regedit 45 Posted February 3, 2011 Share Posted February 3, 2011 Front speakers are 4 ohms. Centre and rears are 6 ohms. Does the Amp switch really need to be set to 6 ohms ? Wondering if I'll lose anything by doing so. Thanks. Link to post Share on other sites More sharing options...
Crossy 44121 Posted February 3, 2011 Share Posted February 3, 2011 If you have a switch it should be set to match the LOWEST impedance speakers (set to 4 Ohm). You will lose a little power driving 6 Ohm speakers from a 4 Ohm output but most likely not noticeable, even less so as these are the centre and rear drivers (if you do notice you probably need a bigger amp ). Link to post Share on other sites More sharing options...
JackA 1 Posted February 7, 2011 Share Posted February 7, 2011 Before doing anything - please this article, which will give you an insight into the wonderful world of impedance switches and what they do: http://www.audioholics.com/education/amplifier-technology/impedance-selector-switch-1 I have been in the same situation as you, but ended up going with separate power amp. Link to post Share on other sites More sharing options...
regedit 45 Posted February 9, 2011 Author Share Posted February 9, 2011 Thanks - good read. Looks like I can keep the setting at 8 ohms to drive my 4 and 6 ohm speakers. Link to post Share on other sites More sharing options...
astral 420 Posted February 9, 2011 Share Posted February 9, 2011 Just to confuse you even more. The impedance of a speaker can vary wildly across the frequency range. http://www.churchsoundcheck.com/imp1.html http://www.deltamedia.com/resource/impedance.html Link to post Share on other sites More sharing options...
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