A Telefunken ELA M 251E large-diaphragm condenser mic, seen in its natural habitat.
By now, we’re all familiar with the many options out there for amp modeling. Mic modelers are another reliable asset to digital recording tech, and can rapidly grow your inventory with just a few clicks.
As guitarists, we’re very aware of amp-modeling and profiling technologies, such as the Line 6 Helix, Fractal Axe-Fx, Neural DSP Quad Cortex, and Kemper Profiler. While our bases are covered for these (with modelers available for every “holy grail” amp under the sun), we are still missing another vital area of the recording process—microphones—for the acoustic instruments and vocals we might want to capture.
What if we could record them using holy-grail-modeled microphones? This month, let’s evaluate microphone modeling to help you make better-sounding recordings. Tighten up, the Dojo is now open.
The Sincerest Form of Flattery
Microphone modeling is an intriguing advancement in recording technology, offering great flexibility and possibilities for musicians, producers, and engineers. Makers like Slate Digital, Antelope, and Antares make many offerings, from hardware to software.
Universal Audio’s Sphere DLX ($1299 Street), LX ($799), and their six new Standard Mic series have impeccably modeled classic mics, and when coupled with their classic mic pre and compressor plugins, you can enjoy the same highly coveted mic chains appreciated the world over.
How It Works
The technology behind microphone-modeling systems relies heavily on convolution and impulse response techniques. These techniques involve capturing the unique sonic fingerprint of a microphone by recording its response to a wide range of frequencies and sound pressure levels. The immediate benefit is that this means you can grow your mic locker exponentially and gain access to a wide range of legendary microphone tones and textures all from a single mic! Most modeling microphones are usually either small- or large-diaphragm, multi-pattern, condenser microphones that are capable of capturing a wide frequency range and dynamic response. By adding other modeling mics, you can record in stereo or surround, and/or record multiple instruments at a fraction of the cost of owning multiples of the modeled mics themselves.
A Wealth of Options
One significant advantage of mic-modeling systems is their ability to offer a vast array of microphone options within a single session instead of having the time-consuming duty of swapping them out to achieve different sounds. With a modeling system, you can switch between different mic models instantly and audition various mics to find the perfect tone for the recording.
“The same vintage microphone can sound different on different days depending on temperature, humidity, and the voltage from the wall.”
Another lovely bonus is that microphone-modeling systems also offer the ability to swap microphone characteristics after the recording has been made! Want to swap your AKG C12 for a Neumann U 47 long after the recording session is over? No problem! This is especially useful when the initial microphone choice may not have been ideal or when the production requires a different tonal character than originally intended.
Weighing the Pros and Cons
Some audio purists argue digital emulation can’t truly replicate the sound of a physical microphone, especially when it comes to vintage models that have unique characteristics developed over decades of use. The subtleties of these microphones and their aging components shape the way they interact with different preamps and compressors.
After making over a hundred records at Blackbird over the last eight years, I’ve grown quite familiar with a good portion of our 1,800-plus vintage mics, like Telefunken 251s, AKG C12s, Neumann U 47s and KM 84s, Shure SM7s and SM57s, RCA 44s and 77s, and Royer R-121s. These are the very same mic models that most modeling mics are trying to capture. But experience has taught me that not all microphones sound identical even if they are the same make and model (and year). Also, the same vintage microphone can sound different on different days depending on temperature, humidity, and the voltage from the wall (that’s why Blackbird has its own regulated power and all the studios strive for consistent temperature and humidity year-round).
For home studios and smaller production environments, microphone-modeling systems can be a game changer. You’ll get a wide range of high-end microphone sounds without the need for a large microphone collection, and the ability to change microphone models after the fact gives budding producers and engineers greater confidence and flexibility in their work.
In reality, most users find that the convenience, cost savings, and versatility offered by modeling systems far outweigh any potential shortcomings. Finally, keep in mind that even though the mic “profile” you choose (U 47, U 67, SM7, etc.) will be consistent day in and day out, the modeling mic itself is also still a mic and will require you to be mindful of these same issues I mentioned above in order for your mic “profile” to be as accurate as possible.
Until next time, namaste.
Have a bit of a budget? Here are eight options that will level up your at-home tones.
There are a million places where you can find the first handful of mics you need when you start to record. But what about when you have the basics down and need to get to the next level? I’ve gathered info about eight different mics that might hit your wallet a bit harder, but the results will be well worth it.
Shure KSM137
A matched pair of these ubiquitous condenser mics works wonders on piano, acoustic guitars, and even drum sets. The KSM137s sport a gold-layered Mylar diaphragm, subsonic filter, and a 3-position pad.
