Oh, a subject on AS where I can claim authority! Might be the only time, have to enjoy this!
In plain letters I would try like this:
jonn-se-reed
hus-kvaar-na
It´s a bit difficult thogh, cause I really can´t think of an English word with sounds similar to the double "ee", but the double "aa" sounds similar to the "a" in "hard".
Or you can hear me say it (it's plain windows .wav-files, but I do have a lousy mic.):
http://lasse.ringh.nu/sounds/Jonsered.wav
http://lasse.ringh.nu/sounds/Husqvarna.wav
However, with all languages, the right pronounciation on foreign words is really when what you say gets understood in that context by the people you are saying it to: Husky and Johnny Red works just fine.
Both brand names are the names of the town (Husqvarna) or village (Jonsered) where the factories started out. Husqvarna is made out of the Swedish words for "house" (hus) and "mill" (kvarn). Don´t really know why it gets an "a" at the end though, and the "q" instead of the "k" is just to make it look fancier when it´s a brand name. Jonsered is just a name.