Re: [Harp-L] On/off switch vs. volume pot

[Tim Dougherty <timd@xxxxxxx>]

Wow, you win the prize for most electronics in a single shell!  How are the 
components mounted?

Tim Dougherty
www.HarpMicGaskets.com


At 06:05 PM 3/9/2005, you wrote:
> Here is some info from Tom "Frankenmic" Austin of SoCal about the mic he 
> built which I use.  Among other things,  it retains its uniquely funky 
> sound at diff volume pot levels.  I ain't no tecchie and this is not very 
> informative to me, I just LOVE the mic, and its tone doesn't vary much, if 
> at all, when I roll down the volume.   As it seems you have some technical 
> knowledge, it may explain itself to you, hope it may help:
>
> Early 1950's 707A Shure casing with mid-'70's R5D controlled magnetic 
> cartridge with 22K S parallel to ground resistor.    1 meg ohm Audio taper 
> volume pot with 110 pf cap to retain glassiness when volume is rolled off, 
> and 2200 pf cap with 5.11KS 1% resistor for bite and overdrive, and EQ mix 
> consistency at volume rolloff.
> ###
>
>
>
> At 01:00 PM 3/9/2005, Bob Maglinte wrote:
>
> > ----- Original Message ----- From: "Russ Bradley" <wbradley@xxxxxxxxxx>
> > To: <harp-l@xxxxxxxxxx>
> > Sent: Wednesday, March 09, 2005 1:57 PM
> > Subject: [Harp-L] On/off switch vs. volume pot
> >
> >
> > > Does an on/off switch have less of an impact on a mic's tone than a 
> > > volume pot, or does it have an equivalent impact to a volume pot?
> > > Thanks,
> > > Russ
> >
> > Hi Russ,
> > It partly depends on the value of the pot and the cartridge being used.in 
> > the mike. If you're using a mike with a crystal or ceramic element, which 
> > is ultra high impedance, and the correct pot value is at least 1 megaohm, 
> > and for CR/CM/dynamic, it is usually 500K ohms. The only thing is when 
> > you roll down the pot, you may notice some mids and highs lost, but your 
> > hearing my vary. The "Rod Piazza mod" is to get a low value capacitor so 
> > that when you roll th pot down, it will keep the mids and highs there 
> > like it was when the pot was all the way wide open.
> >
> > Sincerely,
> > Barbeque Bob Maglinte
> > Boston, MA
> > http://www.barbequebob.com
> > MP3's: http://music.mp3lizard.com/barbequebob/
> >
> >
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