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NHT power5 amp, Givin it some lovin - Page 9

post #241 of 584
Quote:
Originally Posted by ChicagoTC View Post

Congrats and these are famous last words. I give you 6 months until you find something else you "need" to upgrade.

Six months? Naw...a few weeks before he wants a W4S amp with 500 watts per channel.
post #242 of 584
I decided to audition this amp with my Mirage OM speakers first as I have lived with these speakers for a while and I know how they sound with each different amps I have tried in the past, as well as my current beloved Proceed amp. I also hooked up my new Revel Performa speakers but I was unable to run Audyssey setup as I keep getting speaker detection error. Onkyo will be sending me a new mic next week and if that fails, I have to send the unit back to Onkyo for repair. And God knows how long that would take before I will get it back. I bought my unit from CC with an extended warranty. I wonder if I could simply drop it off at CC and swap it for a new unit. I won’t be able to truly evaluate the Revel until I can run Audyssey setup. Right now the Revels sound too bright and lean and swapping the Proceed back for the Power5 didn’t change that at all.

Anyways back to the Power5. Based on my limited audition I must say this is one amazing amp!! In the first few minutes of listening, I knew this amp was special. Detailed, airy, smooth and clean would be the words that describe the sound of this amp. Music seems to just float on space. Big soundstage. The major difference between the Power5 and the Proceed is its ability of the Power5 to play at higher volume without any distortion. I have pushed this amp to reference level and it sounds even better. Those subtle details on soundtracks will reveal themselves easy at higher volume. I am not talking about new details being reveled, but rather being noticed with casual listening. With Power5, as you push the volume higher those details would just jump out. I can't push the Proceed very high and still get a comfortable, smooth and easy to listen to sound. The Proceed has its limit. Once I pass 70db on my remote (reference being 75db), I usually reach for my remote to turn the volume down. I usually listen at –10 db below reference on my Proceed + Onkyo combo depending on the material. If you listen within its limit, the Proceed is an excellent amp. With the Power5, I find myself listening at -5db below reference. While it’s loud, I don’t need nor want to turn it down. It’s amazing how comfortable, clean and smooth it is at that level. Listener fatigue does not exist in this amp’s vocabulary! Let me stress this again...the ability to push that volume knob higher without getting distortion equates to a fantastic sound and a very different listening experience. With movie soundtracks, it's like being there. I played the plane crash scene in " Flight of The Phoenix", and boy, my room became the plane. The last time I watched this movie I had an HSU sub but now I have the JL Audio F112, so the sub has a lot to do with it. And check out the gun battle scene in "Open Range" and you will get an idea of what I am talking about. I have never heard a gunshot that sounds so real and so spooky. You will feel like your room is the movie set. I also watched “Southern Tales” and while I didn’t care much for the movie, I watched it to the end because listening to the soundtrack was a treat. At the end of the movie I repeated chapter 25 & 27 just too hear it again. My room was filled with majestic sound, with soundstage that just goes well beyond the front wall. Remarkable!

I literally listened for hours, something I haven’t done for quite a while. For the entire afternoon, I was either listening to music or watching a movie and the amp did not even get warm. Mind you, I was listening near reference the whole time. Listening to my favorite songs was also a treat. Song after song, the sound is rich, delicate and airy, pretty much like with the Proceed. My wife who usually asks me to turn the volume down asked if I could turn it up a bit and I was at 70db oon the Onkyo already. This amp begs to be pushed higher. Lizz wright's "Hit the ground" and Sarah McLachlan’s "Answer" gave me goose bumps. I just can’t wait to run Audyssey and play with the Revels. If I can get this much performance out of the Mirage, I am wondering to what level the Revel +Power5 combo would take me. I guess time will tell.

