Number 1, I think it depends in large measure on the quality of the
playback. I listened first on my stereo speakers on my computer and I
varied the bass as I listened. I had to lower the bass response on the
Orion bit, and increase it on the Kenwood part to make either sound like
"normal" AM audio. I agree with Carl, it would seem that the Kenwood bit
is too good for a 3KHz passband.
Number 2, There is clearly a difference between the two recordings, so maybe
someone in Tennessee has a tin ear? Hey...poking a little fun
here....nothing serious.
I think both recordings when played back on a good sound reproduction system
sound excellent. The "muddy" factor, I suppose is simply the bass response
on a particular play back system.
Larry, N0XB
----- Original Message -----
From: "Dennis Jones" <k6rcl@cox.net>
To: "Ron Castro" <ronc@sonic.net>; "Discussion of Ten-Tec Equipment"
<tentec@contesting.com>
Cc: "Dennis Jones" <k6rcl@cox.net>
Sent: Tuesday, January 23, 2007 7:05 PM
Subject: Re: [TenTec] AM Receiver distortion in Orion II
Ron,
Sounds good to me, in fact quite good.
DJ K6RCL
On Jan 23, 2007, at 2:54 PM, Ron Castro wrote:
One of the items on my "wish list" for the Orion II is to fix the
AM receive audio, which sounds to me like a problem in the DSP code
that causes distortion and 'muddy' sound. It's most noticeable
during selective fades that cause a serious clipping effect. Last
night, I made an MP3 of a local AM radio station comparing the O2
to a TS-870, and sent it to TT service. This morning, TT said they
couldn't hear any difference between the two receivers. Is it my
ears or what? The link to the clip is below. The O2 is the first
60 seconds and the 870 is the second 60 seconds. Bandwidth on the
O2 is 6 kHz, while the 870 is 3 kHz, although as you'll hear, it
sounds just the opposite!
http://n6ie.com/OrionII_vs_870.mp3
Can anyone besides me hear the difference?
Ron N6IE
www.N6IE.com
(Formerly N6AHA)
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Dennis Jones
k6rcl@cox.net
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