Radio Shack Speaker 920SR User Guide

216MHz  
use r guide  
920SR speaker  
921T body-worn transmitter  
922T handheld transmitter  
923C charging stand  
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introduction  
Congratulations on the purchase of your new Radium sound field system! With proper care  
and use it will become one of your most valuable classroom educational tools. Students will  
be able to consistently and easily understand the teacher, regardless of their location in the  
classroom, or competing internal or external background noise. Teachers can now speak all  
day in their normal voice without having to raise their voice to get their students’ attention.  
Numerous studies show that classrooms using sound field enjoy better student comprehen-  
sion, increased student participation, better grades and fewer behavioral referrals.  
Read this manual carefully to become familiar with your system and to get the most out of  
its many features and options.  
1
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understanding sound field and its benefits  
without sound field  
?
?
• distance  
• noise  
• echo  
with sound field  
• distance  
• noise  
• echo  
2
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setup tips  
IMPORTANT!  
Be sure you place your Radium speaker and transmitter units on their charger overnight –  
for a minimum of 12 hours – before turning the power on and/ or using them for the first  
time. Failing to do so can reduce battery capacity.  
Basic setup tips  
First Identify a front corner of the room – the location from where the teacher  
normally teaches.  
diagram 1  
Second Take a good look around, paying close  
attention to power outlet and other electronic  
equipment locations. Ideally, the speaker should  
be placed at a 5-foot distance from other elec-  
tronic equipment, such as computers or radios.  
Third – Determine whether to mount the  
speaker on the wall as shown in diagram 1, or  
place it on a sturdy surface using the T-bar table  
3
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setup tips (contd)  
diagram 2  
mount stand in diagram 2. In either case,  
the speaker should be placed at a height of  
3 feet/ 1 meter from the floor, or at level  
closest to the listeners ears.  
Fourth – Consider whether other Radium,  
EasyListener 2, or other radio-based active  
learning systems are in use in the building,  
and set transmitter and receiver channels  
accordingly. Every transmitter in a building  
should be on its own channel. See  
diagrams in section 12 for guidance.  
If placing the speaker on a table or surface top, consider the following:  
Choose a loca tion tha t provides ea sy a ccess for the tea cher, a nd is out of  
the wa y of students a nd ma in tra ffic a rea s. The speaker should be placed at  
least 6 feet/ 1.8 meters away from where the teacher stands.  
4
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setup tips (contd)  
Choose a table or surface top that is sturdy.  
Make sure the table or cabinet is structurally solid, sturdy and out of the way of foot traffic.  
Properly mount a nd securely fa sten the T-ba r spea ker sta nd onto the bottom  
of the spea ker. Make sure the stand is screwed on tightly, and that the speaker does  
not wobble when in an upright position.  
If mounting on the wall, consider the following:  
The power supply cord needs to rea ch the wa ll outlet. Make sure the power  
supply is within reach of the speaker from its wall-mounted position.  
The teacher should be able to reach the controls located on top of the speaker  
once its mounted. Once the volume is set at a comfortable level, the speaker power  
switch located on the lower right side of the speaker can be easily accessed by the  
teacher. Follow the instructions on page 28 for setting the volume at the proper level.  
Never mount the speaker upside down, or horizontally. The speaker unit must be  
mounted such that the controls are located at the top of the unit.  
5
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daily operating tips  
In the morning –  
Turn tra nsmitter power on’ a nd put microphone on.  
Turn spea ker column power on. The speaker should remain plugged into a wall  
power outlet during the day – with the power in the on’ position. Turn power switch  
to the off’ position at night after each use. The internal battery is not being used while  
the speaker is plugged into a wall outlet.  
To opera te using the interna l ba ttery a s a porta ble system, simply unplug the  
speaker before use and plug back in after use – making sure you return power switch  
to off’ position while plugged-in and charging. The battery takes 6 hours to reach a full  
charge; at full charge, the speaker column battery will last up to 8 hours unplugged.  
In the evening after each use –  
Turn tra nsmitter power off, and place it back onto the charging stand; confirm  
that the charge’ indicator light illuminates. Transmitters not in use should always be  
placed on the charging stand – this is their home base station.  
Turn spea ker column power off. Leave speaker plugged into wall power outlet,  
but confirm that the power has been turned off.’  
6
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daily operating tips (contd)  
Battery care and maintenance tips –  
The speaker battery will last approximately 2 years depending on usage.  
When not in use, leave speaker plugged into wall outlet with power switch in  
off’ position.  
Keep speaker away from heating units – use/ store in a cool dry place.  
When using speaker battery power (unplugged from wall), always remember to return  
power switch to off’ position after use.  
