passive speaker for your smart-phone

Download and make this Smart-Phone Passive Speaker for free!

There are two designs of base for this model. The base you choose depends on the type of phone youuse. If your phone has a loudspeaker along its bottom edge use the iPhone base. If the loudspeaker isanywhere on the back of the phone use the Galaxy base.

Print out the parts of the base that you are using onto thin coloured card. Any coloured photocopier cardshould be ideal. Choose two complementary colours of card.

This project is the Mk II new and improved version of the Phono-Horn project also available onInstructables here. (http://www.instructables.com/id/Phono-Horn-Free-Sound-Dock-for-your-Smart-Phone-t/)It was originally published on www.robives.com (http://www.robives.com/blog/passive)

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About This Instructable

Posted:Oct 17, 2013

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The Whirlwind - An iPhonehorn speaker and stand thatfits in you wallet! (/id/The-Whirlwind-An-iPhone-horn-speaker-and-stand-t/)

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Passive Speaker for your Smart-Phone by robives (/member/robives/)

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Passive Speaker for your Smart-Phone http://www.instructables.com/id/Passive-Speaker-for-your-Smart-Phone/

1 of 14 23/10/2013 13:44

passivehorn.pdf (/files/orig/FVJ/UPNB/HMVJCEXO/FVJUPNBHMVJCEXO.pdf)1 MB

Step 1: Making The Horn

The horn is the same for both base designs. Print out the horn parts page twice on complementarycolored card. Score along the dotted and dashed lines then carefully cut out the parts.Fold over the end tabs to make a triangular section tube on each of the eight horn pieces. This givesstrength and rigidity to the open end of the horn.

Step 2:

Pair up the horn pieces and glue together the first tab as shown. Match pieces together so that you havetwo pairs with extra tabs and two pairs without.

Step 3:

See More (/tag/type-id/?q=)

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(/files/deriv/FHI/VBTQ/HMVJCEX5/FHIVBTQHMVJCEX5.LARGE.jpg)

for-iPhone/)by JPro (/member/JPro/)

(/id/Hyperbolic-

Hyperbolic Spoon iPhoneAmplifier/Stand(/id/Hyperbolic-Spoon-iPhone-AmplifierStand/)by Renard_Bleu (/member

(/id/Bluetooth-

Bluetooth Cello, Junk makingmusic again! (/id/Bluetooth-Cello-Junk-making-music-again/)by monkeywork (/member

(/id/Passive-

Passive Amplifier For iPhoneOr Other Music Player(/id/Passive-Amplifier-For-iPhone-Or-Other-Music-Player/)


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2 of 14 23/10/2013 13:44

Glue the pieces together by the first tab in this alternating pattern.

Step 4:

Roll round and glue down the remaining first tab to make a tube.

Step 5:

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3 of 14 23/10/2013 13:44

Work your way round the second row of tabs gluing them down as accurately as possible.

Step 6:

Work your way to the end of the horn gluing one row of tabs at a time taking care to keep everythinglined up accurately.

Step 7:

Glue the horn end into place. Set the horn to one side and start work on the base.

Step 8: Galaxy Base

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4 of 14 23/10/2013 13:44

This base, has specific markings for the Galaxy S2, S3 and S4 but is easily adaptable for all phoneswhere the speaker is on the back face of the phone.Glue together the two sides as shown.

Step 9:

Assemble the square section cross piece.

Step 10:

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5 of 14 23/10/2013 13:44

Assemble the two back supports and the phone stand.

Step 11:

Glue together the long horn tube as shown.Fold the two end sections in and glue them down being sure to keep everything lined up and not twisted.

Step 12:

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6 of 14 23/10/2013 13:44

Glue the two back pieces to the grey glue areas on the stand sides. Press the horizontal square tubeinto the slots on the side pieces. There is no need to glue it, friction will hold it into place and being ableto lift it in and out is handy when you are cutting holes in the tube.

The base is designed to be usable with a wide range of phones. If your phone has a speaker towardsthe bottom edge of the phone back like the Galaxy S2 and S4 then cut out the hole in the top centre ofthe horizontal square tube. Line up the long horn tube with that hole and glue it down (Left picture). Youcan then cut a hole in the horizontal tube which matches the position of the speaker phone.

If your phone has a speaker anywhere else on the phone back then there is no need to cut into thehorizontal tube at all.

Position the long horn tube side to side on the stand so that it crosses the position of the phone'sloudspeaker and glue it into position (right-hand picture.) Cut a hole in the long horn tube so that is linesup with the phone's speaker.

Step 13:

Glue the phone stand piece into place.

Step 14:

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7 of 14 23/10/2013 13:44

Fit the horn to the stand. It is a taper fit so there is no need to glue it. Being able to take it apart is handyfor storage. This model is set up a Samsung Galaxy S4.

Step 15: Making the base for iPhone

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8 of 14 23/10/2013 13:44

Not just for iPhones, this base will work for all phones where the loudspeaker is along the bottom edgeof the phone.Fold up and glue the long horn tube as shown.Fold the two end sections into place and glue them down.

Step 16:

Assemble the phone stand piece as shown in the first pictureGlue the tab of the long horn tube to the cross piece......then fold it over and glue it down as shown.

