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#275371 - 10/17/09 03:43 PM amplifier?
aspicer1 Offline
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Registered: 06/02/07
Posts: 104
Loc: Virginia
I have a Denon 3806. Considering adding a 200W amplifier to optimize the power of my Axiom speakers. Most people assure me that this will give me the best clarity possible. Wondering if I should just spend the money for a more powerful receiver instead? The cheapest 7 channel 200W amplifier I have found is an Adcom at $3000. I dont know anything about Adcom and have little experience with Amps...

Thoughts?

Aaron
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#275373 - 10/17/09 03:49 PM Re: amplifier? [Re: aspicer1]
jakewash Offline
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Registered: 12/26/03
Posts: 10415
Loc: Calgary, Alberta
I would simply get a better amp and for $3000 you could almost buy Axiom's 8 channel A1400, it is a beast and sounds incredible. BTW which speakers are you running?
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#275376 - 10/17/09 03:54 PM Re: amplifier? [Re: jakewash]
BlueJays1 Offline
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Registered: 09/19/08
Posts: 4116
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If you are looking to spend $3000, you should seriously consider the Axiom 8 channel amp.
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#275377 - 10/17/09 03:56 PM Re: amplifier? [Re: BlueJays1]
aspicer1 Offline
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Registered: 06/02/07
Posts: 104
Loc: Virginia
running 2 w22 1 w250 4qs8 1ep350
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#275378 - 10/17/09 03:57 PM Re: amplifier? [Re: aspicer1]
aspicer1 Offline
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Registered: 06/02/07
Posts: 104
Loc: Virginia
I really dont want to spend as much as $3000 that is just what i have found amps with the 200w capability for 7 channels. If you know of a product that will do for less that would be great.
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#275380 - 10/17/09 04:02 PM Re: amplifier? [Re: aspicer1]
ClubNeon Offline
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Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
The Outlaw 7700 is 200W by 7, $2150.

Actually if you don't want/need the balanced inputs the 7200 is even less.


Edited by ClubNeon (10/17/09 04:04 PM)
Edit Reason: Added the 7200.
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#275382 - 10/17/09 04:11 PM Re: amplifier? [Re: ClubNeon]
aspicer1 Offline
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Registered: 06/02/07
Posts: 104
Loc: Virginia
Now your talkin. Thats a lot of savings. I have no experience with Amps... I assume the balanced inputs you metion are something i can adjust from the reciever?
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#275383 - 10/17/09 04:26 PM Re: amplifier? [Re: aspicer1]
ClubNeon Offline
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Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
Normally an amplifier is fed a signal which moves from positive to negative in reference to the ground following the waveform which it is to reproduce. The ground is shared with the shield. This is called single-ended.

Some receivers (mostly pre-amp/processors, which do not have inbuilt amps) have balanced or differential outputs. A differential signal has two parts one which matches the above, the other one is the same signal but inverted. There's also a ground wire separate from the shield. The wires are wound or braided closely together. The amplifier is driven by the difference between the normal and inverted signals. The idea being that any outside electrical influence will act equally on both wires. So the difference between them doesn't change just their offsets.

Most consumer oriented gear will not have balanced outputs. Additionally the advantage of using differential signaling over short distances (like if your receiver and amp are next to each other) is minuscule. Long runs which may end up near power feeds is where the benefit starts to show.

If you don't think you're ever going to get a stand alone pre-amp/processor instead of a receiver, and you don't plan to locate your amp across the room. A single-ended amp is perfectly suited. But since amps are an investment which you'll probably keep over many receiver or pre-amp upgrades, you may wish to lay out the little extra for one with balanced inputs for future proofing.

Your call.
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Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
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#275384 - 10/17/09 04:34 PM Re: amplifier? [Re: ClubNeon]
aspicer1 Offline
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Registered: 06/02/07
Posts: 104
Loc: Virginia
Wow! I really need to read up on this stuff. I am pretty lost. best I can get out of that is I know my amp and receiver will be in the same location so that leads me toward a single ended amp. Other than giving me more set up options in the future will i notice a real sound difference with the balanced inputs?
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#275387 - 10/17/09 04:55 PM Re: amplifier? [Re: aspicer1]
ClubNeon Offline
connoisseur

Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
Unless you believe you have a golden ear, then no, you shouldn't notice a difference.

This was recently covered by Alan in his "Audiolofft":
http://www.axiomaudio.com/boards/ubbthreads.php?ubb=showflat&Number=261042

Even if you do end up with something with only balanced outputs, it is possible to turn a balanced out into a single-ended in with a simple cable. But the other way around is much more difficult.
_________________________
Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris

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