• Never mount/ use speaker horizontally or upside down. Controls should be accessible  
from top of unit.  
• Plan on buying new NiMH batteries for your transmitter every 12 months. Alkaline  
batteries can also be used as back-ups, however, the 923C charger will not recharge  
alkaline batteries. Never attempt to recharge alkaline batteries – this will cause damage  
to the unit and void the product warranty.  
Remember to charge all batteries overnight before initial use.  
7
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daily operating tips (contd)  
Do not coil the microphone – since it also acts as your antenna, coiling or wrapping the  
cord will affect its range and may also reduce its life.  
Speak at a normal level – the system is projecting your voice for you.  
8
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parts and accessories included with system  
3
1
4
2
and/  
or  
8
6
7
5
or  
9
10  
13  
12  
11  
9
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1
column speaker receiver  
(920SR)  
8
9
speaker table stand  
(AT0823)  
or  
wall mounting bracket (set of 2)  
(AT0820)  
2
body-worn transmitter  
(921T)  
and/ or  
handheld transmitter  
(922T)  
elastic belt  
(AT0712)  
3
4
5
6
plug-in mic for body-worn transmitter  
(AT0655 shown)  
10 AA rechargeable NiMH batteries  
(AT0807)  
charging stand  
(923C)  
11 channel changer screwdriver  
(330-3000-101)  
power supply, receiver  
(040-7402-106)  
12 auxiliary input/ output cable  
(AT0532-05)  
power supply, charging stand  
(AT0819)  
13 auxiliary input cable (3.5mm – dual RCA)  
(300-6332-107)  
7
receiver antenna  
(AT0831)  
10  
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920SR column speaker features (top)  
8
9
10  
11  
12  
1
5
2
4
6
7
3
11  
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1
power, low battery, and  
reception status indicator  
for channel A  
7
aux output level switch  
See page 42 for level setting chart  
8
9
antenna  
2
3
4
power switch and volume  
control for channel A  
wall mount hole  
reception status indicator for  
channel B  
10 extra antenna hole (not used)  
11 aux input jack (3.5mm, mono)  
12 aux output jack (3.5mm, mono)  
power switch and volume  
control for channel B  
5
6
tone control  
aux input volume control  
12  
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920SR column speaker features (front and back)  
20  
13  
16  
14  
15  
18  
19  
17  
13  
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13 speaker grille  
19 power jack  
14 two built-in speakers  
20 channel selectors  
15 internal rechargeable battery  
(non-user removable)  
16 handle  
17 main power on/ off switch  
18 power and charging indicator  
14  
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921T body-worn transmitter features  
front  
back  
3
1
4
2
15  
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921T body-worn transmitter features (contd)  
1
belt clip  
top  
2
3
4
5
6
battery compartment  
volume control  
5
6
channel selector  
microphone input (2.5mm)  
3 position power switch  
7
standby  
(mute)  
on  
off  
7
power and low battery indicator light  
16  
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922T handheld microphone features  
1
2
LED indicator light  
3 position power switch  
1
on  
standby  
(mute)  
off  
2
3
3
channel selector  
4
5
battery compartment  
channel selector key  
4
(inside battery compartment)  
5
17  
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923C charging stand features  
front  
1
2
3
power indicator  
pocket 1 charging indicator  
pocket 1 full charge indicator  
4
5
6
7
pocket 2 charging indicator  
pocket 2 full charge indicator  
power switch  
1
3
4
5
2
back  
DC power socket  
6
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7
18  
system setup and operation  
attach antenna  
1
Attach antenna to top of speaker  
1
2
Turn metal base of antenna clock-  
wise until secured tightly (do not  
over-tighten)  
2
1
19  
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turn on main power  
2
if using wall outlet  
Plug power supply into  
power/charging socket  
1
2
Plug power supply into  
wall socket  
2
3
Turn speaker on  
1
if using already charged battery  
Turn speaker on  
3
3
NOTE: Light is not illuminated  
during normal battery operation  
NOTE: Battery operating time is 5-8 hours.  
20  
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charge battery  
3
charge nightly after every use  
Plug power supply into  
power/charging socket  
1
2
Plug power supply into wall socket  
2
Recharging time is 8 hours if the battery is  
completely discharged and 4 to 7 hours if  
battery is only partially discharged.  
1
Red light =charging  
Flashing red/green (equal duration) = 80-90% charged  
Long flash green, short flash red = fully charged  
NOTE: Light is not illuminated during normal battery operation  
NOTE: Battery operating time is 5-8 hours.  
