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Discussion Starter #1
Currently, my front speakers are mirage speakers OMD-28 Floorstanding Speaker with the following specs below. On my Onkyo 805, I set at 4ohms. The ohm setting go across all speakers. I don't use the amp from the AVR but an Emotiva XP-5.



Impedance 6 Ohms nominal / 3.5 Ohms minimum




I bought some satellite speakers for the rear to do some testing. The specs are below. So what ohm should I set that would make every speaker happy? The onkyo AVR has 4 or 6 ohm. Sorry for the newbie questions.



Minx Min 11 Speaker


Impedance: 8 Ohms compatible


Frequency Response: 120Hz-20kHz


Thank you.


Tractng
 

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Quote:
Originally Posted by tractng  /t/1525883/ohm-questions#post_24569177


Currently, my front speakers are mirage speakers OMD-28 Floorstanding Speaker with the following specs below. On my Onkyo 805, I set at 4ohms. The ohm setting go across all speakers. I don't use the amp from the AVR but an Emotiva XP-5.



Impedance 6 Ohms nominal / 3.5 Ohms minimum




I bought some satellite speakers for the rear to do some testing. The specs are below. So what ohm should I set that would make every speaker happy? The onkyo AVR has 4 or 6 ohm. Sorry for the newbie questions.



Minx Min 11 Speaker


Impedance: 8 Ohms compatible


Frequency Response: 120Hz-20kHz

It doesn't matter. The satellites will be fine.
 

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Discussion Starter #3

Quote:
Originally Posted by arnyk  /t/1525883/ohm-questions#post_24569186


It doesn't matter. The satellites will be fine.

My guess is it doesn't matter since the amp covers the range? So leave at 4 ohm?
 

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If you arent using the receiver's built-in amps, it doesnt matter what you set it at, the setting will only affect the built-in amps.
 

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Discussion Starter #7
Quick update. I replaced my floorstanders to bookshelf Kef LS 50 and looking to just use the AVR internal amp now (selling the emotiva amp). What do I choose on the AVR ohm setting 4 or 6? Thanks again.


The spec on the Kef LS50:


• Design: Two-way bass reflex

• Drive units:

• HF: 25mm (1in.) vented aluminium dome

• MF: 130mm (5.25in.) magnesium/ aluminium alloy

• Crossover frequencies: 2.2kHz

• Frequency response (±3dB): 79Hz - 28 kHz

• Frequency range (-6dB): 47Hz - 45kHz

• Maximum output (SPL): 106dB

• Sensitivity (2.83V/1m): 85dB

• Amp Requirements: 25-100w

• Nominal impedance: 8Ω (min. 3.2Ω)


Onkyo 805 AVR

130 W + 130 W (8 ohms, 20 Hz20 kHz, 0.05%, 2 channels driven, FTC)

150 W + 150 W (8 ohms, 1 kHz, 0.7%, 2 channels driven, FTC)


Dynamic Power

300 W (3 ohms, 1 ch)

250 W (4 ohms, 1 ch)

150 W (8 ohms, 1 ch)
 

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Discussion Starter #9

Quote:
Originally Posted by Eyleron  /t/1525883/ohm-questions#post_24631128


If your speakers were all 8 ohms now, why would you question whether the receiver should be set to 4 ohms?

Previously, I was using an external amp. Now looking to use an internal amp. I thought maybe using an internal amp requires a different setting. I will stick with 6 ohm setting on the AVR.
 

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Quote:
Originally Posted by tractng  /t/1525883/ohm-questions#post_24631563


Previously, I was using an external amp. Now looking to use an internal amp. I thought maybe using an internal amp requires a different setting. I will stick with 6 ohm setting on the AVR.

While it probably won't make much difference, what you are doing is on the negative side of things. The 6 ohm setting actually cuts amplifier power in the same way a governor regulates the speed of an engine. You may as well have all the power availalle regardless of the impedance of the speakers.
 

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Discussion Starter #11

Quote:
Originally Posted by FMW  /t/1525883/ohm-questions#post_24631622


While it probably won't make much difference, what you are doing is on the negative side of things. The 6 ohm setting actually cuts amplifier power in the same way a governor regulates the speed of an engine. You may as well have all the power availalle regardless of the impedance of the speakers.

Got it.
 
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