Cheap Speaker RuckSack Thats LOUD

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http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/

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Cheap Speaker RuckSack Thats LOUD!by superrob on July 18, 2009

Table of Contents

License: Attribution Non-commercial Share Alike (by-nc-sa) .............................................................................

Intro: Cheap Speaker RuckSack Thats LOUD! .......................................................................................

step 1: Materials .............................................................................................................

step 2: Wiring ...............................................................................................................

step 3: Construction ...........................................................................................................

step 4: Finishing .............................................................................................................

step 5: Done! ................................................................................................................

Related Instructables ........................................................................................................... 1

Advertisements ............................................................................................................... 1

Comments ................................................................................................................... 1
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License: Attribution Non-commercial Share Alike (by-nc-sa)

Intro: Cheap Speaker RuckSack Thats LOUD!I'm too young really to remember old skool 1980's Boomboxes and 1990's field raves, but not too young to admire them :D today's equivalent of the boombox it seempeople walking down the street holding their mobile phones quietly playing some distorted, poor quality and bassless tune. Or l ittle portable I-pod speaker dockingstations that are ok but not particularly portable or loud. Wear are the big, loud, anti-social I want you all to hear my music weather your stood next to me or 100 feetaway systems! Surely rather than getting quieter and smaller portable music systems should have gotten louder and bigger! After looking around and not finding anythsuitable already being produced I decided to make my own, mwhahaha!

Right, so here is the spec...

LOUD, because you cant have a quiet rave!

Portable, and I don't mean portable as in can be moved from one place to another. I mean portable as in can be comfortably carried on a bike, through a field, droppefew times etc.Durable, for similar reasons aboveRechargeable, no one wants to spend a fortune on batteriesEasy on the eye. ahahaha.

So we have the plan, time to collect some materials!

step 1:MaterialsNow I'm a student, so the budget I had for my boombox was close to 0.00. Armed with my electronics GCSE, 2 years of studying design and the tools in my dad'sgarage, lets get started!

Materials

I was pretty lucky with the materials I found and the price I got them for. These were collected from car boot sales and my own home and were...

A set of 2.1 logic3 soundstation2 speakers. I have a set of these already so knew the sound quality was good, bassy and loud (supposedly 300w? but I'm not sure). Thwere bought second hand for 2.50 which was a bargain! They were fairly beaten up, infact it looked like someone had burnt a hole through the sub?? (What do youexpect for 2.50) however I tested them and they worked great, woo!

My old school rucksack. Cost 0.00. It had seen many, many school years and was still in good nick so definitely strong enough for my needs!

Wild things rechargeable PSone battery pack. Bought second hand for 2.00 (looked new) and in working order!

Wood flooring. Cost 0.00 as it was left over from my living room after we replaced it for carpet. Go recycling!

Sofa foam "borrowed" from an old sofa we were throwing out.

...and that's our shopping over!
http://creativecommons.org/licenses/by-nc-sa/2.5/


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Image Notes1. Burn mark / hole???2. im sure that wasnt supposed to fall off

step 2:WiringOk, the next step was to gut the speakers and battery pack and work out how to put them together, or see if they even worked together. The speakers ran from 15v anthe battery pack produced 12v. Lucky just wiring the speaker to the power pack worked great and despite the less voltage produced awesome sound! Now using thewood flooring I will build a case for this mass of wire, speakers and batteries!
http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step2/Wiring/


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Image Notes1. Sub2. Tweeters3. Amp circuit4. 12V Lead acid battery5. Power / charging / fuse circuit

step 3:ConstructionNow this is a portable speaker bag, and as said before by portable I don't just mean movable, I mean TOUGH! I.e. it can be carried on a bike, through fields, occasiondropped or knocked etc. now that is portable!

I always find pictures better than words so I took lots of pictures right the way through the building process to save me writing up too much. Alot of sawing, sanding, wogluing, glue gun gluing and screw screwing (ahaha) was involved and the result was not too bad if I do say so myself. It feels pretty indestructible. Take alook at the piand enjoy :)
http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step3/Construction/


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Image Notes1. Tweeter Right2. Tweeter Left3. Sub4. Battery5. Charging / Power / Fuse circuit6. Sub tube7. Amp circuit8. Controlls

step 4:FinishingRight so the speakers are built, working and sound great! Now to put them in a rucksack!

