Helpful hint, Charging the hm-70 handheld mic – LightSpeed Technologies 850IR User Manual
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850iR User Manual | 6
17 | 850iR User Manual
8 5 0 i R U s e r M a n u a l
8 5 0 i R U s e r M a n u a l
LES 850iR Classroom Amplification System
6
5. B VOLUME:
Controls the volume
 level of the optional second 
 microphone that is switched to 
 Channel B. Rotating the knob 
 clockwise increases output level.
6. AUDIO INPUT VOLUME:
• COMPUTER:
Controls the volume
 of audio coming from a computer 
 connected to the rear panel 
 COMPUTER INPUT jack.
• TV/VCR:
Controls the volume of
 the source connected to the rear 
 panel TV/VCR INPUT.
• CD/DVD:
Controls the volume
 of the source player connected 
 to the rear panel CD/DVD INPUT.
CHARGING THE HM-70 HANDHELD MIC
1. Ensure
the HM-70 Handheld
 Microphone is turned OFF (ON/OFF 
 switch on the side of the unit). 
 The 850iR can be left on, but must 
 be connected to AC power in order 
 to charge the microphone. 
2. Connect
the loose end of the
 charging cable into the jack labeled 
 CHARGER on the side of the HM-70. 
 Connect the larger end of the 
 charging cable to one of the 
 CHARGERS jacks on the back of the 
 850iR. The HM-70’s rechargeable 
 batteries are factory installed. 
3. The power
indicator light next to
 the power switch glows green when 
 the cable is connected and charg- 
 ing correctly. The light goes out 
 when fully charged. Batteries 
 will charge in 8 to 12 hours. A fully 
 charged battery will run for up to 8 
 hours of continuous operation.
4. The HM-70
can remain charging
 for up to 10 days. Overcharging 
 will shorten battery life.
The HM-70 does not use a cradle for charging. 
The charging cable must be plugged directly 
into the charging jack in the transmitter.
Helpful 
Hint
SPEAKER OUTPUTS
250 400
700
1K
1K4
2K5
4K
6K
+10
0
-10
OFF
OFF
OFF
OFF
ON
ON
ON
ON
VOL.
ADJ.
ALD OUT AUX OUT
VOL.
ADJ.
COMPUTER
AUDIO INPUTS
TV/VCR
CD/DVD
800iX
INPUT
PAGING INPUT
ADJ
DC POWER CHARGERS
24VDC
L
L
R
R
SENSOR INPUTS
SENSOR
SHORT
1
2
3
4
