The Boominator - another stab at the ultimate party machine - Page 233 - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 11th September 2011, 02:40 PM   #2321
diyAudio Member
 
Join Date: Sep 2011
Cool. Thanks for your answers, guys.

@ rubennn,
Could you elaborate on the problems related to sound quality and phase problems? How is it experienced and how bad is it?
  Reply With Quote
Old 11th September 2011, 03:33 PM   #2322
diyAudio Member
 
Saturnus's Avatar
 
Join Date: Jun 2005
Location: Copenhagen, Denmark
Quote:
Originally Posted by Djimmi View Post
@ rubennn,
Could you elaborate on the problems related to sound quality and phase problems? How is it experienced and how bad is it?
It's kind of obvious isn't it? You have stereo channels playing opposite ways, so basically there'll be no point with good stereo effect (in an outdoors environment). It's one of the fundamental drawbacks of the half-boominator discount solution.
  Reply With Quote
Old 11th September 2011, 08:30 PM   #2323
diyAudio Member
 
Join Date: Sep 2011
Indeed that does seem very obvious when you put it like that. I'm new to thinking about even the simplest of physics of sound though so please bear with me.
I was hoping that the problem you mention could be solved (partly at least) by simply placing the Boominator at the right angle but I guess that's not the case.
The main reason why I was interested in the half-Boominator solution was portability. But since you're making a good point I guess I'll reconsider my first impulse which was to sacrifice sound quality for portability.
  Reply With Quote
Old 11th September 2011, 09:55 PM   #2324
rubennn is offline rubennn  Denmark
diyAudio Member
 
Join Date: Jun 2010
Location: Copenhagen
If you're a perfectionist, go build the full boominator. It sounds incredible even with shitty piezos like the KSN-1005A replica versions. It's worth all the darn money to say the least.

However, if you like to drag the boombox around a lot you might want to consider building the half boominator - that said, you will have more poor sound quality.

One thing to keep in mind though. Most people don't care about sound quality when they're drunk and at a party as long as the music is not utter crap like the boomboxes you buy from an electronics/hifi retailer. I think my half boominator delivered just fine at this year's festival... But... I'm going full next year. Mainly to have more output.

Like I said. It depends on what you like and prioritize. Overall I personally think that the half boominator doesn't come near the perfect full boominator.

And now I don't think I will elaborate more on that front
__________________
Wohoo...Boominator 2012
  Reply With Quote
Old 11th September 2011, 11:32 PM   #2325
diyAudio Member
 
Join Date: Sep 2011
Hi I'm going to try and build a stand alone system/ boominator style and would like to know what the best battery to use would be?

I would be using the Lepai LP-2020A+ amp and considering using a 12V 7Ah SLA battery - not sure about speakers as of yet but considering using the 6x9 speakers I have from an old car and maybe adding some piezo tweeters. I would like to know roughly how long I can expect this possible set up last before the battery dies?

Also saturnus said he used "2 standard 12 Volts 7 Ah SLA paralleled and stacked on top eachother" - how would you charge these, Would you have to separate them and charge them one by one? What charger did you use?

I was considering using a cheap charger and putting it within the "box" with everything else and make a connection on the side of the box to plug the power cable in or maybe put that in as well and make a door to take it out when required. - has anyone done anything like this?
  Reply With Quote
Old 12th September 2011, 02:16 AM   #2326
diyAudio Member
 
Saturnus's Avatar
 
Join Date: Jun 2005
Location: Copenhagen, Denmark
@Djimmi, despite my own reservations, don't be fooled. Even a half-Boominator will still have better sound quality and able to play louder than any commercially available boombox at all, bar none.
  Reply With Quote
Old 17th September 2011, 02:23 PM   #2327
diyAudio Member
 
Join Date: Apr 2011
Location: Roskilde
I've had a look through the thread and have found some different piezo. I know the whole area of piezo's are a bit different since the proper ones are very hard to get and the rest is pretty shitty

So i wanted to know which of these are the least shittiest?
TWEETERS SPEAKERS 6 PACK PIEZO PA DJ CLUB | eBay
HORN BUBBLE TWEETERS 3.5" 10 PACK PIEZO PA DJ (NTX3711) | eBay
QLM-1005 - Ljudia - Multimedia Hemelektronik Karaoke PA anläggning DJ utrustning Ljus utrustning
  Reply With Quote
Old 17th September 2011, 05:04 PM   #2328
diyAudio Member
 
Saturnus's Avatar
 
Join Date: Jun 2005
Location: Copenhagen, Denmark
The bubble horn piezos are the recommended tweeters, and they are excellent tweeters.

The two others are crap, and it doesn't matter which one you choose.
  Reply With Quote
Old 17th September 2011, 05:09 PM   #2329
diyAudio Member
 
Join Date: Apr 2011
Location: Roskilde
Quote:
Originally Posted by Saturnus View Post
The bubble horn piezos are the recommended tweeters, and they are excellent tweeters.

The two others are crap, and it doesn't matter which one you choose.
Well fair enough. Easy choice then.
Thanks.
  Reply With Quote
Old 17th September 2011, 07:01 PM   #2330
diyAudio Member
 
Saturnus's Avatar
 
Join Date: Jun 2005
Location: Copenhagen, Denmark
Quote:
Originally Posted by Kostecki View Post
Well fair enough. Easy choice then.
Don't know if it's an easy choice. It's confounded by the fact that you can't actually buy the bubble horn piezos.
  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



New To Site? Need Help?

All times are GMT. The time now is 02:56 AM.


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