Natural acoustic amplifier speaker designed for by woodandwire
SALE Acoustic iPhone Speaker for iPhone 4 and iPhone 5, Passive iPhone Speaker, Wood iPhone Dock, iPhone Speaker Dock by SpeakerBlock on Etsy https://www.etsy.com/listing/235116867/sale-acoustic-iphone-speaker-for-iphone
Guitar mimicking Palmer iPhone Dock uses natural acoustics to amplify sounds
Handcrafted, passive, electricity-free speaker for your iPad or iPhone.
make a wooden passive speaker... layers of wood... and do two flowers!
Passive speaker for iphone by taesoon hyun, via Behance
Acoustic Guitar Natural amplifier speaker designed by woodandwire
Passive iPhone speaker by BSharpwoodworking on Etsy