Fred,
> Do I need to upgrade the DSP board?
I added the lowpass filter but did not do a complete DPS board
upgrade. My headphones, including the CM-500 are all high
enough impedance that I don't notice any significant low end
loss (I set the 50 Hz and 100 Hz bands to -16 dB anyway) so
I could not see any benefit to a change.
The DSP board makes no difference in speaker or Line Out audio
so if your headphone impedance is about 150 Ohms or so, I would
not worry about the change unless the high frequency DAC leakage
is a problem.
73,
... Joe, W4TV
On 4/9/2011 5:41 PM, Fred Jensen wrote:
> My K3 is #642. It sounds fine on SSB. I do shift the passband down a
> notch or two but that's because I can't hear much above about 1 KHz. Do
> I need to upgrade the DSP board?
>
> 73,
>
> Fred K6DGW
> - Northern California Contest Club
> - CU in the 2011 Cal QSO Party 1-2 Oct 2011
> - www.cqp.org
>
> On 4/9/2011 1:55 PM, Guy Olinger K2AV wrote:
>> Should point out that the TX and RX EQ feature came later on as a
>> firmware upgrade, but I would definitely agree that post DSP board
>> upgrade and RX EQ, you can make it sound like anything you want,
>> including "shrill" for the contests. The K3 is the only RX that I
>> have ever had that can receive music on SSB and have it sound normal.
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