RIAA EQ curve in SF6 ? -Sound Forge - PC - MAGIX Community Forums Archive

Subject:RIAA EQ curve in SF6 ? Posted by: RiRo Date:11/7/2002 9:14:24 PM Howdy! Does anyone have a preset or at least the information to set up a RIAA EQ in SF6? I am also interested in the other EQ for the various 78s and the British albums as well. I use SF to take lots of stuff from turntable to digital, and having the EQ available in SF rather than my current setup, which involves either switching preamps for different vinyl, or even using another turntable for some 78s. Thanks in advance RiRo
Subject:RE: RIAA EQ curve in SF6 ? Reply by: Chienworks Date:11/7/2002 9:27:50 PM http://members.aol.com/sbench/freqres2.html http://www.euronet.nl/~mgw/background/riaa/riaa_background.html Hope these help.
Subject:RE: RIAA EQ curve in SF6 ? Reply by: Geoff_Wood Date:11/7/2002 10:38:47 PM RiRo, What you are trying to do is very flawed. A turntable cartridge output is very low (~3mv @ 1KHz) output, and very specifically requires a 47K load. So you need a proper phono preamp to get the stuff into your computer in the first place. So you don't need to EQ it (again) in SF. A moving coil cartridge is often lower impedence, and could conceivably work into a mic preamp, but these generally have a suppied transformer to bump up to 47KOhms, and arre again sensitive to load impedence... Now what WOULD be useful is a plugin that does Dolby A and SR noise reduction ! geoff
Subject:RE: RIAA EQ curve in SF6 ? Reply by: RiRo Date:11/8/2002 11:58:27 AM Howdy! Do you WANT RIAA EQ on records that were pressed without it? I don't. I have a preamp that has RIAA, and I use it for the right records. But, I could save some setup time if I could just bypass the EQ circuit and do the EQ in the computer. I don't see anything flawed about that. I suppose I could wire a switch to kick the RIAA in or out, and after looking at how complex the curve is, that is most likely what I will do. BTW, Dolby is useless in digital. The only use for this would be if you were taking something from tape or sending to tape and you did not have a deck equipped with Dolby. That said, I agree, it would be a neat plug. Just because it would not be commonly used, does not render its logic as "flawed." RiRo
Subject:RE: RIAA EQ curve in SF6 ? Reply by: RiRo Date:11/8/2002 12:01:46 PM Thanks for the links! The curve isn't going to be as simple as I had hoped. I will probably just wire a switch to the preamps and bypass the EQ when I don't need it. Soemtimes I get too focused on the digital world that I forget we can still do things in the hardware side of things... RiRo

Subject:RIAA EQ curve in SF6 ?

Posted by: RiRo

Date:11/7/2002 9:14:24 PM

Howdy!

Does anyone have a preset or at least the information to set up a RIAA EQ in SF6? I am also interested in the other EQ for the various 78s and the British albums as well. I use SF to take lots of stuff from turntable to digital, and having the EQ available in SF rather than my current setup, which involves either switching preamps for different vinyl, or even using another turntable for some 78s.

Thanks in advance

RiRo

Subject:RE: RIAA EQ curve in SF6 ?

Reply by: Chienworks

Date:11/7/2002 9:27:50 PM

http://members.aol.com/sbench/freqres2.html
http://www.euronet.nl/~mgw/background/riaa/riaa_background.html

Hope these help.

Subject:RE: RIAA EQ curve in SF6 ?

Reply by: Geoff_Wood

Date:11/7/2002 10:38:47 PM

RiRo,

What you are trying to do is very flawed. A turntable cartridge output is very low (~3mv @ 1KHz) output, and very specifically requires a 47K load. So you *need* a proper phono preamp to get the stuff into your computer in the first place. So you don't need to EQ it (again) in SF. A moving coil cartridge is often lower impedence, and could conceivably work into a mic preamp, but these generally have a suppied transformer to bump up to 47KOhms, and arre again sensitive to load impedence...

Now what *WOULD* be useful is a plugin that does Dolby A and SR noise reduction !

geoff

Subject:RE: RIAA EQ curve in SF6 ?

Reply by: RiRo

Date:11/8/2002 11:58:27 AM

Howdy!

Do you WANT RIAA EQ on records that were pressed without it? I don't. I have a preamp that has RIAA, and I use it for the right records. But, I could save some setup time if I could just bypass the EQ circuit and do the EQ in the computer. I don't see anything flawed about that. I suppose I could wire a switch to kick the RIAA in or out, and after looking at how complex the curve is, that is most likely what I will do.

BTW, Dolby is useless in digital. The only use for this would be if you were taking something from tape or sending to tape and you did not have a deck equipped with Dolby. That said, I agree, it would be a neat plug. Just because it would not be commonly used, does not render its logic as "flawed."

RiRo

Subject:RE: RIAA EQ curve in SF6 ?

Reply by: RiRo

Date:11/8/2002 12:01:46 PM

Thanks for the links! The curve isn't going to be as simple as I had hoped. I will probably just wire a switch to the preamps and bypass the EQ when I don't need it. Soemtimes I get too focused on the digital world that I forget we can still do things in the hardware side of things...

RiRo