Hello, mstorm
I have recieve complite information from Cisco.
CTS-MIC-OMNIDIR= Omni Directional Microphone, includes 7.5 M cable This is an Audio Technica AT841UG. Specifications are identical to U841A, attached.
CTS-MIC-DIR= Directional Microphone, includes 7.5 M cable This is an Audio Technica AT871UG. Specifications are identical to AT871R, attached.
If you need datesheets, you can contact me and I will send it to you.
Additional informaton about
CTS-MIC-CLNG= Ceiling Mic Audio Science MIC-CLNG= Instructor ceiling mounted mic These are both AudioScience mics.
MIC-LP= Low Profile Microphone
MIC-UNIDIR= Uni-Directional Boundary Microphone W/ 7.5 M Cable
SENSITIVITY: Nominal -10dBV/Pa +/- 1.5 dB at 0 degrees. The sensitivity change
from 3-feet to 6-feet below 1 kHz should be 6 dB or less, and the sensitivity
difference above 4 kHz shall be 4.5dB or less..
OUTPUT IMPEDANCE: 1.5Kohm or lower.
MAXIMUM CURRENT: 5 mA
NOMINAL SUPPLY VOLTAGE: 12V
PREAMP TYPE: Dual Op-Amp
S/N RATIO: 60 dB or better, Re 1Pa, A-weighted.
DIRECTIONAL PATTERN: Unidirectional (Cardioid), -3dB at +/- 60-degrees from
200 Hz to 6 kHz. -10dB at 90 degrees. Uni response -20dB or greater at 180-degrees
up to 4 kHz. Note that higher frequencies may be more directional.
FREQUENCY RESPONSE: +,- 2dB of provided reference microphone
DISTORTION: <3% THD @ 1000Hz for 94dB SPL < 0.5% THD @ 1000 Hz for 80
dB SPL
NOISE FLOOR: 35 dB SPL, A-weighted equivalent at electrical interface with a
design target of 25 dB SPL.
MAX INPUT SPL: 110 dB SPL (Max. 5% THD @ 1000 Hz)
