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Denon Preamp model AVP-A1HDCI Pictures & Info- - Page 35

post #1021 of 1467
Do audio amps even produce an EM field? I am having a hard time finding even the most basic information.
post #1022 of 1467
Quote:


Hi,
Are you saying that you are considering the integrated 7 channel amplifier/receiver or the processor and 10 channel power amp?
Mark

Processor and 10 channel amp. Thanks!
post #1023 of 1467
Quote:
Originally Posted by bluray_1080p View Post

Do audio amps even produce an EM field? I am having a hard time finding even the most basic information.

The transformer does.

http://en.wikipedia.org/wiki/Transformer
post #1024 of 1467
Quote:
Originally Posted by bluray_1080p View Post

Are you saying that having power amps in the same chassis as the rest of the audio hardware somehow affects sound quality?

Yes, it is possible...
post #1025 of 1467
Quote:
Originally Posted by SleeperSupra View Post

Yes, it is possible...

absolutely.
post #1026 of 1467
Quote:
Originally Posted by bluray_1080p View Post

Do audio amps even produce an EM field? I am having a hard time finding even the most basic information.

Currents flowing in wires produce magnetic fields, this is ancient EE history embedded in Maxwell's Equations. A time-varying current (i.e. music) will produce a time-varying magnetic field. The flipside of this is that a wire immersed in a time-varying magnetic field will have an induced current. So, any low-level circuitry in close enough proximity to a high-power amp section risks picking up some of the amp's signal. This is can't be prevented by simple shielding, as magnetic fields blow right through. Space and steel are the best remedies.
post #1027 of 1467
Quote:
Originally Posted by bluray_1080p View Post

Do audio amps even produce an EM field? I am having a hard time finding even the most basic information.

Any and all electronic devices will produce a magnetic field that will affect other electronic devices in the vicinity. If it did not there would be no need for shielding.
post #1028 of 1467
Quote:
Originally Posted by tbg@home.se View Post

...Any ideas/comments. The point is that I would like to have all that the AVP has to offer AND a very good hifi quality sound (in (or is it to) par with a good 2ch pre-amp...

Well I am hoping that this is the case, I really do not want a separate pre-amp for music. I believe that the balanced stereo inputs, balanced design and pure direct modes show intent for this processor to be a class stereo performer.
post #1029 of 1467
Im with you... the second it is in store here I am going to book a day for listening and comparing, no question. I am going to compare the AVP to Classe (HT) and also to a 2ch amp... I will post my experiences here.

But any of you out there have some thoughts? I believe that a couple of you have the AVP, no?
post #1030 of 1467
The main point is that the EM field that is produced by the power amp obviously does not affect the other aspects of a receiver and if it did a simple design change would solve that.
post #1031 of 1467
Quote:
Originally Posted by tbg@home.se View Post

Im with you... the second it is in store here I am going to book a day for listening and comparing, no question. I am going to compare the AVP to Classe (HT) and also to a 2ch amp... I will post my experiences here.

But any of you out there have some thoughts? I believe that a couple of you have the AVP, no?

I personally believe Denon is the leader in HT no questions about that but when it comes to music, yeah they do sound fantastic but comparing it to a 2 channel amp. Firstly I'd say a 2 ch amp will definetley be the leader in the music department, thats there main job.No video processing involved just pure clean sound.I cannot comment on Classe because it really becomes personal choice and I never heard one before.
post #1032 of 1467
Quote:
Originally Posted by tbg@home.se View Post

Im with you... the second it is in store here I am going to book a day for listening and comparing, no question. I am going to compare the AVP to Classe (HT) and also to a 2ch amp... I will post my experiences here.

But any of you out there have some thoughts? I believe that a couple of you have the AVP, no?

I am with you. I have a Krell HTS which I'm debating what to do with. Sound quality is most important to me and I will not compromise on that. Unfortunately the AVP has just started shipping (nothing has arrived in the U.S. yet) so we should start to see reviews in a week or two.

I do hope the Denon sounds as good as its engineered.
post #1033 of 1467
Quote:
Originally Posted by CFoote View Post

I am with you. I have a Krell HTS which I'm debating what to do with. Sound quality is most important to me and I will not compromise on that. Unfortunately the AVP has just started shipping (nothing has arrived in the U.S. yet) so we should start to see reviews in a week or two.

I do hope the Denon sounds as good as its engineered.

The denon will be awesome, are you looking at it mainly for music? if it's 50 50 you can't go wrong!
post #1034 of 1467
For some reason the backplate layout looks strikingly familiar to a Korean made processor i owned a while back.