So how does it compare to the Proceed overall? Both are excellent amps. The power5 plays cleanly at very high volumes, and it seems to have unlimited power reserve. If you listen at low to medium volume then both amp are excellent, I have no preference here. If you like to crank it up, then Power5 is the clear choice. I personally prefer the Power5 but YMMV. I have heard what it’s like to listen louder than usual without any discomfort whatsoever and for me there is no going back. From now on I will be listening near reference (reference being 75 db on the Onkyo not the actual reference which is '0" on the master volume in relative value OR 82 db in absolute value) most of the time. I have set my Onkyo's max volume @75db, so the max I listen to is about 17db below true reference beofre i got the Power5. I now listen at 7-12 db below reference.
As for looks, I like the aesthetic of the Power5. A dimmer would have been nice as I find those green channel indicator LEDs a little too bright for my HT room. My amp upgrade is done for quite a while, I think. Even if I upgrade at a later date, it would be for another class D based amp. This amp is very, very good at MSRP, at the close out price, this is a good as it gets. I am not an audiophile by any measure, but if being one means talking down one of these class D amps, then I don’t ever want to be one.

All that being said, please remember, sound is very subjective. Room interaction and system synergy, and your own ears account to what you hear and like. So you may or may not get the same experience as I did. Also remember that I only spent a limited amount of time with the Power5. For those of you on the fence, I say try it out in your own setup. ListenUp has a 30-day return policy. If you don’t like return it. But I doubt you will. I would like to thank the OP for starting this thread and sharing his experience and Bill Mac for pushing me to try out this amp. I love AVS but I need to stop my frequent visits here, seriously!

Alex.

*Edit* I have edited my post to clarify what I mean by reference volume. I should have used the true reference value which is 82db in absolute terms. Sorry for the confusion.
post #243 of 584
Alex,

I am happy to see that you are enjoying the Power 5. Excellent review and mirrors many of my thoughts. Especially the part about not being an audiophile by any measure. That is me all the way for sure!

Bill
post #244 of 584
I currently have anthony gallo reference 3.1's, a marantz 8002 reciever, and a 10 year old carver tfm-35 (240watts i believe). Does everyone agree that if i use a NHT power 5 instead of my carver, there will be a noticable difference? I want to buy it, but dont want to spend the money if the carver sounds just as good....
post #245 of 584
Great read Alex.
Thanks
Allen
post #246 of 584
Quote:
Originally Posted by IcemanDallas View Post

My power2 arrived this morning. Got it connected and wow...this blows the amp section on my Pioneer Elite away! Want to listen a while and gather my thoughts before I post a review.

Are you running gallo reference 3.1's with the NHT power2?
post #247 of 584
Thread Starter 
Quote:


All that being said, please remember, sound is very subjective. Room interaction and system synergy, and your own ears account to what you hear and like. So you may or may not get the same experience as I did. Also remember that I only spent a limited amount of time with the Power5. For those of you on the fence, I say try it out in your own setup. ListenUp has a 30-day return policy. If you don’t like return it. But I doubt you will. I would like to thank the OP for starting this thread and sharing his experience and Bill Mac for pushing me to try out this amp. I love AVS but I need to stop my frequent visits here, seriously!

Thanks for your review Alex, and its very imformative when the reviewer has an excellant piece of equipment to compare it to. This thread is starting to get very imformative. Its not often that a product is being reviewed by so many folks who have nice amps to start with and that is very telling imo.
Hopefully we will get 3 or 4 more reviews real soon as more folks get their amps this week.
Oh, and I Know what you mean about visiting AVS, it can get very costly


Quote:


With the Power5, I find myself listening at -5db below reference. While it’s loud, I don’t need nor want to turn it down. It’s amazing how comfortable, clean and smooth it is at that level. Listener fatigue does not exist in this amp’s vocabulary! Let me stress this again...the ability to push that volume knob higher without getting distortion equates to a fantastic sound and a very different listening experience


