Auto Cal question - Perform at 8 ohm or 4 ohm - AVS Forum
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post #1 of 5 Old 12-29-2008, 07:33 AM - Thread Starter
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Hey Guys! Hope everyone had a holly jolly Christmas.

I've tried asking this in the Sony receiver thread, but I havent gotten a respnose. Anyway, here's my question:

I've got a STR DG1000 AVR which gives you the option of setting it to 4 or 8 ohms depending on your speaker setup. Recently, when running my Auto-Cal function again, I had the receiver set to 4 ohms.

(As an aside, my front three speakers are 8 ohms, but the satellites (x4) are all 6 ohms, so I set my receiver to 4 ohms at the suggestion of another AVSer).

It seems like I've noticed some dips and peaks in the sound response from my speakers, meaning that some of them are exceptionally loud or soft when i wouldnt expect them to be. Is this the result of running auto-cal at 4 ohms? Would it be preferable to set the receiver to 8 ohms when running auto-cal, then switching to 4 ohms after setting the levels; or should I just leave it at 8?

Any help is appreciated.

Thanks!
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post #2 of 5 Old 12-29-2008, 08:10 AM
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Typical advice is to always use your system with the selector at 8ohms. This would inlcude during auto cal.
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post #3 of 5 Old 12-29-2008, 08:27 AM - Thread Starter
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alright. can do. Any way you could elaborate on the reasoning there? Just for my own knowledge? Thanks!
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post #4 of 5 Old 12-29-2008, 08:46 AM
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Quote:
Originally Posted by bdwright77 View Post

alright. can do. Any way you could elaborate on the reasoning there? Just for my own knowledge? Thanks!

Since the front three will be handling more power than the surrounds, the impedance should be optimized for them.

Kal Rubinson

"Music in the Round"
Senior Contributing Editor, Stereophile
http://www.stereophile.com/category/music-round

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post #5 of 5 Old 12-29-2008, 08:48 AM - Thread Starter
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alright, thanks guys! I'll redo the auto-cal and keep it at 8 ohms. Thanks for the advice.

Happy New Year!
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