Building the ultra light boombox

voyage · 5th June 2011, 07:54 PM

Looking for suggestions for 4" drives.
Want to build a very portable but still fairly loud boombox for a day in the park.
It's essential that they have low power usage as I might bring it to festivals aswell, and should last as long as possible without having to charge.
My last build lasted for a full 5 days without charging. For that build I had a SLA 7.2Ah battery, a cheap t2024 from ebay and these speakers:
http://www.netonnet.se/Files/Items/1...nts/DCX165.pdf

Any ideas?

Here's the inspiration:
YouTube - ‪DIY Boombox‬&rlm;

voyage · 14th June 2011, 12:27 PM

Hm, really, no suggestions?

Been looking at the Monacor SP60/4 but I realized that together with tweeters the build will become to big for the purpose.

So I'm wondering if someone have recommendations for fullrange 4" drivers?
Looked at these:
FE126En - Fostex 4.5 inch Full Range Speaker - Europe Audio

But apparently they might to vulnerable for boombox use..

Saturnus · 14th June 2011, 01:05 PM

There are many other factors that makes full range speakers a poor choice for boom box use, first and most significant is the limited coverage angle. Boom boxes are meant to be used with a group of people that move around a lot, the narrow coverage angle of full range drivers inherently prohibits that.

voyage · 14th June 2011, 01:18 PM

Hm, in that case it's almost impossible to manage to get a small build.
Is it possible place the tweeters somewhere else besides in the front?

Here are some sketches, and I'm pretty much stuck..

http://dl.dropbox.com/u/3618143/high.png
http://dl.dropbox.com/u/3618143/wide.png

The thing in the middle is some space for an iPod dock

Saturnus · 14th June 2011, 01:34 PM

You can make a bipolar build

voyage · 14th June 2011, 01:35 PM

Haha, right, but where should I place the iPod dock then?

Saturnus · 14th June 2011, 01:39 PM

On the top

voyage · 14th June 2011, 01:42 PM

Obviously, but the catch is that I want to be able to protect the iPod by putting a removable plexiglas to shield the iPod (and hide it from people that might be interested in stealing it..

5th June 2011, 07:54 PM	#1
voyage diyAudio Member Join Date: Feb 2011	Building the ultra light boombox Looking for suggestions for 4" drives. Want to build a very portable but still fairly loud boombox for a day in the park. It's essential that they have low power usage as I might bring it to festivals aswell, and should last as long as possible without having to charge. My last build lasted for a full 5 days without charging. For that build I had a SLA 7.2Ah battery, a cheap t2024 from ebay and these speakers: http://www.netonnet.se/Files/Items/1...nts/DCX165.pdf Any ideas? Here's the inspiration: YouTube - ‪DIY Boombox‬&rlm;

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For sale: Ultra Analog DAC, Ultra Analog AES20, HDCD filter	mihow2007	Swap Meet	1	27th February 2011 06:33 PM
dBpoweramp Renaissance - Ultra Light Resource Player	Jason	Software Tools	1	23rd October 2010 09:11 PM
Building an ultra cheap speaker, help me please...	kanan	Multi-Way	32	12th January 2006 08:05 PM
Seeking ultra, ultra mini 1uF elec cap	Triophile	Parts	11	6th April 2005 11:17 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

14th June 2011, 12:27 PM	#2
voyage diyAudio Member Join Date: Feb 2011	Hm, really, no suggestions? Been looking at the Monacor SP60/4 but I realized that together with tweeters the build will become to big for the purpose. So I'm wondering if someone have recommendations for fullrange 4" drivers? Looked at these: FE126En - Fostex 4.5 inch Full Range Speaker - Europe Audio But apparently they might to vulnerable for boombox use..

14th June 2011, 01:05 PM	#3
Saturnus diyAudio Member Join Date: Jun 2005 Location: Copenhagen, Denmark	There are many other factors that makes full range speakers a poor choice for boom box use, first and most significant is the limited coverage angle. Boom boxes are meant to be used with a group of people that move around a lot, the narrow coverage angle of full range drivers inherently prohibits that.

14th June 2011, 01:18 PM	#4
voyage diyAudio Member Join Date: Feb 2011	Hm, in that case it's almost impossible to manage to get a small build. Is it possible place the tweeters somewhere else besides in the front? Here are some sketches, and I'm pretty much stuck.. http://dl.dropbox.com/u/3618143/high.png http://dl.dropbox.com/u/3618143/wide.png The thing in the middle is some space for an iPod dock

14th June 2011, 01:34 PM	#5
Saturnus diyAudio Member Join Date: Jun 2005 Location: Copenhagen, Denmark	You can make a bipolar build

14th June 2011, 01:35 PM	#6
voyage diyAudio Member Join Date: Feb 2011	Haha, right, but where should I place the iPod dock then?

14th June 2011, 01:39 PM	#7
Saturnus diyAudio Member Join Date: Jun 2005 Location: Copenhagen, Denmark	On the top

14th June 2011, 01:42 PM	#8
voyage diyAudio Member Join Date: Feb 2011	Obviously, but the catch is that I want to be able to protect the iPod by putting a removable plexiglas to shield the iPod (and hide it from people that might be interested in stealing it..

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)