Marantz AV7005 - Page 158

yup. i too want to know how this can occur. i told a poster in another thread today to apply "reasonable man law" when someone tells them something. applying "reasonable man law" to the subject at hand, it's very easy to be skeptical about "reported results"...


yup. which in all likelihood, is exactly the way the previous piece sounded (assuming processing turned off, etc.)...

Since you chose to not leave this alone, consider that certain designs require components that change in value as they are burned in. Engineers knowing that this will happen, will design the circuit such that when the burn in does occur, they'll be at their targeted values.

With that said, you may only find about 5% of the currect prepros shifting during the burn in phase. Just because your Pioneer or Onkyo didn't doesn't mean it won't happen to other components.

I don't personally know if the 7005 improves with burn in. The only person that posted that wasn't bashing the burn in factor seem much more legit than those who did.

Firstly, I wasn't addressing you specifically but rather the thread in general. Secondly, just as others are free to go on and on about the "improvements" and if they take 40 vs 80 hrs to achieve, both me and others are free to talk about audiophile mythology as much as we please.


Firearms and other mechanical devices like a car engine may need "break/burn in" (because they exhibit "wear and tear" including interface surface polishing, such as mechanical gears, levers, cylinders, etc.) , certain video devices (which is why my previous post specifically mentioned SS audio) may change over time (such as a plasma screen), and possibly to some degree tube equipment which may periodically need re-biasing, for example, however digital data streaming through a computer (which is largely what an AV prepro is) as well as the transistors, IC chips, power supplies, etc which amplify the voltages, do not.


You've owned twenty and only one exhibited "burn in " change or you base this number on anecdotal testimonies you've informally collected? Never mind, that was rhetorical. I don't need a response, thanks.

I am actually wondering the same thing. Although the NAD msrp is more, they have been out longer, and a used NAD is within 1K of the Marantz, which in my world means that if there is a clear step up available, I have to think long and hard about it.

Of course, two big feature differences are that the NAD doesn't have analog bypass except on the multichannel inputs, and doesn't have a consumer accessible Audyssey feature (one must get the pro kit and license or hire a professional).

Picked up my 7005 on Tuesday and have been playing with it as I've had time the last couple of nights.

One of the first things I noticed was that I definitely prefer the sound with Audyssey off, but given some of the comments I've read it looks like I should play with leaving it on for my sub.

While you guys are arguing over the burn in question, you might want to hear what Peter Tribeman posted this morning:

I called Marantz and the tech guy told me the xlr is a true balanced from the dac out. He also stated he does not know of a replacement for the 8003.

that's good for me, as mine will likely be for sale real soon...

Thanks for the quote. Where was it posted?

It was posted over at the Outlaw forum.

I've actually wondered the same thing too. I came close to considering the M15HD myself (over the AV7005) having used a T175 processor for the last three years (which I've been mostly happy with). I figured the M15HD would yield obviously improved 2ch analog and more. But I was surprised to read that the M15HD has'nt a true analog bypass as well. The modular card upgrade (MDC) system NAD has developed is a great concept, however seems to be somewhat expensive and not as smooth as swapping cards (but may require some additional factory-based tweaking as well). Don't seem to notice many owners on the M15HD thread, sort of surprised

Selling your AV7005? Why?

(I'm considering the 7005 as my first pre-pro, upgrading from a very old, but still fine-sounding entry-level NAD receiver.)

^^^

because i'm a hardware whore...

it's not because i'm dissatisfied with it... imo, the av7005 is a wonderful piece (i've posted a few times about why i think it's wonderful)... it does everything that is asked of it, and does it well... i wouldn't hesitate to recommend it to anyone...

i may yet keep it... i have a 2nd sub on the way, and i'm trying to decide between going for a xt32 piece, or keeping the av7005 and getting the as-eq1... the as-eq1 would likely satisfy my "new shiny toy" craving for a bit...

Thanks, Chris.

what about analog signals passing through transistors (which could be transistors within an IC pack or discrete) and other various discrete components? You're saying there has absolutely never been one occurence of change in sound characteristic ever (in regards to the analog audio section) for any pre-pro, AVR or (analog) stereo pre-amp or amp component?

Same diagnosis here

I went for the AS-EQ1. Far better choice than one of the XT32 units.

The performance of the AS-EQ1 with two subwoofers ist great.

Due to having been turned on for 4 minutes in previous times use vs. 400 hours?* No. [by "change in sound characteristic" I take it you mean audible to at least some expert/trained listeners, young, with excellent hearing, in scientifically controlled conditions, through top-notch gear.]

Some things, and I'd hardly think a low power preamp would especially apply but I suppose it is possible, might need to "warm up", which is different. That is they need to reach a state of thermal equilibrium before they have a stable output. [This is why, for instance, some devices have turn on relays which delay the output, so you don't hear the problematic distortion, thumps, pops, etc. while still cold] But don't confuse "warm up", which sometimes does apply in some instances, to "break in", which suggests a trained ear could identify if a unit were only 4 minutes old vs one that's 400 hours old (of actual use). They (broken in preamps*) are indistinguishable to the human ear compared to brand new ones.

*[Same conditions as previous apply: audio not video, no moving parts, non-mechanical, solid state, not tubes, modern day design.]

it's an incurable disease... fortunately, the symptoms are easily treated...

i started a thread in the subwoofer subforum on this... c'mon over and share your experiences... i'm gonna need a lot of spoon feeding to not fubar the setup...

