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 two standard 9V batteries 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
|
| BATTERIES DURATION |
>12h (alkaline cells)
|
| SIZE |
12.5x19x5cm
|
| WEIGHT |
900g
|
