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.
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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/
_______________________________________________ Harp-L is sponsored by SPAH, http://www.spah.org Harp-L@xxxxxxxxxx http://harp-l.org/mailman/listinfo/harp-l
_______________________________________________ Harp-L is sponsored by SPAH, http://www.spah.org Harp-L@xxxxxxxxxx http://harp-l.org/mailman/listinfo/harp-l
_______________________________________________ Harp-L is sponsored by SPAH, http://www.spah.org Harp-L@xxxxxxxxxx http://harp-l.org/mailman/listinfo/harp-l