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#226775 - 10/25/08 05:19 AM Re: XPA 2 Now! A Keeper? [Re: JohnK]
SatKartr Offline
aficionado

Registered: 09/19/08
Posts: 608
Loc: Dallas
So I plugged the amplifier back into the power conditioner and have been watching the amperage drawn, the protection circuit on the emotiva reliably kicks in once the measured amperage goes above 13 amps for the entire HT system (i.e., once it measures 13.3--13.8, inaudible BOOM!), the house was built in 1989 (we moved here from an apt in 2005, yay!) and I suspect it's underpowered from past experience with the AC going out, I seem to remember most of the power lines in our home other than the wiring for 1 or 2 major appliances being rated at a maximum of 10 amps, I'm thinking an electrician might be able to help, especially given that I'm anticipating an EP800 on or about 11/17, I could be looking at trouble if I fail to upgrade the power lines, why does it never end (ah, what would I find to do if the project ever ended? ).

Perhaps the M80s are thirsty and the home wiring can't keep up!? \:\)
_________________________
"If you try to turn toward it, you go against it."

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#226776 - 10/25/08 05:36 AM Re: XPA 2 Now! A Keeper? [Re: jakewash]
SatKartr Offline
aficionado

Registered: 09/19/08
Posts: 608
Loc: Dallas
Good one! \:D I wished I lived in Canada, I loved those days when I still lived in the Northeast and cherished nature over what has always seemed to me an insane form of urban accomplishment (you move to the city for the wife, no?). Now the "sweet spot" to me signifies going totally over the top to future proof and avoid buyer's remorse without leaving me destitute. Bring me back to that lake (Dunmore?) in Vermont any day . . .

I guess when you compare $800 to $3850 the emotiva still is a good deal, if I had the cash I would have pulled the trigger on the A1400 and put myself out of this misery long ago . . .

If I were a rich man . . .
_________________________
"If you try to turn toward it, you go against it."

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#226779 - 10/25/08 08:12 AM Re: XPA 2 Now! A Keeper? [Re: SatKartr]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7047
Loc: Canada
Reading these recent posts on amp/power issues, I guess I should be happy my HT is in a small room and don't need the extra power.
_________________________
Fred

-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!

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#226787 - 10/25/08 09:28 AM Re: XPA 2 Now! A Keeper? [Re: SatKartr]
MarkSJohnson Online   happy
shareholder in the making

Registered: 09/27/04
Posts: 10898
Loc: Central NH
Maybe it can be returned for a few Outlaw Monoblocks or their 5 channel amp. I never hear of problems with them....
_________________________
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::

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#226788 - 10/25/08 09:39 AM Re: XPA 2 Now! A Keeper? [Re: jakewash]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6720
Loc: The Peoples Republic of Il.

The M80s are a fairly easy 4 ohm load. Any amp that couldn't handle the M80s wouldn't be on my list for sure.


_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#226792 - 10/25/08 09:54 AM Re: XPA 2 Now! A Keeper? [Re: Wid]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7047
Loc: Canada
Hey Rick. Where is that graph from. I want it as a reference the next time some joker posts on audioholics that the M80 is a 2ohm speaker.
_________________________
Fred

-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!

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#226793 - 10/25/08 10:09 AM Re: XPA 2 Now! A Keeper? [Re: fredk]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6720
Loc: The Peoples Republic of Il.

Ya know what Fred, Ive had that graph for so long I don't remember where I got it. Just copy it from my post and save it.

Come to think of it I believe Ian did a post here some time ago with a slew of different graphs, that's where it come from.................I think.
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#226794 - 10/25/08 10:19 AM Re: XPA 2 Now! A Keeper? [Re: Wid]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7047
Loc: Canada
Sigh, I thought I would try the lazy man's way first. I guess if I park it in my online photo collection it will be hard to loose.
_________________________
Fred

-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!

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#226795 - 10/25/08 10:20 AM Re: XPA 2 Now! A Keeper? [Re: fredk]
alan Offline
connoisseur

Registered: 01/29/02
Posts: 3188
Loc: Toronto/New York/Dwight
Hi Fred,

That graph is from the National Research Council lab in Ottawa, where Soundstage.com does many of its speaker measurements. If you go to Soundstage.com and then access their measurements, you can scroll down to the impedance vs. frequency charts for lots of speakers they've tested, including the M80s.

Yes, the Emotiva amps do have issues with low impedance high-current loads, as do some other manufacturers. Often a two-channel amp will do much better than a multi-channel amp, largely because the multichannel versions can't handle the heat issues. One Axiom owner had five M80s and went through a number of multichannel amplifiers, all of which would shut down driving the five M80s to extremely loud levels (those were Outlaw and Parasound multichannel amps). He settled on a two-channel amp for the mains and a separate three-channel amp, if memory serves.

Regards,
Alan
_________________________
Alan Lofft,
Axiom Resident Expert

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#226798 - 10/25/08 10:28 AM Re: XPA 2 Now! A Keeper? [Re: alan]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6720
Loc: The Peoples Republic of Il.
My memory sucks \:\) Alan is right...................I think \:D
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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