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Using an APS VR module and VHF Transmitter(s)...
The APS VR receiver module comes pre-adjusted to one of 30 dif-
ferent VHF frequencies between 169MHz and 213MHz. The particular
frequency(s) you have were chosen to not interact/interfere with TV sta-
tions in your area. After installing the module (page 2) you will have to
attach the antenna and position it as close to vertical as possible. The
volume control on the module adjusts the input volume of that particular
module. Try to keep it set near its mid point for best performance.
Transmitters...
Model 31LT: Lavalier microphone with body-pack transmitter. Ideal for speaking
applications such as Lecturers, Actors, Actresses, etc.
(1) Open the battery compartment lid by sliding it down and raising it.
(2) Insert one fresh Alkaline 9-volt battery into the compartment. Make sure the
battery polarity is correct.
(3) Frequency Label
The Frequency label indicates what frequency (in MHz) the transmitter broad
casts on. The AZDEN receiver in use must also be on the same frequency.
(4) 31LT lavalier mic:
Clips onto a tie, lapel, etc. The transmitter’s cable doubles as an antenna.
Extend the cable as much as possible for the best performance.
(5) Audio Input Level Control
Turn clockwise to increase, or counter-clockwise to decrease the input level.
A small screwdriver is supplied to make adjustments. The level control is
factory-preset in the center position.
7. LINE IN - this mono RCA jack is designed to accept audio from
devices such as CD players, video tape players or anything else with
a line-level audio output. The input volume is controlled by the LINE
LEVEL knob (6).
8. LINE OUT - this mono RCA jack provides line-level audio to drive
additional speakers or other audio devices with a line-level input.
The level is controlled by the MASTER VOLUME CONTROL (A) on
the front panel. If this output is used to drive the LINE IN (7) of a
second APS 25b, the MASTER VOLUME CONTROL (A) will con-
trol the overall volume of both speakers.
9. DC JACK - this is where the removable DC plug is attached to the
speaker. With the Charge Pack plugged into the speaker and a
110VAC wall plug, the speaker can be recharged. The speaker can
be used while charging. Be sure to use ONLY the Charge Pack that
is supplied with the speaker.
10. CHARGE LED - Indicates that the speaker is charging.
11. LOW LED - Indicates that the battery is low and needs recharging.
13. FULL LED - Indicates that the battery has been fully charged.
Mounting the APS 25b
• Wall Mounting (see photo - inside cover)
The APS 25b is supplied with a wall mounting bracket. It can be at-
tached to the speaker via the built-in 1/4"X 20 threaded holes on the top
and bottom of the speaker using the included large screws. Supplied rub-
ber pads can be applied to the inside surface of the bracket to protect the
speaker surface from scratching and reduce the possibility of the speaker
rotating in the bracket. The bracket can be attached to the desired sur-
face using a number of different fasteners. Be sure to use fasteners that
are appropriate for the surface you are mounting to and that can support
the speaker’s weight. Once the desired position is achieved, tighten the
screws securely.
• Stand Mounting
The APS 25b has two industry-standard 5/8" x 27 threaded inserts
moulded into the cabinet - one on the bottom and one on the side. These
allow the speaker to be securely mounted to a stand (such as a micro-
phone stand). Be sure to tighten the speaker securely to the stand. Also,
be sure that the stand can support the weight of the speaker and that it
will be stable with that weight attached.
• Flat surface
Four self-adhesive anti-skid pads can be applied to the bottom or side
of the speaker to help stop it from moving when placed on a flat surface.
