Light and cheap DIY portable speaker

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Hi folks! I put together this speaker at last minute, next day heading to a summer festival. I wanted something light to carry around, since my other preferred system weight almost 8kg. Also had to be durable and extremely cheap... I ended with this:

Components:

Amp Yamaha yda138 - 6€
4" 4Ohm 35w car speaker - free
12cm pvc pipe - free
12v Led strip - 3€
Battery 4500Mah CCTV Li-ion - 20€
6.3mm Jack - 1€
On/off switch - 1€
Voltmeter - 2€
Strap and "carpet" cover - free
blue leds - free
rca (for passive speaker out) - free
sealant, hardware... - 1€?
Total: 34€. Ok, budget checks out. Let´s go to the scale and... 1.4kg. Very portable, indeed! The round shape and the soft cover makes it extremely easy to carry.

The sound is  pretty decent for what it is, not the best sounding or the loudest of my systems but still ok. Clean mids and highs, kinda lacking bass outdoors but with a somewhat punchy sound. 
There are some upgrades to come: Build a passive speaker in the same fashion, redesign the back lid to add a cover for the controls and connections, and a cheap usb bluetooth module.

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caligula303 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 11 April 2014 Location: spain Status: Offline Points: 12	Post Options Post Reply Quote caligula303 Report Post Thanks(0) Quote Reply Topic: Light and cheap DIY portable speaker Posted: 02 October 2014 at 10:53pm
	Hi folks! I put together this speaker at last minute, next day heading to a summer festival. I wanted something light to carry around, since my other preferred system weight almost 8kg. Also had to be durable and extremely cheap... I ended with this: Components: Amp Yamaha yda138 - 6€ 4" 4Ohm 35w car speaker - free 12cm pvc pipe - free 12v Led strip - 3€ Battery 4500Mah CCTV Li-ion - 20€ 6.3mm Jack - 1€ On/off switch - 1€ Voltmeter - 2€ Strap and "carpet" cover - free blue leds - free rca (for passive speaker out) - free sealant, hardware... - 1€? Total: 34€. Ok, budget checks out. Let´s go to the scale and... 1.4kg. Very portable, indeed! The round shape and the soft cover makes it extremely easy to carry. The sound is pretty decent for what it is, not the best sounding or the loudest of my systems but still ok. Clean mids and highs, kinda lacking bass outdoors but with a somewhat punchy sound. There are some upgrades to come: Build a passive speaker in the same fashion, redesign the back lid to add a cover for the controls and connections, and a cheap usb bluetooth module.

Blaize110 Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 11 May 2010 Location: Gloucestershire Status: Offline Points: 673	Post Options Post Reply Quote Blaize110 Report Post Thanks(0) Quote Reply Posted: 02 October 2014 at 10:57pm
	I like the volt meter mounted in the grill, though my inner ocd dislikes that it's not lined up with the JBL logo :P

caligula303 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 11 April 2014 Location: spain Status: Offline Points: 12	Post Options Post Reply Quote caligula303 Report Post Thanks(0) Quote Reply Posted: 02 October 2014 at 11:00pm
	hahaha i have to re-align everything, i was in a hurry