Easily installed in practically any 12V battery equipped vehicle, these compact, rugged amplifiers provide the basics for mobile announcements.
There are two microphone inputs and a convenient auxiliary input, perhaps to play pre-recorded announcements using a portable replay device. A unidirectional dynamic microphone with talk switch is included.
Technical Specifications:
| Microphone inputs: |
Two, 4mV, low impedance, unbalanced 6.35mm jack |
| Auxiliary input: |
500mV, 10k ohms, unbalanced 6.35mm jack |
| Frequency response: |
100 - 10000Hz |
| Distortion: |
Less than 5 percent, 1kHz, rated output |
| Output impedance: |
4/8 ohms, changed by choice of cable connection |
| Power source: |
Standard ‘12’ volt battery (10-16V usable) |
Note (1): Maximum, at rated power; (2): (w x h x d) mm
Included accessories: Microphone, microphone holder, U-shaped bracket, mounting screws, fuse and connection cable.
Application Note:
Since the terminal voltage of a vehicle battery fluctuate considerably, depending on the charging system, the amplifiers can provide outputs much greater than the rated output. It is recommended that the speakers are selected to take this into account. The examples below include this safety factor.
Note (1): Single speaker. (2): Two speakers in parallel. (3): Four speakers in serial/parallel.