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Articles May-June 2021

Pursuing the Pro Audio Trail

In conversation with Caroline Moss and Sue Gould

PT got in touch with the Pro AVL Asia magazine core team of Editor - Caroline Moss and Sales Director - Sue Gould, who between them boast of over three decades of experience in the pro audio industry..... read more

NJSM Marks a Milestone in the Business of Sound

From Rental Company to manufacturer and innovator, Nixon Johnny has guided and grown NJSM from a two-person company to a fifty-person company, continuing to expand into virtual events with NJSM Virtual Studio..... read more

Tech Savvy Environment for T-Systems

Eyte Technologies installs high-tech AV Solution at T-System’s Experience Center facilitating brand value and delivering superior customer experience..... read more

Conversations with SudeepAudio

Sudeep Audio, one of India’s first pro audio web store selling studio software and equipment online commenced its YouTube Channel, ConverSAtions, in 2011 to share the journey of Indian Sound Engineers..... read more


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Microphones



Microphones are one of the main gears of any event, whether it is performances, lectures, etc. For most of these events high-quality sound is required. PT brings to you a line-up of some popular microphones for Theatres and Auditoriums.


Earthworks FlexMic Series


The Earthworks FM Series models offer you a variety of choices with fully flexible goosenecks or goosenecks with rigid centers that have flex at both ends. All models have smaller diameter goosenecks and are available in either cardioid or hyper-cardioid polar patterns.

Earthworks FlexMics can be used in churches, theatres, boardrooms, and more.

Main Features include:

  • Uniform Frequency Response at 0º, 45º & 90º
  • On or Off Axis, Always Hear the Orator
  • More Gain Before Feedback
  • No Handling Noise
  • 139dB SPL Max Acoustic Input
  • 20kHz High Frequency Response
  • Incredible RFI Rejection
  • FM Series: Available with Fully Flexible Gooseneck in Short or Medium Lengths
  • FMR Series: Available with Rigid Gooseneck with flex at both ends, in Short, Medium or Long Length

Technical Specification: (FM 500)

  • Frequency Response: 50Hz to beyond 20kHz ± 2dB@ 30cm
  • Polar Pattern: Cardioid or Hyper-cardioid
  • Sensitivity: 10mV/Pa (-40dBV/Pa)
  • Power Requirements: 48V Phantom, 10mA
  • Max Acoustic Input: 145dB SPL
  • Connector: XLR-3 (pin 2+)
  • Min Output Load: 600 ohms between pins 2 & 3
  • Noise: 22dB SPL equivalent (A weighted)
  • Gooseneck: Fully flexible gooseneck
  • Dimensions: Base diameter is 22mm (.860”); Lengths 14.2in. (360mm) & 19.7in. (500mm)
  • Weight: 0.31b. (137g)

Sennheiser SKM 6000


The handheld transmitter SKM 6000 is intermodulation-free, which allows operation in an equidistant frequency grid. The transmission concept thereby permits maximum spectral efficiency even in the toughest frequency ranges. In short: more channels, maximum transmission performance at all times and hence outstanding signal stability.

Main Features include:

  • Three frequency variations (470-558 MHz, 550-638 MHz, 630-718 MHz)
  • Sennheiser standard capsule interface, compatible with microphone heads from Sennheiser and Neumann
  • Highly effective intermodulation protection
  • AES 256 encryption and Digital 9000 encryption
  • Compatible with EK 6042 and EM 9046 in Long Range mode
  • Li-ion battery packs with 5.5 hours run time
  • Magnesium housing

Technical Specification:

Frequency range

  • 470 to 718 MHz, subdivided into 3 ranges:
  • SKM 6000 A1 - A4: 470 - 558 MHz
  • SKM 6000 A5 - A8: 550 - 638 MHz
  • SKM 6000 B1 - B4: 630 - 718 MHz

Audio codec

  • SeDAC (Sennheiser Digital Audio Codec)
  • SePAC (Sennheiser Performance Audio Codec)

