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#162384 - 03/23/07 11:42 AM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: Hutzal]
MarkSJohnson Online   happy
shareholder in the making

Registered: 09/27/04
Posts: 10938
Loc: Central NH
Quote:

Why not try to take the amp out of the rack and in some open space (if your RCA cables are long enough).



Or just put a box fan near it while playing at the same volume as the other night.
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#162385 - 03/23/07 11:51 AM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: MarkSJohnson]
Hutzal Offline
connoisseur

Registered: 07/26/06
Posts: 2102
Loc: Hollywood. (Canadian @ <3)
Quote:

Quote:

Why not try to take the amp out of the rack and in some open space (if your RCA cables are long enough).



Or just put a box fan near it while playing at the same volume as the other night.




Thats probably the more easy way of doing it
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#162386 - 03/23/07 12:27 PM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: Hutzal]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13339
Loc: Iowa
I talked to Lonnie and he said he did not think it was a cooling issue. I have plenty of breathing room above, behind, and below, so that should not be an issue. He did say I could move one mono over to the next slot to create a little more breathing room within the chassis if I want.

After talking to Lonnie, I'm pretty confident that I was just pushing the amp to its protective mode. Since it came right back on he was sure there was no problem with the amp, it was just the circuitry portecting the amp. He said he could tell me how to turn that off, but he would not recommend it.

If you keep in mind that my measurements were being taken from the seated position, about 13 ft away, and I was getting peaks up to around 106-108dB's. If I move closer to the source by half the distance, 6.5ft away, that gives you and increase of 6dB or 112-114dB, then again cutting this by half to get closer to the one meter (3ft) range, your talking 3 ft with 118-120dB's. In reality, I'm sure I was hitting higher peaks, just not watching the SPL meter closely.

Based on my 95dB 4ohm Axioms, 120dB's would be pushing the 300Watt limit of the amp, so I guess it makes sense that it would shut down.
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#162387 - 03/23/07 03:22 PM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: Wid]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6721
Loc: The Peoples Republic of Il.
Quote:

Randy, it seems you were just pushing the amps beyond what they can handle. I don't think it gets any more complicated than that.




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


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#162388 - 03/23/07 05:11 PM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: Wid]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13339
Loc: Iowa
You just stated it like they are a piece of junk. I'm sure driving a 4 ohm speaker in the equation makes a difference as well.

I will do some more testing, but if I'm getting 120dBish at 1 meter, that is pretty dang loud.


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#162389 - 03/23/07 05:43 PM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: SirQuack]
CosmicVoyager Offline
aficionado

Registered: 02/01/04
Posts: 789
Loc: Asheville, NC
Quote:


I will do some more testing, but if I'm getting 120dBish at 1 meter, that is pretty dang loud.





Yes, it is. And if you you want to continue to hear detailed music. You might want to consider reducing your db intake a little .

BTW, I checked out your site! Very nice! It's been a year or so since I've been here.


Edited by tleigh (03/23/07 05:49 PM)
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#162390 - 03/23/07 06:27 PM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: SirQuack]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6721
Loc: The Peoples Republic of Il.
Quote:

You just stated it like they are a piece of junk. I'm sure driving a 4 ohm speaker in the equation makes a difference as well.






I don't know how you read that into what I said.
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"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#162391 - 03/23/07 08:30 PM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: Wid]
snakeyes Offline
aficionado

Registered: 07/13/04
Posts: 828
Loc: Newburgh, NY
Quote:

Quote:

You just stated it like they are a piece of junk. I'm sure driving a 4 ohm speaker in the equation makes a difference as well.







I don't know how you read that into what I said.



It is easy to see that:
Randy, it seems you were just pushing the amps beyond what they can handle. I don't think it gets any more complicated than that.
EQUALS
Randy you your amps you bought are some real POSs. when you run with the M80 clan you go Rotel or you go home BIATCH!!!


JK JK JK JK
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#162392 - 03/23/07 08:53 PM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: snakeyes]
richeydog Offline
connoisseur

Registered: 05/24/04
Posts: 1201
Loc: Fresno, CA
^^^

lol...
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#162393 - 03/23/07 09:26 PM Re: Emotiva MPS-1 shutting down? Amp gurus help [Re: SirQuack]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10403
Randy, a quick point about sound levels at various distances: the 6dB per doubling of distance figure takes into account only the direct sound and would be applicable to listening in an anechoic chamber. It doesn't tell the story in real-world listening situations in reflective rooms where the level of the reflected sound has to be added to the direct sound to get the total combined level and at some point(typically maybe 5-6' feet away from the speaker)becomes greater than the direct sound. This was discussed some time ago here when Gena made some level measurements. The result is that far less power is required beyond the standard one meter rating distance than the 6dB figure would imply.
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