Introduction: Building a Passive Speaker for Your Phone

This is a very easy how to. You can do it for nearly every type of phone with a speaker.
You don´t need any electronics or solder iron.
It works and you can fill the room with sound of your mobile!

Step 1: What You Need

You need some copper plumbing parts.
A piece of wood for the base plate.
A paper funnel.
Some glue for paper and metal.
Some two component clay.
A brass screw

Step 2: Preparing the Paper Funnel

Cut the end of the paper funnel and glue the copper part on it.
Use wax stain to colour it. Wax stain gives the paper a wooden finish.
I stained it two times and I used a shoe brush to polish it.

Step 3: Preparing the Tubes and the Cradle for the Mobile

Use metal glue to glue the pipes together in that form you like.
For the cradle I used a piece of aluminium.
I drilled a hole in the aluminium profile so the sound of the phone will go trough the hole. See picture 2 and 4.
I flattened a piece of copper pipe so that it fits inside the Aluminium profile.
Than I used two component clay to fasten it.
At least I drilled a hole in the tube for fasten it on the stand.

Step 4: Mounting Everithin Together

I the glue is hardened you can mount it one the piece of wood you have chosen as the base plate.
Attach the phone and enjoy the music. :-)

With kind regards,

Horatius Steam

Step 5: An Absolutely Great Mod of This Instructables

The instructables member spratjack70118 send me a picture of his iPHONE horn.
This mod is amazing and very, very beautiful. 

I post the picture here.

I really love it.

Thank you for sharing!

With kind regards,

Horatius Steam


spark+master made it!(author)2013-10-21

I must say steam punk is interesting at times, but mostly just for giggles, but sometimes it is useful , this is actually useful and cool to look at.

I will say what I posted on projects I see like this, make two add earbuds as interface, stereo will be the benefit, possibly louder and clearer, as well.

I bow to your great instructable oh most honorable Horatius Steam

hkosak made it!(author)2013-08-05

You could cut a hole in the middle to stick a charger in and it would become an iHome!

Horatius.Steam made it!(author)2013-08-05

That´s a very nice idea. Even with the new cable type.

Thank you!

NOODLE%21 made it!(author)2013-06-09

Will definetly br trying this!

spratjack70118 made it!(author)2012-09-06

Here are the changes that I made to your instructable for my version:
The iPhone cradle I made of wood. I tried metal at first, and found that I didn't have the right tools to cut the somewhat precise hole for the copper tubing. I ended up cutting some 3/16" Luan plywood into pieces to glue together. First assemble the entire cradle - THEN mark, drill, and shape the hole. A Dremel tool and side-cutting drill bits work very well for those precise adjustments you may want to make. Also, I felt that it may be good to have the cradle in a material which is easier to remove/reposition, in the event that the speaker on the iPhone moves positions in future models. I did stain, and apply a couple layers of a clear polyurethane to protect it.

I used brass #8/32 screws to adhere the copper tubing to the base. On the underside of the wood base I recessed the holes with a spade drill bit so the heads of the screws would not be an issue. I used a tap to thread the holes in the copper. I did use Locktite to help assure the screws stayed in place.

I really enjoyed making this speaker, and was wonderfully surprised at how well it amplified my iPhone. I plan to make other designs in the near future. Thank you.
- Jack

Ceiling+cat made it!(author)2012-01-31

Very impressive work on the cone.  It really looks like wood.  That said, I would just like to point out that this isn't actually a "passive speaker".  A passive speaker is a speaker that is directly connected to the input without any sort of amplification.  This is more of an acoustic amplification horn. Just wanted you to know.

Other than that, great work!


Horatius.Steam made it!(author)2012-01-31


T-Hawke made it!(author)2012-01-15

Simple, Functional, Artistic, and its even Green! No batteries, for the speaker anyway. You just keep churning them out! Keep up the good work Sir.

Thank You for sharing.

adaptabodge made it!(author)2012-01-12

Is that right, you drilled a hole in your phone?
Is that really necessary?
If so, what precautions should be taken?

Horatius.Steam made it!(author)2012-01-12

No I don´t drilled a hole in my phone. The hole is still there, the speaker outlet.
I drilled a hole in the aluminium proile, that joined the speaker out of my android phone.

Sorry for the misunderstanding. :-)

With kind regards,

Horatius Steam

I will edit my instructable.....