The speakers were measured so do fit in the bag (just!). they were then padded on all sides with the sofa foam and double padded on the side that will be on your bacwhen carrying them, for added comfort :) I painted some wire mesh from an old waste paper bin yellow and cut it / glued it to cover the speakers to protect them whenbeing moved / used. The pocket was removed from the front of the bag as it got in the way and holes were roughly cut for the speakers and controls. These holes werthen neatened up with a sewing machine. Once in position in the bag the speakers were glued in place.

As a finishing touch I cut some yellow fabric off of an old drinks advertisement banner I had lying around and glued it to the bag bordering the controls and speakers.


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step 5:Done!And that's it! Here are some pictures of the final product and a there will be a high-quality video of it doing its job once i have edited it.

This is my first instructable and I feel it has gone very well. Its meets every spec I had and works great. Just the other day I was sitting in a field with my mates on a hosummer's day blaring out the tunes! The videos do not do the sound quality this thing produces any justice. I have been thinking of how I can show this but until then ywill just have to believe me ahaha.

So yes, hope you enjoyed my story and thankyou for you time.

Any comments, suggestions, questions are very welcome?

superrob.

UPDATE

Here is a video of the final Speaker RuckSack. It is slightly better quality than my other videos but again the microphone of the camera lets the RuckSack down. Enjoy
http://www.instructables.com/id/Cheap-Speaker-RuckSack-Thats-LOUD/step5/Done/


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O and if you like my instructable VOTE FOR ME!


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Image Notes1. Wear the 12v charging adaptor attaches.2. 3.5mm Headphone Jack3. ...Possible Space For Glow Sticks? ahaha

Image Notes1. Power and Volume2. BASS!3. Power LED4. Charging LED


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Comments

22 comments Add Comment

Alex370 says: Sep 16, 2010. 12:15 PM REPWow, thats fantastic! The sound is good too, Id like to try the same but id replace the tweeters with midranges. good job mate

lomn says: Aug 3, 2010. 9:06 PM REPHow do you charge the battery? with the regular power input to the speakers or what

redeyedninja says: Jul 9, 2010. 3:08 PM REPI'm thinking of making a rucksack sound system soon. Will make the enclosure design sealed to keep it simple, as reflex enclosures are harder to design,especially when you don't know the full TS parameters of the speaker. The shell will be made of 15mm birch plywood with pine bracing in the corners to saweight. As stuff like mdf is heavy. Speakers will be: 2x Electrovision 5.25 inch dual cone fullrange rated 45w rms, 63hz-20khz, sensitivity at 1w/1m is 92db.2x 5.25 metal speaker grilles with clamps. Amp: new version of Tripath Class T Amp TA2020 in a case with screw terminals instead of spring clips that thewires could easy disconnect from and short. Amp takes DC 12V~14V 5A. Batteries/battery: I might use a deep cycle lead acid battery. So I'll probably go fovented lithium-ion batteries and a suited safe charger. So I'm pretty certain I'll just need a 5A fuse on the battery. As the amp is 5A. Probably will need asafety circuit too to prevent overcharging the batteries. Could the OP and jamesjamesjames give me more information on how to connect up either a sealelead acid battery and charge it safely,please. Or vented lithium-ion cells. Thanks

jamesjamesjames says: Jul 5, 2010. 12:38 PM REPMade one a while back with a 12v battery from one of them kids electric cars. a bit rougher, doesn't look as nice as yours =)

thumpstarkid says: Mar 10, 2010. 12:46 PM REPhi

i am going to make one of these i have the sofa fluff the laminate flooring and the sounsstation but the ps1 charger i don not have could you tell me if it willrun on one of these 12v lead acid battery that you have in the pic because they are 12v and you said that the speakers are 15v

