I knew this was going to turn into "why do you need all that audio gear" 
discussion.
Never mind. Thanks for your input.
I guess i'll just ask Eric or Wayne next Friday at Dayton.
__________________
Slava (Sal) B, W2RMS
w2...@arrl.net

On May 9, 2014, at 8:23 PM, Jim Brown <j...@audiosystemsgroup.com> wrote:

> On 5/9/2014 4:40 PM, Slava Baytalskiy wrote:
>> By "my audio stuff" i mean a mic.
>> I'm using a Shure SM58, into a mic preamp, into a 
>> gate/compressor/limiter/de-esser into an EQ into a mixer into the K3's 
>> line-in.
> 
> Hi Slava,
> 
> A de-esser works in the 6-8 kHz range, and you need it in a studio, 
> especially with mics like the SM58 that are sibilant, it's totally useless 
> for ham radio. If you want to use an SM58, you can run it straight into the 
> front panel mic input with a suitable adapter -- pin 2 of the XLR is hot, pin 
> 3 and pin 1 get tied together and go to the connector shell. The K3 has 
> excellent EQ and compression built in, so you've got a lot of stuff there 
> that you don't need.
> 
> The SM58 is an singer's vocal mic, it has proximity effect, which adds a lot 
> of bass that must be equalized out. Pro mics are overkill for ham radio (in 
> terms of cost), but if you want to use one, go for one of the EV variable-D 
> mics -- RE10, 11, 15, 16, 18. No proximity effect, no sibilance.
> 
> Another issue with trying to use a pro mic in ham radio is that ham mics have 
> presence peaks around 3 kHz to compensate for the rolloff of the crystal 
> filter, so you must add that with an equalizer. The TXEQ in the K3 works VERY 
> well for that.  Before W6XU turned me onto the Yahama CM500 headset, I was 
> using an RE16 from my stash of recording mics, on an AKG boom. Worked fine, I 
> got great reports, but the CM500 is $60, and sounds great too.
> 
>> So line-in is taken. I can't put a Y cable there because, correct me if i'm 
>> wrong, every time Signalink would key up - the mic would go live.
>> So that's not an option for me.
>> I think its a lot easier to just hit a couple of buttons and switch to the 
>> front panel mic for digital work, isn't it?
>> And the rear mic won't go live either.
>> 
>> As far as audio interface goes, yes, i have an E-mu 0404 USB that i can use. 
>> But signalink works just fine. No drivers to install. And it has just enough 
>> controls.
> If you're happy with it, use the Line In. But remember that it has a Pin One 
> Problem, so you could run into RFI with it.
> 
>> I really don't see why i would need a studio quality sound card for PSK31.
> 
> See my exchange with N7WS about that in this thread -- a better sound card 
> can improve linearity at the bottom of the dynamic range. In fact, you need a 
> decent USB sound card a LOT more than all that outboard gear. The 0404 is 
> overkill, although nice if you want to feed a spectrum display using NaP3. 
> The Signal Link may be good enough -- the cheap Numark and somewhat nicer 
> Tascam certainly are.
> 
> I use the CM500 plugged into the rear panel mic and headphone jacks, assign 
> the "Headphones + Speaker" toggle to one of the PF keys. That lets you use 
> the K3's excellent audio processing, get rid of all that outboard gear, and 
> makes it very easy to switch from SSB to digital modes.
> 
> 73, Jim K9YC
> Retired audio professional
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