Speaker Bag
SPEAKER BAG + CASTED KNOB BY KnobKnobs

Where else and how can a little speaker be integrated? On a hat, inside your old bread box, mounted on a bike powered by a dynamo, hidden outside powered by solar energy? We are looking forward to hear about your ideas. If you are interested in buying a unique amp accessoire built by us please contact mail@liminalsound.de! We will create them only on demand and based on your ideas. For unique Knobs like we used for the bag visit knobknobs.com . If you want to start with electronics, this is also a good first project. Below you will find all the informations you need to build a simple version of it by yourself.

TDA2822D is a 8-Pin audio amplifier IC and is designed for driving little speaker in portable devices like cassette players and radios. With a few extra components you can built a simple power amp with lots of gain and a wide range of supply voltage (1.8-15V). The sound quality is compareable maybe even a bit better than the famous Ruby Amp Circuit based around the LM386. Over the time we built many adaptions of this circuit, made some workshops and used it for lots of experiments with speakers, coils and resonators. It works by small batteries or even solar energy and combined with a simple jfet preamp circuits it makes a great portable guitar amp.

Schematics Speaker Amp