The following is my experience -- but it's just my opinion and other people might hear different things with their ears.
I tried the "Herb Jeshke" pipe, modified a little as Bob Brines suggested to smooth the frequency response.
I used the RS 1354 drivers that everybody was so wild about in these pipes. Used them with push-pull tube amps and SETs.
They sounded okay for really cheap speakers, but they were huge & I was willing to pay more ($299) to get a lot more quality sound from a DIY project (Adire HE 10.1's). They were not particularly efficient, so they didn't do dynamics very well, and the frequency response was ragged and rolled off compared to full-rangers with better ($$$$) drivers I've heard or crossover speakers. I tried unsuccessfully to give away the cabinets for a year, and finally called the county trash department to haul them off.
I also built the Hawaii 5.0's everybody raved about. I liked them for reasons I can't quite explain, but I sold them quickly thereafter for $90 or so and never had second thoughts.
There are a lot of "budget" bookshelf speakers out there (Axiom and Paradigm entry level models come to mind at around $240) that will whup the Voight pipe, unless you spend $100 or more on a pair of Fostex drivers to run in them, in which case it will still be a question of taste whether the Foxtex pipes beat the bookshelf models.
Still, if your budget is under $100, these might be the speakers for you. Check Bob Brines' pages for folded designs that will give you the same sound with less MDF.
