XPA-1s for use with B&W 804s? - AVS Forum
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post #1 of 19 Old 03-11-2013, 05:10 PM - Thread Starter
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I'm currently running an OPPO 105 directly into a Primare A30.5 via the multichannel outs. I'm looking to improve my amp stage from the Primare, and I was thinking of snagging three Emotiva XPA-1s to use for the L, C, and R channels, then using some stereo amp for the rears. Any thoughts? I've never used Emotiva, so I don't have much sense as to the quality. I'm listen 80% to movies, 20% to music--mostly jazz. Any thoughts or other suggestions appreciate. Thanks!

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post #2 of 19 Old 03-11-2013, 05:27 PM
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A friend of mine uses XPA-1's to power his 803Ds and center (the big B&W 800-series center, not sure the model #). Sounds good to me...

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post #3 of 19 Old 03-11-2013, 06:50 PM
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Do you really need 500W RMS per channel for the 804S? Surely overkill with max. power rating 200W. My N803s are only driven by a meagre 175WPC.

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post #4 of 19 Old 03-11-2013, 06:55 PM
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Have you got a 20 amp circuit to plug those monsters into?

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post #5 of 19 Old 03-16-2013, 05:32 PM - Thread Starter
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Originally Posted by crussader View Post

Have you got a 20 amp circuit to plug those monsters into?

Hmm. Not sure. I'm moving into a new home next month, and I'm starting to think about gear for the movie room. My guess, offhand, would be no.

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post #6 of 19 Old 03-16-2013, 05:36 PM - Thread Starter
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Originally Posted by Kilian.ca View Post

Do you really need 500W RMS per channel for the 804S? Surely overkill with max. power rating 200W. My N803s are only driven by a meagre 175WPC.

That's a good point. My Primare is 120wpc, and going up to 500 probably isn't necessary. Maybe three XPA-100s instead? Essentially, I'm trying to get an upgrade from my Primare A30.5, both in terms of power and sound quality, at a reasonable price. If you've got any ideas beyond Emotiva, I'd be grateful.

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post #7 of 19 Old 03-16-2013, 05:46 PM
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Outlaw 7500 is a killer deal and a very good amp.

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post #8 of 19 Old 03-16-2013, 06:30 PM
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If you are going to spend $1350 for three XPA-100s I would suggest the XPR-5 for $2k. That way you have a killer five channel one box amp with 400 wpc @ 8ohms. I personally would never have a need for anything over 200 wpc but some like the additional power.

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post #9 of 19 Old 03-16-2013, 06:57 PM
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Originally Posted by win200 View Post

Hmm. Not sure. I'm moving into a new home next month, and I'm starting to think about gear for the movie room. My guess, offhand, would be no.

A lot of new construction is wired with 12/2 Romex. Older construction post 1996 to 2008 will have a white sheath and post 2008 construction will use a yellow sheath. Lights are still wired using white 14/2. Receptacles will most-likely be 15 amp with a slot neutral slightly larger than the slot hot. A 20 amp receptacle will have a T-shaped neutral tilted at a 90° angle. It your wire is 12/2, you can change your 15 amp receptacles to 20 amp provided you also have 20 amp breakers installed. IF your house is to code and you had competent builders, a 20 amp breaker SHOULD also indicate 12/2 wiring even though the receptacles might only be 15 amp. They do this mainly for cost-savings.

You'll first need to determine if you have more than one circuit in the room. Again. If the electricians that built your house are worth their salt, they would have wired a living room with two circuits AND staggered the receptacles so that no two adjacent receptacles would be on the same circuit. My house was built by Mexicans, so the wiring was crap. I basically rewired my entire A/V room and dropped in an extra 100 amps ( 5 x 20 amps ) for good measure.

It is easy to calculate maximum load. It is -- Volts x Amps = Watts. Most of your gear will either list Volts and Amps or Wattage ( Volt/Amps.) Emotiva lists wattage on the back of their amps, so the XPR-5 is 1700 watts maximum, which would be 1700 watts / 115 volts = roughly 15 amps. This should be on its OWN 15 amp circuit and should not be over 12 amps continuous. Sunfire 7201 is 1440 watts, which is roughly 12 amps. I'd put the XPR-2 on its own 20 amp with maybe some other smaller stuff in the room and put the Sunfire on another 20 amp with the rest of your gear. Any subwoofers should also have their own circuit.

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post #10 of 19 Old 03-16-2013, 07:04 PM
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Quote:
Originally Posted by Bill Mac View Post

If you are going to spend $1350 for three XPA-100s I would suggest the XPR-5 for $2k. That way you have a killer five channel one box amp with 400 wpc @ 8ohms. I personally would never have a need for anything over 200 wpc but some like the additional power.

Bill

Refurbished XPR-5's were $1300 at EmoFest. The regular sale price was $1600 at EmoFest.

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post #11 of 19 Old 03-16-2013, 08:10 PM - Thread Starter
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Refurbished XPR-5's were $1300 at EmoFest. The regular sale price was $1600 at EmoFest.

Great, thanks for the tips! Any idea how the Emotiva / Outlaw gear would stack up against the SQ of stuff like Rotel / Primare / etc.? I just don't have much familiarity with the internet direct stuff. Price points are great, obviously, but I'm just hoping it stacks up sound-wise. Thanks!

