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-   -   Shed a little light pls:) (https://www.diyaudio.com/forums/full-range/242008-shed-little-light-pls.html)

msj965 5th September 2013 06:09 PM

Shed a little light pls:)
 
What is the best way to set my amps speaker output impedance. I have a 6 ohms tower speakers but I don't know if 8 or 4 ohms will be the setting. I dont wanna fry my amps. thanks

ann

richie00boy 5th September 2013 06:21 PM

Setting the amp to 4 ohms would be the safest, if that is your main concern. Assuming it's not a valve amp.

chris661 6th September 2013 10:17 AM

I'd say set it to 4ohm, sounds like it is a valve amp - we probably wouldn't be having this discussion if it were solid-state.

6ohm nominal will likely drop to 4ohm in places, so I'd consider the 4ohm tap more appropriate.

mondogenerator 6th September 2013 03:22 PM

Id set to 4 ohm

The onset of THD is more gradual (so they say) and its safer for your tubes

tuxedocivic 6th September 2013 05:11 PM

I once used a Yamaha receiver that had a 4ohm setting. That was about 7 years ago. I guess it couldn't handle 4ohms well or something. Anyways, it was terrible on that setting. Really cut the power output.

But I don't really know amps at all. Tube amps confuse me even more.

balerit 6th September 2013 07:23 PM

Try the 8 ohm first as 4 ohms will double the load on the power supply and transformer.

richie00boy 6th September 2013 07:32 PM

Quote:

Originally Posted by balerit (https://www.diyaudio.com/forums/full-range/242008-shed-little-light-pls-post3622444.html#post3622444)
Try the 8 ohm first as 4 ohms will double the load on the power supply and transformer.

It's his amp not speaker that can be set.

balerit 7th September 2013 05:31 AM

Shot:up:.

AllenB 7th September 2013 10:18 AM

Valve amps tend to be sensitive to over-voltage (from a lighter load) the way a solid state amp may not like over-current (from a heavy load), so while a higher apparent load impedance may be a sonic choice I'd stop short of declaring it a 'safer' option with a valve amp.


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