Correct ohm speakers
Road Captain
Joined: Nov 2005
Posts: 680
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From: Seattle area
RE: Correct ohm speakers
Fluke 87 & similar meters just measure the DC resistance of the wire. That's not the AC impedance. You need an impedance meter for that. You don't really want to know the math -- it gets into reactance, imaginary numbers (j-factor), etc. No need to go there -- just look at the specs from the mfg.
Stage IV
Joined: Jul 2007
Posts: 4
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RE: Correct ohm speakers
Noob, here. Greetings.
Regarding the MP3 "skipping" issue, here's another angle on the matter: it may not be the MP3 player but the actual track-recording that is "skipping".
Here's the short version of what may be happening: if you rip and burn the tracks on a PC/notebook that is somewhat underpowered (low amount of RAM or processor speed) or being overworked (several other applications also running on your PC while you are ripping or burning the tracks) your burned track will have "skips" in them that are essentially spots in the music where your processor just plain got overloaded and could not handle al the processes and therefore ripped and/or burned that section of the track with flaws.
When you play the track in the MP3 player, that flaw comes out as a "skip" or garbled music. I have a Zumo 550 on my FLHT/CU and several weeks ago I noticed some of the tracks I loaded into the Zumo's SD card play like crap. I went nuts trying to trace the trouble until I decided to test the 1-GB SD card and play its tracks in another environment (my notebook). It turned out the faulty tracks played the same garbled faults no matter what MP3 player I used.
Moral of the story is when you are ripping and buring new music in a PC or notebook that is memory- or processor-challenged (like mine) make sure you shut down all other non-essential applications, to free up the processor and RAM to allow it to focus on your music.
My two cents.
Ride safe.
Regarding the MP3 "skipping" issue, here's another angle on the matter: it may not be the MP3 player but the actual track-recording that is "skipping".
Here's the short version of what may be happening: if you rip and burn the tracks on a PC/notebook that is somewhat underpowered (low amount of RAM or processor speed) or being overworked (several other applications also running on your PC while you are ripping or burning the tracks) your burned track will have "skips" in them that are essentially spots in the music where your processor just plain got overloaded and could not handle al the processes and therefore ripped and/or burned that section of the track with flaws.
When you play the track in the MP3 player, that flaw comes out as a "skip" or garbled music. I have a Zumo 550 on my FLHT/CU and several weeks ago I noticed some of the tracks I loaded into the Zumo's SD card play like crap. I went nuts trying to trace the trouble until I decided to test the 1-GB SD card and play its tracks in another environment (my notebook). It turned out the faulty tracks played the same garbled faults no matter what MP3 player I used.
Moral of the story is when you are ripping and buring new music in a PC or notebook that is memory- or processor-challenged (like mine) make sure you shut down all other non-essential applications, to free up the processor and RAM to allow it to focus on your music.
My two cents.
Ride safe.
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