Bock Audio 507 Special – No Longer Available
- Bock 507 Studio Tube Cardioid Microphone
- Power Supply
- Custom Cable between PSU and Mic
- LB PRO Spider suspension
- Wood Box
- SE Electronics Reflexion Filter
- Atlas SB36W 62" Mic Boom w/Wheels
- 15' Mogami Gold Studio Microphone Cable
What makes it different?
The new Bock/Cardas elliptical capsule design strives to resolve the chronic in-band resonance issues of both large and small diaphragm microphones. Round capsules have a relatively low frequency in band resonance, typically around 1K. Small diaphragm mics usually have a much higher in band resonance, typically about 15K or higher. The elliptical capsule offers the best of both, avoiding the constant distance "edge to center" of round capsules, reducing in band resonances dramatically and expanding the application possibilities. The ZERO capsule also has many conventional attributes such as the time tested 6 micron gold sputtered diaphragm used in the BOCK 251 and edge termination design. The capsule is hand built in very small quantities in Germany.
The 5-ZERO-7 also offers many other unique features. A large body microphone, it uses a 3 layer headgrille to prevent moisture (and therefore dirt) from becoming a continuing issue in the sound and long term life of the capsule and microphone. A unique tube mic amplifier was designed of very high gain, vintage 47 inspired, with David Bock hand selected parts. No negative feedback or filtering is used in this microphone to affect sound in any way. An extraordinary US handmade BOCK design four section transformer is employed to complete the audio path.
The custom BOCK power supply is designed just for this microphone and combines the best of the old with new and modern parts. It is a special inductor based design, something not seen in modern production microphones today. It offers the best combination of long term power, low noise floor and high end mic sonic performance.
How do I use it?
The 507 microphone itself is a large body type, to give singers and artists a familiar feel in the studio to vintage mics they know and love. The fixed cardioid nature of the microphone guarantees it will always be in its most popular setting without switches and other devices to decrease long term reliability. The microphone sounds very big, utilizing a carefully crafted proximity effect for that extra deep intimacy preferred by artists and engineers alike. This sound is expected to be especially popular on male vocalists but will be expected to outperform most other mics on females as well. There will be a wide variety of color available with distance, so this will increase it’s flexibility. You will find that the 5-ZERO-7 brings something new to voices, something unavailable in any other microphone, past or present, at any price.
The Bock/Cardas Elliptical capsule can be fine tuned to more specific applications such as orchestra, etc.
SE Electronics Reflexion Filter
The SE Electronics Reflexion Filter is basically a portable device for recording live sound sources with reduced room ambience. It is an advanced composite wall which is positioned behind any microphone by means of a variable position stand clamp assembly which ships with the product. The main function is to help obtain a ‘dry’ vocal or instrument recording. This is especially useful in studios without proper acoustic treatment, but can also be used to help record takes in control rooms, where the performer also has to operate the recording device, or in rehearsal studios to reduce ambient noise.
The Reflexion Filter has 6 main layers. Firstly, a strong layer of punched Aluminum which allows sound waves to pass through it, diffused, to a layer of absorptive wool. The sound waves then hit a layer of Aluminum foil which helps dissipate energy and break up the lower frequency wave-forms, and from here they hit an air space kept open by rods passing through the various layers. The air gap acts as an acoustic barrier. The sound waves then pass to a further layer of wool and then through an outer, punched, Aluminum wall which further serve to absorb then diffuse the remaining acoustic energy.
The main absorber has 4 formed pieces of state-of-the-art specialist acoustic absorptive material attached to its face via the extended separation rods, which further serve to absorb and then diffuse the sound waves as they pass to the main filter.
The stand assembly comprises a mic stand clamp fitting, which attaches by means of a vertical joint to the horizontal bar assembly onto which both the Reflexion Filter, and any standard fitting shock mount can be fixed. The microphone (in its shock mount) can then be moved both vertically and horizontally along the bar, and the Reflexion Filter itself can be moved vertically to obtain the optimum working position.