Are these Korean Sherwood/Outlaw clones or made in Japan?
post #1035 of 1467
Quote:
Originally Posted by bobpaule View Post

For some reason the backplate layout looks strikingly familiar to a Korean made processor i owned a while back.

Are these Korean Sherwood/Outlaw clones or made in Japan?

Sorry, what?
post #1036 of 1467
Quote:
Originally Posted by bobpaule View Post

For some reason the backplate layout looks strikingly familiar to a Korean made processor i owned a while back.

Are these Korean Sherwood/Outlaw clones or made in Japan?

Made in Japan and designed by Denon. I'm sure the appearance is a coincidence.
post #1037 of 1467
Quote:
Originally Posted by Franin View Post

The denon will be awesome, are you looking at it mainly for music? if it's 50 50 you can't go wrong!

I am 50/50 but I have a bias towards 2 ch sound quality. We'll see what happens, we should start to have some reviews in a week or two.

Chris
post #1038 of 1467
Quote:
Originally Posted by tbg@home.se View Post

Hello all.

I have been reading a lot of the posts, great info, thanks. I am thinking about upgrading my 4306 to the big monster and have a couple of questions. First my setup. I have a 7ch Earthquake CineNova, 803D B&Ws. Today I have a dedicated (NAD S100) preamp for hifi 2-ch listening, and use my denon for everything else. I was hoping that the new, heavy, expensive AVP would fix this and replace the need for my 2ch preamp. The AVP has balanced out, just like my S100... and the components seem good, and no poweramp to mess with things.

Any ideas/comments. The point is that I would like to have all that the AVP has to offer AND a very good hifi quality sound (in (or is it to) par with a good 2ch pre-amp.

One more thing while I am writing, I've been reading on the US site, and I can not see that the AVP supports the new HD formats for sound... what is up with that?

Thanks.


I would like to opine on the separates issue since I have both. One is a large system with a Pre/Pro, good 2 channel Pass Labs X350 and a B&K 7 channel amp along with Self powered subs and furniture with transducers. I play from a NAS drive, CD, Satellite, HD-DVD, DVD and Bluray. This system is connected by dedicated filtered electricity and good cables. My second is a 5.1 Receiver with a DVD player a self powered sub and good speakers.

Both systems sound good but of course I'd rather sit in front of the separates system.

I've upgraded over the years nearly every year and with the separates it's more fun because it's only a component. I've tried quite a few amps and had wanted to try your amp but I didn't. This has been a fun hobby for me for the last probably 20 years and my first Pre/Pro was the Yamaha DSP-3000 which I really loved and in fact still own. You also have many different speakers and my two mains need more power and with separate amps you can do more to configure this. I also really like 2-channel music and with a set of big speakers and a powerful 2-channel amp you really get good sound.

On the other hand if you buy all in one it's easier to set up and one might argue that you eliminate interference by having less cabling and fewer AC connections causing ground loops.

I guess my point might be to not be concerned with the interference unless you actually buy separates because I've had more trouble with separates and interference. I also think your issue comes down to what you want to do with the system, budget and etc.

This issue can be more subjective and less scientific and that's probably a good thing because years ago at a time when I owned a McIntosh with tubes it was both scientific and subjective. Now that I'm older I really want to buy both a tube amp and a phonograph, yikes.

If I were you I would do as you mention and move to one unit that has what you need and has balanced outputs to match your amp. My pre/pro works very well with 2 channel audio. My point is that you have a nice amp and lots of power which is good. Just don't connect the amp to the same circuit as your pre/pro. With an amp of your size I might even make sure I used one step heavier in guage for the in house wiring on a dedicated circuit for the amp. You don't want excessive voltage drops in the AC line.

Just my opinion.

John
post #1039 of 1467
Quote:
Originally Posted by bluray_1080p View Post

Do audio amps even produce an EM field? I am having a hard time finding even the most basic information.

Yes they do and in part without EM they wouldn't work (most of them).

John
post #1040 of 1467
Quote:
Originally Posted by Wilfred View Post

Currents flowing in wires produce magnetic fields, this is ancient EE history embedded in Maxwell's Equations. A time-varying current (i.e. music) will produce a time-varying magnetic field. The flipside of this is that a wire immersed in a time-varying magnetic field will have an induced current. So, any low-level circuitry in close enough proximity to a high-power amp section risks picking up some of the amp's signal. This is can't be prevented by simple shielding, as magnetic fields blow right through. Space and steel are the best remedies.

You are right but if you open up some of these you'll find that they can completely shield circuits by using different technologies and one that is similar to a toslink connection. I am not saying your wrong because some interference may actually be allowed and considered acceptable/inaudible but we are talking about companies that are in the higher end of the equipment spectrum and I doubt the interference is or should be an issue.