Horatius.Steam made it!(author)2012-01-12

Instructable changed!

bricabracwizard made it!(author)2012-01-09

Hi Horatius, I enjoyed your instructable so much that I have created a link from my instructable ( to yours I hope you don't mind. I also noticed that you were featured at the same time as my instructable 'easy PCB holder - so weird. Kind regards, Michael

Dhunter1469 made it!(author)2011-11-21

I may try this for my iPod later! It looks so real and how loud is it.
PS: I live in South Africa and can make the cone insterd of buying it????

Horatius.Steam made it!(author)2011-11-21

Hi, you can use a piece of thick paper and roll a cone by yourselves. Use white glue and work in layers to produce a cone. The original cone has 8 layers.

You can follow this CLICK instruction.

With kind regards,

H. Steam

astrong0 made it!(author)2011-11-08

Did Theo Jansen ( tay-o yan-son) also influence you?

Horatius.Steam made it!(author)2011-11-18

I really like his work. This man is great! :-) Here is something more about hie work: CLICK

astrong0 made it!(author)2011-11-19

So glad you also know who he is.

vigfus made it!(author)2011-11-13

The look of the cone completely caught me off guard. I was feeling sorry for you for having to roll wood-veneer up like that (I know, i'm a hobby woddworker) until i saw the picture of the paper cone. Did you use any particular techniques for the brushwork or is the varnish you used simply magic?

Horatius.Steam made it!(author)2011-11-13

The magic is the wax stain. It gives nearly every surface a wooden finish.
You use the stain, wait a bit (10 - 15 minutes) then use the brush to give the surface the finish. Sometimes I have to use the stain for a second time.
Its a bit trying. :-)

With kind regards,

Horatius Steam

astrong0 made it!(author)2011-11-08

I have another comment, what if you made one that would probably be a bit to complicated so that you put the phone in a flap and then it folded into the body of it and still did the same thing but looked like a normal lp player.

MitBrown made it!(author)2011-11-08

I will be making this tonight. ill update with how it turns out!
after i try the paper cone, im going to see if i cant spot weld together a replica phonograph cone to fit it.

agis68 made it!(author)2011-11-08

really a nice wedding of the high end technology with the steam victorian age....I love it.....5^n/5

clockworkdoorbell made it!(author)2011-11-08

Really lovely bit of work, I put up an instructable in a similar vein last year, but I cannot compete with your aesthetics.

aBugBot made it!(author)2011-11-08

elegant and effective work

wallerps made it!(author)2011-11-07

I have a question about the Wax Stain. Is this a product used in wood working something like a Minwax product?

Thank You,

Horatius.Steam made it!(author)2011-11-07

God Morning from Germany, I used this product: CLICK  this a stain, not a protective wax.

H. Steam

tharper made it!(author)2011-11-07

If nothing else, it looks incredible. Makes a great phone stand

Mrs+c3po made it!(author)2011-11-07

Nice Nice Nice!!

wcgems made it!(author)2011-11-07

Very neat idea... may have to give it a try.

Thereyouhaveit made it!(author)2011-11-07

Ahh , great idea .
Thankfully isn't a stupid dog on a old gramophone ( if you watched top gear , you know what i mean )

Horatius.Steam made it!(author)2011-11-04

In Germany you can buy it in nearly every store for "hobby" equipment. There is an on line store as well in Germany: HERE   
Or make it: HERE  if you make a basic form as shown in the "HowTo" you can use water based glue and pieces of an old newspaper to make thicker.

With kind regards,

Horatius Steam

janger made it!(author)2011-11-03

Great job, your work looks awesome! Where does one find a paper cone like that??

mdog93 made it!(author)2011-11-03

Did you make or buy the paper cone?

Horatius.Steam made it!(author)2011-11-03

I bought it.


H. Steam

mdog93 made it!(author)2011-11-03

Where can you buy such cones?


anjaliv made it!(author)2011-11-03

amazing very much interesting invention 

zachery980 made it!(author)2011-11-02

it looks steampunkish

Junophor made it!(author)2011-11-02

Dear Sir Hortius Steam

It is really unbelievable this creativity
Just a very good work indeed
Take a bow!!
Yours Aeon Junophor

Winged+Fist made it!(author)2011-11-02

Amazing design! True work of art! The wax stain really gives a beautiful wood-like finish to the paper funnel. I may use this for future projects... Thanks!

About This Instructable




Bio: I am a home constructor, an inventor and a dreamer. If you ask me who guided me and who inspired me then this people comes ... More »
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