21  
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insert batteries in body-worn transmitter  
4
Switch power off  
1
2
1
Remove battery cover  
(push and slide off)  
Insert two AA rechargeable  
NiMH batteries  
3
3
_
+
_
WARNING: Never recharge alkaline  
batteries! This will cause damage to the  
unit and will void the product warranty.  
+
2
22  
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insert batteries in handheld microphone  
5
Switch power off  
1
2
AA Rechargeable  
NiMH batteries  
Remove battery cover  
(turn counter-clockwise)  
1
Insert two AA rechargeable  
NiMH batteries  
3
3
WARNING: Never recharge alkaline  
batteries! This will cause damage to the  
unit and will void the product warranty.  
2
23  
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charge transmitter(s)  
Never attempt to recharge alkaline batteries! This will cause damage to  
the unit and will void the product warranty.  
6
Plug power supply into power jack  
on back of charger stand  
charger back  
1
2
2
3
Plug power supply (AT0819) into  
wall socket  
1
Turn charger on  
3
4
5
charger front  
Turn transmitters off while charging  
4
4
When green charge ready indicator  
lights, the transmitter batteries are  
full charged and ready to go. (4 to 5  
hours)  
5
24  
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wait until green charge indicators light (4-5 hours)  
7
PWR:  
1
Red light = charger is turned on  
CHARGING:  
Amber light = units are being charged  
2
3
4
READY:  
Green light = units are fully charged  
ERROR:  
Blinking Amber light = charging  
error. Improper batteries have been  
detected. Check your batteries and  
replace as required. Only NiMH AA  
batteries can be charged. Unit will  
not charge disposable Alkaline bat-  
teries or NiCad batteries.  
1
2
4
3
25  
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select channel  
8
Use a screwdriver to adjust the  
Channel A selector on the back of  
the speaker to match the channel  
number of either the 921T and/or  
the 922T transmitter(s).  
1
921T  
1
NOTE: Consider whether other Radium,  
EasyListener 2, or other radio-based  
active learning systems are in use in  
the building, and set transmitter and  
receiver channels accordingly. Every  
transmitter in a building should be on  
its own channel. See diagrams in section  
12 for guidance.  
922T  
26  
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activate receivers  
9
Turn receiver on by turning Channel A  
and/or Channel B volume control  
knob(s) to the right  
1
2
Check power indicator light  
(remember that main power must  
also be on – see 2 ):  
Flash red once = adequate power  
Continuous red =low battery  
No light = battery does not have  
power and requires recharging or  
power supply is not connected properly  
3
1
2
Turn on a 921T or 922T transmitter  
and check FM indicator light(s):  
3
Green = receiving FM signal  
27  
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setting FM volume  
10  
Follow steps  
or 2 below to adjust FM  
1
volume setting to proper level. Two people are  
needed to set the volume level. It is difficult to  
hear your own voice and make adjustments to it.  
NOTE: The average volume setting is in the  
11:00 position (see photo), but may change  
depending on room acoustics and noise level.  
With a sound level meter - Take a level reading in the A” setting in the center of the  
room during normal classroom activity, and another reading of the teacher's amplified voice  
(without the class activity). The level of the teacher's voice should be set between 10-15  
decibels above room noise level.  
1
2
Without a sound level meter - First, ask someone other than yourself (if you are the  
teacher) to listen to the amplified voice and make volume adjustments. An ideal volume level  
is achieved when the listener can hear the amplified voice at a comfortable level and the vol-  
ume level from the speaker and teachers mouth is comparable. If you can hear yourself  
through the loudspeakers, the volume setting may be too high and should be decreased. 28  
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920SR speaker placement and mounting  
speaker positioning  
11  
Place speaker in a corner of the room facing  
listeners. Mount speaker on wall using brack-  
ets or place speaker on a surface using a  
speaker stand. The bottom of the speaker  
should be about 1 meter/3 feet from the floor.  
(See setup tips on page 3).  
1m/3ft  
29  
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channel mapping: placement diagram for multiple  
system installations (double channel - 8 rooms total)  
12 a  
= suggested placement of  
920SR speaker  
Channel A: 44  
Channel A: 41  
Channel A: 46  
Channel A: 42  
Channel B: 54  
Channel B: 51  
Channel B: 56  
Channel B: 52  
hallway  
Channel A: 48  
Channel A: 45  
Channel A: 47  
Channel A: 43  
Channel B: 58  
Channel B: 55  
Channel B: 57  
Channel B: 53  
30  
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channel mapping: placement diagram for multiple  
system installations (single channel - 16 rooms total)  
12 b  
Channel: 41  
Channel: 44  
Channel: 48  
Channel: 54  
Channel: 58  
Channel: 42  
Channel: 46  
Channel: 52  
Channel: 56  
Channel: 43  
Channel: 47  
Channel: 53  
Channel: 57  
Channel: 45  
Channel: 51  
Channel: 55  
31  
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wall mounting (option 1)  
13 a  
Attach brackets to wall  
1
2
2
AT0820  
Screw mounting brackets to top and  
bottom of speaker  
1
32  
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mounting on floor stand (option 2)  
13 b  
Screw speaker stand into hole on  
bottom of speaker.  
