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dangerdan · 04-05-2008, 12:43 AM

Just a suggestion for you guys that have the Harmon Kardon system and are planning on using headsets / earphones.
TURN THE VOLUME AS LOW AS POSSIBLE AS A PRECAUTION BEFORE PLUGGING IN YOUR HEADSET/ EARPHONE

Harmon Kardon systems are rated at 40 watts ... Thats a lot of power. I tried to get some info on their site as to how much power went to each speaker. Just got total power of 40 watts.

Lets assume for this discussion its 20 watts to the left and 20 to the right speaker.

I used this site "mediatech.com" as a reference for headset and earphone stats. Headsets / earphones are designed to work thru a seperate amp which reduces power and matches heaset ohms to amp ohms.

Max input power to a headset is 100 milliwatts or 1/10 of one watt.
Max input power to a earphone is 10 milliwatts or 1/100 of one watt.

Depending on how this is done you could end up running full power through your headphone / earphone. Now, I have never tried this , but if you do the math you could possibly blow your headset and THAT VERY EXPENSIVE RADIO.

04-05-2008, 12:43 AM	#18 (permalink)
dangerdan Community Star Join Date: 2007, Oct 14 Location: Ontario Posts: 466 My Mood:	Re: installing headphone jack Just a suggestion for you guys that have the Harmon Kardon system and are planning on using headsets / earphones. TURN THE VOLUME AS LOW AS POSSIBLE AS A PRECAUTION BEFORE PLUGGING IN YOUR HEADSET/ EARPHONE Harmon Kardon systems are rated at 40 watts ... Thats a lot of power. I tried to get some info on their site as to how much power went to each speaker. Just got total power of 40 watts. Lets assume for this discussion its 20 watts to the left and 20 to the right speaker. I used this site "mediatech.com" as a reference for headset and earphone stats. Headsets / earphones are designed to work thru a seperate amp which reduces power and matches heaset ohms to amp ohms. Max input power to a headset is 100 milliwatts or 1/10 of one watt. Max input power to a earphone is 10 milliwatts or 1/100 of one watt. Depending on how this is done you could end up running full power through your headphone / earphone. Now, I have never tried this , but if you do the math you could possibly blow your headset and THAT VERY EXPENSIVE RADIO.