It all depends on the source and load impedances. Coming from a 100k
plate load resistor it could well attenuate a LOT more than 12dB. IOW,
it's designed for a specific application.

On 2 Apr 2005 14:05:35 -0800, "apa" wrote:

I was looking though the manual for an Elextrix Repeater and toward the
end it has a diagram for building a 12dB attenuation cable for plugging
it into a guitar amp. It's three resistors arranged like this:


tip-------------3.9k----------tip
| |
2.2k 2.2k
| |
sleeve------------------------sleeve


From my math, this gives about -8.9dB, not -12dB.
My math's not very good though. Could someone just confirm that I'm
wrong so I can go back and look for my mistake(s)?

Thanks

Tony (remove the "_" to reply by email)