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background image

the

AirHead

the

Total AirHead

portable headphone ampliﬁer

Owner’s Manual

obsessed headphone geeks at your service.

www.headphone.com

1 AirHead/Total AirHead
headphone ampliﬁer
3 rubber adhesive feet
assorted adhesive Velcro feet
1 owner’s manual
1 mini-to-mini cable

Package Contents

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Содержание AirHead

Страница 1: ...eadphone ampliﬁer Owner s Manual obsessed headphone geeks at your service www headphone com 1 AirHead Total AirHead headphone ampliﬁer 3 rubber adhesive feet assorted adhesive Velcro feet 1 owner s manual 1 mini to mini cable Package Contents ...

Страница 2: ...of headphones with your AirHead different headphone efﬁciencies will most likely mean that the volume level will need to be adjusted to achieve adequate sound levels in the headphones The clipping indicator ﬂashes when the amp doesn t have enough voltage to drive the headphones This can happen at peak passages when listening at a fairly loud level and or with high impedance headphones It will also...

Страница 3: ...2 7 Headphone Jack 1 Volume Control Power Switch Processor Switch Headphone Jack 2 Clipping Indicator 4 Power LED 6 5 3 1 7 3 The AirHead ...

Страница 4: ...t least 300 mA of current and between 5 vdc and 12 vdc center tip positive On the top of the AirHead is a battery door To replace your batteries the AirHead requires 4 AAA cells simply pull up on the small tab sticking out of the back of the battery door This will lift the entire rubber door This exposes the battery compart ment remove the old batteries and insert four new ones Note always replace...

Страница 5: ...cable included 5 Your AirHead has been supplied with a number of different feet The rubber feet can be stuck to the bottom of the amp if you are simply going to place it on a tabletop But we like to attach the amp to the various source devices with the enclosed Velcoins First remove the hook coins the scratchy ones with all the miniature hooks from their adhesive strip and stick them into the thre...

Страница 6: ...o that and adjust the volume on your AirHead Using two pair of headphones with the AirHead YoucanruntwopairofheadphonesoffyourAirHeadprovidedthattheyareofsimilarimpedance levels Consultyourheadphonemanufacturer swebsitetoconﬁrmyourheadphones impedance level The AirHead is able to drive headphones of different impedance levels however the volume level will not be the same between the two pair of he...

Страница 7: ...DC offsets The problem is capacitors in the signal path would degrade the audio somewhat We ﬁgure it s better to have a little pot noise when you adjust the volume and better audio purity while you listen Q How long do the batteries last on my Total AirHead A The AirHead and Total AirHead can be powered for approximately 40 hours on 4 AAA batteries Q Can I run my AirHead without batteries by plugg...

Страница 8: ...n becomes fatigued trying to ﬁgure out where sound is coming from when only one ear is hearing it This tends to create an audio image that is a blob on the left blob on the right and a blob in the middle HeadRoom ampliﬁers cure the problem by allowing you to cross feed a little of the left and right channels across to each other through a short time delay using the processor switch The usefulness ...

Страница 9: ... level when driving a pair of efﬁcient Grados We realized that a clipping indicator on the ever diminishing voltage of a set of batteries would be the best low battery indicator of all For a given volume level at your headphones the battery volt age will eventually get lower than the signal and the clipping indicator will start to blink with the louder bits of the music If the clipping indicator s...

Страница 10: ...ible for paying the shipping charges to get the product to us but we ll take care of shipping it back to you 3 For units out of warranty repairs are billed on a time and parts basis plus shipping When we receive your equipment we will initiate repairs quickly usually within three working days Please ship the product back in the original shipping box or another that is comparable Please don t send ...

Страница 11: ... product but to keep costs down we do have a few guidelines Don t worry the vast majority of returns are refunded we just need to make our return policy one that s fair to everyone Conditions of Our Guaranty Products must be returned to us within 30 days of the date you receive the product So make sure you try your purchase out right away It s amazing how many people say they left the country for ...

Страница 12: ...ve this message home here s a bit of information about hearing damage The most common type of damage caused by prolonged or excessively loud sound is called tinnitus It manifestsitselfasasustainedbuzzingand orringingintheears andcanbecomeapermanent condition Ifyouﬁndthatyourearsareringingorthatthereisasensationofpressureorfatigue yourbody is trying to tell you that your ears need a break Give them...

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