[TenTec] Top receivers

[wade staggs]

Yes, I do know that the 12 volt power to most Computer Speakers also limits
output before Clipping sets in. ( Output voltage across 8 ohm load equals
VCC or power supply voltage. )

On Wed, May 16, 2012 at 10:31 PM, wade staggs <tvman1954 at gmail.com> wrote:

> 10% THD in a Guitar Amp is a good thing in some cases.Most have a separate
> PRE (Preamp ) and POST ( should be self explanatory. ) By running the PRE
> higher Fuzz or Distortion is created to add effects to the sound.
> Personally, 10% distortion when trying to listen to a receiver or stereo
> fatigues me. And to listen on a 3 inch speaker at higher volumes with a 2
> watt limited output and 10% distortion just sucks. My Kaito KA1102 which is
> a Really Cheap Chinese receiver has those same specs. This could be
> expected from an entry level HF rig but really, the Big Box stuff could be
> better. There is a Poor Man at this shack but, a three to ten thousand
> dollar radio needs better audio IMHO. For those who find the audio and
> speaker combination hard on the ears, remember the Line Level Audio Jack on
> the rear and better amplified speaker/s would be a good way to go. Now the
> station here is just a 585 Paragon which has a pretty decent speaker in the
> matching power supply. The tinny little speaker in the rig? Not so great. A
> set of quality Computer Speakers really make a difference.
>                                                              73 de
> Wade/KJ4WS
>
> On Wed, May 16, 2012 at 9:42 PM, Jim Brown <k9yc at audiosystemsgroup.com>wrote:
>
>> On 5/15/2012 10:37 PM, Richards wrote:
>> > Am I the only one to think the audio output kinda sucks ?
>>
>> With some receivers it certainly does, especially those that are power
>> or supply voltage limited.  BUT -- I like to think that I know the
>> difference between my ham rig and my home entertainment system.  There
>> are MANY important radio specifications, both from functional and
>> performance points of view. If you want a rig that is very light to drag
>> up a mountain or put in your pocket, battery voltage and current drain
>> will drive the design, and that will limit output level.  That IS a
>> design objective of all Elecraft radios, and the K3, even with two
>> complete high performance receivers draws only 1A on receive. I ran
>> single-op Field Day nearly full time QRP with a K3 and two big Costco
>> deep discharge batteries, and still had plenty of charge left at the end.
>>
>> FWIW, for ham radio at home, headphones have ALWAYS been my primary mode
>> of operation. I use a loudspeaker only for casual listening.  Every
>> radio I've ever owned has had quite adequate drive for headphones.  On
>> the other hand, a mobile radio, including a talkie, needs enough audio
>> to get over ambient noise, and many of these rigs don't.
>>
>> 10% distortion is a standard spec for industrial paging systems.  That's
>> the distortion at the peak of the signal just below clip, and is typical
>> of many computer sound cards.  You would be surprised how GOOD 5% second
>> harmonic distortion sounds -- Aphex made big bucks selling audio
>> "sweeteners" for broadcasters and recording studios with a knob called
>> "warmth" that. What it did was intentionally PRODUCE second harmonic
>> distortion.  Third harmonics and higher orders (fourth, fifth, and so
>> on) sound bad at very low levels.
>>
>> 73, Jim K9YC
>>
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>
>