I think we are starting to see a trend on some of the things that make the Power5 special. Its abiltity to crank and be pushed is almost uncanny imo.
I was on vacation for a week or so and hadnt been able to watch many movies. I put on I am legend last night. Now, I havent read reviews of this disc, But I was blown away at the sound quality I was hearing. Maybe the disc is a reference audio disc I dont know. All I can say is it sounded incredible and the Power5's ability let me listen at around 5 db higher on the master volume then I could normally go...without even breaking a sweat.
Ive had a tons of class a/b amps in the past, some were really mega watted too ..as such, I wasnt really expecting to much of a difference when I ordered the Power5 , I knew it was small, lightweight and ran cool, was brand new with a warranty and had nice looks, and had plenty of wattage to run the nhts..Now if it only matched a decent class a/b amp in sound quality.
I must say it has surpassed my expectations in the sound quality department, with some traits like mentioned above that Im not sure now, could even be matched ( at all ) by a class a/b amp. Your mileage may vary.



Quote:


The last time I watched this movie I had an HSU sub but now I have the JL Audio F112, so the sub has a lot to do with it.

PS. Just as a note, I too bought a Fathom F112 about two months ago ( had a HSU VTF-HO with turbo right before the Fathom ) .. The Fathom is special imo, The sound quality of the Jl sub is first rate, and one of the best purchases I have made to date.
post #248 of 584
Quote:
Originally Posted by yngdiego View Post

Six months? Naw...a few weeks before he wants a W4S amp with 500 watts per channel.

Actually, my fixation for power has shifted to replacing my SVS PC-Plus.....I "need" dual subs.

My wife is going to hurt me.
post #249 of 584
Quote:
Originally Posted by dave98svt View Post

Are you running gallo reference 3.1's with the NHT power2?

Yes, I am using the Pioneer 84TXS as the pre/pro into the power2. I also have the Gallo SA, which I turned off for most of the evaluation. The Pioneer is rated at 140x7 and my setup is 2 channel. I was driving the Gallo's off the front 2 channels and I configured the Pioneer to bi-amp, using the pre outs from the rear channels to drive the Gallo SA. My listening is 95% music and I occasionally turn the system on to watch movies. I had the Pioneer for about six months before I purchased the Gallo's and have never used anything else to drive them.

A friend of mine that has more money than sense, has a HT setup with Maggie 3.6 fronts, a magnapan center and wall hanging rears driven by an Anthem P5. I liked the powerful sound the Anthem produced and was considering trying a P2 to drive my system. I was hesitant beacuse he had to install two dedicated 20 amp circuits to power that beast. I'm in an apartment right now and would have had to run an extension cord into my guest bedroom to get the amp on a different circuit. Too much trouble so I began to look for alternatives and found this thread. For $700 I could take a chance on the power2 and unload it if I wasn't happy.

My input is an SB3 using a wireless connection and wav files. The first cuts I auditioned were from Eryca Badu's Baduism. This cd was brought to my attention in the "Speakerquest" thread so I had downloaded a copy from Musicgiants to see how the Gallos' performed. I was very pleased with the performance using the Pio/SA combination, but when using the Pio alone, the lowest notes of the upright bass were audible but somewhat muddled and unfocused, as well as being affected by the natural rolloff of the speakers. When playing these cuts using the power2 the difference was immediately noticable. The very low bass on Rimshots became tight and more authoratative. Kick drums had more weight and definition. Badu's unique voice was crystal clear and precisely placed in the soundstage. Something else was different but I couldn't quite put my finger on it.

My taste in music is typically smooth jazz, acoustic rock, eclectic and some classic rock. I moved on to the Eric Clapton Unplugged CD
and that something else became clearer. As mentioned in the review by Alex, on some music the power2 seemed lean, almost sterile. It disappointed me so, that I powered everything down and recabled directly to the Pioneer. When I replayed the cuts using the Pioneer amp, the leaness didn't go away. I finally figured out that to compensate for the bass difficencies in the Pioneer, I had over compensated with the Sub Amp. So I reconnected to the power2 and as I listened again over the next few days I began to appreciate the clarity and detail presented by the power2. It wasn't sterility that I was hearing, it was the improved presentation of the nuances in the selections, of which the Pioneer alone was not capable of reproducing. One of my favorite cuts on this CD is Old Love. The Gallo's always imaged well but I now have a wall of sound. Soundstage depth is also enhanced by the increased detail the power2 provides. Each instrument is precisly located. I always loved that you could hear Clapton keeping time with his foot. I can now tell you that he is wearing Florsheim penny loafers. The piano solo presented the attack and note decay that I was not hearing on the Pioneer. Drum and cymbal reproduction is excellent! I also listened to Mister Magic by Grover Washington Jr and the horns, both sax and trumpet, have a "razz" to them that was more pronounced on the power2. Ron Carter's bass was tight and well defined, as it was on the Badu CD, even though this recording was done thirty years earlier.

