[blackburst]

On Aug 15, 6:35*pm, "William Sommerwerck"
wrote:
What you're asking for a is device that is basically Audio Engineering
101 -- a simple (hah!) attenuator.

Rather than explain how to do this -- it is not _mathematically_ difficut --
why don't you do some research into attenuator design? There are several
design factors that might not be obvious:

1. What is the load the device driving the attenuator sees?
2. What is the minimum load impedance the device can see and still have its
spec'd output, distortion, etc?
2. How does the output impedance of the device interact with the
attenuation?
4. What is the source impedance the load sees?

This is stuff you need to understand to improve your engineering skills. I
urge you to get some literature on basic design and study it.

I'd love to. I was deep in the audio field (home recording, studio
recording, making radio commercials) when I stumbled into television.
Since then, I applied most of my available learning time to designing
and building TV and video facilities. To complicate matters, wew are
in the midst of a change from analog/SD to digital/HD, and that takes
a lot of my time. (By the same token, I missed some of the audio
switchover to digital. My last working home system was ADATs, just
prior to ProTools and the like.)

I can do most anything at the operator level, like setting a wireless
transmitter at the right level, and setting the receiver output and
camcorder input to the right levels, but I don't have the time or
chops to get all the minutiae of the engineering level (audio). Yes, I
fall back on interface boxes. I'd be screwed without Ocean Matrix,
Kramer, Henry Engineering and the like. But don't tell my bosses or
clients that...

All kidding aside, you guys are right. I'll try to do better.