1
• Turn clockwise to tighten  
Turn counter-clockwise to loosen  
1
AT0823  
AT0824 floor stand  
is also available  
33  
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seal wall mounting hole if using table stand  
13 c  
Place plastic plug into mounting  
1
bracket hole on top of speaker to  
keep out dust  
1
34  
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921T body-worn transmitter operation  
plug microphone in  
14  
Plug microphone cord into  
mic jack on top of body-worn  
1
Boom mic cord  
transmitter  
1
35  
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put on microphone and adjust for proper distance  
from mouth  
15  
Maximum distance from mic to mouth is 6 in/ (15cm); 3 in/ (7.5cm) is ideal.  
optimum  
optional  
AT0814 earhook mic  
performance: ★★★  
AT0655 boom mic (two wearing options)  
performance: ★★★  
15cm/  
6in max.  
7.5cm/3in  
AT0291-L directional lapel mic  
AT0816 collar mic  
performance: ★  
performance: ★★  
36  
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turn power on  
16  
Switch power on  
1
2
1
Check indicator light:  
2
Continuous green = adequate power  
Continuous red = low battery  
battery life  
NiMH rechargeable AA = 12 hours (approx.)  
Alkaline disposable AA = 15 hours (approx.)  
WARNING: Never recharge alkaline  
batteries! This will cause damage to the unit  
and will void the product warranty.  
37  
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adjust transmitter(s) frequency  
1
17  
Use a screwdriver to turn frequency  
selector to channel number that match-  
es the channel set on column speaker  
1
If using both body-worn and hand-  
held transmitters set one transmitter  
channel to match a Channel A on  
the speaker column, and the other  
transmitter channel to match  
a Channel B channel on the  
speaker column.  
2
921T  
2
NOTE: Never operate two transmitters on  
the same channel or interference will result.  
To use two transmitters, set the first to  
match receiver Channel A and the second  
to match receiver Channel B.  
922T  
920SR  
38  
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adjust body-worn transmitter volume  
18  
Increase transmitter volume for  
greater mic sensitivity and sound  
clarity  
1
2
Reduce transmitter volume if feed-  
back occurs  
1
2
39  
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activate standby/ mute mode  
19  
Activate standby mode to  
eliminate white noise when  
not speaking  
1
1
MUTE: Standby mode can also be used as  
a microphone/transmitter mute switch.  
The mute feature allows teachers to have a  
private conversation without needing to  
turn the transmitter off.  
40  
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922T handheld transmitter operation  
20  
turn power on  
Turn power on by pushing power  
switch up  
1
1
41  
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check indicator light  
21  
Check indicator light:  
1
Continuous green = adequate power  
Continuous red = low battery  
1
battery life  
NiMH rechargeable AA = 12 hours (approx.)  
Alkaline disposable AA = 15 hours (approx.)  
WARNING: Never recharge alkaline  
batteries! This will cause damage to the unit  
and will void the product warranty.  
42  
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remove channel adjustment key  
22  
Open battery compartment door and  
remove batteries  
1
2
Remove channel adjustment key  
2
1
43  
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adjust transmitter channel to match receiver channel  
23  
Using adjustment key, turn channel  
frequency selector to channel number  
1
that matches the channel set on  
column speaker  
NOTE: Never operate two transmitters on  
the same channel or interference will result.  
To use two transmitters, set the first to  
match receiver Channel A and the second  
to match receiver Channel B.  
1
920SR  
44  
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standby mode  
24  
Activate standby mode to mute  
voice and eliminate white noise  
when not speaking  
1
1
45  
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transmitters that can be used with 920SR receiver/ speaker  
25  
★★★★= most compatible  
= least compatible  
compatible  
(no adaptor  
cord required)  
performance  
accessory  
needed  
transmitter  
comments  
rating  
921T  
Radium  
★★★★  
none  
none  
none  
none  
922T  
Radium  
★★★★  
★★★★  
★★★  
330T  
EasyListener 2  
300TS-216  
Sprite  
best when used with AT0655 boom mic  
Lexis transmitter  
(as mic)  
★★★  
a) Lexis requires the use of the AT0655R boom mic  
b) may require use of external antenna for better  
range (389-02-120-02)  
c) set microphone to omni mode  
d) set sensitivity level to HI  
Phonak  
Campus S TX5  
★★★  
due to feedback, use of external boom mic from  
Phonak is recommended  
Phonak  
N/ A  
N/ A  
N/ A  
a) built-in mic prone to feedback  
HandyMic TX3  
b) requires use of external mic, which the  
HandyMic does not accommodate  
46  
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aux in – connecting to TV, CD, VCR, etc.  
connecting speaker to TV, CD, VCR, etc.  