Humorous, I''ve been thinking the same thing as I have a dual sub setup. The ONLY knock I have on this unit is the lack of XT32, and I don't have the room to add another component like the AS-EQ1, nor would I want to if one can get 90% of its performance in the pre/AVR.

But there are no pre's out there outside of the pricey Onkyo and Integra's that have this yet and I'm not willing to give up the XLR connections.

Anyone know where to buy one cheap online? I know Onecall's "my price" of $1300 is the lowest I know if but that was months ago and it's not in-stock there.

EDIT
Looks like AVscience store has the best offer.

Now that we use custom EQ'd, computer assisted via calibrated microphone by an averaging of eight room positions, sub outs (your AV7005), the benefits of individualized EQ for two differently placed subs I suspect is over hyped.

As you know, the beauty of subs is that below 80 Hz or so (using normal music/movies at least) our brain's perception is a monophonic summation of all the bass coming at them from all sources in all directions in total, such as multiple subs. If the response at the ear (or our test microphone) isn't flat, then, yes, EQing it to be fairly flat is a good idea (although being ruler flat is also an over hyped goal since our ears are both the least sensitive to these frequencies as well as the least sensitive to small differences in this range, compared to the rest of the human's hearing range). But all that matters is the flatness of the singular summed signal from all sources/directions, so doing this monophonically with one EQ should suffice.

Put it this way: say you had two "perfect subs", A and B, but you purposely dial them in oddly as follows:

You set A to 1Hz- 40Hz, with a steep filter above that, and B to 40 Hz to 80 Hz. You then feed them the same signal from the AV7005 sub out split with a Y cord. Although individually each sub has a terrible frequency response, one with a huge hole between 40 and 80 Hz and the other having no output below 40 Hz, it doesn't matter. To a human (and the Audyssey microphone) you have one fantastic sub and the only correction needed is based on your room and room placement. The moral of the story is that although having 2 sub outs with individualized EQs may in a sense give you more fine tuning and precision in EQing the subouts, as XT32 is said to have, having individualized EQ for both I don't think is really that important. EQing the summed signal only, not stereophonically, should be just fine, providing the EQ has the precision you need.

My 2 cents.

I have this combo: AV7005 with A51 (and A23 for rears) and it sounds great.

I finally was fast enough with my trigger finger to jump on a Refurb AV7005 from Acc4Less and it came in today. Spent about 30 mins setting it up and it sounds wonderful. I have it hooked up to an Emotiva UPA-5 and PSB Imagine Towers & Center. I am waiting on PSB to release the mini's so I can use them as surrounds.

Watched Avatar and Corpse Bride from the PS3 and the soundstage is huge. I am one happy camper!!

Picked up the Sr7005 and had about 5 hours on it so far. Not using the amps on it and am surprised how warm it is. Wouldn't say its hot but its more than tepid.

I'm curious how warm/hot the av7005 gets? The SR gets the hottest right in the center it seems.

Hi...

I currently have Denon-AVR 4308 and 5.1 B&W CM8 speaker series.

I was contemplating getting Marantz 7005 and match it up with Emotiva XPA-5.

But decided to try to treat my living room first with bass traps and some panels. Trying to decide between GIK & ACS. Anyone have any experience with these companies ?

In any case, I was then gonna think about upgrading AVR. But the question I keep asking... is if I'm going hear a difference or not. I really don't blast the sound and mainly watch movies.

Is there new Marantz that is replacing 7005 ? Or should I be considering another company ?
Thanks in advance for your suggestions.

A lot of AVRs get quite warm due to all the processing power (DSP). You have a fairly powerful PC in that little box... My Pioneer SC-27 tends to be hottest over the processor section, not the amps (especially since I am not using the amps).

Done correctly, room treatment is far more likely to improve the sound than getting a new AVR or pre-pro. I suggest you do the room treatment first, and see (hear) how it goes.

I think the question to ask is 'what, if anything, is lacking in the sound I'm getting now?' If you can't name anything specific, or if whatever it is can be remedied by adjusting the room treatment, then there's no need to upgrade.

My AV7005 only gets mildly warm. Unlike the receiver, it only consumes 60 watts and that's maximum.

Even if you don't use them, the power amps in the SR7005 are juiced up and ready to go so they should have some warmth to them. Sort like a car that's idling.

Yes, I decided to do a room treatment first and then consider upgrading AVR.

When I was auditioning for B&W speakers, I went to Best Buy and left with the WOW feeling. I mean other speaker were good too but decided for B&W. When sitting in front of speakers, I felt sound was coming from the middle and sound just sounded awesome. I knew that I was in a treated room... And obviously I don't have that same experience in my living room.

I would like to get some where near that experience

I've only had the Marantz AV7005 for about a month, but am now encountering an annoying problem using the Audyssey configuration - well to be specific, a problem with retaining the configuration. Audyssey does an awesome job and it sounds great, but every so often (maybe 5 days of on/off regular use) the 7005 will turn on and the only channel working is the .1 while using the Audyssey configuration. If I switch into stereo or ProLogic2 or something, all speakers work. It seems like the Audyssey config is getting corrupted or something. The only way to fix it is to reset the sound processor as per the manual. The manual says to save the config before resetting the processor, but if I recall the saved profile after backing it up, it's still broken. I then have to go through the entire Audyssey process again to get things back to where they were, only to wait for the unit to loose them again. It's rather annoying and I'm wondering if anyone else has encountered this before? Is my unit faulty? I've upgraded to the latest firmware which is still doing it. Any suggestions greatly appreciated!