Frequency stability

  • < 5 ppm

Tunability

  • 25 kHz steps

Lower cut-off-frequency

  • Adjustable: 60 Hz, 80 Hz, 100 Hz, 120 Hz

Audio frequency response

  • 30 Hz - 20 kHz (3 dB)

Audio Gain

  • Can be set in 3 dB steps from 0 dB to +62 dB (for each capsule)

RF output power

  • 25 mW rms, 50 mW peak

Power consumption

  • Max. 960 mW

Weight

  • Approx. 350 g

Dimensions

  • 270 x 40 mm

DPA 2028 Vocal Mic


The 2028 Vocal Microphone is a professional stage mic with extraordinary natural sound, high separation from nearby sound sources and very high SPL handling.

The mic features exceptionally controlled directional quality. This, combined with superb definition and true dynamics, makes the 2028 the perfect match for all types of live performances.

Main Features include:

  • Renowned DPA sound
  • Natural vocals – from folk to metal
  • Reduces feedback issues
  • Rugged enough for the live stage
  • Uniform supercardioid directionality
  • Extreme SPL handling

Technical Specifications :

  • Directional Pattern: Supercardioid
  • Principle of Operation: Pressure Gradient
  • Cartridge Type: Pre-Polarized Condenser
  • Frequency Response: 20 Hz - 20 kHz
  • Effective Frequency Range ±2 dB, at 12 cm (4.7 in) : 100 Hz - 16 kHz. Permanent 3rd order low-cut filter at 80 Hz
  • Sensitivity, Nominal, ±3 dB at 1 kHz: 5 mV/Pa; -46 dB re. 1 V/Pa
  • Equivalent Noise Level, A-weighted: Typ. 22 dB(A) re. 20 µPa (max. 23 dB(A))
  • Distortion, THD < 1%: 136 dB SPL RMS, 139 dB SPL peak
  • Dynamic Range: Typ. 117 dB
  • Max. SPL, THD 10%: 160 dB SPL peak
  • Rated Output Impedance: 150 Ω
  • Minimum Load Impedance: 1 kΩ
  • Cable Drive Capability: 100 m (328 ft)
  • Output Balance Principle: Impedance balancing with Active Drive
  • Common Mode Rejection Ratio (CMRR) : > 50 dB at 1 kHz
  • Power Supply (for full performance) : P48 (Phantom Power)
  • Current Consumption: Max 2.5 mA
  • Connector: XLR-3M. Pin 1: shield, Pin 2: signal + phase, Pin 3: - phase
  • Color: Matte black
  • Weight: 286 g (10.1 oz)
  • Microphone Diameter: 48 mm (1.9 in)
  • Capsule Diameter: 19 mm (0.75 in)
  • Microphone Length: 188 mm (7.4 in)
  • Maximum Output Voltage, RMS: 9 Vrms; 19 dBV; 28 dBu
  • Polarity: +V at pin 2 for positive sound pressure
  • Temperature Range: -40°C to 45°C (-40°F to 113°F)
  • Relative Humidity (RH) : Up to 90 %

Harman AKG C636


The C636 features a proprietary double shock suspension system which provides unparalleled rejection of handling noise. Made with hand-selected components and manually tuned for a pure transparent tone, the new C636 retains the spirit of the classic AKG C535 condenser microphone, while being updated to meet the demands of today’s top vocal performers.

Main Features include:

  • Uniform cardioid polar pattern throughout the entire frequency spectrum
  • Custom-tuned cardioid condenser capsule
  • Protection system consists of the grille, a foam layer behind the grille and a magnetically attached computer-modeled mesh layer on top of the capsule
  • Rugged zinc alloy construction and a spring steel grille
  • 24-carat gold plated capsule to protect the microphone against moisture and corrosion
  • Proprietary double shock suspension system

Technical Specifications :

