Line level attenuators

Archived from groups: rec.audio.pro (More info?)

My question is:

Does the resistor value tolerance factor into the audio characteristics. i.e.
does a 1% resistor have an advantage over the 5%?

They would be used to attenuate the DI input on my VMP-2 and/or GR DI's down to
a usable line level. Because of the DI's being for instruments, I find a
normal +4 line level to sometimes be too high. The alternative is to run the
line level through a Countryman into the mic input and that seems like to much
processing to me.



--Wayne

-"sounded good to me"-

Archived from groups: rec.audio.pro (More info?)

Thanks Mike for the reply. That and the info I found on Google got my answer.

I'll let you get back to Phil now. :> )

Wayne

>In article <20040907133846.20060.00001979@mb-m25.aol.com> ybstudios@aol.com
>writes:
>
>> Does the resistor value tolerance factor into the audio characteristics.
>i.e.
>> does a 1% resistor have an advantage over the 5%?
>
>> They would be used to attenuate the DI input on my VMP-2 and/or GR DI's
>down to
>> a usable line level.
>
>You can look up the recent (maybe still current) thread about mic
>attenuators and hear all sorts of arguements. The practical answer is
>that this is not critical and you can use any resistors you can find.
>
>A DI input is unbalanced so the issue of common mode rejection that is
>a valid aruging point with a balanced mic line goes away.
>
>Now, do you want someone to give you the values of resistors? You probably
>want the series resistor to be somewhere between 10K and 20K ohms,
>and cut-and-try shunt resistors until you cut the level down to what you
>need. It will probably be around 3K to 5K.
>
>Of course if you want a balanced line input, you'd best get that by
>attenuating the signal by 30 dB or so and going into the mic input. In
>which case tolerance, or at least matching of the series resistor in each
>leg becomes more important.
>
>
>--
>I'm really Mike Rivers (mrivers@d-and-d.com)
>However, until the spam goes away or Hell freezes over,
>lots of IP addresses are blocked from this system. If
>you e-mail me and it bounces, use your secret decoder ring
>and reach me here: double-m-eleven-double-zero at yahoo
>
>
>
>
>
>
>