Step 17:

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9 of 14 23/10/2013 13:44

Assemble the two sides.

Assemble the two triangular section cross pieces.

Glue the cross pieces to the grey areas on the back of the side pieces.

Step 18:

Glue the long horn piece into place gluing it to the two side pieces and the top cross piece.Position your phone on the stand and mark where the speaker meets the stand. Carefully cut out a holein the triangular stand piece with a sharp knife.

Step 19:

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10 of 14 23/10/2013 13:44

We have a be nice comment policy.Please be positive and constructive. Rich Editor Add Images Preview Post

(/member/neodymium/)

Oct 21, 2013. 3:29 PM Reply (CMD18KIHMWVZWUN)

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12(/member/robives/)

Oct 22, 2013. 11:14 PM Reply (C8IT1ZDHN2BKHFZ)

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Fit the horn to the stand. It is a taper fit so there is no need to glue it. Being able to take it apart is handyfor storage. Position your phone on the Passive Speaker and crank up the volume!

This helps us reduce spam.

neodymium (/member/neodymium/) says:

Can you do this with regular printer paper, or do you need to get something heavier? If so, whatweight?

robives (/member/robives/) (author) in reply to neodymium

I don't think it would work withpaper. Use thin card 230 gsm / 67lbPhotocopier card is perfect as it willwork in most printers.

ilovecraft (/member/ilovecraft/) says:

how much is the sound amplification/ increase in loudness? nothing technical.. just approx.

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11 of 14 23/10/2013 13:44

Oct 21, 2013. 11:01 AM Reply (CKSGUFZHMVJPIKZ)flag

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Oct 21, 2013. 11:20 AM Reply (C0N6MS1HMVJDMRU)

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Oct 20, 2013. 7:50 PM Reply (CWZ9OLEHMVJHCTL)

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Oct 21, 2013. 8:57 AM Reply (COXI3XUHMVJDLAH)

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robives (/member/robives/) (author) in reply to ilovecraft

It is not a huge amount but it doesmake the phone sound muchricher with better bass tones andless tinniness. There is a youtubevideo of the previous version inaction here:http://www.youtube.com/watch?v=pVAx1f3y4kE

xenobiologista (/member/xenobiologista/) says:

I tried the original version of this and it didwork well to project the sound, but it wouldkeep falling over whenever there wasn't aphone on it. Can this version stand on itsown?

Xamu (/member/Xamu/) in reply to xenobiologista

I can't directly answer your questionso I'm just postulating on an optionin either case; If this version doesfall over, I think that if you hot glue acouple of thick metal washers ornuts in the bottom back corner (the90° angle) of both of the triangularbase pieces it will add a lot ofstability.

In addition to stopping it from tippingforward with the phone removed (ifthat is still a problem), weights inboth of the back corners wouldprobably also help keep it fromaccidentally getting bumped over -with or without the phone in place.

robives (/member/robives/) (author) in reply to Xamu

Check out step 14http://www.instructables.com/id/Passive-Speaker-for-your-Smart-Phone/step14/null/You can see it free-standing withoutthe phone

robives (/member/robives/) (author) in reply to xenobiologista

Yes, this version is specificallydesigned to stand up on its own.

spark master (/member/spark+master/) says:

After gluing up several coats of varathane will stiffen it more, or varathane all the printed sheets thencut glue and give it a coat or two. The extra of the varathane (or shellac, which I believe is a harderfinish), may just make the paper more bouncy and have cleaner or louder sound.

Make two put an ear bud in each for more sound from an MP3 player.

this is a very cool instructable

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12 of 14 23/10/2013 13:44

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THANK YOU for thisbiodegradable speakertutorial!

askjerry (/member/askjerry/) says:

Nicely done! I have seen several other variations... but each was designed for a specific phone...typically the iPhone. I like the way you thought about making it fit a wide variety of devices. very nicelydone, and a great Instructable too!

SonicLoverSeth (/member/SonicLoverSeth/) says:

cool! not to sound dumb, but can the craft bemodified for a tablet?

padeutsche (/member/padeutsche/) in reply to SonicLoverSeth

Just modify the base design ormake it larger to support the iPad.

padeutsche (/member/padeutsche/) in reply to padeutsche

Your not dumb for asking aquestion, you are dumb when youdo not ask questions.

Marcos El Malo (/member/Marcos+El+Malo/) in reply to SonicLoverSeth

That's not a dumb question. I'd liketo build a sound horn for my ipad,too.

robives (/member/robives/) (author) in reply to Marcos El Malo

I'll have a look and see if I canmake an iPad version.

padeutsche (/member/padeutsche/) says:

Did you all know that you can make a passive speakers out of the top of pop bottles, the best one thatseems to work best is Coke, and they look like an old style passive speaker, too.

KROKKENOSTER (/member/KROKKENOSTER/) says:

The only passive amplifier I know I like thedimentions as the horn must be logarithmic

thegreatkoua (/member/thegreatkoua/) says:

wonderful a cheap speaker for the poorpeople thank you

rimar2000 (/member/rimar2000/) says:

Beautiful horn!


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13 of 14 23/10/2013 13:44

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14 of 14 23/10/2013 13:44

passive speaker for your smart-phone

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