Old 10-30-2009, 01:31 PM
Dobson Dobson is offline
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Join Date: Jul 2009
Posts: 14

So here comes my audio backpack v2. Main idea was to make bag that looks normal:

Then when you open first stage comes audio:




Because I use only one channel, so another one I left to external speaker or subwoofer like in the picture...

The backpack is really loud, and with subwoofer it shakes ground, battery ir 4.5Ah thinking about going on 7Ah, and on TDA7377 amplifier chip which handles 70W.

Main section of back pack is free as it was when I bought it.
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Old 10-30-2009, 11:47 PM
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curiouswonderer curiouswonderer is offline
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Join Date: Sep 2007
Location: vancouver, bc
Posts: 1,316

Transformers, speakers in disguise!
"I don't think, therefore I am not"
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Old 10-31-2009, 04:03 PM
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Curiouss Curiouss is offline
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Location: Vancouver, Canada
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LOl,Im imagining myself using that backpack, and suddenly turn it on REAL loud at the bus station after school....
haha, that'll freak everyone out.
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Old 04-08-2010, 11:24 PM
agalloch agalloch is offline
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Join Date: Apr 2009
Posts: 29

That is great! I really need to build something like that, tired of my friends pulling my iem's out of my ears and asking me what i'm listening to.
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Old 04-08-2010, 11:59 PM
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lestatar lestatar is offline
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Join Date: Dec 2009
Location: Hong Kong now, but NYC always
Posts: 4,656

Kinda old thread, but to the OP:

Great work! Love it...
DAPs:2xRBFuze8+16GB|SonyE345|ZenV+,Micro,Xtra40GBx2|RBG igabeatFX|RCAOpal
IEMs:PanaHJE900|Nuforce 700x|HippoVB|iMetal590,i490|SM PL-21|CX300|EP630,Aurvana
PoolCues: a bunch
A Glossary for Newbies
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Old 04-10-2010, 10:37 AM
TheEAR TheEAR is offline
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Join Date: Apr 2010
Location: Montreal,CANADA
Posts: 96

Try to pass a security checkpoint with this... HALT! HALT! Insert small arms shots...
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Old 05-12-2010, 10:13 PM
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Mediaogre Mediaogre is offline
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Join Date: Feb 2010
Location: Oregon
Posts: 71

I am having sack envy. GREAT work. I love a good DIY project.
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Old 05-17-2010, 10:25 AM
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RAMDAS RAMDAS is offline
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Join Date: Apr 2009
Posts: 6

I think the setup just needs a 50W downfiring subwoofer to literally blow things away..
Backpack Music Maniac..
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