[Elecraft] more Bass in K3 with PR-40

[Lu Romero]

Can I add my "AMEN" to the thoughts below?  

I also use a CM500 after dialing in some EQ and processing
and, especially, TX GATE for my rather noisy operating
environment (its either the garage next to the laundry or no
shack, so I make do!)

Although I do find it fun to test the AM capability of my
receivers listening to ESSB guys.  Some have enough energy
past the carrier frequency that you can demodulate their
signals in AM... All that bass creates a phantom carrier. 
These guys were ahead of their time in the unintended
implementation of MDCL technology (Modulation Dependent
Carrier Level, a way of saving electricity at AM stations
newly blessed by the FCC for broadcasters).

My station on air sound may not be very "manly", as an ESSB
guy once told me on the air, but in most cases, the other
guy tends to copy me well...  And that is what this game is
all about, right?

-lu-w4lt-
K3/P3/K1


======================


Message: 18
Date: Tue, 19 Jun 2012 12:39:50 -0700
From: Jim Brown <jim at audiosystemsgroup.com>
Subject: Re: [Elecraft] more Bass in K3 with PR-40
To: elecraft at mailman.qth.net
Message-ID: <4FE0D586.3050101 at audiosystemsgroup.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Second, while I don't know the specifics of the Heil mics,
I'd guess 
that there's a strong presence peak around 3 kHz to
compensate the 
rolloff produced by crystal filters in both the TX and the
RX. This is 
also good engineering practice, but taken too far can be too
bright. The 
easy solution in the K3 is to use some cut on the highest
(and perhaps 
next to highest) filters.

Third, a little proximity effect goes a long way, and
proximity effect 
is VERY sensitive to distance. Proximity effect also
increases breath 
pops and handling noise.  When you work a mic TOO close,
proximity 
effect will cause the lows to get louder and softer with
very small 
changes in distance from your mouth. I use a Yamaha CM500,
and keep it a 
few inches above and to the side of my mouth so that breath
pops don't 
hit it (and so that I can swig coffee). I have the TXEQ and
compression 
adjusted for competitive contesting and DX audio, and I get
reports of 
great audio.

Like Joe and Scott, I'm a retired broadcast and pro audio
engineer, and 
I own several dozen pro mics, but I use the $40 Yamaha in my
ham station.