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Forums » General Discussion » Technical Questions » Emotiva MPS-1 shutting down? Amp gurus help
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#162614 - 04/14/07 10:23 PM
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![]() connoisseur ![]() Registered: 10/23/03 Posts: 1349 Loc: Jacksonville, IL |
Awesome that the bi-amping helped a bit. Are you running the M80's full range?
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M80v2 | VP150v2 | QS8v2 SVS Pci+ 20-39 Emotiva UMC-1 & LPA-1 M22ti + T-Amp, in the Office |
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#162615 - 04/14/07 10:34 PM
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![]() axiomite ![]() Registered: 06/22/03 Posts: 6789 Loc: The Peoples Republic of Il. |
Earlier in the thread you said.
Quote: This is from today and the bi amping trial. So what exacty changed? Quote: Edited by wid (04/14/07 10:59 PM)
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Rick "A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud |
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#162616 - 04/14/07 10:47 PM
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![]() shareholder in the making Registered: 05/11/02 Posts: 10621 |
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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#162617 - 04/14/07 11:22 PM
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![]() shareholder in the making ![]() Registered: 01/29/04 Posts: 13567 Loc: Iowa |
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. ![]()
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M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350 Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB |
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#162618 - 04/14/07 11:44 PM
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![]() devotee Registered: 01/09/03 Posts: 315 Loc: kansas |
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Well, Alright Then. |
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#162619 - 04/15/07 12:41 AM
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![]() axiomite ![]() Registered: 08/25/04 Posts: 6052 Loc: Bowmanville, Ontario, Canada |
>>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 ? Edited by bridgman (04/15/07 12:44 AM)
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M60ti/VP180/QS8, SVS PC-Plus 20-39, EP500 M5HP, Sierra-1, M40ti M2ti, M3v4, VP100 |
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#162620 - 04/15/07 01:02 AM
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![]() shareholder in the making ![]() Registered: 01/29/04 Posts: 13567 Loc: Iowa |
This will do the trick.
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M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350 Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB |
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#162621 - 04/15/07 06:56 AM
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![]() axiomite ![]() Registered: 06/22/03 Posts: 6789 Loc: The Peoples Republic of Il. |
I bet it would ![]()
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Rick "A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud |
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#162622 - 04/15/07 08:04 AM
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![]() shareholder in the making ![]() Registered: 01/29/04 Posts: 13567 Loc: Iowa |
I wonder if their warranties are transferable, this one is on Audiogon?
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M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350 Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB |
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#162623 - 04/15/07 08:23 AM
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![]() axiomite ![]() Registered: 06/22/03 Posts: 6789 Loc: The Peoples Republic of Il. |
No they are not.
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Rick "A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud |
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