Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Oct 2003
Posts: 1,349
connoisseur
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connoisseur
Joined: Oct 2003
Posts: 1,349 |
Awesome that the bi-amping helped a bit. Are you running the M80's full range?
M80v2 | VP150v2 | QS8v2 SVS Pci+ 20-39 Emotiva UMC-1 & LPA-1 M22ti + T-Amp, in the Office
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
Earlier in the thread you said. Quote:
Even when I walked up to about 3 ft of either m80, was not even hitting 110dB's, at least what I could see visually with the SPL meter.
This is from today and the bi amping trial. So what exacty changed?
Quote:
When the woofer section shut down, I was not going over 110dB from 3ft in front of the speaker.
Last edited by wid; 04/15/07 02:59 AM.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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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
Joined: May 2002
Posts: 10,654 |
Well John, the reason that the amp driving the mids/highs didn't shut down is likely the result of two factors: the impedance of the M80s in those frequencies varies from about 4-15 ohms, with an average of about 8-9, so that made things easier; in addition, it's likely that the highest power demand on that particular material occurred in the bass range, so that amp had to handle very little of it.
As to the bass section amp, no, there isn't any difference in the impedance it faced(and current required)before and after; from the published graph it's very close to the nominal 4 ohms, and nothing's been changed, since the bass drivers are of course the same and the crossover circuitry hasn't been changed either.
As to the observed higher setting before shutdown in the bass, there shouldn't be any significant difference if the conditions were identical, since no additional power capacity has been added. The temperature and/or current limiting circuit should shut it off at about the same setting. Possibly there had been longer operation and the temperature was higher when it had shut down at +4 on the previous occasion.
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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
Posts: 13,840 Likes: 13
shareholder in the making
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OP
shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
Thanks Peter, now that you ask that question. In previous tests I had the 80's set to small, with a crossover of 80hz. So the MPS1 amps weren't even getting the entire low freq's. Today, I actually set the 80's to large, with No Sub turned on. The bass was very nice and tight and full of punch, that is until it shut down.
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: Jan 2003
Posts: 315
devotee
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devotee
Joined: Jan 2003
Posts: 315 |
This would solve your problem. They used to make a 2ch version that was like 600x2 at 8 ohms.
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Aug 2004
Posts: 6,379 Likes: 7
axiomite
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axiomite
Joined: Aug 2004
Posts: 6,379 Likes: 7 |
>>In previous tests I had the 80's set to small, with a crossover of 80hz. So the MPS1 amps weren't even getting the entire low freq's. Today, I actually set the 80's to large, with No Sub turned on. Auggh !! What happens if you run with the mains set to Small ? Would that be more of an apples-to-apples comparison ? There's no smiley for this, but imagine me asking the next question through clenched teeth. IS THERE ANY CHANCE THAT THE BETTER SOUND AND TIGHTER BASS MIGHT HAVE SOMETHING TO DO WITH THE DIFFERENT CROSSOVER SETUP AND NOT THE BI-AMPING ?
Last edited by bridgman; 04/15/07 04:44 AM.
M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39 M5HP, M40ti, Sierra-1 LFR1100 active, ADA1500-4 and -8
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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OP
shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
This will do the trick. huh Rick
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: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
I bet it would
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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Re: Emotiva MPS-1 shutting down? Amp gurus help
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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OP
shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
I wonder if their warranties are transferable, this one is on Audiogon?
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: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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