kenratboy Posted December 28, 2001 Share Posted December 28, 2001 Would I hurt my 5-channel receiver (Sony STR-DE675) is I was running three, 8 ohm speakers in the front and two 6 ohm speakers for the surrounds? I only plan to do this at low levels and it would not be permanente. Thanks! Quote Link to comment Share on other sites More sharing options...
matthew2 Posted December 28, 2001 Share Posted December 28, 2001 Im not sure on this 100%, but you have a reciever with 5 amps in it. They should be able to handle 6 ohms. It won't really make a diffrence, exept you may get a diffrent output level from the rear speakers, because of the impendence. Depending on your speakers you may not even notice the diffrence. I do not see anything wrong with it ------------------ Matthew Gatta' love klipsch Quote Link to comment Share on other sites More sharing options...
Malcolm Posted December 28, 2001 Share Posted December 28, 2001 You should be OK. What does the manual say? Quote Link to comment Share on other sites More sharing options...
TheEAR Posted January 2, 2002 Share Posted January 2, 2002 kenrat, There is no danger at all,you could even run all 6 Ohms speakers.Any reciever(unless the $99 X-Mart type)can drive 6 Ohms speakers to even quite high levels. Just be sure cooling is good( and the reciever does not overheat. TheEAR(s) Now theears Quote Link to comment Share on other sites More sharing options...
Guest BobG Posted January 2, 2002 Share Posted January 2, 2002 High quality amplifiers have greater current capability than do lower quality designs. Two amps can have the same wattage (power) rating into 8 Ohms, but may have vey different current capability. Speaker impedance rating is an average since impedance changes with frequency. A typical 8 Ohm speaker may vary from 4 Ohms to 50 Ohms across its frequency spectrum. A 6 Ohm speaker likely has a lower minimum impedance than does a speaker rated at 8 Ohms. High quality (lots of current capability) amps have no problem with this. Low quality amps do not have the current to properly drive the speaker at its lowest impedance points and the sound deteriorates. The situation you describe above is not dangerous, but if your amp is a low current design, the sound might not be as good as with higher impedance speakers. High power amps have both high output voltage and high output current - but that is expensive to build and many amps don't stack up. Some amps today are rated for power at 6 Ohms rather than the 8 Ohm standard. This does not indicate they can drive lower impedances, it's a cheat as running into 6 Ohms makes the amp appear more powerful. If two amps are rated at 100 watts, but one is at 8 Ohms and the other at 6 Ohms, the 8 Ohm rated amp is actually more powerful. As impedance drops it will make more output. Running multiple speakers in parallel on a single channel (say 2 for center channel or such) is where impedance drops dangerously low. Most amps have low iimpedance protection circuitry so that they'll shut off before damaging themselves or the speakers they are connected to. Quote Link to comment Share on other sites More sharing options...
TheEAR Posted January 2, 2002 Share Posted January 2, 2002 On fewer words BobG...ALL SHOULD OWN KRELL AMPS(real amps that can drive almost any realistic and unrealistic load with ease) TheEAR(s) Now theears Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.