John
post #1041 of 1467
jongig, thanks.

I am heavily leaning towards going with one unit for both HT and 2ch. The main problem is what to choose (sorry all denon lovers, but remember I am one too)... Many of my friends tell me to go with e.g. Meridian, Parasound, Arcam... they have less (e.g. no hdmi) but are said to be much better in sound, especially for 2ch.
So far denon has been a no brainer for me as the price/feature/performance ration has been much much better than anything else.... but the AVP costs about 60000SEK (in the same range as the high end stuff)...

"LISTEN" is the general advice, but good luck finding a dealer that has all amps, and confounding factors like setup will almost certainly kill any comparison. I do have one break, I can listen to classe pre-amp and the denon on the same setup in the same room... this is going to be interesting.
post #1042 of 1467
Quote:
Originally Posted by CFoote View Post

I am 50/50 but I have a bias towards 2 ch sound quality. We'll see what happens, we should start to have some reviews in a week or two.

Chris

I always wanted a Krell! Are they still in Milford? That is where our first house was!

I have a Meridian proc, and am afraid of getting any less than something like the Denon. I will wait for more reviews...soon I hope.

P.S. I have B&W, all around, as well.
post #1043 of 1467
Quote:
Originally Posted by tbg@home.se View Post

I can listen to classe pre-amp and the denon on the same setup in the same room... this is going to be interesting.

Please let us know, once you've had a good listen.
post #1044 of 1467
Quote:
Originally Posted by tbg@home.se View Post

...I can listen to classe pre-amp and the denon on the same setup in the same room... this is going to be interesting.

I'd be very interested in your findings. I too have heard Classe in a setup using the CA-M400s and B&W 800D.

I have great expectations of this processor and power-amp combination plugged into my 802Ds.

Mark
post #1045 of 1467
Quote:
Originally Posted by jongig View Post

fewer AC connections causing ground loops

I'm not technically terribly knowledgable and had thought ground loops tended to occur when mixing pro amps with consumer gear. But since this thread isn't a pro amp thread, I assume you mean that it can happen with all-consumer gear, if the components are hooked up to different AC outlets (on different circuit breakers)? Is that the case?

I have yet to build an HT and am wondering if I should arrange (if it is even technically possible) to have the whole shebang on 1 huge circuit breaker. Since I am planning on some high-powered amps (maybe 600-1200 wpc for fronts, 300wpc for sides/rears, plus 2 subs and pj) it would need to be a whole lot of amperes I think).
post #1046 of 1467
Quote:
Originally Posted by syswei View Post

...I am planning on some high-powered amps (maybe 600-1200 wpc for fronts, 300wpc for sides/rears, plus 2 subs and pj)...

Power is not just total number of watts though - in the high end realm look for amps that can double their wattage output when halving the ohms. Take a look at the Denon POA-S1 which is a good example - its a truly powerful amp, and is also my dream amplifier. It's about time they released a new version in my opinion.

250w @ 8Ω
500w @ 4Ω
1000w @ 2Ω
1400w @ 1Ω
post #1047 of 1467
Quote:
Originally Posted by MarkB View Post

Power is not just total number of watts though - in the high end realm look for amps that can double their wattage output when halving the ohms. Take a look at the Denon POA-S1 which is a good example - its a truly powerful amp, and is also my dream amplifier. It's about time they released a new version in my opinion.

250w @ 8Ω
500w @ 4Ω
1000w @ 2Ω
1400w @ 1Ω

Actually I did ask DenonJeff (on the thread for DenonJeff) if any high-powered amps were on tap for 2008 and the answer seemed to be no, that they'll see how the 10-ch amp is received and then decide what to do in the amp department.

Even the POA-S1 you mention isn't enough for me, I want at least 500w into 6 ohms for the fronts, and am considering Bryston 7B-SST or possibly pro amps - Crown MacroTech.
post #1048 of 1467
Crown I-Tech Series, Network info if you are a gadget conessouir
post #1049 of 1467
What are people hearing for ship dates in the US from their dealers? Anyone confirmed one is coming for them as yet based on a pre-order?
post #1050 of 1467
Quote:
Originally Posted by Eric Carroll View Post

What are people hearing for ship dates in the US from their dealers? Anyone confirmed one is coming for them as yet based on a pre-order?

No word yet, still patiently waiting. Last info was that it was supposed to be available by the 21st of this month. But that doesn't seem like that's going to happen. So more realistically I'm guessing by the end of next week or following week. I was so looking forward to getting mine this week, but all I can do is wait.


Seth
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