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#424953 - 04/14/17 04:41 PM New Axiom Owner..need some advice!
Eric45 Offline
regular

Registered: 04/14/17
Posts: 7
Loc: Peoria, Illinois USA
Hey all.. I just ordered the M80's. The AV receiver I have (given to me as I'm just starting out) is a Yamaha HTR-5450. It has a switch on the back for 4 ohm speakers. Should I use this, or leaving it on the 8 ohm setting work also? Any info or help regarding what I can or can't do without hurting the speakers or receiver would be greatly appreciated!! My uncle has a sweet all Axiom setup....hence why I didn't even look at another brand of speaker. Thanks again!

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#424957 - 04/14/17 05:23 PM Re: New Axiom Owner..need some advice! [Re: Eric45]
MatManhasgone Offline
connoisseur

Registered: 05/06/14
Posts: 1030
Loc: Lost in the great wide yonder
I would flip the switch as the M80 are rated at 4ohms. this is likely a limiter of some sort so that you don't over drive the power supply by pulling more current that it can handle. ie it might limit the volume that you can get so you don't melt the receiver.
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Anthem: AVM60
Axiom: ADA1000, LFR1100, VP180, QS8, EP500, M3, M3comp
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#424958 - 04/14/17 05:33 PM Re: New Axiom Owner..need some advice! [Re: MatManhasgone]
Eric45 Offline
regular

Registered: 04/14/17
Posts: 7
Loc: Peoria, Illinois USA
ok..thanks! I was a little confused considering I've heard you can run them on 8 ohms but not for a very long time at high levels.

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#424962 - 04/14/17 06:26 PM Re: New Axiom Owner..need some advice! [Re: Eric45]
brendo Offline
devotee

Registered: 10/14/14
Posts: 383
Loc: West coast Canada
They say to keep that switch to the higher setting, as it will actually limit your receiver. The speakers have more freedom or range with the higher setting

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#424965 - 04/14/17 08:44 PM Re: New Axiom Owner..need some advice! [Re: brendo]
Eric45 Offline
regular

Registered: 04/14/17
Posts: 7
Loc: Peoria, Illinois USA
thanks...thats what most people were saying in a post I was reading...I'll try it both ways to see if I can tell a difference. Don't know how loud I will usually listen so it might be fine on the 4 ohm setting. IF it doesn't get too hot on the 8 ohm setting after having it turned up for a bit, I'll probably leave it there.

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#424970 - 04/14/17 09:58 PM Re: New Axiom Owner..need some advice! [Re: Eric45]
Mojo Online   content
connoisseur

Registered: 01/21/07
Posts: 4919
Don't change the impedance selector unless in standby.

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#424971 - 04/14/17 10:03 PM Re: New Axiom Owner..need some advice! [Re: Eric45]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10634
Eric, welcome to Axiom. Despite any suggestions to the contrary in the owners manual or elsewhere, never set the receiver to the lower impedance setting. Leave it at the default. The provision of a lower setting is due to safety regulations of Underwriters Laboratories. The receiver would overheat if being tested into a 4 ohm load continuously(which your speakers don't do)at full rated power. The lower setting reduces the available voltage from the receiver power supply section so that full power isn't available and overheating is less likely. Tests have shown that this can roughly cut the maximum power capability in half and make clipping more likely. Bad move; don't even try it.
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Enjoy the music, not the equipment.



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#425055 - 04/17/17 10:26 AM Re: New Axiom Owner..need some advice! [Re: Eric45]
alan Offline

connoisseur

Registered: 01/29/02
Posts: 3267
Loc: Toronto/New York/parry Sound
Hello Eric45,

JohnK is absolutely correct. Leave your receiver on the 8-ohm setting, otherwise the available power will be severely limited using a 4-ohm setting. And, like some other newcomers who've posted here, do not turn the volume control "all the way up" to test the output limits, as this may drive the receiver into clipping, which can toast your M80s' drivers with a distorted clipped signal.

If your receiver's volume setting is calibrated in decibels (dB), then "0 dB" is the approximate maximum output capability. Don't test it by cranking it to that setting.

Regards,
Alan
_________________________
Alan Lofft,
Axiom Resident Expert (Retired)

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#425062 - 04/17/17 07:41 PM Re: New Axiom Owner..need some advice! [Re: alan]
Eric45 Offline
regular

Registered: 04/14/17
Posts: 7
Loc: Peoria, Illinois USA
Thanks for all the info fellas! So what other steps can i take to make it more likely that I won't hurt them. If i added an amp, would that give me the ability to "turn it up "as loud as I want with out hurting them? Thoughts?

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#425065 - 04/18/17 01:59 AM Re: New Axiom Owner..need some advice! [Re: Eric45]
Ian Online   content
President
connoisseur

Registered: 03/13/01
Posts: 1184
Hi Eric45,

A big power amp like the ADA1500 will allow you to play your M80s very loud without any distortion. There is always a limit and always a way to push the limit higher right up until you end up with LFR1100s driven with a dedicated ADA1500-2 amplifier per speaker. But having lived with M80s driven with an ADA1500 amplifier, I can say with confidence you will be blown away.
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Ian Colquhoun
President & Chief Engineer

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