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post #12 of 19 Old 03-17-2013, 01:47 PM
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They stack up very well. I am listening to an Outlaw 7500. It is a fantastic, quiet, fully balanced amp.
I am going to order its big brother the 7900.

I found a different sound in the Sunfire 7400 and I prefer the Outlaw.
The outlaw maintains the distinct sound better a high volume levels.
After hearing this, I decided to stay with classic A/B since I think they are very linear.

I listened to some Outlaw M2200 200 WPC mono-blocks that sounded great.
They are A/B/G which rail change at about 70 watts. I have to say I was very impressed.

I am not sure you need that much amp, but I doubt any rarified amp is going to outperform those XPA-1 mono blocks.

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post #13 of 19 Old 03-17-2013, 02:31 PM
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I have the B&W Nautilus 804s, but use them as surrounds. Personally, I'm a bit apprehensive about the Emo amps, made in China and all. I'm not too enamored with their looks, so that's probably a good chunk of my bias.

I think the OP would be best served by either the Outlaw 7900, or ATI AT3007. I own the AT3007, and find the sound to be quite remarkable. And, it gives you more flexibility in for the future. And it takes up less space than 3 monoblocks. I used the AT3007 temporarily to power my B&W 802s, and was very impressed. It will no doubt be plenty of amp for an 804. Plus, Made in the USA biggrin.gif
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post #14 of 19 Old 03-17-2013, 05:27 PM - Thread Starter
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Thanks for all the great recommendations! I'll definitely give the Outlaw 77/7900 a look, as well as the ATI AT3007. I've also been glancing at the Parasound A31 for use with the mains and center (I've got a Rotel stereo amp mothballed that I could use for the rears). Any thoughts on the Parasound? Price point is right where I want it at $3k, and I've only heard raves about Parasounds amps.

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post #15 of 19 Old 03-17-2013, 07:22 PM
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A31 is another great amp. A31 up front and an ATI AT2004 would make a great 7 channel setup.

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post #16 of 19 Old 03-17-2013, 08:27 PM
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Quote:
Originally Posted by win200 View Post

Thanks for all the great recommendations! I'll definitely give the Outlaw 77/7900 a look, as well as the ATI AT3007. I've also been glancing at the Parasound A31 for use with the mains and center (I've got a Rotel stereo amp mothballed that I could use for the rears). Any thoughts on the Parasound? Price point is right where I want it at $3k, and I've only heard raves about Parasounds amps.

I'm sure the A31 is a great amp but why not go with a one box solution such as the Outlaw or the ATI? I think one would be hard pressed to tell the differences between all of these amps. I honestly think the Outlaw and the ATI are the better choices. But I wonder if 300 watts is really needed. The A31 is $3k and an Outlaw 7500 is a little over half that at $1600. The two amps are close in power with A31 rated at 250 wpc and the 7500 at 200 wpc. But with the 7500 you get two additional channels at a much lower cost.

Bill

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post #17 of 19 Old 03-17-2013, 08:42 PM - Thread Starter
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Originally Posted by Bill Mac View Post

I'm sure the A31 is a great amp but why not go with a one box solution such as the Outlaw or the ATI? I think one would be hard pressed to tell the differences between all of these amps. I honestly think the Outlaw and the ATI are the better choices. But I wonder if 300 watts is really needed. The A31 is $3k and an Outlaw 7500 is a little over half that at $1600. The two amps are close in power with A31 rated at 250 wpc and the 7500 at 200 wpc. But with the 7500 you get two additional channels at a much lower cost.

Bill

Good point. I was just assuming that there was an estimable difference in SQ, given Parasound's reputation. And I don't care about the extra 50wpc. If they really are negligibly different, I'd rather save the money and invest it elsewhere... like in Fathom.

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post #18 of 19 Old 03-17-2013, 09:02 PM
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Originally Posted by win200 View Post

Good point. I was just assuming that there was an estimable difference in SQ, given Parasound's reputation. And I don't care about the extra 50wpc. If they really are negligibly different, I'd rather save the money and invest it elsewhere... like in Fathom.

Parasound definitely has an excellent reputation. I had their A52 amp and 2100 preamp. Both were excellent components that comes with outstanding customer service from Parasound. It is only my opinion that the amps mentioned will sound very similar. Others might have a different opinion. I think saving a few bucks to put towards a sub would be the way to go smile.gif.

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post #19 of 19 Old 03-17-2013, 09:20 PM
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I have B&W 804S and power them along with a HTM3S (center channel) and 685 bookshelfs (rear channels) with a Emotiva XPA-5. If doing multichannel, why not get a five channel amp? I've never once thought that the XPA-5 was lacking power with the 804S and to be honest, when crossing over to a sub it might be more steered towards overkill than not enough. I did used to drive a Yamaha 663 into protection mode with B&W 683's when running full range on heavy bass music at loud volume, that's what first sparked me to get the Emo amp, but otherwise I doubt I really needed it when crossing over to a sub. Nothing wrong with using XPA-1's for the 804, but IMO it's kinda like running high octane in a vehicle that's tuned for regular and thinking it's going to help when in fact there will be no difference in performance.
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