" The speakers ran from 15v and the battery pack produced 12v. Lucky just wiring the speaker to the power pack worked great and despite the less voltagproduced awesome sound!" also you say "12v. Lucky just wiring the speaker to the power pack worked great" does this mean you did not use the am

just the speakers(tweeters) sorry im new to this

superrob says: Apr 20, 2010. 6:09 AM REPHi thumpstarkid, although the speakers do run on 15v the 12v lead acid battery works fine, it might not go as loud but the sound level is still prettyimpressive. Also i did use the amp the circuit is abit like battery - amp - speakers

hope this helps.
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MichaelWhyte says: Apr 6, 2010. 10:16 AM REPHAHAHA Thats uncanny, couple o years ago also needed a portable soundsystem for..ahem...gatherings, used the same logitech soundsystem ihad for mps2, and the same wire mesh stuff but mines was gold, i was a bit too rough though cus i had to rebuild mine about 10 times due to kicking spilling etc wheunder the influence hahahahah, good news though still got it and it still works, although the only original parts now are the power/bass switch and the sub

ben1994 says: Nov 20, 2009. 2:49 PM REPhi superrobcan you do me a favor can you email me a copy of your own instructions please it would be greatful along with your videos if it is not to much to ask m8because i love your idea and i think it would be nice to make or get 1 for my brother for xmas dont you think thanks if you could do it a.s.a.pmany regards [email protected]

Yerboogieman says: Oct 12, 2009. 6:07 PM REPSweet bag man. I probably won't do this, every time i wire something for my bike, i blow an amp.

Finnl says: Aug 22, 2009. 2:44 AM REPplace an on/off switch on the straps.. but its very nice;)

tuxedo1994 says: Jul 25, 2009. 7:07 PM REPgreat Instructable! but could you be a bit clearer HOW to wire the things to geather. like what the battery is attached to, what type of out put the speakershave and how this works with an ipod. all I'm saying is can you put in a couple of more steps on assembly. but other wise GREAT job! :)

superrob says: Jul 30, 2009. 7:02 AM REPHi tuxedo1994, Its true I have not been very clear on the actual wiring so i will explain. This was actually very, very simple. I cut the end off the wire tha

would go from the battery pack to the PSone and just soldiered it to wear the speakers power adaptor would fit to the speakers. That was i t! almost tooeasy :S Thanks, superrob.

tuxedo1994 says: Aug 17, 2009. 8:09 AM REPOH! that makes sense i had a computer speaker and i was having trouble on figuring out where the power would come from. so ultimally get a battequal to that of witch the speaker intakes and just attatch the positive wires of the power cable to the battreys positive out put. and same withnegitive. thanks so much! tuxedo1994

Phoghat says: Jul 23, 2009. 3:28 PM REPVery nice work and I think I'll build something similar. Why did you have the sub facing forward and the tweets firing off to the sides? Methinks it would bebetter the other way round.

superrob says: Jul 30, 2009. 6:57 AM REPHi Phoghat, Sound wise it probably would be better the way you suggested however the width of the Sub compared to the width of the Rucksack mean

either had to face the back or the front. Thanks, superrob.

sardines454 says: Jul 23, 2009. 9:01 AM REPI've always wanted to do this and it looks like you've done a great job. What is the battery life is at a fairly decent volume?

superrob says: Jul 30, 2009. 6:54 AM REPHi sardines454, I have had it running at pretty much full volume for at least 3 hours with no loss of quality but have yet to use it till it completely runs flaThanks, superrob.

porcupinemamma says: Jul 27, 2009. 9:17 AM REPmwhahaha!...love it ;0)

JuxtaposedIToldYouSo says: Jul 27, 2009. 7:04 AM REPI am going on a backpacking trip to Colorado in a few weeks; I'm definitely going to have to mod my backpack like this. Great Idea!!

LoganSix says: Jul 24, 2009. 6:39 AM REPNice job. A few companies still sell boomboxes, but they are limited. I have one that I want to add MP3 capability to at some point. So many ideas, so littletime to do hobbies.
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12/12

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Oroka says: Jul 23, 2009. 5:53 PM REPThis is good i f you are taking it somewhere to use, but I HATE HATE HATE HATE HATE people who walk around with little speakers blaring rap or anymusic for that matter. I dont want to hear your music! USE HEADPHONES!

corey_caffeine says: Jul 23, 2009. 12:01 PM REPnice speakers
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Cheap Speaker RuckSack Thats LOUD