26  
Using either the AT0532-05 or  
1
300-6332-107 adaptor cords,  
connect VCR, TV, CD, computer  
or other audio source to AUX IN  
port on top of speaker  
1
2
Use AUX IN VOLUME control to  
adjust volume  
2
AT0532-05  
or  
300-6332-107  
NOTE: AUX IN can be used simultaneously  
VCR  
with both Channel A & B.  
47  
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aux out – connecting to personal FM devices  
connecting to SOLARIS, EASY LISTENER, SPRITE or other transmitter  
(for rebroadcast of audio to students with hearing impairment)  
27  
Connect AT0532-05(ft) cord to  
1
1
AUX input jack of either SOLARIS,  
EASY LISTENER, SPRITE, or other trans-  
mitter. Connect other end of cable to  
AUX OUT port on top of speaker.  
3
Connect antenna AT0529A (included  
with transmitter system) to Mic/ Ant  
jack on transmitter  
2
3
AT0532-05  
AT0529A  
Ant jack  
Aux In  
Refer to level setting gide on next  
page to identify proper level for  
your transmitter  
1
2
PE 571T  
PE 300T  
PE 300TS  
OR  
OR  
48  
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aux out transmitter compatibility chart and level setting guide  
28  
NOTE: Common transmitters and recommended level settings are shown below. Because the level  
setting is universal, other transmitters not listed below may be used as well – simply set the aux  
out level to the position at which the receiver wearer hears a strong distortion-free signal.  
product name/ part  
aux in jack size  
aux out level setting  
Easy Listener 300T  
Sprite 300TS  
3.5mm  
3.5mm  
3.5mm  
3.5mm  
3.5mm  
3.5mm  
3.5mm†  
2.5mm*  
High  
High  
High  
High  
High  
High  
High  
High  
Sprite 300TS-216  
Solaris 571T  
Lexis 871T transmitter  
Phonak Campus S TX5  
Phonak HandyMic TX3  
Phonak MicroVox TX2  
* For transmitters with a 3.5mm jack size, simply attach the transmitter to the AT0805 aux out accessory  
cord. For 2.5mm products, use the aux out adapter plug (310-2544-1341)  
Requires special adaptor cord provided by Phonak (P/ N 52117) and Radio Shack adaptor (P/ N 274387).  
49  
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additional system accessories  
microphone options  
AT0816  
AT0291-L  
AT0814  
earhook microphone  
AT0655  
behind-the-neck  
boom microphone  
FM collar microphone directional microphone  
with mute switch  
with lavalier cord  
receiver accessories  
AT0820  
wall mounting bracket  
(set of 2)  
AT0823  
speaker table stand  
AT0824  
speaker floor stand  
AT0822  
carrying bag  
AT0801  
aux-box (adds four  
additional audio inputs)  
50  
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additional system accessories (contd)  
transmitter accessories  
AT0532-15  
auxiliary input/  
output cable  
(3.5mm–dual RCA)  
(15ft/4.6m)  
AT0529A  
transmitter antenna  
310-2544-1341  
aux-out adaptor plug  
(3.5mm2.5mm)  
AT0807  
AA rechargeable  
NiMH batteries  
51  
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troubleshooting  
no FM reception (Channel A, Channel  
B indicator does not have green light)  
speaker is receiving a signal but no  
sound is coming out  
Verify the transmitter is turned on  
Verify microphone is connected properly to  
transmitter and is working correctly  
Verify the frequency number on the trans-  
mitter matches the frequency number  
on receiver  
feedback from speaker  
• Turn down the volume on the transmitter  
• Turn down the volume on the speaker  
Verify transmitter batteries are charged  
Verify speaker antenna is connected properly  
• Make sure the person wearing the transmit-  
ter is not too close to the speaker  
weak sound from speaker  
• Increase volume on the speaker  
• Turn up transmitter volume  
• Move speaker so that it is facing away from  
presenter and toward listeners  
• Make sure AT0655 boom microphone (or  
other mic) is being worn correctly  
• Make sure AT0655 boom microphone (or  
other mic) is being worn correctly  
52  
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troubleshooting (contd)  
speaker does not turn on (power  
indicator does not flash red)  
speaker is picking up FM interference  
or hum  
Verify main power switch on the bottom of  
the unit is turned on  
• Check to make sure no other wireless sys-  
tems are operating on similar frequencies  
Verify Channel A and Channel B volume  
control knobs are turned on  
• Check to make sure the system is not placed  
too close to a computer  
Verify power supply is plugged securely into  
speaker and wall socket  
• Check to make sure metal objects are not  
placed too close to transmitter or speaker  
(i.e. jewelry, metal shelves)  
Verify wall socket works  
amber charge light is flashing when I  
attempt to charge my transmitter  
speaker battery does not charge  
• Connect power supply to speaker and  
charge for four hours. If speaker battery  
does not hold a charge, send the unit to  
Phonic Ear Service department for replace-  
ment (battery must be replaced after one  
year of continuous use).  
