Yet another loud GhettoBlaster - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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
Reply
 
Thread Tools Search this Thread
Old 13th February 2011, 05:05 PM   #1
willek is offline willek  Finland
diyAudio Member
 
Join Date: Feb 2011
Location: Tampere
Default Yet another loud GhettoBlaster

Here is my earlier blaster, built in 2009.

Click the image to open in full size.

More story and building pictures here:
AllTheMods - Hardware Modding & Tuning Gallery


Altough this blaster served well enough, I wanted MORE sound. I started building this new blaster in the summer in 2010, and though it has been in use several times, it is not yet finished.

Click the image to open in full size.
Click the image to open in full size.

Drivers are Visaton BG 20. I chose them for their excellent sensitivity. Altough quite cheap, They offer real bang for the buck.
Amplifier is amp6 Basic from 41Hz.com. Digital and offers 2x15 W.
I chose lithium-ion batteries over NiMh or LiPo, since they are more carefree.
These are trustfire 18650 2500mAh 3,7V cells and in series they produce 14,8V which is ideal for the amp6.

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

The casing is 4mm plywood and fiberglass.

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

The main music player is an old internet tablet Nokia N800. I also added an USB/SD-card player which works with a remote.
And of course there is a plug for external players like cellphones.

Click the image to open in full size.
Click the image to open in full size.

Some leather ornaments and guard for the driver.

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

My original idea was to paint the blaster perly white with some car paint, but since I was in a hurry to get it ready, I used spray paint. On impulse I chose fluo yellow.
It came out quite aggressive

Comments?
Better color suggestions?
  Reply With Quote
Old 13th February 2011, 05:52 PM   #2
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: Near Vancouver
Excellent job Willek. The colour is just fine and the workmanship is commendable. I have been mulling around some ideas myself after the last one didn't quite cut it. Tell me please what cloth you use for forming the speaker area and how you laid up your fiberglass. Please include the weights, plies, resin, etcetera.

Thanks for showing us.
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote
Old 13th February 2011, 06:31 PM   #3
willek is offline willek  Finland
diyAudio Member
 
Join Date: Feb 2011
Location: Tampere
The "cloth" is an old T-shirt. I guess it was cotton.
The resin is regular boat-stuff, styrene based polyesther resin.
There are 2-3 plies of fiberglass, but I think I sanded most of it off while trying to get it even.
If by weight(s?) you mean the whole blaster, it is some 8 kg.
  Reply With Quote
Old 13th February 2011, 10:16 PM   #4
Wizard of Kelts
diyAudio Moderator
 
Join Date: Sep 2001
Location: Connecticut, The Nutmeg State
Breathes there a diy audio fan who does not have in the back of his mind building the biggest kickass blaster in history?

Looks like you've done it. Forming it out of fiberglass for that custom look really puts it in another class altogether. Looks like it came out of a factory with machine tooling, etc. Congratulations!
__________________
"A friend will help you move. A really good friend will help you move a body."
-Anonymous
  Reply With Quote
Old 13th February 2011, 11:22 PM   #5
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: Near Vancouver
Quote:
Originally Posted by willek View Post
There are 2-3 plies of fiberglass,
Hi Willek, thanks for the answers. By weight I was meaning the glass mat. I am supposing it is non-woven either 1 oz. or 2 oz.? And did you resin the shirt first and let it dry to get a surface on which to lay up your build up?
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote
Old 14th February 2011, 08:04 AM   #6
willek is offline willek  Finland
diyAudio Member
 
Join Date: Feb 2011
Location: Tampere
Quote:
Originally Posted by kelticwizard View Post
Breathes there a diy audio fan who does not have in the back of his mind building the biggest kickass blaster in history?

Looks like you've done it. Forming it out of fiberglass for that custom look really puts it in another class altogether. Looks like it came out of a factory with machine tooling, etc. Congratulations!
Thanks!

Quote:
Originally Posted by Cal Weldon View Post
Hi Willek, thanks for the answers. By weight I was meaning the glass mat. I am supposing it is non-woven either 1 oz. or 2 oz.? And did you resin the shirt first and let it dry to get a surface on which to lay up your build up?
I dont actually know which weight it was, but definitely not woven. In retrospect, I think I should have used lighter mat since the surface came out so rough. And yes, I let theT-shirt harden with resin before applying the glass mat layers.
  Reply With Quote
Old 14th February 2011, 03:23 PM   #7
diyAudio Member
 
Join Date: Mar 2006
Location: Montana Missoula
Stellar Job!

What did it cost and how much did it end up weighing?
  Reply With Quote
Old 14th February 2011, 04:36 PM   #8
willek is offline willek  Finland
diyAudio Member
 
Join Date: Feb 2011
Location: Tampere
Quote:
Originally Posted by mr. doom View Post
Stellar Job!

What did it cost and how much did it end up weighing?
Thanks!
Total cost was about 300 euros and final weight about 8 kg
  Reply With Quote
Old 14th February 2011, 05:39 PM   #9
diyAudio Member
 
AdamThorne's Avatar
 
Join Date: Oct 2006
Location: Los Angeles, CA
Looks killer! Don't change the color. Maybe a clear coat on it though. How long will it play? Looks like no separate tweeter, are you satisfied with the HF of the driver alone?
  Reply With Quote
Old 14th February 2011, 07:26 PM   #10
willek is offline willek  Finland
diyAudio Member
 
Join Date: Feb 2011
Location: Tampere
Quote:
Originally Posted by AdamThorne View Post
Looks killer! Don't change the color. Maybe a clear coat on it though. How long will it play? Looks like no separate tweeter, are you satisfied with the HF of the driver alone?
Yeah clearcoat crossed my mind though I have to redo the paintjob first. It was done in a rush and looks quite horrible on closer inspection.
I was actually suprised how well the Visaton drivers handle the high frequecies. It is well and beyond enough for the outdoors use this is designed for.
Playtime with full volume is about a day, and with medium volume easily a weekend. The N800 battery runs out well before the main battery
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Li-Ion supply for ghettoblaster hospadar Power Supplies 6 8th January 2011 08:36 AM
My GhettoBlaster college Project vinaltap Full Range 5 17th May 2009 04:01 PM
Building battery back for old Ghettoblaster. Williham Everything Else 5 8th January 2008 07:40 PM
Ghettoblaster project klavikka Everything Else 7 13th July 2007 04:14 PM


New To Site? Need Help?

All times are GMT. The time now is 07:30 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2