| |
 |
 |
| FEATURE
OR CAPABILITY |
LD-12 |
LD-15 |
 |
| Amplifier Signal-to-Noise |
35 dB |
40 dB |
|
| Amplifier S/N Ratio Compared to S-30 |
3X Better |
5.5X Better |
|
| Amplifier
Gain |
59 dB |
56 dB |
|
| Amplifier
Gain Compared to S-30 |
3X Better |
2X Better |
|
| Amplifier
Total Distortion |
3% or Less |
Less Than
1% |
|
| Amplifier
Distortion Compared to S-30 |
2 Times
Less |
6 Times Less |
|
| Amplifier
Filter Ranges |
3 Low and
3 High |
1 High, 1
Low, Notch |
|
| Amplifier
Widest Filter Settings |
100 Hz to
1200 Hz |
30 Hz to
5000 Hz |
|
| Amplifier
Battery Life (alkaline cells) |
28 Hours |
80 Hours |
|
| Amplifier
Battery Type & No. |
6 AA Batteries |
4 C Batteries |
|
| Sensor Sensitivity |
.7 V/g at
400 Hz |
10 V/g at
1100 Hz |
|
| Frequency
at Peak Sensor Sensitivity |
650 Hz |
1100 Hz |
|
| Model of
Stereo Headphones |
David Clark
100/dC |
David Clark
100/dC |
|
| Mute Switch
Location |
Handswitch
with Mute Button |
Mute Button
on Amplifier |
|
| Optimized
for Application for: |
Ground “Miking” on
Streets And Concrete Slabs |
“Surveying” at
Hydrants, Valves, and Meters |
 |
|
|
