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I A S U S _ E A R 3 H _ O P E R AT I N G I N S T R U C T I O N S _ v 1 _ 2 0 2 0

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C O N N E C T I N G   T H E   E A R 3 H

AUDIO OUT

AUDIO SOURCE

LONG 

EXTENSION CABLE

(OPTIONAL)

SHORT 

EXTENSION CABLE

(OPTIONAL)

OUTPUT JACK

INPUT JACK

HELMET COMM SYSTEM, 

SMARTPHONE, 

MUSIC PLAYER...

HELMET SPEAKERS,

EARPHONES...

Note:

 

While the EAR3H Output Jack supports headsets and earbuds with an inline mic, any mic 

input will not pass through the EAR3 and into the audio source. A smartphone will not receive 
any input from that mic.

IASUS Rekon Helmet Comm System 
Sold Separately

Summary of Contents for EAR3H

Page 1: ...t environment you wish to experience premium in ear audio The EAR3H is based on the EAR3 Micro Amp but with a special attachement designed for helmet users an IASUS proprietary quick release mounting...

Page 2: ...anty Should there be any questions or concerns about modifications please contact IASUS Do not operate your device at high volume levels when using the EAR3H Amplifier Hearing experts advise against c...

Page 3: ...CE 5 BOOSTING VOLUME AND SAVING BATTERY LIFE 6 CHARGING THE EAR3H 6 SPECIFICATIONS 5 CONTROLS 7 MOUNTING THE EAR3H ONTO A HELMET 11 TRANSPARENCY MODE 12 1 YEAR LIMITED WARRANTY 15 CONNECTING THE EAR3H...

Page 4: ...ifier B Quick Release Clip C XSound 3 Helmet Speakers Sold Separately ACCESSORIES D 3 5mm to USB A Charging Cable E Short Extention Cable F Long Extension Cable with right angled plug G Quick Release...

Page 5: ...mm jack plug 5 Volume Knob 6 Quick Release Clip 7 Charging indicator LED 8 Lanyard Loop 1 8 4 5 6 2 7 3 S P E C I F I C AT I O N S 51mm x 37mm x 20mm 2 x 1 3 8 x 3 4 30g 1oz OPERATION 20 HOURS charge...

Page 6: ...H will not be used for a prolonged period fully charge the unit before storing to prevent permanent damage to the battery One of the EAR3H s main features is amplifying your audio source s signals to...

Page 7: ...el a click To power off the EAR3H turn it counter clockwise until you hear and feel the click To decrease the volume turn it counter clockwise CLICK POWER ON OFF VOLUME WARNING Do not turn the volume...

Page 8: ...LE OPTIONAL OUTPUT JACK INPUT JACK HELMET COMM SYSTEM SMARTPHONE MUSIC PLAYER HELMET SPEAKERS EARPHONES Note While the EAR3H Output Jack supports headsets and earbuds with an inline mic any mic input...

Page 9: ...Source into the Input jack 3 of the EAR3H Amp In most cases when installing onto a large helmet use the included extension cable with right angle plug to connect the EAR3H Amp with your audio source h...

Page 10: ...H Connect helmet speakers or earphones directly into the Output jack 4 of the EAR3H Amp If needed use the included short extension cable For a tidy installation cables can be tucked behind the helmet...

Page 11: ...ng surface of your helmet Secure the EAR3H onto the Quick Release Mount G Peel the second backing paper on the 3M Adhesive Position on your helmet and press firmly To remove EAR3H from the mount simpl...

Page 12: ...und you as you enjoy your amplified audio Mixing ambient sounds into your audio source is simple and convenient to do Power on EAR3H Amp by turning the volume knob 5 until you hear and feel a click Pu...

Page 13: ...han the ambient sounds turn up the volume on the audio source and reduce the EAR3H volume The following table give some examples on how the ambient sounds EAR3H and the audio source affects the desire...

Page 14: ...d with caution to avoid over boosting your helmet speakers earphones headphones etc but most importantly to avoid permanently damaging your hearing When using the EAR3H in environments where ambient s...

Page 15: ...so and to view detailed information about our warranty service please visit https iasus concepts com warranty TO GET WARRANTY SERVICE FROM IASUS CONCEPTS Please contact our customer service department...

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