7
Changing/Overwriting Existing Favorite
1.
Select the “Favorites/Presets” menu item on the TX915.
2.
Position the highlight bar on the favorite that you wish to change.
3.
Push and hold the “Select” button for about 3-4 seconds. The remainder of the process is exactly
the same as setting up a new favorite where you select the desired sound and volume level.
Using a Favorite
Make sure that both the HammerJack and TX915 transmitter are powered on, and push the corresponding
preset button (P1 or P2) on the transmitter keypad. The HammerJack will then instantly switch to that
sound and volume level. To initiate playback of any other preset: Select the “Favorites/Presets” menu on
the main screen, browse through the available presets, and then use the “Select” button, just as if you were
picking a sound for normal playback. The “User” button can be configured to initiate playback of presets 3,
4, and 5; see section 8-3 for more information about the “User” button.
3.
About the HammerJack Speakers
The HammerJack incorporates two different types of loudspeakers. The front speaker is a high efficiency
horn with maximum sensitivity in the frequency range necessary to reproduce small animal distress
sounds. Distress sounds of rabbits, small rodents, birds, canines, and many others are best reproduced by
using the front horn only with the rear cone speaker turned off. This will also ensure maximum battery life
as playing both speakers requires almost twice as much battery power. The rear cone speaker is best
suited for sounds that have significantly lower frequency content. These sounds would include bear
growls, mountain lion roars, certain owl hoots, and some other large mammal sounds. The rear speaker,
however, is not as efficient as the front horn. Because of this, it will not play as loud as the horn.
Understand that not all calling sounds will benefit greatly from playing both speakers at once. If you elect
to do this, remember that battery life will be reduced.
4.
Using External Speakers
The HammerJack is equipped with two External Speaker Jacks which allows you to connect up 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
HammerJack, the volume level can be increased significantly.
Connecting an External Speaker
The external speaker jacks on your HammerJack accept standard 3.5mm plugs. When choosing an external
speaker, it is recommended to use one with an impedance rating of 8-ohms. To connect an external
speaker, plug the connector of the external speaker into one of the external speaker jacks. You will notice
that each external speaker jack corresponds to one of the internal speakers. For example, the internal front
speaker and front external speaker are linked together. If you wish to have ONLY the external speaker(s)
produce sound, you must disable the internal speakers as the internal speakers are not disabled
automatically.
Disabling/Enabling the Internal Speaker
Move the speaker slide switch to the “OFF” position for the desired speaker you wish to disable (front or
back). To re-enable the speaker later, simply place the slide switch back to the “ON” position. By disabling
the internal speaker(s) when using an external speaker(s), battery life will be extended longer than having
all of the speakers operating at once.
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