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| FEATURE OR CAPABILITY |
LD-12 |
LD-15 |
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| 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 |
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