Martin J. King of Quarter Wavelength Loudspeaker Design has added a new DIY open baffle loudspeaker project to his site. Martin's loudspeaker project uses a Jordan JX92S full range driver mounted on an open baffle in conjunction with a Goldwood GW-1858 woofer which is mounted in an H-frame. The picture below (click to enlarge) shows the new open baffle speaker design set up next to his Lowther DX3 ML-TL speakers.
As you can see, the enclosure is fairly simple and relatively compact (for open baffle speaker systems). The two-way dipole speaker systems covers most of the 20 Hz to 20 kHz frequency range. The H-frame configuration is used for the bass below 200 Hz and the small Jordan full range driver are for the frequency range from 200 Hz to 20 kHz.
As with all of Martin's loudspeaker projects, his latest is also very well documented and very informative. For full details about this loudspeaker project, see Martin's writeup: Jordan JX92S Open Baffle and Goldwood GW-1858 H Frame Two Way Speaker System - (PDF 1.68MB).
Related Jordan JX92S DIY Loudspeaker Projects:
What's Playing: Kate Bush -King of the Mountain
Back in September 2007 Adam constructed a pair of 3-Way DIY Tower Loudspeaker using all HiVi Research drivers. Well, as most of us in this hobby know - once you start building, you just can't stop! The photo below shows Adam's HT setup up in 2007 sporting his new DIY tower loudspeakers.
And here is a more recent photo of his HT setup.
In the photo are a couple of new projects. A DIY HiVi SP10 10" subwoofer and a DIY HiVi home theatre center channel. Consistent with his previous tower loudspeaker build, only drivers from HiVi Research were used and all of the speaker enclosures are constructed using MDF with a black oil based epoxy paint finish and red oak trim.
Adam reports excellent results and seamless integration with his HT setup. His only complaint is that he needs matching rear channels now. I am sure it will only be a matter of time before we see those. See the project pages for full information about these home theater loudspeakers:
What's Playing: A Flock of Seagulls - Telecommunication
Originally Posted: 30 October 2006
I am slowly working on getting my new site up and going, but in the meantime, I did manage to put the finishing touches on a DIY Subwoofer project. Below is the front view of a ported subwoofer project using a MAW-10 driver from www.mach5audio.com.
The enclosure is constructed from 3/4" MDF and active power is supplied by a partsexpress plate amplifier. On the underside of the enclosure is a speaker terminal so I can switch between passive and active power. The enclosure was finished with the same cream color paint used on the DIY Fostex FE127E Sealed Bipole Speaker Project.
The driver is still breaking in, but it already outperforms my JBL PB10. For more pictures and information, see the DIY MAW-10 10" Subwoofer Project page.
Update: 5 November 2007
Related Subwoofer Projects:
What's Playing: Monday Night Football
Originally Posted: 13 June 2006
Another set of DIY full-range speakers! The small fellows in the picture are a pair of 23L sealed bi-poles speakers using the Fostex FE127E driver and built with MDF. Many thanks go out to Mark from mach5audio.com who did most of the woodworking. The wife pleaser in the middle is an experiment of his ... A 20" subwoofer in an open baffle! The test setup was a Luxman preamp, Behringer DCX and Luxman power amp. Cross over points between 80 and 120Hz were tested with 90-100Hz working well with the 20" open baffle sub. It was tough trying to place the speakers as we found the 20" sub was often in the way of the music, but we did manage to get it set up nicely. We were very pleased with the initial results and are expecting even better performance with a tube amp.
Overall, I am very pleased with the results from this very simple project. More information about this project and an enclosure plan is available on the DIY Fostex FE127E Sealed Bipole Speaker Project page.
Related DIY Audio Projects:
What's Playing: Marc Almond & Softcell - Say Hello, Wave Goodbye