• Replace your batteries with a set of new  
NiMH cells (AT0807).  
53  
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Radium channel numbers and corresponding frequencies  
Channel #  
Channel A  
Channel #  
Channel B  
41 . . . . . . . . . . . 216.025 MHz  
42 . . . . . . . . . . .216.075MHz  
43 . . . . . . . . . . . 216.125MHz  
44 . . . . . . . . . . .216.175MHz  
45 . . . . . . . . . . .216.225MHz  
46 . . . . . . . . . . .216.275MHz  
47 . . . . . . . . . . . 216.325MHz  
48 . . . . . . . . . . .216.375MHz  
51 . . . . . . . . . . 216.525MHz  
52 . . . . . . . . . .216.575MHz  
53 . . . . . . . . . . 216.625MHz  
54 . . . . . . . . . .216.675MHz  
55 . . . . . . . . . .216.725MHz  
56 . . . . . . . . . .216.775MHz  
57 . . . . . . . . . . 216.825MHz  
58 . . . . . . . . . .216.875MHz  
54  
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product specifications  
two channel column speaker: 920SR  
carrier frequency range/  
frequencies  
216.025 –216.875MHz  
16 total  
dimensions (W  
x
H
x
D
)
100 x 660 x 145 mm/ 3.9 x 26 x 5.7 in  
weight 5kg/11lbs  
modulation  
FM (F3E)  
recharging time  
8 hours for initial charging  
output power maximum 36W @ 4x 2  
power requirements 110V/240V AC adaptor 15V DC/2A,  
4 7 hours for recharging  
battery operating time  
speaker stand  
5–8 hours (continuous operation)  
Battery 12V/2.7A  
(rechargeable, sealed lead-acid,  
1-1.5 year life with continuous usage)  
optional table stand (AT0823),  
floor stand (AT0824), or  
wall brackets (AT0820)  
frequency response  
100Hz 9kHz  
<2%  
de-emphasis  
squelch  
75µs  
RSSI  
total harmonic distortion  
system signal-to-noise  
ratio  
>65 dB (at rated output)  
inputs  
AUX x 1, power & charge  
output AUX x 1 (High: 700 mV/Low: 100mV)  
controls  
tone, channel A & channel B  
power/volume, aux volume,  
high/low output, master power,  
channel selector  
55  
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product specifications (contd)  
body-worn transmitter: 921T  
carrier frequency range/  
frequencies  
216.025 –216.875MHz  
16 total  
battery  
NiMH rechargeable (1600mA);  
alkaline disposable (2AA)  
battery life  
NiMH rechargeable: 12 hours (approx.)  
alkaline disposable: 15 hours (approx.)  
modulation  
FM (F3E)  
total harmonic distortion  
frequency response  
frequency stability  
<1.5%  
50Hz to 12KHz  
.0005%  
recharging time  
6 hours  
maximum modulation  
pre-emphasis  
± 25KHz, with level limiting  
75µs  
dynamic range  
operating range  
100dB  
>34m/110ft  
dimensions (W  
xH  
x
D
)
65 x 90 x 25 mm/ 2.5 x 3.5 x 1 in  
weight  
controls  
51g/1.8oz  
on/standby/off/channel selector/volume  
2.5mm microphone input jack  
inputs/outputs  
56  
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product specifications (contd)  
handheld mic transmitter: 922T  
charging stand: 923C  
power supply  
indicator lights  
AC adaptor (DC 12V/ 0.5A)  
carrier frequency range/  
216.025 –216.875MHz  
frequencies 16 total (see chart below)  
mic dynamic microphone  
antenna built-in  
LED green = battery ready  
LED orange = recharging  
LED red = power on  
LED blinking orange = fault (battery bad)  
RF output 15mW  
recharging time  
NiMH (1300mA): 4 hr  
135 x 47 x 230 mm/5.3 x 1.9 x 9 in  
360g/12.7oz  
battery NiMH rechargeable battery;  
dimensions (W  
x
H
xD)  
alkaline disposable; 1.5V x 2 AA  
weight  
battery life  
NiMH rechargeable: 12 hours (approx.)  
