• Microphone Preamplifiers

    Microphone preamplifier PRE-01

    PRE-01

    Download the Pre-01MK2 Manual 

    PRODUCT DESCRIPTION

    The optional, battery-operated, PRE-01MK2 microphone preamplifier satisfies the needs of laboratory measurements, performs A-weight filtering and drives long cables to the PC.

    The microphone preamplifier PRE-01 has been designed to match Audiomatica’s microphones MIC-01, MIC-02 and
    MIC-03. It is particularly useful when the microphone has to be operated far from the analyzer or when weighted measurements are needed. PRE-01 powers the microphone connected to its input with an 8.2V phantom supply
    and adds a selectable weighting filter (A or B or C); also available there is a 20 dB gain stage.

    The unit is operated with a single standard 9V battery or with an external DC power supply.

    TECHNICAL SPECIFICATIONS

    FREQUENCY RESPONSE
    7Hz÷110kHz (-3dB)
    WEIGHTING FILTERS
    A, B, C (IEC 651 - TYPE I)
    PHANTOM POWER SUPPLY
    8.2V (5600 Ohm)
    GAIN
    0 & 20dB (INTERNAL SETTINGS)
    INPUT IMPEDANCE
    5600 Ohm
    OUTPUT IMPEDANCE
    100 Ohm
    MAXIMUM OUTPUT VOLTAGE (@1kHz):
    25 Vpp
    THD (@1kHz)
    0.01%
    INPUT NOISE (@20dB gain)
    7uV LIN, 5.3uV A
    DRIVE CAPABILITY
    ±7mA
    BATTERY DURATION
    >12h (alkaline cell)
    SIZE
    12.5x19x5cm
    WEIGHT
    900g

    MICROPHONE preamplifier PRE-33 & PRE-33A

    PRE33A

    Download the PRE-33A Manual 

    PRODUCT DESCRIPTION

    The supply, filter & gain unit PRE-33A has been designed to match Aco Pacific’s microphone capsule 7012 (and relative preamplifier 4012) and is needed to operate it. The PRE-33A powers the microphone connected to its input with a 200V phantom supply and adds a selectable weighting filter (A or B or C); also available there is a configurable attenuation/gain stage (-20dB/0dB/+20dB). The unit is operated with one standard 9V battery or with an external DC power supply.

    TECHNICAL SPECIFICATION

    FREQUENCY RESPONSE
    7Hz÷110kHz (-3dB)
    WEIGHTING FILTERS
    A, B, C (IEC 651 - TYPE I)
    PHANTOM POWER SUPPLY
    200,28,0V
    PREAMPLIFIER POWER SUPPLY
    50V
    ATTENUATION/GAIN
    -20,0,+20dB
    INPUT IMPEDANCE
    100 KOhm
    OUTPUT IMPEDANCE
    100 Ohm
    MAXIMUM OUTPUT VOLTAGE
    (@1kHz): 25 Vpp
    THD (@1kHz)
    0.01%
    INPUT NOISE (@20dB gain)
    5uV(LIN), 3uV(A)
    DRIVE CAPABILITY
    ±7mA
    BATTERIES DURATION
    3h (alkaline cells)
    SIZE
    12.5x19x5cm
    WEIGHT
    900g