Obviously, after only four days I've only begun to explore the capabilities of this amplifier. My initial reaction is 100% positive. I've re-integrated the SA back into the equation, at a much lower level of boost than with the Pioneer. I still have not watched any movies but I would think that the experience would also be enhanced. Some casual observations... well built, attractive in appearance. A bit larger than I expected. Runs cool and I have not experienced any of the hum that some power5 owners mentioned. I haven't pushed the amp anywhere near reference levels but I can tell the power is there. I'll continue to update this thread with any observations.

Ice
post #250 of 584
Thread Starter 
Quote:


I currently have anthony gallo reference 3.1's, a marantz 8002 reciever, and a 10 year old carver tfm-35 (240watts i believe). Does everyone agree that if i use a NHT power 5 instead of my carver, there will be a noticable difference? I want to buy it, but dont want to spend the money if the carver sounds just as good....

Havent heard the Gallo's but I owned a couple of those Carver TFM amps in the past ( tfm-25 and 4.0T ). Nice amps especially if you wanted to "warm up" the treble and mids a bit. In the end I decided that it seemed like it was rolling off the high end a little too much for my tastes. One other thing I noticed was the bass was a bit fat or loose with the two Carvers I had. I am of the opinion that you will hear a difference between the Power5 and the Carver, but its anybodies guess if you will actually like it better, You've been using the Carver for a long time. Technically theres not much doubt imo that the power5 is a better amp ( more neutral, better bass, etc.)
post #251 of 584
Thread Starter 
Another excellant detailed review ..Thanks IcemanDallas.
post #252 of 584
Alex,

As another proceed amp owner, you are saying the largest difference between your new NHT amp verusus the proceed is mainly audible at near reference levels? I am still contemplating the NHT but I rarely if ever listen to anything that loud. Did you notice any other differences between the two at normal levels?

Thanks....great review!
Brandon
post #253 of 584
Great review. Very informative. Thanks, Iceman.
post #254 of 584
Quote:
Originally Posted by psujohny View Post

Havent heard the Gallo's but I owned a couple of those Carver TFM amps in the past ( tfm-25 and 4.0T ). Nice amps especially if you wanted to "warm up" the treble and mids a bit. In the end I decided that it seemed like it was rolling off the high end a little too much for my tastes. One other thing I noticed was the bass was a bit fat or loose with the two Carvers I had. I am of the opinion that you will hear a difference between the Power5 and the Carver, but its anybodies guess if you will actually like it better, You've been using the Carver for a long time. Technically theres not much doubt imo that the power5 is a better amp ( more neutral, better bass, etc.)

Thanks for the advice..........i ordered a power5 from listenup.com. I hope it is works for me. I can't imagine it not being better than my old carver...
post #255 of 584
I am surprised that ListenUp has any more Power 5/2s left. I would think the supply has to be running low. With so many positive reviews from people (as psujohny points out) that have had very good amps to start with makes me think they will go even faster. If I had the extra cash I would pickup a Power 2....... ohhhh maybe I should. Just checked and OneCa** is sold out of the Power 5 but ListenUp still has them on their site.

