[Elecraft] KSB2 off frequency?

[John Huffman]

I continue to struggle to get my KSB2 to sound as good as other rigs.  I've 
heard other K2s on the air and know it's my individual problem.

I was testing today on 7265 LSB trying out two different mikes - Elecraft MD2 
and Ten Tec 706.  The station listening said:

- the Ten Tec has no lows and lower output

- the MD2 sounds too bassy and muffled

- the MD2 sounds fine if he tunes up 40 hz from my frequency

Based on this, I recorded both from the audio on a separate receiver.  I agreed, 
the MD2 sounded bad on frequency, but sounded normal if I tuned up about 40 hz. 
The Ten Tec had no lows and changing frequency made little difference.  But, it 
took more voice to trip the VOX with the Ten Tec.

Would this be due to my filter setup?
Will adjusting the OP1 filter bring my transmit frequency back?
Do I need to move the filter up or down?
Will changing KSB2 R14 from 1k to 2-3K help the Ten Tec mike drive the KSB2?

All help greatly appreciated.

73 de NA8M
John