alkaline disposable: 15 hours (approx.)  
controls  
on/off switch  
recharging time  
6 hours (NiMH batteries)  
dimensions (dia x length) 54 x 237 mm/2.1 x 9.3 in  
weight 230g/8.1oz  
controls on/standby/off/channel selector  
57  
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warranty  
time period of warranty  
what is not covered by this warranty  
This warranty will go into effect upon the date  
of purchase and will stay in effect as long as  
the instrument remains the property of the orig-  
This limited warranty does not apply to:  
1. Malfunctions resulting from abuse, neglect  
or accident  
2. Instruments connected, installed, used or adjusted  
in any manner contrary to instructions provided  
by the manufacturer  
inal owner. EASYLISTENER 2 , VOCALIGHTand  
ONWAVEhave a 3-year warranty. All other prod-  
ucts have a 1 year warranty.  
what is covered by this warranty  
3. Consequential damages and damages resulting  
from delay or loss of this instrument. The exclu-  
sive remedy under this warranty is strictly limited  
to repair or replacement as herein provided  
4. Products damaged in transit unless investigated  
by the shipper and returned to the warrantor  
with the investigation report  
5. Peripheral accessories as itemized within the  
product specification sheet as applicable, when  
such items are not returned within 1 year from  
original purchase  
Any electronic component, which because of work-  
manship, manufacturing or design defects, fails to  
function properly under normal use during the life of  
this warranty will be replaced or repaired at no charge  
for parts or labor, when returned to the factory  
service center. Transportation in is paid by the cus-  
tomer. If it is determined that repair is not  
feasible, the entire unit may be replaced with an equiv-  
alent unit upon mutual agreement of the  
manufacturer and customer.  
6. Batteries if applicable  
58  
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warranty (contd)  
Phonic Ear Inc. reserves the right to make changes in  
the design or construction of any of its instruments at  
any time without incurring any obligation to make any  
changes whatsoever on units previously purchased.  
what to do if you need service  
If you require service under the warranty terms, obtain a  
service order form either online at www.phonicear.  
com/ support.asp or through our U.S. customer  
service department at 800.227.0735, then press 5  
(or +1.707.769.1110 outside the U.S.). Fill the form  
out completely remembering to include:  
This warranty is in lieu of all other expressed warranties.  
All expressed and implied warranties will terminate upon  
the expiration of this written warranty. No representative  
or person is authorized to represent or assume for us any  
liability in connection with the sale or use of our prod-  
ucts other than as set forth above.  
1. Description of the problem  
2. Your billing address  
3. Your shipping address (if different from  
billing address)  
what to do if you have questions  
If you have any questions about service, call the service  
4. Contact name and phone number  
department at 800.227.0735, then press 7.  
5. A P.O. number if the equipment is not under a  
warranty or service contract  
59  
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warranty (contd)  
Then, carefully package the equipment in the  
original shipping container to prevent damage  
and send it postpaid to the service center near you:  
about your batteries  
To ensure that your batteries are as fresh as possible  
upon arrival, we have intentionally not installed  
them in your equipment.  
USA/ International:  
Phonic Ear Inc.  
3880 Cypress Drive  
Petaluma, CA 94954-7600  
U.S.A.  
install your batteries in your equipment now,  
then charge overnight before initial use  
(see user guide for charging procedure).  
avoid battery corrosion  
In Canada:  
To avoid battery corrosion and damage to your  
equipment, do not recharge disposable or  
rechargeable alkaline batteries. Before charg-  
ing any Phonic Ear equipment make sure only  
NiMH rechargeable batteries are installed. As an  
added precaution, remove batteries if the equipment  
will not be used for several weeks.  
Phonic Ear Ltd.  
10-7475 Kimbel Street  
Mississauga, Ontario  
L5S 1E7 Canada  
what to do if you have questions  
If you have any questions about service, call the service  
department at 800.227.0735, then press 7.  
60  
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regulatory approvals and clearances  
transmitter  
IMPORTANT NOTE: To comply with FCC RF  
exposure compliance requirements, only use sup-  
plied antenna that is sold with this transmitter.  
Use of any other antenna which has not been  
approved by the manufacturer will violate FCC  
rules and regulation and void the users authority  
to operate this device. This device and its antenna(s)  
must not be co-located or operating in conjunction  
with any other antenna or transmitter.  
This transmitter is authorized by rule under the Low  
Power Radio Service (47 C.F.R. Part 95) and must  
not cause harmful interference to TV reception or  
United States Navy SPASUR installations. You do  
not need an FCC license to operate this transmitter.  
