Lectrosonics Long Ranger 4, Инструкция по эксплуатации

Страница: 5 / 20

Portable Wireless Sound System
Rio Rancho, NM 5
OFF
RF
12V DC
OUTPUT
CHARGE UNTIL
LAMP GOES OUT
POWER
AUX IN/OUT
MIC LINE
WIRELESS
MICROPHONE
VOLUME
AUXILIARY
INPUT
VOLUME
MOD
LEVEL
L o n g
R a n g e r
DCR15/2AU
CHARGER
USE
ONLY
FAST CHARGE
CIRCUITRY
12V DC
EXT POWER
EXTERNAL
8 OHM SPEAKERS
MAIN HORN
OPERATES w/ DISCONNECTS
MAIN HORN
L o n g
R a n g e r
FAST
CHARGE
LECTROSONICS
PROFESSIONAL WIRELESS
Figure 1 - Long Ranger 4 Control Panel
Figure 2 - Long Ranger 4 Front Panel
12V DC Ext Power
A special jack used to connect an external 12 Volt DC
source to the unit to substitute for the “on-board” battery
pack. It is most commonly used for connecting the
Long Ranger to a vehicle cigarette lighter or 12V DC
auxiliary receptacle. When an external power source is
connected to this jack, the on-board battery pack is
automatically disconnected.
CAUTION: Make sure you comply with the
polarity markings on the jack. The correct plug
for making the co nnection is a Radio Shack
274-1567 size K coaxial DC power plug. Radio
Shack also stocks cigarette lighter plugs (with
built-in fuse) and cords to construct a suitable
assembly
External 8 Ohm Speakers
Two jacks which are used to connect external 8 ohm
loudspeakers such as the Lectrosonics H300 re-entrant
horn. This jack can also be used to power other brands
of loudspeakers, but be sure that the speaker has a
rated impedance of 8 ohms. The left-hand jack discon-
nects the built-in horn when the plug is inserted. The
right-hand jack will operate the internal horn along with
the external speaker. The efficiency of different makes
and models of speakers varies significantly. Even
though two different speakers are both rated at 8 ohms,
their loudness could be quite a bit different. The other
specification to compare when considering the use of
another speaker is the efficiency rating. The horn built
into the Long Ranger is rated at 107 dB SPL (sound
pressure level) at one meter with a one watt input.
Check this specification on the speaker you are consid-
ering. A speaker with a lower “dB’ number will not be as
loud as the horn built into the Long Ranger.
Front Panel