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tysontom

Early KLH Ads Featuring The Model One, Two and Three

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tysontom    0

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Andy    0

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

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tysontom    0

>

>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

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dxho    0

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.pdf

http://www.classicsp..._files/2756.pdf

http://www.classicsp..._files/2757.pdf

http://www.classicsp..._files/2758.pdf

--Tom Tyson

These have disappeared into the mysts of software upgrades. Does anyone still have copies?

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