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loudspeakers

2,616 subscribers a community for 3 years, 5 months

last post 158 days ago [+]

DIY Loudspeaker building overview.

If you have complex questions about designs not covered here or about re-engineering someones project, the questions would get better answers at /r/audioengineering.

Speaker information not taught in college electronics class can be found here. They cover the basics. Here you will find tricks of the trade that require years of speaker building to learn. The "Single sided 2 way system" should have been a lab class project but wasn't. It's designed to teach the most important information in the shortest amount of time.

This compilation of loudspeaker building information and parts sellers is primarily for home speakers. If you have questions about anything I've said you can use the message the mods button to send me a private email, I will try to get you a good answer as soon as I can.

I want people to enjoy their music as much as I enjoy mine. The stockholders of speaker parts builders and sellers don't care if you ever build a good pair of speakers, they just want your money, over and over, if they can. There is a lot they can do to fool you. The gasket on most woofers is on the front side, it should be on the rear side of the basket. Yes, it makes a difference. Most capacitors are well over 250 Volts, 100 Volts sounds best. The cap makers will never tell you to not mix the voltages of caps in parallel. If you do it can ruin your speakers fidelity and you will think you made a mistake and not have a clue as to what went wrong.

There are no schools for loudspeakers like there are for violins etc. Many books are as confusing as they are helpful. This site is intended to be like a school and provide common and hard to find information, to build a working pair of above average speakers. Much of the information in the charts and graphs focuses on the information needed for solving problems before they happen, and for making better informed decisions.

My tech school spent two days of lecture on loudspeakers, they should have spent two weeks or more because there is more than enough material to learn to fill two weeks of lecture. http://www.nutshellhifi.com/library/speaker-design2.html, sheds a lot of light on how much is NOT taught to students.

Copy this link, https://www.reddit.com/r/loudspeakers/, to paste in and search the Way Back machine, (https://archive.org/web/web.php) many posts and chart links can be found there. Add more there if you want to. I expect that the Way Back Machine will outlast Imgur and Reddit, I hope I'm wrong. Copy and paste the sidebar to a safe place for future reference, just because it is a good idea.

The following links go to charts, graphs and short essays. Click twice on the pics to get an enlarged view.

How speakers make sound: http://animagraffs.com/loudspeaker/

Single sided 2 way system http://imgur.com/a/JTEUE

Vas and cabinet volume http://imgur.com/vwc9nsI

Liters conversion http://imgur.com/W9QrFCQ

Speaker cabinet building tips http://imgur.com/a/6oPl2

Basic Crossover schematic http://imgur.com/FmOaKCx and SPL correcting resistors schematic http://imgur.com/nElTRqy

SPL correcting resistors chart http://imgur.com/a/tD6vY http://imgur.com/3YWuHxO (old)

How to find SPL single resistor reducer sizes. http://imgur.com/a/if1jq (L Pad calculator: http://www.apicsllc.com/apics/Misc/filter2.html)

SPL and Loudness http://imgur.com/4UyDXRW

Crossover Orders http://imgur.com/Dfy9BSW

Crossover Slopes http://imgur.com/MlOfkkf

Bessel is Better http://imgur.com/j43ZdDa

db/loudness/power graph http://imgur.com/a/guvyx

Decibels and Voltage and Power distribution http://imgur.com/Tfrqd1q

Damping http://imgur.com/0DCvJbY, see more here:https://www.reddit.com/r/loudspeakers/comments/2drc3g/new_3way_projects/

Elves Hair http://imgur.com/AINC8Hx now called Angle Hair http://www.hificollective.co.uk/catalog/mundorf-twaron-angel-hair-wadding-p-7701.html

Amps, Ohms, Wire size http://imgur.com/Q5StmUH

Coils http://imgur.com/mxZLD1m

Coils, pics http://imgur.com/nyjOFb1

Coil unwind chart http://imgur.com/a8FIqMW

Coils series aiding http://imgur.com/a/JWyF1

Good frequency response looks like this

http://imgur.com/yo35YSM

Beaming http://imgur.com/iilI4Gk

Fatiguing http://imgur.com/RXbCmGI

Testing your speakers http://imgur.com/OQWW6Vb

Speaker builders argue all the time http://imgur.com/a/375RJ

Charts are tone deaf http://imgur.com/v7V7bjB (Link: http://www.nutshellhifi.com/library/speaker-design2.html)

Loudspeakers are a flawed technology http://imgur.com/a/t9s4v

1970 sub bass http://imgur.com/joSjAeF

Bass loss compensation circuit http://imgur.com/qjK7hsg

Someone should make these caps http://imgur.com/FVPyE0K

My capacitor bread board

http://imgur.com/1EqweZG

Why do caps sound so different? http://imgur.com/a/Wwy7y

Capacitor Evaporation http://imgur.com/13VCzSk

Audio Capacitor Characteristics 1 http://imgur.com/ilXAawv

Audio Capacitor Characteristics 2 http://imgur.com/pI7UPdO

Choosing Capacitors 1 http://imgur.com/TUTljSD

Choosing Capacitors 2 http://imgur.com/IHRgbZJ

Causes of Speaker Failure http://imgur.com/T8yAgD3

Crimp Connectors http://imgur.com/wmDhvbs

Speaker Drivers Parts http://imgur.com/dI0uSW3

One of Mine http://imgur.com/c1EL0ph

Everyone has my permission to copy, repost, distribute, or print to paper any of the jpegs I've posted here. Everyone has my permission to do the same with my text in the self posts.

[KLM Degler Systems, Brown Inst. '77]

Since Feb 12, 2014

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