Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Apr 2005
Posts: 2,339
connoisseur
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connoisseur
Joined: Apr 2005
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Quote:
How large are the toroids in the Outlaws spread across 5 or 7 channels? I know each amp on the mps-1 has its own 350VA Toroid or 2.45KVA total for 7 amps.
I'll have to find the size (I bet Gonk knows), but the 7500 and 7700 have the same 2 toroids. Must be big for the 7500 to weigh 80 lbs.
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Jan 2007
Posts: 10,493 Likes: 116
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I think that's pretty similar to the MPS-1. The MPS-1 toroid looks like 600-700 VA and drives a single channel. The Rotel drives two channels.
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Jan 2007
Posts: 10,493 Likes: 116
shareholder in the making
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shareholder in the making
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Posts: 10,493 Likes: 116 |
Quote:
I know each amp on the mps-1 has its own 350VA Toroid or 2.45KVA total for 7 amps.
Are you sure it's only 350VA? It looks a lot bigger than that. If so, how is it that they are doing 780W RMS? The toroid would burn like my quiche in grade 7 cooking class.
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Apr 2005
Posts: 2,339
connoisseur
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connoisseur
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350VA is correct for the MPS.
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: May 2002
Posts: 10,654
shareholder in the making
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Randy, one of your questions involved possibly disabling the anti-clipping limiter circuit, but as Mojo also pointed out this circuit doesn't cause the amp to shut down, it just lowers the gain. The result is that at extreme levels a lower, more rounded wave top results instead of a clipped flat top. So, that circuit isn't guilty with respect to the shutting down.
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Enjoy the music, not the equipment.
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Jan 2004
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Ok, John, Mojo, and whoever wants to provide input, here goes.
I dug out my old digital multimeter. About 15 years ago I took an electronics class through the NRI schools. About all I can remember is watts = volts x amps, if I recall correctly.
So, how about I hook up the multimeter between the speaker terminals on the amp, and the 12AWG wire going to my m80's. Then watch the current (amp) readings as I slowly turn up the volume while listening to music. If I make note of the reading at the time the amps shut down, could I not figure out the watts, and see if I truely am even close to 300 watts?
I just want to be in the ballpark, so when I call Emotiva I've got a little evidence, other than the Radio Shack SPL readings.
Thanks, Randy
Last edited by sirquack; 04/04/07 02:46 AM.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: May 2002
Posts: 10,654
shareholder in the making
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Yes, do it, but you'll be reading voltage(which is the boss), not current. Then the form of Ohm's Law which is applicable would be P=Vsquared/R.
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Enjoy the music, not the equipment.
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Ok, I'm confused, isn't it current that would be traveling through the speaker wires? And, voltage is what would be in the AC line? Easy on me John.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
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Randy, the actual power is being carried by way of an electromagnetic wave traveling along the outside(not inside)of the speaker wire. Don't worry about current at this point; the standard way of measuring what you want to learn is by way of taking the voltage across the output terminals at varying levels.
-----------------------------------
Enjoy the music, not the equipment.
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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ok, I'm going to run down and give it a quick try...thanks a bunch
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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