Speaker Related Projects

   Vector2
(A T-line and ribbon tweeter 2-way. August-2012)

   Polaris
(A tall, thin, upwards firing omnidirectional speaker. May-2010)

   Shiva_PR15
(A powered subwoofer using a 12" driver and 15" passive radiator. Jan-2010)

   Can-Less
(A computer speaker; redux. December-2005)

   Can-Can
(A computer speaker in a light canister. Jan-2005)

   Sonosub
(10" vented subwoofer in a cardboard tube, powered by a Parapix amp. May-1999)

   MTM Center Channel Speaker
(A Madisound design. Nov-1997)

   2-way Surround Speakers
(5" woofer and 1" tweeter. July 1997)

   3-piece mini system
(6" DVC bass module mated to 4" car speaker. June 1997)

   3-way Vented Floorstanding Speaker
(vented 10" woofer, 5" mid and 1" tweeter in a 4 ft tower. Summer 1995)

   NHT1259 Subwoofer
(A 12" woofer in a sealed architectural pedestal. Winter 1994-95)

   Inexpensive Speaker Stands
(Particle board, sand and spray paint. Fall 1994)

   2-way satellite
(6.5" woofer and 1" tweeter. Summer/Fall 1994)

Electronics Related Projects

  900 MHz Audio Receiver
(Better use for bad headphones. Jan-2008)

  Buster - A Simple Guitar Amp
(Perfect for the beginner. Jan-2010)

  A PC-based Audio Console
(Use a PC to play tunes. Jan-2010)

  LM-12 Amp
(Bridged LM-12 opamps. Aug-2003)

   CeeDeePee
(A CD player and FM tuner from spare computer parts. Oct-2002)

   Quad 2000 4-Channel Amp
(Premade modules by Marantz. May-1998)

   Zen Amp and Bride of Zen Preamp
(by Nelson Pass. Apr-1997)

Articles

  Backing-up LPs to CD-R
(Whiningdog.net 10-Dec-2002)

  Using Wood in Speakers FAQ
(Work in progress)

   MDF FAQ for speaker builders

   Woodworking Tools for the DYIer
(HomeTheaterHiFi.com Oct-1998)

  Some Thoughts on Cabinet Finished for DIY Speakers

   Large Grills Made Easy

   Some Parts Suppliers
(Outdated)

Other Useful Stuff

   DIY Audio Related URLs

  Veneering Primer
(by Keith Lahteine)

   How to get a Black Piano Finish
(by DYI Loudspeaker List members)

   Sonotube FAQ
(by Gordon McGill)

   Excerpts from the Bass List
(Oldies but Goodies)

DIY Loudspeaker List

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  DIY Loudspeaker List Archives

Vector2 - a 2-way T-Line

Introduction

This is one of those projects that I planned a long time ago and never quite got off the ground. And when I finally found the time to get it going, the plans changed.

The original concept was to include three different wants into one speaker - a transmission line for the bass, a dome mid and a ribbon tweeter. Each represent elements that I have not built or used in the past. To round it out, this would be a powered speaker with a fully active crossover.

Parts selection fell into place slowly over time. The woofers came from a sale at Madisound. They are Vifa M18WO09-06 in a very nice cast frame. The specs looked right, and so was the price. The dome mid was a little tougher - few dome mids are made these days and mids in general are far less popular than they used to be. I was almost set on a Vifa mid when a member of the Bass list offered a pair of Dynaudio D-52 mids for sale, I junmped at the opportunity. The tweeter are relatively inexpensive Pioneer ART-57D ribbons. They have a good reputation and are far cheaper than many wold class ribbons.

A 2-Way

On paper, the Vector2 is nowhere close to what I originally intended. The active crossover is gone (for now) and so is the mid (also for now). The t-line and ribbon remain, connected by a passive crossover. The cabinet will be built in two parts - the t-line on the bottom and the tweeter plus crossover mounted on the top. This arrangement lets me swap out the upper element in the future without having to re-build the t-line (arguably the most time consuming part of the construction).

The T-line

<coming soon>

Here's a picture of the t-line cabinet with one side open.

 

The Tweeter

<coming soon>

The Crossover

<coming soon>

 

The result

<coming soon>

August-2012


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