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DIY Fostex FE206En backwave horn questions

Posted by Todd A. on October 12, 2015 at 07:26:31

A few years ago, I had to get rid of my large electrostatics due to downsizing my residence, and I've gone through several sets of used speakers trying to find an acceptable replacement. None has been entirely satisfactory, so I've decided to try a set of backwave horns using Fostex drivers, such as the BK-20/Fostex FE206En combo from Madisound. I'm a fair to middlin' woodworker, FWIW, but not so hot at electronics. Low frequency response isn't much of an issue as I still have a pair of ACI Force subs to fill in the low end.

So the questions are:

1) Is there an appreciable difference in performance (other than low frequency response) between the Madisound BK-20 cabinets and the plans provided on the Fostex website linked below? The width of the BK-20 would work better in my living room. Either way, they'll get dressed up with veneer and/or hardwood skins (WAF).

2) I'd been debating using a pair of ESS/Heil air motion transformers as "supertweeters", but I really don't want to use a crossover. Is the high frequency response of the FE206En sufficient to make such augmentation unnecessary? The Horn Shoppe has such an offering (using a crossover, however), but the WAF of that setup won't cut it in this house.

3) Are there other options I'm not aware of that deserve consideration? I looked at the VH-1 from Valutronic, but I have some reservations about the driver quality offered. Resources are such I can only do this once, so I have to get it right the first time, allowing for a little tweaking to get things dialed in.

Thanks in advance,
Todd

• Fostex plans   (Open in New Window)

Edits: 10/12/15

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