Bill
post #256 of 584
Hi:

I received my Power5 at the end of this past week, but I did not have a chance to try it until tonight. I could not get it to work, which leads me to believe the unit is defective. I hooked up the amp to my stereo rig, but there was no sound. I noticed there is bright green light that comes up inside the amp (towards the back) when the amp is first turned on, but it goes out after a few seconds. There is also a yellow light at the front of the unit but no lights to indicate the two channels that are supposed to be in use. I hooked up channel 1 and 5 as I have read in this thread that is the best thing to do when running the mains in an HT or the two speakers in a stereo set up.
I basically substituted the Power5 for my current power amp in the stereo set up so all speaker and power connections were similar to what I have been using for a while now (putting my current amp back in the look confirmed the issue was with the Power5). This would be the first time I receive a defective unit after all these years in audio and HT (I guess it was bound to happen). This apparent DOA issue has me concerned with the long-term reliability of the Power5 and I am not sure I would like to keep it even if I get a working replacement. Please help.

Thanks
post #257 of 584
Quote:
Originally Posted by ellogan View Post

Hi:

I received my Power5 at the end of this past week, but I did not have a chance to try it until tonight. I could not get it to work, which leads me to believe the unit is defective. I hooked up the amp to my stereo rig, but there was no sound. I noticed there is bright green light that comes up inside the amp (towards the back) when the amp is first turned on, but it goes out after a few seconds. There is also a yellow light at the front of the unit but no lights to indicate the two channels that are supposed to be in use. I hooked up channel 1 and 5 as I have read in this thread that is the best thing to do when running the mains in an HT or the two speakers in a stereo set up.
I basically substituted the Power5 for my current power amp in the stereo set up so all speaker and power connections were similar to what I have been using for a while now (putting my current amp back in the look confirmed the issue was with the Power5). This would be the first time I receive a defective unit after all these years in audio and HT (I guess it was bound to happen). This apparent DOA issue has me concerned with the long-term reliability of the Power5 and I am not sure I would like to keep it even if I get a working replacement. Please help.

Thanks

Single yellow LED is standby. I assume that you touched the ON button on the display? The amp has no auto-sensing circuits, all channels should come on and you should see 5 green LEDs when it is turned on.
post #258 of 584
Thanks for the reply. I did press the touch screen where the yellow standby button is. The power came indicating all channels green, then channel 5 went red even though there was nothing hooked up to it. I hooked my speakers and signal cables and there was still no sound. That is the status of the amp now: channels 1 - 4 LEDs are green but produce no sound and channel 5 LED is red with no sound either. I retried the Power5 and my current amp a couple of times and each time my current amp would work, but the Power5 would not. I am calling ListenUp tomorrow. This amp is definitely DOA.
Thanks again.
post #259 of 584
Would Bruce be the guy to ask for if I call Listenup? If I wanted to purchase another high priced item, maybe an AVR, along with the Power 5, what would be the chances of them making a deal on that other item?
post #260 of 584
Quote:
Originally Posted by ellogan View Post

Thanks for the reply. I did press the touch screen where the yellow standby button is. The power came indicating all channels green, then channel 5 went red even though there was nothing hooked up to it. I hooked my speakers and signal cables and there was still no sound. That is the status of the amp now: channels 1 - 4 LEDs are green but produce no sound and channel 5 LED is red with no sound either. I retried the Power5 and my current amp a couple of times and each time my current amp would work, but the Power5 would not. I am calling ListenUp tomorrow. This amp is definitely DOA.
Thanks again.

My first amp was DOA too and I had the same concern on the quality of the unit. My replacement arrived Friday and it works like a champ.

ListenUp takes the DOA as a return and you order a new one if you want to try again.
post #261 of 584
Great reviews, everyone!!!

Mine won't be technical, but nontheless it is my experience.

I received the amp on Thursday, but really couldn't get to it until Sunday night. A very difficult three nights of delayed gratification, I might add!

My delay was that I wanted to take my component cabinet/TV stand and cut out large sections of the back so that I could finally access the components from the back like a real audio geek. I'm sure some of you know or remember how hard it is to pull a unit forward and use the Braille method to plug in cables while staring at the manual hoping you got it right. This table modification required blisters, a jigsaw, powersander and paint (and not necessarily in that order! It doesn't look as bad as it should, by the way!!).

