Re: Does all power amp sounded the same?
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Joined: Jan 2011
Posts: 1,291
connoisseur
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connoisseur
Joined: Jan 2011
Posts: 1,291 |
a good quality amplifier does only one thing: make the signal stronger. that's all.
as regards comparative tests, the first thing to make sure of is that the amps MUST be adjusted to put out the same exact voltage with a given sine wave signal. a voltmeter must be used for that.
the brain is very finicky for SPL, but it has a very short memory.
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Re: Does all power amp sounded the same?
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Joined: Jun 2003
Posts: 8,488 Likes: 1
axiomite
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axiomite
Joined: Jun 2003
Posts: 8,488 Likes: 1 |
bibere usque ad hilaritatem
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Re: Does all power amp sounded the same?
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Joined: Feb 2004
Posts: 1,863
connoisseur
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connoisseur
Joined: Feb 2004
Posts: 1,863 |
a good quality amplifier does only one thing: make the signal stronger. that's all.
The design of the amp has a lot to do with how it accomplishes the stronger signal, and what portion of the signal. A class A amp, amplifies the entire sign wave, and is also the least efficient design.. a class AB amp only amplifies a portion of the sign wave which makes it more efficient than a class A amp, it is also less expensive to manufacture a class AB amp with the same power rating as a comparable class A amp. The Emotiva amp is a AB amp, the Odessey is a A/AB amp, and i could not find out the design of the Anthem, but i would guess is is a AB or some combination design... if the Odessey was operating in class A then that would possibly explain why it sounded the best and had the most dynamics. The Odessey most likely operates in the class A region for the first given % of the power, as you draw more power from it, it then switches to an AB operation, if you guys did not turn the volume up insanely loud the Odessey was probably operating in the class A region during your "testing" which was amplifying the entire sign wave, not a portion of it like the Emotiva is doing and possibly the Anthem as well... If you played all of the amps a higher volume, when all amps would be operating as an AB amplifier then i would guess there would be no discernable difference between them at that point.
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Re: Does all power amp sounded the same?
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Joined: Jul 2009
Posts: 288
local
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OP
local
Joined: Jul 2009
Posts: 288 |
when we change the amp, we re-run the Audessey of the Onkyo NR808 (as a pre amp) and all channel are calibrated to 75db using a radioshack SPL meter.
The volume dial on the Onkyo is at -10db all the time.
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Re: Does all power amp sounded the same?
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Joined: Jan 2004
Posts: 13,844 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,844 Likes: 13 |
the problem is the huge delay in between setting each amp up, you need special equipment that you can switch in an instant from one amp to another, for a true blind a/b test.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Does all power amp sounded the same?
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Joined: Dec 2007
Posts: 7,786
axiomite
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axiomite
Joined: Dec 2007
Posts: 7,786 |
Yeah, but nothing fries up bacon wraped deer links better than a class A amp. That there is a fact. As for the topic, pick your side, buy your amp/receiver accordingly, be happy.
Fred
------- Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
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Re: Does all power amp sounded the same?
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
Joined: May 2003
Posts: 18,044 |
I am the Doctor, and THIS... is my SPOON!
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Re: Does all power amp sounded the same?
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
Joined: Dec 2003
Posts: 10,420 |
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: Does all power amp sounded the same?
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
Joined: May 2003
Posts: 18,044 |
AVR. I have all the deer I can handle, I'm told.
I am the Doctor, and THIS... is my SPOON!
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Re: Does all power amp sounded the same?
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Joined: Jul 2010
Posts: 110
veteran
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veteran
Joined: Jul 2010
Posts: 110 |
Yeah, but nothing fries up bacon wraped deer links better than a class A amp. That there is a fact. But do all amps taste the same?
M80s, VP180, QS8s, EP800 v3
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