
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