How does it work?
The various layers both absorb and diffuse the sound waves hitting them, so progressively less of the original source acoustic energy passes through each layer. This reduces the amount of energy hitting un-treated walls and other surfaces so there is less of the original source reflected back as unwanted room ambience to the mic. The Reflexion Filter also helps prevent any reflected sound reaching the back and sides of the mic. Its shape and size have been carefully tested to maximize absorption while keeping ‘coloration’ down to only around 1dB, and leaving the microphone’s polar pattern unaffected.
'Independent test results from the Tongji University Audio Lab in Shanghai show audio image coloration with and without the sE Reflexion Filter. The tests (carried out by China's leading Acoustic Engineering University completely independently) clearly show extremely low levels of coloration when using a microphone with the Reflexion Filter while recording (20Hz to 20KHz).
This was one of the greatest challenges in designing the RF. Other companies have now started to try and copy our designs (without breaking the patents which are what make the Reflexion Filter actually work!), but fail to achieve such good results because the designs are too simplistic.
The RF comprises several layers of Aluminum and patented acoustic fiberboard separated by acoustically isolating air gaps... and therefore manages to remove large amounts of room ambience with a very compact design. The whole idea was to make the unit as effective as possible, but in the smallest space... otherwise what would be the point... you may as well treat a wall behind the mic.
The shape of the RF is also critical to the design as it randomizes any Reflections back from the surface of the filter. Products which are semicircular (without the flat diffuser panels the RF has) will concentrate any inconsistently reflected frequencies onto the mic... the worst possible scenario.
Another very poor design though is a simple 'V' shape behind the mic. This creates one of the worst coloration problems you can manage to achieve when recording audio. Think about problems of Bass Accumulation in room corners... the bass is accentuated worst in 90 degree corners, so any baffle placed behind a mic which is this shape creates huge coloration problems in bass frequencies. This also adversely affects higher harmonic frequencies because of the massive energy in bass frequencies exciting these higher harmonics. A simple flat panel on a wall positioned behind the mic is a much better solution, as it does not create coloration, but still limits at least some of the early reflections in the room.
All in all, it’s a very clever and desirable piece of kit. It allows you to record vocals, guitars etc with a ‘drier’ sound without having to have an acoustically treated room. It’s portable. It uses state of the art materials. It works… and it’s a fraction of the price of acoustically treating your studio environment!
The Atlas SB-36W 62" Mic Boom w/Wheels Features
- Professional Boom Stand for Stage and Studio Use
- Caster-Equipped Model Offers Silent and Effortless Mobility
- Adjustable 6 or 2-lb. Counterweight Provides Precision, Balance, and Stability
- Wear-proof, Three-Piece Clutch Offers Secure, Fast, and Noise-Free Adjustment
- Variable, Piston-Type Air Suspension System on SB-36W Model Ensures Microphone Protection
- Rugged Construction and Heavy-Duty Components Assure Long Service Life
- Made in U.S.A. to High Quality Standards
The Gold Series uses selected Mogami Neglex "Studio Quad" Oxygen Free Copper cable. This 4-conductor cable actually cancels noise caused by poor ground planes and high RF or electromagnetic fields. The ultra-low-noise spiral shield is the most densely wound available. All this engineering helps cure many of the problems encountered in a project or home studio, creating a much quieter recording environment with vastly improved Dynamic Range.
Virtually every major recording facility in the world is wired with Mogami cable. This means that just about any music you choose has been recorded using Mogami in the audio chain. This cable is famous for unmatched accuracy, extremely low noise and remarkable flexibility. Top engineers rave about its amazing clarity and silent background. If accuracy in reproduction is your goal, this is the cable for you.
- Microphone cable for studio use
- Gold-pin/black body Neutrik XLR connectors
- Neglex quad microphone cable
|Tube or Solid State||Tube|
|Frequency Range||20 Hz - 20 kHz|
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