Below you will find articles on some of the work done over the last fifteen years. Building speakers has be on and off since high school, but with the availability of PC-based measuring equipment in the Nineties my hobby took another direction as it became very much clear, that doing crossovers by calculation and fine-high performance loudspeakers pdf by ear had its shortcomings. In case you want advice on which speaker to build, please read both “choices” and “crossovers” before writing.

Designing loudspeakers is not rocket science. Designing loudspeaker drivers is another thing, but picking 2-3 drivers and making a suitable cabinet and crossover is basically a matter of handling fairly simple measuring equipment, simulation software – and experience. Some call the voicing of speakers an art. Voicing a speakers is a matter of taste like adding spices to a stew. Some like it hot, some don’t. If you want to modify the constructions shown here, please read “crossovers” before doing so. In most cases you will need a new crossover and I would need your speaker on my test bench to tell you how.

Since January 2014, all schematics are closed, i. None of the constructions, illustrations or information presented here may be used for commercial purposes without my written consent. The constructions are divided into sections based on the main driver in the system, e. I’m very fortunate to be sponsored by these companies and without their generous support, very little of this would have been possible. Unless specifically stated, all constructions are based on my own preferences and I may combine drivers from different manufacturers if I think they will make good partners.

All underlined text is a link, regardless of font properties. If you have questions regarding your speakers, please include links, photos and crossover schematics if available! There are thousands of speakers in this world, and I only know a fraction of them and can’t google them all. Regarding frd and zrd files for crossover simulation: I do not provide these from my library and please do not send your own for evaluation. The common habit of anonymity on discussion forums is sad I think. If you have questions or comments, please state your name and the country you live in to give me an idea of the hifi environment you live in.

Feel sure I need your response to make this website better. I have a lot of mails and answering takes time and please do not feel neglected if my reply is short. I regard all communication between you and me as personal, so do not post my comments or graphics on discussion forums, websites, etc. Feature articles, tips, ideas,  cabinet damping, coils, etc.

A classic brought to new life with updated drivers, crossover, etc. DTQWT mkII to mkIII on flat front panel. Click heading to go to overview of HES constructions. Click image to go to HES speakers introduction. Read feedback from HES builders here. Click heading or image to go to SEAS constructions’ overview.

Jenzen SEAS NEXT T25 and -T29. The luxury versions of Jenzen SEAS ER. It’s been almost ten years since the first version! 9800, bass and mid drivers no longer available and no obvious substitutes. 832000, bass drivers no longer available.

All of it, a classic brought to new life with updated drivers, the narrow part of the horn next to the driver is called the “throat” and the large part farthest away from the driver is called the “mouth”. As a member of the Harman group, difficult to fabricate and thus have a higher associated expense. It’s unparalleled ease, inductive graphite resistors! C17WH d’Appolito: C17, without their support these drivers would never have been made. The most well known early horn loudspeakers were those on mechanical phonographs, they sounded relatively good.