The Speaker Essentials

Speaker Refoaming:

Surrounds:

Reedger - ggzsanka@aol.com

Instructions:

Decware

TNT Audio

Woofer Repair (Video)

Speaker Repair:

Crossover Schematics

Suppliers:

Simply Speakers

Orange County Speaker Repair

EIA Codes:
As per industry standards, there are almost always a set of numbers printed onto the magnet, magnet cover, or frame of a speaker driver indicating the manufacturer and date of manufacture. The first three digits typically identify the manufacturer, information that can be extremely useful to identify the brand/model of an unidentified speaker. The following links provide information for how to decode these numbers.

Electronics Genius

Uncle Spot

Valvette

Weber

Brand Specific Webpages

Altec-Lansing:

Lansing Heritage

HiFi Lit: Altec

Bozak:

Bozak Speakers Yahoo! Group

Hi-Fi Lit: Bozak

Dahlquist:

Dahlquist Yahoo! Group

Design Acoustics:

Design Acoustics Yahoo! Group

Dynaco:

Dynaco Yahoo! Group

Dynaco Speakers

Infinity:

Infinity – Through the Product Support search function, specifications for most vintage may be located.

Infinity Classics – The reference page for classic vintage Infinities. Pictures, specifications, manuals, crossover schematics, and reviews may be obtained for many vintage Infinity speakers.

Bobby Shred’s Classic Infinity Pages – The original vintage Infinity information site. There are scans of brochures for some models available for viewing, an instruction page for the repair of EMIMs/EMITs (Infinity’s planar midranges/tweeters), and a guestbook for the selling of Infinity speakers and speaker parts.

Watkins Stereo – The original designer of Infinity’s incredible Watkins woofer. Provides rebuilding services for woofers of this design.

JBL:

Lansing Heritage

KEF:

Hi-Fi Loudspeakers

Micro-Acoustics:

Micro-Acoustics Corporation History Page

Tannoy:

Tannoy

Tannoy Yahoo! Group

Tannoy Monitor Gold

Tannoy Speakers

HiFi Lit: Tannoy

Sound Thinking Informative Speaker Threads:

Speaker Crossover Schematic Archive

Types of Planar Speakers

Voice Coil Repair

Midrange Dome Tinsel Repair

Magnepan Tweeter Repair

Dahlquist DQ-10 Recapping

Sound Thinking's Speaker Reviews:

Dahlquist DQ-10

Design Acoustics D-6 Review #1

Design Acoustics D-12

Design Acoustics PS-3

EPI 100

Flatline Design Model 175 Review #1

Flatline Design Model 175 Review #2

Pioneer S-1010 Review #1

Pioneer S-1010 Review #2

Teledyne AR-91

The above post is a work in progress that I unfortunately haven't updated in a while. If anyone has additional links that could or should be added, particularly those devoted to particular brands, then please post them and they'll be added to the above.

Thanks,
- JP

DIY component suppliers:
www.speakercity.com
www.partsexpress.com
www.e-speakers.com
www.madisound.com
www.meniscusaudio.com
www.zalytron.com
www.aespeakers.com
www.creativesound.ca
www.solen.ca

DIY sites:
www.snippets.org
www.diyspeakers.org
www.diyaudio.com

sources of everything.
www.ebay.com
www.shopgoodwill.com
www.craigslist.org

www.phl-audio.com
www.adireaudio.com
www.ascendantaudio.com

Here's one you can add for Altec fans if you like. It's the Altec forum.

http://www.hostboard.com/cgi-bin/ultimateb...bb=forum&f=3729

Speaker building tool sites:

http://www.pvcconsultants.com
-site containing a number of advanced acoustical tools that run with microsoft excel. Great tools, combined, they provide close to the same functionality as some of the professional packages.
http://www.linearteam.dk/
-winisd is one of the better box building programs that is freeware.
http://www.speakerworkshop.com/
-outstanding freeware that allows crossover and box modeling functionality.
http://www.trueaudio.com/
-Great source of info, and TrueRTA, among other excellent pieces of software and some good white papers.
http://www.ht-audio.com/
-source of bassbox pro, a great box simulation tool if you wanted to spend some money.

With speaker workshop, you can take measurements of drivers and speaker systems that are pretty thorough. In order to do it, you need a jig and a mic.
Here is a good budget mic: Behringer ECM8000
http://www.musiciansbuy.com/BEHRINGER_ECM8000_MEAS_MIC.html

This requires a mic preamp, i'd recommend one of the Behringers or any budget mic preamp. No need to pay more than 75.00.

The most popular jig is the Wallin Jig:

http://www.vikash.info/audio/sw_jig/

Here is one I may have missed.
http://www.klipsch.com/
Greg

SERIES CROSSOVERS

Series crossovers, how do they work? The fundamentals of series crossovers.

http://www.humblehomemadehifi.com/Crossover.html

a tried and -*test*-('")ed, real world guide to speaker wire:
http://www.roger-russell.com/wire/wire.htm

Acoustic Line Source Research

Excellent page for anyone interested in DIYing dipole speakers based on ribbons, quasi-ribbons, planar-magnetics, and even cone drivers.

A site for the worls renowned Spendor BC-1 speaker.

If ever there was a speaker to embody the "BBC Sound", this was it.

http://www.troelsgravesen.dk/vintageBC1.htm

Jorge

Incredible stuff.
Tanx for this great page.