Andy Luckman (AJL Electronics) wrote:

Can someone remind me how to do a simple job please?

I have a motorcycle (K1200LT) with loudspeakers front and rear, with
independant volume controls. These are stereo fed from a Becker readio
cassette unit up front.

I want to provide mono (L+R) feeds into a helmet without stuffing the
amplifiers or affecting the loudspeaker output. So do I use a couple of
capacitors from the two lives or what? It's so long since I played with this
sort of thing.

Because you cant asume the amp isnt bridged output you need to use 4
resistors. Using 2 may kill it.

Amp L- to helmet -
Amp R- to helmet -
Amp L+ to helmet +
Amp R+ to helmet +

via one resistor in each case. 100 ohm probably better than 220 in this
case.


NT