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small boom box

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alex. View Drop Down
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    Posted: 08 November 2013 at 10:25pm
I've asked a similar question on here before but i need to clarify a few points  first of all
i am aiming to build a smallish boombox for around the £50 mark not including case and from what
i've read a pair of these would work quite nicely http://%20www.europe-audio.com/Product.asp?Product_ID=5536 - http://www.europe-audio.com/Product.asp?Product_ID=5536 my second question is would i need a pair of tweeters with them
suchas these http://www.europe-audio.com/Product.asp?Product_ID=7640 - http://www.europe-audio.com/Product.asp?Product_ID=7640 however this would be above my budget. I was looking something like this for the amp http://www.ebay.co.uk/itm/2-X-50Watt--D-Audio-Amplifier-TDA7492-19V-adapter-/111140230182 - http://www.ebay.co.uk/itm/2-X-50Watt-Class-D-Audio-Amplifier-TDA7492-19V-adapter-/111140230182 any thoughts on it ? and would i need a crossover with and without the tweeters ? also any thoughts on powering it as i would like it to be reasonably portable a few hours battery life is what i would be looking for.
Thanks for any help you can give.
Alex.


Edited by alex. - 08 November 2013 at 10:27pm
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DANofCUS View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DANofCUS Quote  Post ReplyReply Direct Link To This Post Posted: 09 November 2013 at 10:07am

I think you should buy from a uk supplier if you're in the UK 

there is amp suppliers in UK , there is lithium ion battery suppliers in UK  , there is also speaker driver suppliers in UK  
 
and here is a link for crossovers
 
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lutkeveld View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lutkeveld Quote  Post ReplyReply Direct Link To This Post Posted: 09 November 2013 at 11:24am
You could cut cost by buying a ta202x board. The monacors reach quite high so tweeters aren't essential but they are preferable. The tweeters you linked can be cross-overed by a cap in serie.
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alex. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote alex. Quote  Post ReplyReply Direct Link To This Post Posted: 11 November 2013 at 10:21pm
I've seen some threads by KWB75 and was wondering whether he or someone
else could advise on the volume and port size as i need to start
cutting the wood by next week and have been trying to
calculate sizes but the figures i get seem inconsistent i get 22.8l 
from winISD but when i looked at this thread he said a target of 7.5 http://forum.speakerplans.com/my-boombox_topic62315.html so i
am now well and truely confused i am using this amp
http://www.ebay.co.uk/itm/MKIII-Tripath-TA2020-PCB-25watt-Class-T-amplifier-UK-/271274659476?pt=UK_AudioTVElectronics_HomeAudioHiFi_Amplifiers&hash=item3f293ace94
and two monacor sp60/4, still considering the tweeters. Any help at this stage would be really appreciated.
Thanks
Alex


Edited by alex. - 11 November 2013 at 11:01pm
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