A low-pass filter on the output works well, and is easy to construct if the power is reasonable! A 3-pole Chebyshev filter works well.
In the datasheets for these amplifiers there's usually a recommendation to do as much unless the cable to the speaker is very short (ie. built into the unit). 73 de Thomas M0TRN On 30 April 2011 10:48, Sverre Holm (LA3ZA) <[email protected]> wrote: > Be aware that class-D (digital) audio amplifiers like this, in combination > with long loudspeaker wires, don't always go so well with amateur radio. > Sometimes they radiate well into the lower short-wave range. Unless of > course, you turn off the stereo whenever you turn on the radio ... > > > Phil Townsend wrote: > > > > Tripath based diy kit > > These sound VERY good and cheeep! > > > > http://diyparadise.com/charlize2.html > > > > -----Sverre, LA3ZA > > K2 #2198, K3 #3391 > LA3ZA Unofficial Guide to K2 modifications -- > View this message in context: > http://elecraft.365791.n2.nabble.com/OT-Hi-Fi-audio-amplifier-kit-tp6315361p6319224.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
