tysontom Posted September 24, 2007 Report Share Posted September 24, 2007 I have located what I believe are the first KLH advertisements, shown first in May 1957 and followed with others through the end of 1957.http://www.classicspeakerpages.net/dc/user_files/2755.pdfhttp://www.classicspeakerpages.net/dc/user_files/2756.pdfhttp://www.classicspeakerpages.net/dc/user_files/2757.pdfhttp://www.classicspeakerpages.net/dc/user_files/2758.pdf--Tom Tyson Link to comment Share on other sites More sharing options...
dynaco_dan Posted September 24, 2007 Report Share Posted September 24, 2007 Hi Tom;Thank you very much for posting them.Vern Link to comment Share on other sites More sharing options...
Andy Posted September 24, 2007 Report Share Posted September 24, 2007 Hey Tom, Thanks for posting these images, they seem to be the very first KLH literature released to the public, and give a timeline to the birth of the company with the dates of May, then August, and finaly October of 1957. The May item is important by it saying..... We've formed a company - we're developing some speakers - we will follow up shortly. The famous KLH logo not seen until the August ad 'The KLH Family'. As this forum has discused, production of these first 3 models must have been pretty low - in the hundreds or maybe a thousand units of each. A full head of steam didn't get gong until the Models Four and Six were introduced (the Six first seen in March of 1958.) That Model One must have produced some solid low frequencies having the 2 woofers in a cabinet of 4.5 cubic feet...a big fella indeed!Curious where you found these items ?Andy Link to comment Share on other sites More sharing options...
tysontom Posted September 28, 2007 Author Report Share Posted September 28, 2007 >>That Model One must have produced some solid low frequencies>having the 2 woofers in a cabinet of 4.5 cubic feet...a big>fella indeed!>Andy,I believe the Model One had two (parallel-wired) 32-ohm versions of the KLH Four 16-ohm woofer, which was called an "11-inch woofer," and each woofer was in its own separate 2.25 cu.ft. enclosure -- each somewhat larger than the usual 1.5 - 1.7 cu.ft. KLH Four, Three and Two models. The woofers still had approximately the same f(s) as the Four, maybe slightly lower; therefore, the One would not necessarily go lower in bass, but with two woofers doing the job of one, the distortion would definitely be lower and the output could be jacked up higher without overload. It would certainly be a more powerful-sounding woofer, particularly with the tone controls or an equalizer adjusted for more bass response. Having two woofers working in tandem brings on another phenomenon: mutual-radiation impedance, whereby the output down to resonance is amplified by nearly 3 dB due to the proximity of the two woofers operating in the same frequency range. One other observation: I am not sure if the Model One, Two or Three had the epoxied-in woofer, but it must have had it since the model Four came on stream shortly after KLH began operations.Incidentally, I don't believe that many of the Model Ones were built. They were just too expensive (at nearly $400 each back in 1957-1960), large and heavy. Besides, one had to add a tweeter unit such as the Model Five tweeter or the JansZen electrostatic. My bet is that fewer than 1000 were made, if that many. I found these ads in early issues of *High Fidelity Magazine.* There were some early ads in *Audio* as well, but the first ones were only in HFM, I believe.--Tom Tyson Link to comment Share on other sites More sharing options...
dxho Posted January 25, 2012 Report Share Posted January 25, 2012 I have located what I believe are the first KLH advertisements, shown first in May 1957 and followed with others through the end of 1957.http://www.classicsp..._files/2755.pdfhttp://www.classicsp..._files/2756.pdfhttp://www.classicsp..._files/2757.pdfhttp://www.classicsp..._files/2758.pdf--Tom TysonThese have disappeared into the mysts of software upgrades. Does anyone still have copies? Link to comment Share on other sites More sharing options...
dxho Posted December 28, 2017 Report Share Posted December 28, 2017 Found them. Interesting that early ads talk about building all parts of the speaker systems in house, at least until they started buying tweeters from GE for the Model Four. 2756.pdf 2755.pdf 2758.pdf 2757.pdf Link to comment Share on other sites More sharing options...
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