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#272487 - 09/15/09 03:09 PM Anyone need a new amp with some umph!!!!
Worfzara Offline
aficionado

Registered: 07/25/05
Posts: 734
Loc: London area, Ont, Canada
Check this puppy out at Steve's Music Store in Toronto

http://www.stevesmusic.com/index.php?main_page=product_info&manufacturers_id=186&products_id=1782

I know it's not a conventional HT amplifier, and it isn't pretty, but for 700 bucks you get 760 watts per channel into 4 ohms, and some pretty good circuit protection to boot. Talk about headroom. Style and noisy fans would probably limit this to an audio closet for most.

And if you get two, and bridge them, well how does 2150 WPC RMS into 4 ohms sound???

Your thoughts?

pn


Edited by Worfzara (09/15/09 03:11 PM)
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paul

Axiom M80, VP180, Qs8, EP500
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#272500 - 09/15/09 03:47 PM Re: Anyone need a new amp with some umph!!!! [Re: Worfzara]
tomtuttle Offline
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Registered: 06/20/03
Posts: 8488
Loc: Tacoma
Seems like we'd need to know THD, damping factor, slew rate, and all that engineering gobbledegook to have an informed opinion.

Still, Zimm's experience with pro-audio amps does give me pause.
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#272502 - 09/15/09 03:57 PM Re: Anyone need a new amp with some umph!!!! [Re: tomtuttle]
ClubNeon Offline
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Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
Frequency Response: 10 Hz - 25 kHz; +0, -1 dB at 1 watt
T.H.D. 2 x 4 ohms: <0.2% @ 675 W per channel from 20 Hz to 20 kHz
Slew Rate: 17V/µs
Damping Factor (8 ohms): > 400:1 @ 20 Hz - 400 Hz
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#272507 - 09/15/09 04:14 PM Re: Anyone need a new amp with some umph!!!! [Re: ClubNeon]
Worfzara Offline
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Registered: 07/25/05
Posts: 734
Loc: London area, Ont, Canada
Are those respectable spec's for this price range?

pn
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paul

Axiom M80, VP180, Qs8, EP500
Epson 3020 (Evaluating)
AudioTrak AT-6100
Denon AVR-990

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#272512 - 09/15/09 04:43 PM Re: Anyone need a new amp with some umph!!!! [Re: Worfzara]
ClubNeon Offline
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Registered: 02/06/09
Posts: 3466
Loc: Western Maryland, USA
Distortion is a little high, most solid state amps these days are less than 0.1%, many in the 0.025% range. Slew rate is a little slow, even for a single-ended amp, where good ones hang around 25 volts per microsecond.

Unless you really need that much power, smaller amps generally have better ratings. But can a person really hear the difference between 0.2 and 0.02% THD? Does your listening material have many high amplitude square waves that you need a slew rate of 50V/µs for accurate playback?

I didn't list it, but the cross-talk was surprisingly high on this amp: -60 dB. That may actually be audible in some cases.

Most pro amps are in this price range, at about $300/channel. You can probably do better if you look around. Just to give you an idea, Outlaw's excellent 7-channel amp is $2149, but only delivers 300W into 7 x 4Ω.
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Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris

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#272517 - 09/15/09 05:18 PM Re: Anyone need a new amp with some umph!!!! [Re: ClubNeon]
jakewash Offline
shareholder in the making

Registered: 12/26/03
Posts: 10415
Loc: Calgary, Alberta
Peavy, Qsc, Crown, Behringer, a number of the pro amps have been tried by a few around here with great success, as Chris noted the cross talk and THD does seem to be higher on some of the pro amps which may or may not be noticeable. Also have to watch for XLR only inputs for many pro amps as well.
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#272542 - 09/15/09 09:55 PM Re: Anyone need a new amp with some umph!!!! [Re: jakewash]
Worfzara Offline
aficionado

Registered: 07/25/05
Posts: 734
Loc: London area, Ont, Canada
Peavy is a well known name, at least to musicians, and not a fly by night company. I am just curious if they can design and manufacture a power amp this powerful for that price. And I do understand it could use some refining, whether that refinement will be audible or not is an interesting conversation. I can only imagine what the profit margins are on some of the more exotic no-pro home audio power amp companies.

I am not advocating that anyone needs 700 plus wpc in their living room. However, it is a fraction of the cost of some of the more exotic amps and has more than double and even triple the power.

pn
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paul

Axiom M80, VP180, Qs8, EP500
Epson 3020 (Evaluating)
AudioTrak AT-6100
Denon AVR-990

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#272546 - 09/15/09 10:12 PM Re: Anyone need a new amp with some umph!!!! [Re: ClubNeon]
LT61 Offline
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Registered: 02/23/04
Posts: 845
Loc: Illinois.
 Quote:
can a person really hear the difference between 0.2 and 0.02% THD?


Yes, I think so.
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#272550 - 09/15/09 10:42 PM Re: Anyone need a new amp with some umph!!!! [Re: Worfzara]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10621
Paul, it wouldn't sound any different than 215 watts(or 21.5 watts)if they weren't actually used.
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#272561 - 09/16/09 06:24 AM Re: Anyone need a new amp with some umph!!!! [Re: LT61]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6789
Loc: The Peoples Republic of Il.
 Originally Posted By: LT61
 Quote:
can a person really hear the difference between 0.2 and 0.02% THD?


Yes, I think so.


Find out here.
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"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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