Sparkomatic (Car audio & accessories) See --> Altec Lansing
Speakers Delight introduced the "Referenz line" in 2004 but these were 2 higher end models based on the Delight 3, namely the "Kleine Referenz" that was very similar to the D3 and the more expensive "Referenz" that was a further development of the concept with a 5 way D'Appolito configuration (The D3 and Kleine-R had a more conventional 3 way one), doing a search on the second hand market is is either of those 2 you are likely too find, I have not been able to find any examples of the Delight or MPX. By 2006 the company dropped all models in their lineup except the larger "Refernz" and concentrated on selling models by other manufacturers.
Belived to have started out in the late 90's and we have not heard from SD since 2008 and Hr. Dasbach offered what appeared to be the remains of his stock for sale on German Hi-Fi sites in early 2010..
Speciality Web Marketing Inc.
Spectral See --> GTRC Services (USA - Multimeda products and cables - 00's)
Sprint See --> Recoton (Assecories and land line phones only 1998 to 2003)
S. P. Technology Loudspeakers Inc.
The company started out by making a standmount/large bookshelf type speaker called Timepiece 2.0, note that there was no Timepiece 1.0 from the company, it refers to an DIY product from Mr Smith, it was soon thereafter joined by a larger standmounter called Continuum A. D. that is basically A Timepiece 2.0 in a D'Appolito configuration and the company added loudspeakers stands especially developed for their products called "Golden Ratio" to the line-up. The 2 speakers in general got excellent reviews on audio related websites and forums, but never managed to get their products reviewed in the established hi-fi press.
In addition to the home market the company targeted their speakers towards the professional audio market and in fact referred to most of their products as monitors, but that is a bad habit that some speaker manufacturers seem not to be able to shake. The reception in the pro-audio world was lukewarm at best, good reviews appeared but as with the hi-fi market, only on on-line with the more serious publications ignoring the company's products altogether. It should be taken into account that over 95% of the current use of monitors is either nearfield or full size monitors and the S. P. Technology products were not really suitable for either use, the only sector of the recording industry that we see mid-field monitors used these days are in mastering rooms and mastering engineers usually not happy with two way systems like the S. P. products simply because multi driver configurations allow for a better overall tonal balance and less severe crossover jumps, which is vital in that application.
This coincided with the start of some serious financial problems for the company, the main investor in S. P. Technology decided in the fall of 2005 that he would not be putting any more funds into the operation which left the company dependent solely on sales income at a time when it was expecting a cash injection and in a similar timeframe the company had some issues with personnel that only exacerbated the problem. As cash flow from the internet based sales model the company was following could be erratic, S.P. Technology started to work with other companies and for instance company designed the S8 and S9 speakers for NuForce and delivered the Essence AV-1 in an unfinished form to Response Audio who made some mild modifications to it and sold it as the Musica Bella SP/AV-1.
The initial marketing strategy for the company was interesting, it appeared to rely mostly on the internet rather than advertising or other forms of publicity, they had long descriptions of their products on their homepage full of technical buzzwords, but also separately provided technical background information and explanations of the terms used in some detail on their site, in addition the company sponsored a forum on Audiocircle.com where the main designer of the speakers was approachable, and usually answered questions in a timely manner. Actually explaining the buzzwords and technical terms that you use is laudable in general, but furthermore this approach to information distribution appeared to hit the sweet spot for the company in some ways. Even though the design of the pages left something to be desired and some of the explanations were a bit myopic it was just the right amount of information get the those interested in their speakers hooked and enough info on the homepage to keep the company from having to repeatedly answer the same inane questions on the forum as often happens when you make claims about your products without filling in the blanks, also it allows the company to control the definition of the terms to a certain degree which is always beneficial from a marketing standpoint. As with any hi-fi manufacturer some of the text was a bit inane, the references to god and "natural law" where a bit too frequent, when you have to make underlined references to "natural law" when explaining why your speaker stands are the size they are, you are dangerously close to being comical, at the least we are not aware of any speaker stand manufacturer that make products that defy the laws of physics, not currently anyway.
After the main investor withdrew in 2005 the company was for all intents and purposes run by Mr Smith and he replaced the original homepage with a new one that was more professional looking but annoyingly enough had no information on the newer models that the company had introduced post 2004, except for a limited amount of specifications and by 2007 all info apart from specifications and prices had been removed from their homepage . At the same time supplies of the S. P. Technology speakers became erratic and although the company continued to introduce new models including subwoofers, but that class of devices had not been offered by the company before, however we have not been able to find any of these post 2005 models on the second hand marketplace apart from Mk III versions of earlier speakers like the Timepiece and Revelation so they appear to have been made in very limited quantities.
The company announced in November of 2008 that all production and staffing problems had been solved and that waiting lists for their products would be cleared by Christmas of the same year, however that did not happen and S. P. Technology Loudspeakers stopped operating at the beginning of 2009 and by early summer Mr Smith started manufacturing the loudspeaker lines he had designed for the company himself under the Aether Audio brand and the company was dissolved in 2010.
Resources: -- Aether Audio/S. P. Technology discussion board at audiocircle.com.