On Tue, 22 Apr 2003 17:30:46 +1000, "Hughy" <antispam@spamkiller.net> wrote:

>One of our MKE-300's finally developed an intermittent internal broken

>conductor, so whilst repairing it, I finally installed a 6dB pad during the

>repair (better level matching for VX2K's input AGC).

>

>There's not a lot of room for extra components inside the MKE300 barrel and

>the circuit board has a middle layer, complicating additions onto the PC

>board. I'd initially designed an L pad, but dropped that in favour of a

>simple single series resistor, 6.8K, soldered in series with centre

>conductor tail (due to the limited space available).

>

>The audio sounded pretty much unchanged and the VX2000 V/F level display

>suggested the input amp was now operating (as expected) noticeably further

>down the knee. So - looking OK, haven't used it on a shoot yet, though.

>

>But .... have I overlooked any issues arising from such a simple series pad?

>Is anyone using more than 6dB? Does this give an improvement under average

>use?

>

>Regards,

>Hughy.

This mic needs about a 6db pad to better-match the VX2000's

AGC (though it is better used without the pad when using

the VX2000 manual level control for noise optimization - but

that VX2000 AGC is SO good, and it keeps me out of trouble

SO often......;-). I do not remember the mic's output

impedance, but whatever it is, you have likely just raised

it a lot, which may, or may not, have noticeable

consequences. Look for increased noise and slight changes in

response (neither of which may be bad enough to worry about,

though...;-).