[Elecraft] [K3] K3 Rev C DSP with Low Freq Enhancement shipdateinfo; New swap out option on parts order page. CORRECTION

[Don Wilhelm]

Steve,

Hopefully I can make it more clear. 

The speaker and line out audio *already* had sufficient low response 
with no changes.  The headphone output had limitations unless higher 
impedance headphones were used.  The capacitor changes allowed lower 
frequency response with lower impedance headphones.

As for the firmware, previously, the bass response was limited in the 
firmware.  That limitation has now been relaxed and greater low 
frequency content can be heard in the speaker (assuming you have a 
speaker that can produce those lows, the internal speaker is not that 
speaker), or at line out.  If you are using low impedance headphones, 
you will need to increase the capacitors to hear the difference in the 
headphone output.

73,
Don W3FPR

Steve Ellington wrote:
> Paul
> This is so confusing. First, a hardware change (2 caps) improves bass then 
> along comes a firmware change that does the same thing but only for 
> headphones and line out and then a new DSP board that works with the 
> firmware to do the same thing but still only for headphones and line out and 
> now we're back to the 2 caps that improve headphone, line and speaker audio. 
> No wonder there are so many questions. I wish someone would make this more 
> clear.
> Steve
> N4LQ
> N4LQ at carolina.rr.com
>   
>