K3 question to those who have upgraded their DSP board

[Mike K2MK]

I've noted several recent postings from those that have upgraded their DSP
board (which I assume included the LP filter board). Each has said that the
new board sounds great. I wonder if those folks could be a bit more specific
in order to help those of us on the fence. Has it improved CW or SSB? Has it
improved fidelity? Reduced noise? Speaker or headphones? Any other thoughts?

73,
Mike K2MK

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[Dick Dickinson]

>Has it improved fidelity? Reduced noise? ...Speaker or headphones?

...Line Out?

I ask as seemingly on the reflector I picked up that (LPF asisde?)
improvements to the DSP board audio affected the Headphone output.  The
improvements to Speaker and Line Out were those made on the main board.
 
If the above is the case, does the LPF affect ALL audio outputs?

Will Elecraft or someone clarify this?

73,
Dick - KA5KKT

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[KK7P]

> If the above is the case, does the LPF affect ALL audio outputs?
>
> Will Elecraft or someone clarify this?

The LPF affects PHONES (fropnt and rear) and SPEAKER only.  It does not affect
LINE OUT.

The component value changes improve headphone out (front and rear) low
frequency response by changing the 10 uF output coupling capacitors to 100 uF.
 LINE OUT is not affected by this change, nor is speaker out.

Tx Audio low frequency response is improved for all external Tx audio sources
(front Mic, rear Mic, LINE IN) by several componenet value changes.

The componenet value changes for Tx audio and headphone audio were
incorporated in production radios several months ago.

73,

Lyle KK7P (in Tucson)
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