[Icom] RE TS940 and IC751A

Sun, 05 May 2002 17:41:15 -0700

Chris,

Not necessarily. The audio-frequency response curve for optimum articulation
(intelligibility) at the receiver is typically 350 to 2700 Hz at the -6 dB
points, with a 2 dB peak at about 1800 Hz. Assuming that the receiver audio
response falls within this curve, a high-quality speaker will in all
probability sound more pleasant than the little internal speaker of the
radio,  but its capabilities will be wasted to some degree.

If the low-frequency response of the radio extends down to 70 to 100 Hz, the
low-frequency components will detract from articulation in some situations.
If this occurs, the radio's IF filters and/or PBT can be adjusted to cut the
low end.

Probably the best choice of speaker is one designed to match the
audio--frequency response of the receiver. I have had an Icom SP-20 for many
years, and it does a pretty good job in this regard.

Best 73,
Adam, VA7OJ/AB4OJ
North Vancouver, BC, Canada
http://www.qsl.net/ab4oj/
Note new e-mail address:
mailto:[email protected]

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Chris BONDE
Sent: Sunday, May 05, 2002 12:24
To: [email protected]
Subject: Re: [Icom] RE TS940 and IC751A

I would certainly hazard a guess that a hifi  speaker would enhance a ham
or communication radio audio.

Chris opr VE7HCB

At 04:20 PM 2002-05-05 +0800, you wrote:
>   Manybe most of the amateur set +hifi speaker have a very vey good sound.
>        73! Xu
>