BL CCM 3

Boundary-Layer Microphone for fixed Installations

Features

  • hemispherical pickup pattern
  • for building in to the surface of a table or lectern
  • unobtrusive
  • avoids comb filter effect

Order number

  • No. 121501

Description

This special version of the CCM 2XS L compact microphone is equipped with a flange enabling it to be built into the surface of a table or speaker's rostrum. This makes the microphone nearly invisible, and at the same time improves the sound quality by eliminating comb filter effects.

Practice

The BL CCM 3 is often used as a redundancy microphone in speaker tables.

Technical Specifications

Frequency range

see corresponding capsule

Sensitivity

see corresponding capsule

Maximum sound pressure level (THD < 0.5 %)

138 dB-SPL (P48)
130 dB-SPL (P12)

Maximum output voltage

2,6 V (8,3 dbV) with 2 kΩ load

Low cut filter

20 Hz, 12 dB/Okt.

Output impedance

90 Ω @ 1 kHz

Maximum cable length

> 400 m

SCHOEPS RFI Shield

No

Powering standard / Valid range

P48 / > 40 V
P12 / > 10 V

Current consumption

4 mA (P48)
3,6 mA (P12)

Common mode rejection ratio (at 1 kHz)

> 55 dB

Minimum recommended load impedance

2 kΩ

Output

Lemo (CCM-L) or XLR-3M (CCM-K),
analog, 1 channel

Length

46 mm (CCM-L)

Diameter

20 mm

Weight

33 g (CCM-L)

Surface finish

matte gray

Product History

  • 1994: Launch of the CCM, hybrid technology circuit. The capsule part is identical to the MK capsules from the beginning  
  • 2016: better RF filter to protect from interferences
  • 2017: Polarization voltage generator now with higher frequency above 200 kHz due to downpitching in sound design applications.

Downloads

BL CCM 3 - dimensional drawing

User guides, manuals

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Included accessories