84Views6Replies

Author Options:

Are there any instructables on making speakers? Answered

I mean the actual speaker, not the enclosure because I've seen plenty of those. I mean the part that produces the actual sound. I've seen one that shows how to make a low quality one out of a paper cup and stuff, but not one how to make a good quality one.

Tags:speaker

Comments

The forums are retiring in 2021 and are now closed for new topics and comments.
0
Downunder35m
Downunder35m

6 years ago

I tried it once with a slavaged subwoofer speaker that had the membrane ripped into pieces.

First attempt was to make my own coil to fit inside the magnet and to add a hard but leight plastic speaker cone.

I could also re-use the soft rubber holding the membrane so I was quite lucky.

It worked but the sound was really bad and often with scratching noises.

Next try was to make my own coil on a custom membrane created with starch and fine fibreglass in a mould.

Sound was much better but still far from anything I would listen to for more than a few minutes, scratched even worse.
When I examined everything later on I noticed the scratching sounds and other distortions are caused by the magnet coil not being totally centered at all times.
If not all parts are perfectly matched the membrane itself swings and vibrates causeing the coil to get out of alignment.
As the speaker is the most important part when making a boom box I can only say it is not worth trying to make one.

Plasma speakers and active electrostatic speakers are quite possible to make in reasonable quality (within the limitations of the system itself).
I quite like the sound of a good pair of electrostatic speakers.
Due to their size and design you don't have one single point where the sound emits from but for big systems a few m² - and you can look through them.

0
steveastrouk
steveastrouk

Answer 6 years ago

What's the bass response of a big electrostatic like ? I always wanted to make a pair.

0
Downunder35m
Downunder35m

Answer 6 years ago

I never made or bought one for myself by a friend had several pairs that we would now call antiques.
The sound quality was just great compared to good standard type speakers especially the clearity.
The bass however is a slightly different story.
His biggest speakers produced quite a nice and soft bass, while the the smaller ones (around 60cm x 100cm) IMHO had problems with frequencies below 160-200Hz.
But as far as I know that is mainly because the lengh of the "stripes" in the speaker determine it's lowest possible frequency range.
The big speakers had stripes of different lenghs in them that you could see through the dust covers.
I think the best option for a fancy way of getting great sound is to use plasma speakers for the high frequencies, electrostatic ones for the mid range and a set up 10cm hard and soft cone bass subwoofers speakers in dedicated housings.
Keep in mind electrostatic speakers need correct placement to give good sound, putting them in a corner or close to wall can make them sound terrible due to the refelctions onto the stripes.

0
steveastrouk
steveastrouk

6 years ago

Look at electrostatic speakers too. They are a very accessible speaker technology.

0
mpilchfamily
mpilchfamily

6 years ago

Anything you make at home will be low quality regardless. Making a decent enough coil is doable. all you need is a decent round permanent magnet, a cardboard tube that can slide over the magnet with maybe 1mm to spare on either side and some thin magnetic wire. Measure out a length of wire that has a total resistance of about 8 Ohms and start wrapping it around the tube to create the coil. Use some hot glue to get it glued to the tube and finishing off the coil. But the key to desent sound reproduction is the size, shape and material the cone is made of. Not something you can do a decent job of making at home.