Ampetronic microphones are designed to combine with Ampetronic induction-loop amplifiers to give convenient amplified speech transmission. Miniature tie-clip, desktop and boundary types are offered.
They are compatible with Ampetronic CLD1, CLD1AC, ILD100-TX, and ILD100DC.
Ampetronic recommend connecting the microphones to inputs intended for unbalanced, electret microphones with DC bias power as they should not be connected directly to balanced or line level inputs. The microphones can be used with a balanced, 3-pin XLR input by using an optional Ampetronic MAT1 adapter to convert the unbalanced 3.5mm jack termination to balanced 3-pin XLR.
EM1.2 - Miniature
This tie-clip style electret microphone has an omni-directional pickup pattern. It may be fixed to a 'transparent security screen' or used with the (detachable) tie-clip However, either the EM195A with cardioid pickup pattern or the Q400 with hypercardioid pickup would be a better option for use on a security screen if background noise becomes an issue. Fixed cable length of 3m, black. Includes windshield and tie-clip attachment.
Sensitivity: -62dB +/-3dB, (0dB=1V/bar). Impedance: 2.2k ohms. Frequency response: 20Hz to 16kHz. Power requirements: DC 1.5V. Dimensions: 10x18mm, excluding cable. Weight: 50g, including cable.
ACBMIC - Boundary
ACBMIC electret boundary microphone has a half-cardioid pickup pattern and is more suited to wall or desk surface fixing where the source audio is in close range. A fixed, 2m cable is terminated with 3.5mm jack plug for connection to selected Ampetronic amplifiers. Ampetronic advise that the surface to which the microphone is attached does not suffer from 'strong vibration' to reduce the risk of unwanted noise pickup. The microphone is attached to the surface via an included adhesive pad and microphone clip.
Sensitivity: -65dB. Impedance: 1k ohms. Frequency response: 20Hz to 16kHz. Operating voltage: 6V DC. Dimensions: 39 x 42 x 17mm. Weight: 45g, including cable.
This directional, cardioid, desktop microphone is designed be placed where the microphone points towards the required sound source such as a receptionist. The semi-rigid gooseneck allows for better positioning. Supplied with weighted desktop base for free-standing use. It has a fixed 2.4m cable terminating with 3.5mm jack plug.
Sensitivity: -65dB. Impedance: 680 ohms. Frequency response: 30Hz to 16kHz. Operating voltage: 1.5V to 9V DC. Gooseneck length: 355mm. Weight: 420g, including cable.