TenTec
[Top] [All Lists]

Re: [TenTec] "The Bug" a/k/a Orion II Audio

To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Subject: Re: [TenTec] "The Bug" a/k/a Orion II Audio
From: "Grant Youngman" <nq5t@comcast.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 7 Apr 2006 12:20:03 -0500
List-post: <mailto:tentec@contesting.com>
> spare me that retort) Like this audio thing, hard to argue 
> with something so subjective and nebulous.

I don't think it's all that subjective or nebulous.  My guess is that the
reports of the v2/II audio not being "robust" may have a lot to do with the
low end roll off.  Can't comment on the "dynamic distortion" that has been
talked about.

That can be clearly seen in the measurements posted by another list member,
and in this one -- taken from the Monitor output with the AUX audio input
driven by a pink noise source and the results plotted in an RTA.  The upper
(blue) curve is with the LF cutoff set at 50 Hz, the lower (pink) curve has
the LF cutoff set at 300 Hz.  I'll let you draw your own conclusions.

Raising the LF cutoff also raises (very slightly) the high frequency cutoff.
It moves from about 3800 Hz to the specified 3900 Hz when the LF cutoff is
raised to 300.

http://mysite.verizon.net/nq5t/Misc/Orion%20II%20Curves.png

There's an assumption here that Monitor output reasonably reflects the
transmit spectrum.

This isn't whining, it's just the way things are at the moment.  Hopefully,
something is being done about it.

Grant/NQ5T





_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec

<Prev in Thread] Current Thread [Next in Thread>