RTI Tech
MODEL 2145 PERFORMANCE SPECIFICATIONNew subminiature condenser microphone for professional applications.
The extended frequency response and low frequency attenuation are especially suitable for
use with modern hearing aids. Effective damping of the resonance reduces the possibility
of feedback. Transducers represent the state of the art in resistance to shock and
vibration and in acoustic performance. A novel electret element and integral preamplifier
are included.
Supply voltage |
1.3 V (0.9-20 V) |
| Current drain at 1.3 V |
25µA (10–50 µA) |
| Output impedance at 1.3 V |
3 kOhm (2–6 kOhm) |
Noise level («A» -weighted)
(l kHz equivalent SPL) |
26 dB (28 dB Max) |
Sensitivity to vibration
(1 kHz equivalent SPL) |
< 66 dB per g |
| Sensitivity
(dBV) |
| Frequency |
min |
nom |
max |
|
| 100 Hz |
|
-66 |
|
| 1000 Hz |
-62 |
- 59 |
-56 |
| » 5000 Hz |
|
- 57 |
|
|
Device conformity range of deviation from 1 kHz |
|
| 100 Hz |
-11 dB |
to |
-4 dB |
| 3500 Hz |
0 dB |
|
0 dB |
| » 5000 Hz |
+0 dB |
to |
+5 dB |
|
| Patents pending |
|
 |
DIMENSIONS
IN MM (INCHES) |
|
