ESP Logo The Audio Pages
 Elliott Sound Products
 Professional results for the Do-It-Yourself enthusiast Average >3,000 Visitors Per Day Since Jan 2001 

Pages Last Updated January 2016

Welcome to ESP, the home of DIY audio articles, projects and shortform kits. Audio is a wonderful hobby, and with DIY there is a huge scope to get the very best performance for a lot less money than otherwise. DIY audio is fun and educational, and by building your own audio equipment, you get to learn electronics as well as build equipment that would cost a great deal more in the shops. ESP is committed to providing high quality projects that are known to work, printed circuit boards (PCBs) for the most popular projects, and to assist you if necessary to complete or debug your project. There is a very wide range of power amplifiers, preamps, guitar/ bass amplifiers, studio equipment, effects, and other projects to build, including loudspeakers, subwoofers, and many others. Purchase PCBs to gain access to even more information.

IMPORTANT: Please see the disclaimer for information about these pages.

Output Valve Tester for Service Techs
Voltage Controlled Oscillator
Signal Tracer for Fault Finding
Muting Circuits For Audio

Note that ESP's primary email address has changed!
There is a dash (hyphen) where a dot used to be. Get it wrong and I will not get your message.
Go to the Contact Page to send an email.

 Products & ServicesUpdate
>Price ListComplete Pricelist for all Products  
>PurchaseProject Printed Circuit Boards and other ESP merchandise Feb 2015
>PayPal Shopping CartESP products in a convenient shopping cart (USD and non-Australian purchases only at this stage) Feb 2015
>ProjectsComplete designs and ideas, with schematics and construction details   Feb 2016
>ContactSend an email to ESP
 Articles & InformationUpdate
>ArticlesAmplifier and power supply design, loudspeakers, basic theory, etc. Oct 2015
>Lamps & EnergyAll material under this heading has its own separate index May 2015
>ValvesValve (vacuum tube) amplifiers, information and analysis. Includes A couple of valve-related projects Apr 2015
>App. NotesApplication notes, covering a wide range of different applications, not necessarily audio related Jan 2011
>The Class-A Amplifier SiteTCAAS (by Geoff Moss in the UK) is now hosted as an archive by ESP.   Please note:   no queries will be answered! Nov 2012
>EducationCustomised projects for schools, technical colleges and universities 2003
>ConsultingESP also offers custom design and consulting services 2002
> Site MapComplete index of all available pages on this site
>SearchSearch the ESP pages to find what you are looking for 
>ForumDiscuss ESP projects and articles with other readers on the ESP Forum. Username ... forum, password ... esp-forum 
 Privacy, Ethics & Security Update
>PrivacyESP's privacy and ethics policy 2002
>DisclaimerThe fine print. Please make sure that you read it thoroughly. 2002
>CopyrightA few facts about copyright, and what you can and cannot do with other peoples' material. Apr 2011
>Spam/Scams/SecuritySome things for you to consider, regarding the threats posed by the Internet Dec 2014
 General InformationUpdate
>ContributeIf you have an article or project you would like published, let me know Jun 2005
>DownloadsVarious useful programs and spreadsheets to make your life easier Dec 2004
> FAQsFrequently Asked Questions. Check here first Oct 2007
>Linksto my favourite sites (plus additional and miscellaneous links) Apr 2005
>ClocksThere is great synergy between my life-long career and my hobby - see why here. May 2014
>Useful & MiscellaneousVarious things that don't seem to have a real home anywhere else Apr 2010
>Why DIY?There are many reasons that people DIY, and there are also many benefits. May 2008

Dates shown in RED indicate new or updated pages, typically within the last two months.
ESP small  projects and articles are free for personal use only. Any commercial use is strictly prohibited by international copyright laws without the express written consent of Rod Elliott. Images and text are copyright © 1999-2010 Rod Elliott, unless otherwise stated. Web and all graphics design by Rod Elliott except for specific (non ESP) logos where used, whose copyright is the property of the respective owner(s).

Links - Anyone wishing to link to my pages may do so freely, but please make the main index page ( the sole link. Please do not link to individual pages or image files without asking first. This ensures that visitors get to see all that the site has to offer, and not just a part of it.

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Thornleigh NSW 2120
ABN 77 069 281 668

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