  • Type: 3/4” Back Electret Condenser
  • Polar Pattern: Cardioid
  • Sensitivity (Cardioid): 5.6 Mv/Pa (-45 Dbv)
  • Frequency Response: 20 Hz to 20 Khz (See Frequency Response Trace)
  • Electrical Impedance: ≤ 200 Ohms
  • Recommended Load Impedance: ≥ 2000 Ohms
  • Equivalent Noise Level to LEC 60268-4: 20 Db(A)
  • Signal to Noise: 74 Db(A) Re 1 Pa
  • Max. SPL for 1% THD: 150 Db
  • Temperature Range: -10 °C To +60 °C (14 °F - 140 °F)
  • Phantom Powering: 48 V ±4 V to IEC 61938
  • Current Consumption: ≤ 4 Ma
  • Connector: 3-Pin XLR (Pin 2 Hot)
  • Length: 185 Mm (7.29 In.)
  • Diameter: 51 Mm (2.01 In.)
  • Net Weight: 312 G (11 Oz.)
  • Bass Cut Pad: 80 Hz, 12 Db/Octave
  • Box Dimensions (L X W X H): 25.5 X 8 X 8 Cm (10 X 3.2 X 3.2 In.)

MX MDR Superlux TM-58S


TM58 series cardioid dynamic microphones are designed for speech and performance and deliver authentic sound without any unnecessary sound coloration. Equipped with tailored diaphragm and precise directivity, TM58 series give full and powerful sound. The high SPL and high-grade transient response of TM58 series compared with other microphones makes stage performances strong and penetrating.

Main Features include:

  • Balanced and clear true sound
  • Frequency response is good for intelligent recognition and the mid- high-frequency band is bright, the low frequency band is solid powerful
  • High SPL capacity
  • On/off switch with locking function
  • Newly-designed capsule shock mount

Technical Specifications:

  • Type: Dynamic
  • Polar Pattern: Cardioid
  • Frequency Response: 50-18k Hz
  • Sensitivity: -52± 2 dB
  • Impedance: 500 Ohms
  • Max. SPL: 155 dB

Shure SLX – D


From lecture halls to houses of worship to performance venues, SLX-D delivers transparent, 24-bit digital audio and rock-solid RF performance with easy setup and rechargeability options in a suite of versatile wireless system configurations.

Main Features include:

  • Extended 20 Hz to 20 kHz frequency range (microphone dependent)
  • 120 dB dynamic range
  • Digital predictive switching diversity
  • 44 MHz tuning bandwidth (region dependent)
  • 32 available channels per frequency band (region dependent)
  • Up to 10 compatible systems per 6MHz TV band; 12 systems per 8 MHz band
  • Easy pairing of transmitters and receivers over IR scan and sync
  • Up to 8 hours from 2 AA batteries or optional Shure SB903 rechargeable battery

Technical Specifications:

RF

  • RF Carrier Frequency Range: 470–937.5 MHz (Varies by Region).
  • Working Range: 100 m (328 ft) Note: Actual range depends on RF signal absorption, reflection and interference.
  • RF Tuning Step Size: JB Band: 125 kHz; All Other Bands: 25 kHz; Varies by region.
  • Image Rejection: >70 dB typical
  • RF Sensitivity: -97 dBm at 10-5 BER

AUDIO

  • Latency: 3.2 ms
  • Audio Frequency Response: 20 Hz–20 kHz (+1, -2 dB)
  • Audio Dynamic Range
  • A-weighted, typical: 120 dB @1% THD
  • Total Harmonic Distortion: <0.02%
  • System Audio Polarity: XLR: Positive pressure on microphone diaphragm produces positive voltage on pin 2 with respect to pin 3 of XLR output.

    TRS: Positive pressure on microphone diaphragm produces positive voltage on the tip of the 6.35 mm (1/4-inch) with respect to the ring of the 6.35 mm output.

  • Mic Offset Range: 0 to 21 dB (in 3 dB steps)

TEMPERATURE RANGE

  • Operating Temperature Range: 0 °F to 122 °F (-18 °C to 50 °C)
  • Storage Temperature Range: -20°F to 165°F (-29°C to 74°C)

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