Finally, at 10:00 last night I got it all connected and put back to normal. (Except now I have to buy all new cables so that it will fit nicely and look spiffy!)

What can I say?? I am mesmerized by the sound coming out of my speakers. Some of you know that I am jumping from a very tidy Marantz SR7000 to separates for the first time. I was concerned that, because of my listening volumes in an townhome with adjacent neighbors, that I wouldn't be able to get the full benefit of the money spent on the Power5. Especially considering I have run-of-the-mill Klipsch fronts and some aging Cambridge Soundworks to fill out the rest. Oh, and a Sunfire amp that I only use for LFE even though I don't have true Large fronts. That may change, however, after I play with amp for a while. What I really need is to just replace my speakers .

Then I turned it on. Mmmm....I immediately noticed that two-channel music (John Hiatt, Gary Allan, Eagle's latest) and movie audio (Underworld: Evolution) is now really opened up with such clarity that it almost hurts my ears. That's my expression for that beautiful, clear sound you hear while standing atop a mountain peak with nothing but the silence, or maybe the crunching of rocks and dirt beneath your boots as you move around enjoying the view and the breeze. And that's only after two hours of playing around.

Thanks again for all the advice and reviews many of you have given to me and others here on AVS Forum!! I have learned a lot and will be keeping an eye on things as I start planning my speaker and pre/pro upgrades!

JP
post #262 of 584
Quote:
Originally Posted by 9suffix View Post

Great reviews, everyone!!!

Mine won't be technical, but nontheless it is my experience.

I received the amp on Thursday, but really couldn't get to it until Sunday night. A very difficult three nights of delayed gratification, I might add!

My delay was that I wanted to take my component cabinet/TV stand and cut out large sections of the back so that I could finally access the components from the back like a real audio geek. I'm sure some of you know or remember how hard it is to pull a unit forward and use the Braille method to plug in cables while staring at the manual hoping you got it right. This table modification required blisters, a jigsaw, powersander and paint (and not necessarily in that order! It doesn't look as bad as it should, by the way!!).

Finally, at 10:00 last night I got it all connected and put back to normal. (Except now I have to buy all new cables so that it will fit nicely and look spiffy!)

What can I say?? I am mesmerized by the sound coming out of my speakers. Some of you know that I am jumping from a very tidy Marantz SR7000 to separates for the first time. I was concerned that, because of my listening volumes in an townhome with adjacent neighbors, that I wouldn't be able to get the full benefit of the money spent on the Power5. Especially considering I have run-of-the-mill Klipsch fronts and some aging Cambridge Soundworks to fill out the rest. Oh, and a Sunfire amp that I only use for LFE even though I don't have true Large fronts. That may change, however, after I play with amp for a while. What I really need is to just replace my speakers .

Then I turned it on. Mmmm....I immediately noticed that two-channel music (John Hiatt, Gary Allan, Eagle's latest) and movie audio (Underworld: Evolution) is now really opened up with such clarity that it almost hurts my ears. That's my expression for that beautiful, clear sound you hear while standing atop a mountain peak with nothing but the silence, or maybe the crunching of rocks and dirt beneath your boots as you move around enjoying the view and the breeze. And that's only after two hours of playing around.

Thanks again for all the advice and reviews many of you have given to me and others here on AVS Forum!! I have learned a lot and will be keeping an eye on things as I start planning my speaker and pre/pro upgrades!

JP


Congrats, JP...glad to see you got it all hooked up and everything works great!
post #263 of 584
Quote:
Originally Posted by facke02 View Post

My first amp was DOA too and I had the same concern on the quality of the unit. My replacement arrived Friday and it works like a champ.

ListenUp takes the DOA as a return and you order a new one if you want to try again.

Hi:

I am returning mine. I talked to Bruce today and he will have UPS pick it up and then send a replacement. I hope my next one is functional.

