The Boominator - another stab at the ultimate party machine - Page 233

Djimmi · 11th September 2011, 01:40 PM

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?

Saturnus · 11th September 2011, 02:33 PM

Quote:

Originally Posted by Djimmi

@ 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.

Djimmi · 11th September 2011, 07:30 PM

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.

rubennn · 11th September 2011, 08:55 PM

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

Motsey · 11th September 2011, 10:32 PM

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?

Saturnus · 12th September 2011, 01:16 AM

@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.

Kostecki · 17th September 2011, 01:23 PM

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

Saturnus · 17th September 2011, 04:04 PM

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.

Kostecki · 17th September 2011, 04:09 PM

Quote:

Originally Posted by Saturnus

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.

Saturnus · 17th September 2011, 06:01 PM

Quote:

Originally Posted by Kostecki

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.

11th September 2011, 08:55 PM	#2324
rubennn 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

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11th September 2011, 01:40 PM	#2321
Djimmi 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?

11th September 2011, 07:30 PM	#2323
Djimmi 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.

11th September 2011, 10:32 PM	#2325
Motsey 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?

12th September 2011, 01:16 AM	#2326
Saturnus diyAudio Member 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.

17th September 2011, 01:23 PM	#2327
Kostecki 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

17th September 2011, 04:04 PM	#2328
Saturnus diyAudio Member 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.