This transmitter may only be used to provide: audi-  
tory assistance to persons with disabilities, persons  
who require language translation, or persons in edu-  
cational settings; health care services to the ill; law  
enforcement tracking services under agreement with  
a law enforcement agency; or automated maritime  
telecommunications system (AMTS) network control  
communications. Two-way voice communications  
and all other types of uses not mentioned above are  
expressly prohibited.  
This device may not interfere with TV reception or  
federal government radar, and must accept any inter-  
ference received, including interference that may  
cause undesired operation.  
61  
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regulatory approvals and clearances (contd)  
receiver: part 15, subpart B  
radio communications. However, there is no guar-  
antee that interference will not occur in a particu-  
lar installation. If this equipment does cause  
harmful interference to radio or television recep-  
tion, which can be determined by turning the  
equipment off and on, the user is encouraged to  
try to correct the interference by one or more of  
the following measures:  
Radium Receiver/ Speaker  
920SR  
Tested to comply with  
FCC Standards  
FOR HOME OR OFFICE USE  
• Reorient or relocate the receiving antenna.  
• Increase the separation between the equipment  
and receiver.  
This equipment has been tested and found to  
comply with the limits for a Class B digital  
device, pursuant to Part 15 of the FCC Rules.  
These limits are designed to provide reasonable  
protection against harmful interference in a resi-  
dential installation. This equipment generates,  
uses and can radiate radio frequency energy and,  
if not installed and used in accordance with the  
instructions, may cause harmful interference to  
• Connect the equipment into an outlet on a  
circuit different from that to which the receiver  
is connected.  
• Consult the dealer or an experienced radio/TV  
technician for help.  
62  
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regulatory approvals and clearances (contd)  
FCC notes  
Part 95  
The Radium sound field system is approved by  
the FCC (Federal Communications Commission).  
The use of the system may be governed by specific  
FCC rules and FCC licensing or notifications may  
be required. Consult your local FCC office for  
detailed information.  
This transmitter is authorized by rule under the  
Low Power Radio Service (47 CFR Part 95) and  
must not cause harmful interference to TV recep-  
tion or United States Navy SPASUR installa-  
tions. You do not need an FCC license to oper-  
ate this transmitter. This transmitter may only be  
used to provide auditory assistance to persons  
with disabilities, persons who require language  
translation, or persons in educational settings;  
health care services to the ill; law enforcement  
tracking service under agreement with a law  
enforcement agency; or automated maritime  
telecommunication system (AMTS) network  
control communications. Two-way voice commu-  
nications and all other types of uses not men-  
tioned above are expressly prohibited.  
Phonic Ear FM receivers and FM transmitters,  
when required, are approved by the Federal  
Communications Commission (FCC) in the U.S.  
and Industry Canada. Other government  
approvals are available upon request. (Other inter-  
national regulations may also apply.)  
Any changes or modifications made to any gov-  
ernment-approved element of this instrument,  
without the express approval of Phonic Ear Inc in  
writing, could void the user's authority to operate  
those elements of the system.  
63  
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regulatory approvals and clearances (contd)  
This device may not cause interference and must  
accept any interference received, including inter-  
ference that may cause undesired operation.  
If TV channel 13 is used in the area, the installer  
shall reduce or adjust the RF radiated power so  
that near-by TV channel 13 receivers do not  
receive radio interference from the system  
installed. Suggestions: A test with a TV receiver  
equipped with "rabbit-ear antenna" and tuned to  
channel 13 should be conducted, at the perimeter  
of the users' intended coverage area and not  
over-lapping other user's areas without the latter's  
consent. If this does not solve the problem, a  
channel near the 217 MHz edge and not near  
216 MHz should be tried.  
These devices may not interfere with TV recep-  
tion or Federal Government radar.  
IC notes  
This Class B digital apparatus complies with  
Canadian ICES-003.  
Cet appareil numérique de la classe B est  
conforme à la norme NMB-003 du Canada.  
This product has been cleared  
by the U.S. Food and Drug  
Administration for use by persons with normal  
hearing and hearing impairment.  
The term "IC:" before the radio certification  
number only signifies that Industry of Canada  
technical specifications were met.  
64  
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u.s.a. 800.227.0735, then press 5 • canada 800.263.8700 • international +45 3917 7101  
© 2005 Phonic Ear Inc. Phonic Ear and the names of Phonic Ear products are trademarks or registered trademarks of Phonic Ear Inc. in the U.S. and  
other countries. Product specifications and accessories subject to change without notice.  
821-7403-101/Rev. D/4724 0205  
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