Thanks for the reply.
post #264 of 584
Thread Starter 
So how many DOA units does this make, 2 or 3 as far as I can tell. These amps seem like their packed good enough for shipping purposes but maybe their easily suspectable to shipping damage.
I would think by the nature of the design that reliabilty long term shouldnt be a problem ( no heat and not to many parts other then the boards ) ..anyone with any thoughts on this ?
post #265 of 584
Quote:
Originally Posted by psujohny View Post

So how many DOA units does this make, 2 or 3 as far as I can tell. These amps seem like their packed good enough for shipping purposes but maybe their easily suspectable to shipping damage.
I would think by the nature of the design that reliabilty long term shouldnt be a problem ( no heat and not to many parts other then the boards ) ..anyone with any thoughts on this ?

I believe it was 2 that were DOA. I asked Bruce about issues with the Power 5 after seeing the first report of a DOA unit. He said he had sold a number of Power 5/2 amps and there were only a few that had issues. I am confident that I will have no issues but you never know. With a 3 year warranty if there are any issues it will be covered for longer than I will probably own it.

Bill
post #266 of 584
this thread is great!!! love all the reviews...

I was just wondering who else is running a controller and nht speakers with their power 5 or power 2. I only know of Ricky and myself. anyone else running an all Nht system?
post #267 of 584
I was thinking of pulling the trigger on the Power 5. I'll admit I haven't done enough homework on Amps but I wonder how long these units will be in stock at this price. But this post by WYRED 4 SOUND at the Wyred for Sound vs. D-Sonic thread has me wondering how the Power 5 will perform in in the long run. Or should I be spending more $$$ if I'm worried about long term performance?

http://www.avsforum.com/avs-vb/showp...5&postcount=45
post #268 of 584
Quote:
Originally Posted by steady teddy View Post

I was thinking of pulling the trigger on the Power 5. I'll admit I haven't done enough homework on Amps but I wonder how long these units will be in stock at this price. But this post by WYRED 4 SOUND at the Wyred for Sound vs. D-Sonic thread has me wondering how the Power 5 will perform in in the long run. Or should I be spending more $$$ if I'm worried about long term performance?

http://www.avsforum.com/avs-vb/showp...5&postcount=45

I feel at $1199.00 while they are still available from ListenUp to be a deal one should not pass up. I posted in reply to EJs post about the Power 5/2 not reaching rated power numbers. Home Theater does a review in their April 2007 issue that shows the Power 5 does meet its (exeeds actually) 200 watt rating into 8ohms all channels driven.

I know zip about how amps are or should be tested and EJ could be right. This would mean that Steve Guttenberg's measurements in HT are incorrect (which I doubt). I think EJs thoughts are formed without actually testing the Power 5 and I would say he would be partial to his amps as well (which is understandable).

Bill
post #269 of 584
I usually don't post things like this.

EJ doesn't know what he is talking about. He clearly has never measured either the Power2 or Power5.

The Power2 and Power5 easily exceed their output power ratings with all channels simultaneously driven. That was one of the design specifications. If the power supply is capable of enough continuous power output to power all of the amplifier channels to full power, there is no downside. In fact, it is an advantage to share power supplies between amplifier channels. Since the power demands from all of the channels are not 100% coherent (in phase and same amplitude), that allows channels with higher output demands to actually deliver much more peak power than the continuous rating.

The Power2 and Power5 both have channel to channel crosstalk of less than -100dB. Why in the world would you need it higher? It is already twice as high as it would ever need to be from a psychoacoustic standpoint.

Both of these measurements have been confirmed in a couple of reviews.
post #270 of 584
Well, EJ does need to justify the higher price for their units. I read both the D-Sonic and W4S threads, the initial argument was why W4S at the higher prices are better than the D-Sonics. When it was suggested that the NHT might be the current best deal on the block for IcePower amplification, the focus shifted on pointing out the PSU design limitations of the Power5. Marketing at its best
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