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one of our large external speakers, such as the SP108Z, if you really
need to, say, call crows from the next county. Not only are these
speakers more efficient, but they will also have no problem dealing with
the extra power.
NOTE: If you must use extreme volume without the external speaker,
use only the front horn. The rear cone speaker is somewhat more
delicate than the front horn. Please be careful with the volume
control, and remember these cautions when using an external
battery:
• NEVER connect an external battery to the charge jack.
• NEVER connect a battery or power supply capable of delivering
more than 15 volts to the charge jack.
• NEVER charge the external battery while it is connected to the
Firestorm.
• ALWAYS use a 5-amp (max) fuse in the positive battery lead.
• ALWAYS act responsibly with the volume control to prevent
speaker damage.
• For the maximum possible loudness, use one of our optional
external speakers, such as the SP108Z.
6. Using External Speakers
The Firestorm is equipped with two External Speaker Jacks which allows
you to connect to two additional speakers. The internal speakers
perform admirably; however, you may encounter situations that
require higher volume levels. By connecting a larger and more efficient
external speaker(s) to the Firestorm, the volume level can be increased
significantly.