tommyboy Posted April 18, 2005 Share Posted April 18, 2005 Is it a big deal if your receiver is rated at 6 ohms, but your speakers are 8 ohms??? Quote Link to comment Share on other sites More sharing options...
lynnm Posted April 18, 2005 Share Posted April 18, 2005 No. That amp's rating is simply a ( probably exaggerated ) statement of its maximum power output into a 6 ohm load.If the impedance of the speakers drops below 6 ohms ( a relatively rare event ) then the amp will be called upon to deliver a little more power...Assuming of course that it has the capability of doing so. If the amp does not have the ability to provide the extra power then you will get greater distortion. On the other hand if the speakers present a higher impedance then the power output of the amp will be reduced ( a very common occurence ). The impedance ( the AC equivalent of resistance ) varies with frequency and is not by any means a constant value. Klipschorns for example which are rated as 8 ohm speakers can range anywhere from about 5 ohms impedance to 60 ohms depending on the frequency of the input signal. Quote Link to comment Share on other sites More sharing options...
MrMcGoo Posted April 18, 2005 Share Posted April 18, 2005 Most receivers are rated to run speakers from 6 to 16 ohms. If you have an 8 ohm speaker, it should work well on a receiver rated from 6 to 16 ohms. Trouble starts when someone wants to run 4 ohm speakers on a receiver rated down to 6 ohms. The receiver may run hot and/or may shut down. Only a few brands of receiver are rated to run 4 ohm speakers, while nearly any separate amp will run 4 ohm speakers. Nill Quote Link to comment Share on other sites More sharing options...
fini Posted April 18, 2005 Share Posted April 18, 2005 "How much do ohms matter?" Cripes, enough for there to be a law!! Quote Link to comment Share on other sites More sharing options...
3dzapper Posted April 18, 2005 Share Posted April 18, 2005 Quote Link to comment Share on other sites More sharing options...
ZAKO Posted April 19, 2005 Share Posted April 19, 2005 That law cannot be broken. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted April 19, 2005 Share Posted April 19, 2005 it doesn't matter a bit, just dingo's kidney's My dad (an engineer) used to have a sign over his desk " WARNING 10,000 OHMS" (it's a joke, the double engineer types will get it) Michael Quote Link to comment Share on other sites More sharing options...
krustyoldsarge Posted April 19, 2005 Share Posted April 19, 2005 Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted April 19, 2005 Share Posted April 19, 2005 actually my local hi-fi tech told me that if I switched my Yammie from 8 ohms to 6 ohms, there is a computerized protection circuit that would help 'save' my amplifier from overheating if I overdrive it. Something about it comparing the amount of power being requested from each channel and backing off if some limit was reached. Makes some sort of sense. There is no way you can get 130 watts x 7 out of a box that takes in like 300 watts. Not for long anyways.... Michael Quote Link to comment Share on other sites More sharing options...
krustyoldsarge Posted April 19, 2005 Share Posted April 19, 2005 BTW Michael, how ya been? You was in the dumps earlier.... I'll look at that after I do the YPAO. I finally moved my system into the living room (with a lot of help from my beer buddy who came up to visit in order to hide from his wife). My system is a mix of 8ohm (chorus) and 6ohm (KG4). You think this would work for me? Quote Link to comment Share on other sites More sharing options...
Cal Blacksmith Posted April 19, 2005 Share Posted April 19, 2005 ---------------- On 4/19/2005 10:12:28 AM krustyoldsarge wrote: My system is a mix of 8ohm (chorus) and 6ohm (KG4). You think this would work for me? ---------------- My Yamie RX-V750 is driving a mix of 4 and 8 ohm speakers with no problems. I do have the switch set to allow mulitple valued speakers. Quote Link to comment Share on other sites More sharing options...
BobbyT Posted April 19, 2005 Share Posted April 19, 2005 Don't forget about speakers that are rated at 8 ohms but dip down to 2 or 3 ohms. The wise members of this forum recently educated me on this. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted April 19, 2005 Share Posted April 19, 2005 Sarge, set yours to 6 Ohms, the protection only comes on when you drive a bunch of channels really hard for a long time. Keeps things from heating up too much. Have you had your fan come on yet? I know a guy with HK AVR who put a bunch of computer boxer fans on top of his unit, it was getting up to 130 degrees. Yes, depression partially abated, doing better. email or msg me after you do the YPAO. Michael Quote Link to comment Share on other sites More sharing options...
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