[CQ-Contest] Re: Heil vs. KOSS

Roderick M. Fitz-Randolph w5hvv at aeneas.net
Tue May 12 11:34:15 EDT 1998

>>I have recently purchased the KOSS made Optimus PRO-50MX Stereo
>>Headphones with boom microphone from Radio Shack
>>I was shocked to find that, to my decadent ears, the 10-22,000
>>Hertz reponse of the KOSS made PRO-50MX was vastly superior
 On Tue, 12 May 1998 13:21:09 GMT, John, (caylor at concentric.net) wrote:

>According to the Radio Shack 1998 catalog, the Optimus PRO-50MX
>response is 20-20,000Hz.
>The Optimus PRO-4AAa by Koss has a response of 10-22,000Hz but it cost
>$99.99 and has no mike.
Caylor, I am looking at the Tandy Corporation sheet of paper with the
specs for the PRO-50MX Stereo Headphones with Boom Microphone, Catalog
number 33-1135, that came with the unit and it clearly states:

   "The PRO050MX Headphone's frequency response is 10-22,000 Hz, with
   a total harmonic distortion of less than 0.2% at 95 dB SPL at 1 KHz."

I don't have the equipment to verify the specs and take it on face value.

Not sure the point you were trying to make.

Rod, N5HV

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