$699/pair
shure.com
Sennheiser MD 441-U
This dynamic mic is perfect for when you need pinpoint precision. It includes a treble boost, 5-position low-frequency contour switch, and a hum-compensating coil.
$1,099 street
sennheiser.com
AKG C414 XLII
This multi-pattern condenser mic is a bona fide classic. It can handle nine different polar patterns, features three different bass-cut filters, and gives you an LED light to keep an eye on clipping.
$1,319 street
akg.com
Neumann U 87 Ai
As one of the most legendary mics ever made, this new iteration has been updated with modern circuitry, switchable 10 dB pre-attenuation, and three directional characteristics.
$3,295 street
neumann.com
AEA N22
This active ribbon mic houses a custom-made German transformer, and a maximum SPL of 141 dB, so let those amps cook! It combines both vintage and modern elements in the RCA tradition.
$1,099 street
aearibbonmics.com
Royer R-121
The company’s flagship microphone might be the only mic to win a Grammy. The figure-8 pattern offers increased sensitivity, can handle very high SPLs, and gives equal response from either the front or back of the element.
$1,499 street
royerlabs.comom
Earthworks QTC50
This omni-directional condenser mic has plenty of headroom to capture even the loudest of audio sources. QTC (Quiet Time Coherent) allows the mic to excel even at lower volumes with strings, vocals, and distant sound sources.
$1,399 streetearthworksaudio.com
Telefunken ELA M 260
Originally released in the ’60s, this modern version features a new-old-stock EF732 vacuum tube along with a thread-on TK6x Series capsule that provides cardioid, hypercardioid, and omni polar patterns.
$1,295 street
telefunken-elektroakustik.com
Free your microphone placement and gain structure, and your EQ and compression will follow.
Hello everyone, and welcome back to another Dojo! In the last two columns, I’ve focused on bus mixing techniques to get your recordings more on point—and I hope that was helpful. This time, I’d like to place focus in the other direction and give you three tips to capture your best recorded tones yet.
In my experience, the best way to get great recordings begins with getting in tune with your inner ear and the tones you are hearing in your head. This understanding will act as a catalyst for the first important tip: choice and placement of microphones. As simple as this is, we run the risk of listening with our eyes instead of our ears, because we are creatures of habit. How many times have you placed the same mic in the same place on the same amp (or same place at the guitar, for acoustic players)? Did you really explore the possibilities, or was this the best solution at the time and now it has become ingrained? Maybe it’s time to re-think the process and try something new?
Regular Dojo readers are already familiar with the three most common microphones used in recording: condenser, ribbon, and dynamic. Regardless of what mics you have, use your ears and listen to the source you want to record. For example, listen not only to where the amp sounds the best at the speaker, but also in the room. For acoustic guitar, placing the mics near the 14th fret in addition to other locations can yield a wide variety of tones. If you are recording by yourself, make several different short recordings and document the mic placement for each, listen, and then make decisions. The idea here is that you want to get the sound you’re looking for without using any EQ. In short, if you don’t like the sound you’re getting, move the mics until you do!
Once the decision has been made, the second tip for making better recordings is to pay careful attention to your gain structure (aka recording level) and give yourself plenty of headroom. The best way to do this is to set the recording track’s fader in your DAW to unity (zero), and then adjust your preamp’s gain level until the signal meters between -15 and -5 for most DAWs (check your specific DAW to find out which VU metering type you are using). If you’re somewhere in this range, you’ll have good signal-to-noise ratio and ample headroom for loud passages, like when you kick in the overdrive channel for the chorus and solo sections.
A scenario like Fig. 1 has bad news written all over it. The track faders are pushed near the top of their range and the master bus has already peaked. This can happen quicker than you think if you didn’t set your input levels properly to begin with. If you find yourself in this predicament, you’ll need to recalibrate your gain structure for every track for the entire mix. Ouch!
The final tip is focused on signal processing and preserving the efforts of the first two tips. Once your tracking is completed, don’t be too quick to start adding copious amounts of EQ and compression. The reason for steps one and two was to mitigate the need for EQ and preserve the natural dynamic range of your tracks. Now, when you need to use EQ and compression, you can use it with subtlety and not out of necessity to fix a poorly recorded track.
As always, if you have any questions you can reach me at recordingdojo@premierguitar.com, and I also want to invite you to checkout my new single “Christian Graffiti” on your favorite music platform to hear all of these tips in action. Until next time, namaste.