Microphone Capsules: K47, K67, K87, CK-12
We believe microphones are essentially EQ devices. We further believe that if all your microphones sound the same, then your gear isn’t serving you as well as it could. We can help you build some extraordinarily musical variety into your mic locker.
We offer two versions of the K47 design pioneered by Neumann: the RK-47, a modern recreation of the capsule used in the Neumann U47, and the RK7, a hybrid of the M7 and K47 styles. Both offer classic “mid-forward” presence, and a wonderful contrast to the over-bright condensers that have overtaken the market.
We have an AKG CK-12 style capsule called the RK-12; it recreates the brightness and intimacy of the AKG C12 and Ela M 251 microphones.
And we offer three versions of Neumann’s venerable K67: the RK-67, a faithful 6-micron copy of the original; the RK-87, a 3-micron version of Neumann’s K87 (with insulated backplates); and the K67LE, an all-brass, limited-edition capsule that is a sort of sonic hybrid of the K47 and K67 designs.
Read more about all of our microphone capsules.
Mic Mod Kits
Our new “mod kits” let you turn inexpensive microphones into studio workhorses. We have a basic kit for beginners, so you can get into your first circuit upgrade for less than $50. And we have kits that require a bit more experience, but deliver a fully rebuilt and optimized circuit — something that will go head-to-head with the best condensers in your mic locker.
We have circuit upgrade kits for the Apex 460 and Alctron T-11 tube mics, and numerous FET mics: MXL 990, 990S, 770, V63M, 2006, V250, MCA SP1, CAD GXL 2200 and GXL2400, Nady SCM-800 and SCM-900, Monoprice 60800. These are low-cost microphones with “good bones” — reasonably well-designed circuits that are somewhat crippled by the reality of meeting a low retail price point. By rewiring a critical portion of the circuit, and upgrading key components with audiophile-grade parts, we’re able to make these inexpensive mics compete with the high-dollar pedigreed mics you normally reach for first.
Read more about our mic mod kits.
DIY Microphone Kits
We now offer all-inclusive DIY microphone kits: custom PCBs, custom metalwork, precision components, and a variety of capsule choices. We have created several photo tutorials on large-diaphragm condenser microphone capsule replacement. The “microphone capsule swap 101” page shows step-by-step instructions for installing one of our large-diaphragm capsules. See also our listing of microphone capsule installation resources.
We now offer all-inclusive DIY microphone kits: custom PCBs, custom metalwork, precision components, and a variety of capsule choices.
We have created several photo tutorials on large-diaphragm condenser microphone capsule replacement. The “microphone capsule swap 101” page shows step-by-step instructions for installing one of our large-diaphragm capsules. See also our listing of microphone capsule installation resources.
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- RK-47 Microphone Capsule
- Summer Sale 2013
- Frequently Asked Questions
- Capsule Installation Instructions
- Gallery: RK-47 Microphone Capsule
- Audio Samples
- RK-12: a CK12 Microphone Capsule
- K47, K67, K87, and CK12 Microphone Capsules
- Gallery: RK-12 Microphone Capsule
- MXL 990 Capsule Swap Tutorial
- RK-67 Microphone Capsule
- RK7 Microphone Capsule
- RK-87 Microphone Capsule
- Bluebird Capsule Swap Tutorial
- Gallery: RK7 Capsule Photos
- U87 Body Kit
- K67LE Microphone Capsule
- Installation Guides
- Microphone Parts: Capsules, Mod Kits, and More
- Unsubscription Confirmed
- Subscription Confirmed
- Mic Mod Gallery
- 2012 Holiday Specials
- DIY Holiday Special
- Gallery: RK87 Capsule Photos
- DIY Electronics Tips
- Microphone Modification Kits
- MXL 990 Mod Kit
- MXL 2006 Mods
- MXL V250 Mods
- MXL 770 Mods
- MXL 990S Mods
- MXL V63M Upgrades
- Apex 460 Mod Kit
- 990A and 990B Retrofit PCB Kits
- CAD GXL2200 Upgrades
- Nady SCM800 Upgrades
- MXL 910 Upgrades
- Carvin CTM100 Mods
- Monoprice 600800 Mods
- MXL 550 Mods
- MXL 990 Capacitor Swap
- The “Linear 87″ Microphone Kit
- MXL 990 Mods
- MP-V57 PCB Kit
- MCA SP1 Mods
- Jim Williams Mod Kit for MXL Microphones
- MXL SMT Mini-mod Kit
- MXL 2001 Mods
- MXL V67 Mods
- Apex 435 Mods
- t.bone SC 400 Mods
- Gauge ECM-87 Mods
- Studio Projects C1 Upgrades
- Linear 87 Mod for the CAD GXL3000
- Closeout Sale
- MXL Omni/Cardioid Switch Installation Tutorial
- The Supersaddle
- Make Your Microphone
- Headbasket Survey