Introducing the Warm Audio WA-CX12

Warm Audio, a company dedicated to recreating classic microphones at affordable prices, has introduced the WA-CX12, a modern take on the legendary AKG C12. First released in 1953, the AKG C12 has left an indelible mark on the history of recorded music, thanks to its innovative design and versatile performance. The WA-CX12 aims to capture the essence of the original C12 while offering modern features and improved accessibility for today’s recording studios.

History and Background

The AKG C12: A Groundbreaking Microphone

Released in 1953, the AKG C12 featured an innovative CK12 brass capsule with a 6-micron gold-sputtered Mylar diaphragm, providing exceptional sensitivity, wide frequency response, and high SPL handling. Its warm, rich sound and versatility made it a top choice for recording vocals, acoustic instruments, and orchestras.

A Studio Staple

By the 1960s, the C12 was used in top recording studios worldwide. Iconic artists such as Frank Sinatra, The Beatles, and The Rolling Stones relied on its sound. Later, artists like Michael Jackson, Bruce Springsteen, and Tom Petty turned to the magic of the C12. However, there aren’t many that still exist today. Limited production (fewer than 2,000 units) has made the original C12 rare and highly sought-after.

Warm Audio’s Mission

Recognizing the need for a more accessible version of this classic microphone, Warm Audio set out to create the WA-CX12, building upon their success with previous recreations like the WA-47 (Neumann U47), WA-87 (Neumann U87), and WA-251 (Telefunken ELA M 251E).

Design and Construction

CK12 Capsule Recreation

The WA-CX12 features a meticulously crafted recreation of the original CK12 brass capsule, complete with a 6-micron gold-sputtered Mylar diaphragm and dual-diaphragm design. This attention to detail ensures that the WA-CX12 captures the essential sound characteristics of the vintage C12.

Electronics and Components

At the heart of the WA-CX12 is a NOS (New Old Stock) Slovakian 6072a vacuum tube, known for its warm, smooth, and detailed sound. The microphone also features a custom Lundahl output transformer and high-quality components such as Wima and Nichicon capacitors, contributing to its overall performance and reliability.

Body and Power Supply

The WA-CX12’s body is constructed from solid brass with an electroplated nickel finish, giving it a classic, durable look. The microphone is accompanied by a custom solid-state power supply unit, which allows for selectable polar patterns (9 options) and connects to the microphone via a high-quality Gotham 7-pin GAC-7 cable.

Sound Quality and Performance

Frequency Response and Low Noise

The WA-CX12 boasts a wide frequency response range of 20Hz-20kHz, ensuring that it can capture the full spectrum of audio with excellent detail and clarity. Moreover, the microphone’s high sensitivity and low self-noise allow for clean, quiet recordings even in demanding situations.

Versatile Polar Patterns

One of the standout features of the WA-CX12 is its versatile polar pattern selection. With nine polar patterns to choose from, including cardioid, omnidirectional, figure-8, and six hybrid patterns, the microphone can adapt to a wide range of recording scenarios. The cardioid pattern is ideal for vocals and solo instruments, while omnidirectional is perfect for capturing room ambience and ensembles. The figure-8 pattern is excellent for vocal duets and Mid-Side (M/S) stereo recording, and the hybrid patterns offer even more flexibility for unique recording situations.

Specifications

• Capsule Type: Dual-diaphragm, 6-micron gold-sputtered Mylar
• Tube Type: NOS Slovakian 6072a
• Polar Patterns: 9 (Cardioid, Omnidirectional, Figure-8, and 6 hybrid patterns)
• Frequency Range: 20Hz-20kHz
• Sensitivity: -38dB re 1V/Pa
• Output Impedance: 200 ohms
• Max SPL: 138dB (0.5% THD)
• Signal-to-Noise Ratio: 82dB (A-weighted)
• Self-Noise: 12dB (A-weighted)
• Power Requirement: Custom power supply (included)
• Dimensions and Weight: TBD

Comparison to the Original C12 and Other Recreations

While the WA-CX12 aims to capture the essence of the original AKG C12, it’s important to note that there are some differences due to the availability of components and modern manufacturing techniques. Some purists may argue that the WA-CX12 doesn’t perfectly replicate the vintage C12 sound. However, it comes remarkably close, especially considering its much more affordable price point.

Furthermore, when compared to other modern C12 recreations, such as the Telefunken C12 clone, Bock Audio 507, and Peluso P-12, the WA-CX12 holds its own in terms of sound quality and versatility. However, some users may prefer the specific tonal characteristics of these other microphones, so it’s always a good idea to compare them in person if possible.

Accessories and Packaging

The WA-CX12 comes with a high-quality shockmount and a sturdy wooden case for safe storage and transport. Additionally, Warm Audio offers optional accessories, such as a pop filter and spare 6072a vacuum tube, ensuring that users have everything they need to get the most out of their microphone.

User Impressions and Reviews

Early feedback from recording engineers and producers has been largely positive, praising the WA-CX12 for its versatility and impressive sound quality, especially considering its price point. Many users have noted that the microphone does an excellent job of capturing the warmth and character of the original C12, making it a valuable addition to any recording studio.

However, it’s worth noting that some users have pointed out that the WA-CX12 may not be the best choice for every recording situation. This is  particularly true in untreated rooms or when recording extremely loud sources. Just like any sensitive condenser microphone, proper technique and a well-treated recording environment are essential for achieving the best results.

WA-CX12 Conclusion

The Warm Audio WA-CX12 is a successful recreation of the legendary AKG C12, offering impressive sound quality, versatility, and affordability. Although it may not be an exact clone of the original, the WA-CX12 captures the essence of the C12’s warm, rich sound and adaptability. This makes it an attractive option for recording studios and audio enthusiasts seeking a classic microphone without the vintage price tag.

As with any microphone purchase, it’s essential to consider your specific recording needs, budget, and personal preferences. The WA-CX12 is an excellent choice for those looking for a versatile, high-quality tube condenser microphone with a nod to classic design and sound. However, as with any major purchase, it’s always a good idea to compare it with other options in its class. If possible, test the microphone in your own recording environment before making a final decision.

Want to get your hands on the Warm Audio WA-CX12? See current price here.